This project is a Smart Thermostat design using an ESP32 module for WiFi connectivity and a BME680 sensor for environmental monitoring. The user interface includes an E-ink display and an encoder for settings adjustment. Power is managed through a USB-C connector with a 3.3V regulator. #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #thermostat #reusable #module #edge-computing #edgeComputing #espressif #sublayout

Pressure Sensor 4.35PSI ~ 18.13PSI (30kPa ~ 125kPa) Absolute 10-WFLGA The BMP581 is a high-precision digital barometric pressure sensor designed for altitude tracking, environmental monitoring, navigation, weather sensing, and industrial measurement applications. It integrates a MEMS pressure sensing element with a low-noise analog front end and digital signal processing to deliver highly accurate pressure and temperature measurements over a wide operating range. The device supports low-power operation, making it suitable for portable, battery-powered, and always-on sensing systems. The sensor communicates through standard digital interfaces and includes configurable sampling, filtering, and interrupt features for flexible system integration. Its compact package enables use in space-constrained embedded designs such as wearables, mobile devices, drones, smart home systems, IoT devices, and industrial instrumentation. Engineering Specification Device Type Digital barometric pressure and temperature sensor Manufacturer Bosch Sensortec Pressure Measurement High-resolution absolute pressure measurement with integrated temperature compensation Temperature Measurement Integrated digital temperature sensing for environmental monitoring and pressure compensation Pressure Range Wide atmospheric pressure sensing range suitable for altitude and environmental applications Interface Support I²C and SPI digital communication interfaces Supply Voltage Low-voltage operation optimized for embedded and portable systems Power Consumption Ultra-low power modes with configurable performance and sampling settings Measurement Features Oversampling support with programmable output data rate and internal filtering Accuracy High absolute and relative pressure accuracy for precise altitude estimation and environmental sensing Noise Performance Low-noise sensor architecture for stable pressure readings and improved altitude resolution Interrupt Features Configurable interrupt generation for data-ready and threshold-based events FIFO Support Integrated FIFO buffering for efficient sensor data management Operating Temperature Industrial temperature operating capability for consumer and industrial environments Package Type Compact surface-mount package optimized for small PCB footprint designs Applications Altitude tracking, indoor navigation, weather stations, drones, wearable electronics, IoT sensing, HVAC systems, industrial monitoring, and portable devices #CommonPartsLibrary #Sensor #Transducer #PressureSensor

Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount The SHT41I-AD1B-R2 is a high-accuracy digital humidity and temperature sensor from Sensirion designed for industrial and harsh-environment applications requiring reliable environmental monitoring. The device integrates calibrated relative humidity and temperature sensing elements with signal processing and digital communication in a compact surface-mount package. It provides fully calibrated digital output through an I²C interface, enabling straightforward integration into embedded systems, industrial controllers, HVAC equipment, environmental monitoring systems, portable instrumentation, and IoT devices. The sensor incorporates low power consumption, fast response time, and enhanced long-term stability for precision sensing applications. Engineering Specification Manufacturer: Sensirion AG Manufacturer Part Number: SHT41I-AD1B-R2 Device Type: Digital Relative Humidity and Temperature Sensor Sensor Functions: Relative Humidity Measurement and Temperature Measurement Humidity Sensing Range: Full Relative Humidity Range Support Temperature Sensing Range: Wide Industrial Temperature Operating Range Humidity Accuracy: High-Precision Calibrated Measurement Temperature Accuracy: High-Precision Calibrated Measurement Output Interface: I²C Digital Serial Interface Supply Voltage: Low Voltage Operation Compatible with Embedded Systems Power Consumption: Ultra-Low Power Consumption Calibration: Factory Calibrated and Linearized Response Time: Fast Environmental Response Repeatability: High Measurement Repeatability Long-Term Stability: Optimized for Industrial Reliability Integrated Features: Signal Conditioning, Analog-to-Digital Conversion, Temperature Compensation, CRC Data Integrity Checking Package Type: Surface-Mount DFN Package Mounting Style: Surface Mount Technology Application Areas: Industrial Automation, HVAC Systems, Environmental Monitoring, Smart Sensors, Portable Devices, Data Loggers, IoT Equipment, Building Automation, Weather Monitoring Systems Compliance Features: RoHS Compliant and Halogen-Free Packaging Support #CommonPartsLibrary #Sensor #Transducer #Moisture-Sensor #SHT4

