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The XIAO RA4M1 integrates Renesas' RA4M1 chip (32-bit ARM® Cortex®-M4 MCU up to 48 MHz) into the classic XIAO form factor.

555 Type, Timer/Oscillator (Single) IC 100kHz 8-PDIP NE555 DIP-8 through hole The NE555P is a classic and widely used precision timer IC manufactured by companies like Texas Instruments and others. It belongs to the popular 555 timer family and is designed for generating accurate time delays, oscillations, and pulse signals. The “P” variant refers to the PDIP (Plastic Dual In-line Package), making it ideal for through-hole mounting, breadboarding, and prototyping. NE555P PDIP-8 timer Internally, the