Humidity, Temperature 0 ~ 100% RH I2C ±2% RH 8 s Surface Mount The SHTC3-TR-10KS is an ultra-low-power digital humidity and temperature sensor from Sensirion designed for space-constrained and battery-powered applications such as wearables, mobile devices, IoT sensors, smart home products, and environmental monitoring systems. It integrates calibrated humidity and temperature sensing elements with a digital I²C interface in a compact 2 mm × 2 mm DFN package. Key Features Measures both relative humidity and temperature Humidity accuracy of up to ±2% RH Wide humidity measurement range: 0% to 100% RH Integrated digital I²C interface Ultra-low power consumption optimized for battery-operated devices Supply voltage range: 1.62 V to 3.6 V Compact 4-pin DFN (2 × 2 mm) surface-mount package Fully calibrated and temperature compensated Fast response time suitable for real-time environmental sensing Operating temperature range: −40°C to +125°C Supports sleep and low-power operating modes for portable electronics Typical Applications Wearable devices Smartphones and tablets HVAC and smart thermostats IoT environmental monitoring Home automation systems Portable weather stations Consumer electronics #CommonPartsLibrary #Sensor

Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount The SHT41-AD1B-R3 is a high-precision digital humidity and temperature sensor developed by Sensirion. It integrates calibrated sensing elements, analog signal processing, and a digital communication interface within a compact surface-mount package optimized for space-constrained embedded applications. The device is designed for accurate environmental monitoring across industrial, consumer, HVAC, portable electronics, and IoT systems. The sensor utilizes Sensirion CMOSens® technology to provide stable long-term performance, fast response time, and excellent repeatability under varying environmental conditions. Factory calibration enables direct digital output without the need for external calibration circuitry. The integrated I²C interface simplifies system integration with microcontrollers and embedded processors. The SHT41-AD1B-R3 is engineered for low-power operation, making it suitable for battery-powered and energy-efficient designs. Its compact DFN package supports automated assembly processes and high-density PCB layouts. The device also incorporates advanced internal diagnostics and checksum protection to improve communication reliability and data integrity. Features High-accuracy relative humidity sensing High-accuracy temperature measurement Fully calibrated and linearized digital output I²C digital communication interface Low power consumption optimized for portable systems Fast response and measurement conversion time Excellent long-term stability and repeatability Integrated heater functionality for condensation mitigation Wide operating voltage range Compact surface-mount DFN package Factory-trimmed and tested performance High immunity to environmental stress and contamination Low drift over product lifetime Suitable for reflow soldering processes Electrical Characteristics Supply voltage supports low-voltage embedded systems Digital communication compatible with standard I²C hosts Low standby current consumption Optimized active measurement current Integrated CRC data protection for communication integrity Environmental Characteristics Wide operating temperature range Wide relative humidity operating range Designed for high reliability in industrial and consumer environments Resistant to moisture-induced performance degradation Supports long operational lifetime with stable calibration Package Information Compact DFN surface-mount package Moisture-sensitive device suitable for automated assembly RoHS compliant and halogen-free construction Tape-and-reel packaging configuration for production assembly Applications Environmental monitoring systems HVAC and climate control equipment Smart home and IoT devices Portable electronics Industrial automation systems Data loggers and instrumentation Weather monitoring equipment Indoor air quality monitoring Battery-powered sensor nodes Consumer electronic products #commonpartslibrary #sensor #temperature #humidity #environmentalsensor #i2c #embedded #industrial #iot #sensirion

IC RF TxRx + MCU General ISM < 1GHz LoRaWAN 1.0, Sigfox 915MHz 73-UFBGA The STM32WL55JCI6TR is an ultra-low-power wireless microcontroller developed by STMicroelectronics. It integrates a high-performance Arm Cortex-M4 core with a secondary Arm Cortex-M0+ core and a sub-GHz radio transceiver within a single package. The device is designed for long-range wireless communication, industrial automation, smart metering, environmental monitoring, asset tracking, and Internet of Things applications. Its highly integrated architecture reduces external component count while providing secure, energy-efficient operation suitable for battery-powered and embedded systems. #STM32WL55JCI6TR #STM32WL #STM32 #STMicroelectronics #Microcontroller #WirelessMCU #LoRa #SubGHz #IoT #EmbeddedSystems #IndustrialAutomation #SmartMetering #LowPowerDesign #WirelessCommunication #RemoteMonitoring

Mass Air Flow Sensor, Open-drain, 10 Pin The FS3000-1005 is a fully integrated, MEMS-based air velocity (flow) sensor designed for precise and reliable measurement of gas flow in compact systems. It utilizes a thermal transfer principle and includes onboard signal conditioning, calibration, and digital output, making it suitable for direct interface with microcontrollers. This sensor is optimized for low-flow air or gas applications such as HVAC systems, environmental monitoring, airflow detection in consumer electronics, and industrial process control. Its compact surface-mount package allows easy integration into space-constrained designs. Key Features MEMS thermal-based air velocity sensing Fully calibrated and temperature compensated Digital I²C output interface High sensitivity for low airflow detection Fast response time Compact surface-mount package Low power consumption Electrical Characteristics Supply Voltage: 3.0 V to 3.6 V (typ. 3.3 V) Current Consumption: ~10 mA (typical during operation) Interface: I²C (up to 400 kHz) Output Type: Digital (flow velocity data) Performance Characteristics Flow Range: 0 to 7.23 m/s (air velocity) Accuracy: ±5% of reading (typical) Response Time: <10 ms Repeatability: High precision with low drift Mechanical Characteristics Package Type: Surface Mount (SMD) Dimensions: Approx. 4 mm × 4 mm × 1 mm Port Type: Top-port airflow sensing Environmental Specifications Operating Temperature Range: -20°C to +85°C Storage Temperature Range: -40°C to +125°C Pin Configuration (Typical) VDD – Power supply GND – Ground SCL – I²C clock line SDA – I²C data line ADDR/SEL – I²C address select (if applicable) Applications HVAC airflow monitoring Air purifiers and smart home systems Industrial gas flow measurement Medical airflow sensing devices Consumer electronics thermal management Compliance & Reliability RoHS compliant Factory calibrated Long-term stability with minimal recalibration required #commonpartslibrary #integratedcircuit #sensor

Temperature Sensor Digital, Local -40°C ~ 125°C 16 b 4-PICOSTAR (0.76x0.76) The TMP114NCIYMTR is a high-accuracy digital temperature sensor designed for precision thermal monitoring applications in industrial, automotive, medical, and embedded electronic systems. The device integrates a precision band-gap temperature sensing element, analog-to-digital conversion circuitry, EEPROM memory, and a digital communication interface within a compact low-power package. The sensor supports accurate local temperature measurements with factory calibration and programmable alert functionality, enabling reliable thermal protection and environmental monitoring in space-constrained designs. Engineering Specification Manufacturer: Texas Instruments Manufacturer Part Number: TMP114NCIYMTR Device Type: Digital Temperature Sensor Temperature Measurement Method: Local Semiconductor Temperature Sensing Interface Type: I²C-Compatible Serial Interface Supply Voltage Range: Ultra-Low Voltage Operation Compatible with Battery-Powered Systems Temperature Measurement Range: Industrial Temperature Range Support Accuracy: High-Precision Factory-Calibrated Temperature Measurement Resolution: High-Resolution Digital Temperature Output Conversion Architecture: Integrated Sigma-Delta Analog-to-Digital Conversion Programmable Features: High and low temperature alert thresholds EEPROM-stored configuration settings Programmable conversion rate Offset correction calibration Alert and interrupt functionality Power Consumption: Optimized for Low-Power Embedded Applications Communication Speed: Standard and Fast-Mode I²C Support Package Type: Small Outline Leadless Package Mounting Type: Surface Mount Technology Operating Environment: Suitable for Industrial and Embedded Control Systems Protection Features: Integrated thermal monitoring alerts Nonvolatile configuration retention Robust digital communication interface Applications: Industrial temperature monitoring Medical instrumentation Battery-powered electronics Thermal management systems Precision embedded sensing Data acquisition equipment Environmental monitoring devices #commonpartslibrary #integratedcircuit #temperaturesensor #digital

Air Quality Sensors VOC and NOx (MOX) Gas Pollutant Sensor The SGP41-D-R4 is a compact digital gas sensor developed by Sensirion for indoor air quality monitoring applications. It is designed to detect volatile organic compounds (VOC) and nitrogen oxides (NOx) using Sensirion’s CMOSens® sensor technology. The device integrates sensing elements, analog front-end circuitry, calibration memory, and digital signal processing within a miniature surface-mount package, enabling accurate and reliable environmental sensing with minimal external components. The sensor communicates through a standard I²C digital interface and is optimized for low-power operation, making it suitable for battery-powered and portable electronic systems. The SGP41 is intended for use in air purifiers, HVAC systems, smart home devices, wearable electronics, environmental monitoring equipment, and other applications requiring real-time indoor air quality assessment. The device supports humidity-compensated measurements when paired with an external humidity and temperature sensor, improving long-term stability and measurement accuracy. Factory calibration eliminates the need for manual calibration during manufacturing. Key Features Digital VOC and NOx gas sensing CMOSens® technology integration I²C communication interface Fully calibrated and linearized output Humidity compensation capability Low power consumption operation Compact DFN surface-mount package Fast response and recovery characteristics Optimized for indoor air quality applications RoHS and halogen-free compliant Electrical Characteristics Supply voltage operation compatible with low-voltage embedded systems Low average current consumption suitable for portable devices Integrated digital signal processing and calibration memory I²C serial communication support with standard addressing Stable operation across industrial temperature ranges Mechanical Characteristics Small DFN package optimized for compact PCB layouts Surface-mount assembly compatible Low-profile package suitable for space-constrained designs Moisture-sensitive device requiring proper handling during assembly Functional Characteristics Simultaneous VOC and NOx sensing capability Real-time indoor air quality monitoring Compensation support for environmental humidity effects Long-term measurement stability Fast startup and measurement readiness Designed for continuous sensing applications Typical Applications Indoor air quality monitoring systems Smart thermostats and HVAC controllers Air purifiers and ventilation systems Smart home and IoT devices Portable environmental monitoring equipment Wearable health and wellness devices Building automation systems Consumer electronics requiring air quality detection #Sensor #Transducer #Gas#Sensor #SGP41

Temperature Sensor Digital, Local -55°C ~ 150°C 16 b 6-WSON (2x2) The TMP117AIDRVR is a high-precision digital temperature sensor manufactured by Texas Instruments. The device provides accurate temperature measurements through an I²C-compatible digital interface and is optimized for applications requiring medical-grade accuracy, low power consumption, and compact PCB footprint. The sensor integrates a precision temperature sensing element, analog-to-digital converter, calibration memory, and digital interface into a single compact package. The device supports continuous conversion and shutdown operating modes, enabling efficient thermal monitoring in battery-powered and always-on systems. Internal calibration minimizes external component requirements while providing highly linear and repeatable temperature measurements across an extended operating range. The TMP117AIDRVR is commonly used in industrial controls, wearable electronics, healthcare equipment, environmental monitoring systems, battery management systems, consumer electronics, and precision instrumentation. Electrical Characteristics Supply voltage supports low-voltage digital systems and portable electronics applications. Ultra-low operating current enables long battery life in energy-sensitive designs. Integrated EEPROM allows programmable offset correction and configuration storage. Digital output eliminates the need for external ADC circuitry. High measurement resolution supports precision thermal monitoring applications. Low self-heating characteristics improve measurement stability and accuracy. Functional Features High-accuracy digital temperature sensing. I²C and SMBus compatible communication interface. Programmable alert functionality for thermal threshold monitoring. Continuous conversion and low-power shutdown operating modes. Integrated non-volatile memory for user configuration storage. Wide operating temperature range for industrial and commercial environments. Fast conversion timing suitable for real-time monitoring systems. Factory-calibrated performance requiring minimal external calibration. Package Information Package type is WSON with compact surface-mount footprint suitable for dense PCB layouts. Moisture-sensitive package designed for automated assembly processes. Lead-free and RoHS-compliant construction. Typical Applications Medical thermometers and patient monitoring systems. Industrial temperature monitoring equipment. Battery-powered portable electronics. HVAC and environmental sensing systems. Data acquisition and instrumentation systems. Server and embedded thermal management applications. Consumer electronics requiring precision thermal sensing. #commonpartslibrary #integratedcircuit #temperaturesensor

Pressure Sensor 4.35PSI ~ 18.13PSI (30kPa ~ 125kPa) 9-LGA The BMP585 is a high-precision digital barometric pressure sensor designed for accurate altitude and environmental pressure measurement in compact, low-power embedded systems. It integrates a MEMS sensing element with advanced signal conditioning and digital compensation circuitry to provide highly stable and reliable pressure and temperature data across a wide operating range. The device is optimized for portable electronics, industrial sensing, indoor navigation, weather monitoring, drones, and IoT applications requiring precise atmospheric measurements. The sensor supports digital communication through standard serial interfaces, enabling straightforward integration with modern microcontrollers and processors. Its low noise performance, high resolution, and fast response characteristics make it suitable for applications involving motion tracking, vertical positioning, and environmental monitoring. The compact surface-mount package allows efficient PCB layout integration in space-constrained designs. The BMP585 incorporates configurable sampling, filtering, and power management features to balance measurement accuracy, bandwidth, and energy consumption. Internal calibration and compensation algorithms reduce system-level complexity while improving long-term stability and measurement consistency. The device is designed for robust operation under varying environmental conditions and supports low-power modes for battery-operated systems. Engineering Specification Device Type Digital barometric pressure and temperature sensor Sensor Functions Atmospheric pressure sensing Temperature sensing Altitude estimation support Pressure Measurement High-resolution MEMS pressure sensing element Integrated digital compensation and calibration Low-noise pressure measurement architecture Temperature Measurement Integrated temperature sensing for environmental monitoring and pressure compensation Communication Interface I²C interface support SPI interface support Power Features Low-power operation Configurable performance and sampling modes Sleep and standby operating capability Signal Processing Integrated digital filtering Configurable oversampling Internal compensation engine Package Information Compact surface-mount package RoHS-compliant construction Operating Characteristics High measurement stability Fast response time Designed for portable and industrial environments Application Areas Wearable devices Indoor navigation systems Portable weather stations Industrial monitoring IoT sensing nodes Drones and altitude tracking systems Consumer electronics #commonpartslibrary #integratedcircuit #pressuresensor

Cellular, Navigation BeiDou, EGDE, Galileo, GLONASS, GPS, GNSS, GSM, LTE Transceiver Module 850MHz, 900MHz, 1.8GHz, 1.9GHz Antenna Not Included Surface Mount The BG95M3LA-64-SGNS is a compact low-power LTE cellular communication module designed for IoT, telematics, asset tracking, industrial automation, and embedded wireless applications. The module supports global LTE Cat M1, Cat NB2, and EGPRS connectivity, enabling reliable wide-area wireless communication for battery-powered and mobile embedded systems. The device integrates cellular modem functionality, GNSS positioning capability, power management features, and multiple peripheral communication interfaces within a highly compact surface-mount package optimized for space-constrained embedded designs. The module is engineered for low-power operation, making it suitable for long-life IoT deployments requiring efficient wireless connectivity. The BG95M3LA-64-SGNS supports integrated satellite positioning technologies including GPS, GLONASS, Galileo, and BeiDou for location-aware applications. Its robust RF performance and industrial-grade operating capability allow deployment in harsh environmental conditions and demanding remote monitoring systems. The module provides comprehensive support for embedded communication protocols and is commonly used in smart meters, telematics units, industrial gateways, environmental monitoring systems, fleet tracking devices, and connected sensor platforms. Key Features LTE Cat M1 cellular communication support LTE Cat NB2 narrowband IoT capability EGPRS fallback connectivity Integrated GNSS positioning functionality Low-power optimized architecture Global wireless network compatibility Compact surface-mount module design Embedded TCP/IP protocol stack support UART, USB, and serial communication interfaces Integrated power management subsystem Industrial operating temperature support Embedded IoT connectivity optimization High-reliability wireless communication platform Multi-constellation satellite navigation support Electrical Characteristics Low operating power consumption Wide input voltage support High RF sensitivity performance Embedded low-power sleep functionality Stable wireless communication architecture Integrated RF and baseband processing Optimized antenna interface support Industrial-grade reliability performance Fast network registration capability Applications IoT and M2M communication systems Asset tracking devices Fleet management platforms Smart utility metering Industrial automation equipment Remote environmental monitoring Smart agriculture systems Telematics and transportation electronics Portable wireless data terminals Embedded gateway systems Smart city infrastructure Connected sensor platforms Package Information Package Type: LGA Module Mounting Type: Surface Mount Compact embedded wireless module package RoHS compliant configuration available #commonpartslibrary #wirelessmodule #lte #iot #embeddedhardware #cellularcommunication #gnss #telematics #industrialautomation #assettracking

11-Channel Spectral Sensor Frontend The AS7341-DLGM is a multi-channel spectral sensor developed by ams OSRAM, designed for advanced color measurement, spectral analysis, and ambient light sensing applications. The device integrates multiple optical channels covering visible and near-infrared wavelengths, enabling precise detection of light characteristics across a broad spectrum. Its compact surface-mount package, integrated analog front-end, and digital processing capabilities make it suitable for consumer electronics, industrial instrumentation, smart lighting systems, display calibration, agricultural sensing, and portable analytical devices. The sensor features highly sensitive photodiodes combined with optical filters that allow accurate spectral discrimination. Communication is performed through a standard digital interface, facilitating integration with microcontrollers, embedded systems, and IoT platforms. The AS7341 supports configurable measurement modes, programmable gain control, and interrupt functions for efficient system-level implementation. Key Features Multi-channel spectral sensing architecture Visible and near-infrared light detection capability Integrated optical interference filters High-sensitivity photodiode array Ambient light sensing functionality Advanced color measurement and analysis Programmable gain and integration settings Digital output with I²C communication interface Low-power operating characteristics Integrated interrupt and event detection functions Compact surface-mount package Suitable for portable and battery-powered designs High accuracy across varying lighting conditions Supports spectral identification and classification applications Optimized for display, lighting, and environmental monitoring systems Applications Color measurement instruments Spectral analysis equipment Smart lighting control systems Display color calibration Industrial automation sensors Agricultural monitoring devices Ambient light sensing applications Consumer electronics Wearable devices IoT sensing platforms Scientific and laboratory instruments Optical monitoring systems Electrical and Functional Characteristics Multi-channel optical sensing engine Digital signal processing architecture Configurable integration timing Adjustable sensitivity and gain control Low-noise measurement performance High dynamic range operation Fast measurement response capability Integrated spectral filtering technology Embedded register-based configuration Interrupt-driven event monitoring support Mechanical Characteristics Compact surface-mount package PCB-friendly footprint RoHS-compliant construction Suitable for automated assembly processes Optimized optical window design #commonpartslibrary #sensor #opticalsensor #spectralsensor #colorsensor #ambientlightsensor #amsosram #embeddedsystems #industrialelectronics #iot #measurement #environmentalsensing #consumerelectronics #smartlighting #electronicsdesign

Bus Switch 1 x 8:1 24-VQFN (4x4) # TCA9548ARGER Engineering Specifications **General Description** The TCA9548ARGER is a low-voltage I²C and SMBus switch manufactured by Texas Instruments. It is designed to expand and manage I²C communication networks by allowing a single master device to selectively communicate with multiple downstream buses through independent switching channels. The device functions as a bidirectional translating switch, enabling communication between devices operating at different voltage levels while maintaining protocol compatibility. Through software control, individual channels can be enabled or disabled, providing flexible bus segmentation, address conflict resolution, and system scalability. The TCA9548ARGER is widely used in embedded systems, industrial control equipment, data acquisition platforms, telecommunications hardware, server management systems, sensor networks, and Internet of Things applications where multiple I²C devices must be connected to a single controller. Its low-power CMOS architecture, integrated reset functionality, and hot-insertion support make it suitable for complex digital systems requiring reliable and efficient I²C bus management. **Engineering Specifications** **Manufacturer:** Texas Instruments **Manufacturer Part Number:** TCA9548ARGER **Component Type:** I²C bus switch and multiplexer **Technology:** Low-voltage CMOS **Interface Standard:** I²C and SMBus compatible **Switch Configuration:** Multiple downstream I²C channel selection **Channel Operation:** Software-controlled channel enable and disable **Communication Direction:** Bidirectional signal transmission **Voltage Translation Capability:** Supports communication between devices operating at different logic voltages **Bus Isolation Function:** Independent channel isolation for address conflict management **Control Method:** I²C command-based channel selection **Address Selection:** Configurable device addressing through hardware address pins **Power Supply Configuration:** Single-supply operation **Power Consumption:** Low-power operation suitable for embedded applications **Signal Integrity Features:** Low ON-state resistance and low propagation delay **Reset Function:** Dedicated hardware reset input **Hot Insertion Support:** Prevents bus disruption during device insertion and removal **Fail-Safe Characteristics:** Protection against unintended bus communication during power transitions **Bus Capacitance Management:** Improves communication reliability in large I²C networks **System Scalability:** Supports expansion of sensor, peripheral, and control-device networks **Electrostatic Protection:** Integrated ESD protection circuitry **Operating Temperature Range:** Industrial temperature range **Package Type:** VQFN surface-mount package **Mounting Style:** Surface mount technology **Package Construction:** Leadless thermally efficient package **Environmental Compliance:** RoHS compliant and lead-free **Reliability Features:** Designed for high-reliability industrial and embedded applications **Typical Applications** I²C bus expansion systems Sensor aggregation networks Industrial automation equipment Embedded controller platforms Server management systems Data acquisition hardware Telecommunications equipment Internet of Things devices Medical instrumentation Consumer electronics Robotics and automation systems Environmental monitoring devices Smart building control systems Automotive electronic subsystems Multi-sensor embedded applications #TCA9548A #TCA9548ARGER #TexasInstruments #I2C #SMBus #BusMultiplexer #I2CSwitch #EmbeddedSystems #IndustrialAutomation #SensorNetworks #IoT #DataAcquisition #ElectronicsEngineering #ElectronicComponents #EngineeringSpecifications

24 Bit Analog to Digital Converter 4 Input 4 Sigma-Delta 56-LFCSP-WQ (8x8) The AD4134BCPZ is a high-precision, ultra-low-power analog-to-digital converter designed for industrial and instrumentation applications requiring accurate measurement of low-bandwidth sensor signals. It integrates multiple fully differential or pseudo-differential input channels with advanced signal conditioning and digital filtering functions to support precision data acquisition systems. The device is optimized for applications such as process control, temperature measurement, pressure sensing, weigh scales, and portable instrumentation where low noise, high resolution, and reduced power consumption are critical. Its integrated excitation currents, programmable gain stages, and flexible interface architecture simplify external circuitry and improve overall system integration. Engineering Specification Device Type Precision low-power sigma-delta analog-to-digital converter Resolution Twenty-four-bit conversion architecture Input Channels Multiple analog input channels supporting differential and pseudo-differential configurations Architecture Sigma-delta ADC with integrated digital filtering Sampling Capability Programmable output data rates with simultaneous optimization of noise and power performance Input Signal Support Compatible with low-level sensor outputs including RTDs, thermocouples, bridge sensors, and resistive sensors Programmable Gain Integrated programmable gain amplifier for small signal conditioning Reference Support Internal reference and external reference compatibility Noise Performance Low input-referred noise optimized for precision sensing applications Power Consumption Ultra-low-power operating modes with configurable performance scaling Excitation Features Integrated programmable excitation current sources for sensor biasing Filtering Functions On-chip digital filtering including rejection of industrial mains frequencies Interface SPI-compatible serial digital communication interface Supply Voltage Operates from low-voltage analog and digital supply rails Temperature Range Industrial operating temperature range suitable for harsh environments Package Type LFCSP package with compact footprint for space-constrained designs Applications Industrial automation, medical instrumentation, portable measurement systems, environmental monitoring, precision sensor interfaces, and data acquisition modules. #CommonPartsLibrary #IntegratedCircuit #ADC

Air Quality Sensor CO2 Sensor 2.5V/3.3V/5V 20-Pin SMD EP T/R The SCD41-D-R1 is a miniature photoacoustic carbon dioxide sensor module developed by Sensirion for high-accuracy environmental sensing applications. The device integrates a CO₂ sensing element, temperature sensor, humidity sensor, optical components, calibration memory, and digital signal processing into a compact surface-mount package suitable for embedded systems and portable electronics. The sensor utilizes photoacoustic sensing technology to provide precise carbon dioxide concentration measurements while maintaining low power consumption and long-term stability. Integrated humidity and temperature sensing capabilities enable environmental compensation and simplify system integration by reducing the need for external sensors. The SCD41 communicates through a standard I²C digital interface and supports automatic self-calibration functions for reliable long-term operation. Its compact footprint and low energy requirements make it suitable for battery-powered devices, smart building systems, HVAC equipment, indoor air quality monitoring systems, and IoT applications. The module is factory calibrated and designed for continuous monitoring of indoor air quality conditions. The integrated architecture minimizes external component requirements while enabling accurate sensing performance across a wide operating range. Key Features Photoacoustic CO₂ sensing technology Integrated temperature and humidity sensing High accuracy carbon dioxide measurement I²C digital communication interface Low power consumption operation Automatic self-calibration support Compact surface-mount package Factory calibrated output Long-term measurement stability Optimized for indoor air quality applications Low-profile PCB mounting design RoHS and halogen-free compliant Electrical Characteristics Low-voltage supply operation Low average current consumption suitable for portable devices Integrated digital signal processing Non-volatile calibration memory Standard I²C communication compatibility Stable operation across industrial environmental conditions Mechanical Characteristics Compact SMD package for space-constrained applications Surface-mount assembly compatible Low-profile package structure Integrated optical cavity and sensing chamber Moisture-sensitive device requiring controlled handling during assembly Functional Characteristics Real-time carbon dioxide concentration monitoring Simultaneous temperature and humidity measurement Automatic environmental compensation Continuous and periodic measurement modes Fast startup and measurement response Long operational lifetime with stable calibration Optimized airflow design for accurate sensing Suitable for continuous indoor environmental monitoring Typical Applications Indoor air quality monitoring systems Smart thermostats and HVAC controllers Building automation equipment Demand-controlled ventilation systems Portable environmental monitoring devices Smart home and IoT products Air purification systems Occupancy and ventilation monitoring Battery-powered sensing devices Consumer and industrial environmental monitoring equipment #commonpartslibrary #sensor #airquality

ARM® Cortex®-M0+ STM32U0 Microcontroller IC 32-Bit 56MHz 256KB (256K x 8) FLASH 48-LQFP (7x7) # STM32U083CCT6 ## General Description The STM32U083CCT6 is an ultra-low-power microcontroller from STMicroelectronics based on the Arm Cortex-M0+ core. It is specifically designed for energy-efficient embedded applications requiring long battery life, advanced peripheral integration, secure operation, and reliable real-time performance. The device combines low-power processing, embedded Flash memory, SRAM, analog peripherals, communication interfaces, and hardware security features within a compact package. Its architecture makes it ideal for smart sensors, industrial monitoring systems, medical devices, wearable electronics, smart metering, home automation products, and Internet of Things applications where power efficiency is a primary design requirement. ## Key Features ### Processing Architecture * Arm Cortex-M0+ processor core * Optimized low-power computing architecture * Efficient real-time processing capability * Interrupt-driven operation support * Embedded system control functionality ### Memory Resources * Embedded Flash memory * Integrated SRAM * Non-volatile data storage support * High-reliability memory architecture * Efficient code execution capability ### Low-Power Features * Ultra-low-power operating modes * Multiple sleep and standby modes * Fast wake-up capability * Battery-powered application optimization * Energy-efficient peripheral operation * Extended product operating life in portable systems ### Security Features * Hardware security mechanisms * Memory protection functionality * Secure firmware execution support * Data integrity protection * Secure embedded application development support ### Communication Interfaces * USART communication interfaces * UART communication support * SPI serial communication interfaces * I²C communication interfaces * Low-power communication capability * Flexible external device connectivity ### Analog Features * Analog-to-digital conversion capability * Precision signal acquisition support * Integrated analog peripherals * Sensor interface compatibility * Low-power analog operation ### Timer and Control Functions * General-purpose timers * PWM signal generation * Real-time clock functionality * Event-driven control capability * Timing and scheduling support ### Package Characteristics * Surface-mount package * Compact footprint design * Automated assembly compatibility * Suitable for space-constrained applications * Industrial-grade packaging ### Material Construction * Advanced low-power semiconductor technology * RoHS-compliant materials * Lead-free package construction * High-reliability integrated circuit design ### Environmental Characteristics * Suitable for industrial and commercial environments * Long operational service life * Stable performance under continuous operation * Robust low-power architecture ### Application Areas * Internet of Things Devices * Smart Sensors * Wearable Electronics * Medical Monitoring Equipment * Home Automation Systems * Smart Metering Applications * Battery-Powered Products * Environmental Monitoring Systems * Industrial Data Acquisition Equipment * Consumer Electronics * Portable Embedded Systems * Wireless Sensor Nodes ### Compliance * RoHS Compliant * Lead-Free Compatible * Industrial-Grade Embedded Microcontroller Solution ## Manufacturer STMicroelectronics ## Product Family STM32U0 Ultra-Low-Power Microcontroller Series #STM32U083CCT6 #STM32U0 #STMicroelectronics #Microcontroller #UltraLowPowerMCU #CortexM0Plus #EmbeddedSystems #IoT #SmartSensors #WearableElectronics #BatteryPoweredDevices #IndustrialElectronics #EmbeddedDesign #FirmwareDevelopment #ElectronicsEngineering

Board Mount Humidity Sensors Intermediate Humidity and Temperature Sensor Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount The SHT41-AD1B-R2 is a fully calibrated, low-power environmental sensor that measures relative humidity (RH) and temperature. It integrates sensing elements, signal processing, and a digital interface into a small surface-mount package, making it ideal for space-constrained designs. Key Features Sensor Type: Digital humidity and temperature sensor Interface: I²C (easy MCU integration) Supply Voltage: ~1.08 V to 3.6 V Humidity Accuracy: up to ±1.8% RH (typical) Temperature Accuracy: up to ±0.2 °C (typical) Response Time: Fast measurement and low latency Power Consumption: Ultra-low, suitable for battery devices Package: DFN (compact, ~1.5 × 1.5 mm) Factory Calibration: No external calibration required Functional Overview The sensor uses capacitive humidity sensing combined with a bandgap temperature sensor. Internal electronics convert these measurements into digital data via I²C, eliminating the need for external ADCs or complex signal conditioning. Design Advantages Small footprint for compact PCBs Low power consumption for IoT and portable devices High reliability with long-term stability Fast response time for real-time monitoring Simple integration with microcontrollers Typical Applications IoT and smart home devices HVAC and climate control systems Wearables and portable electronics Industrial monitoring systems Environmental data logging #CommonPartsLibrary #Sensors,-Transducer #Humidity #Moisture-Sensor #SHT4x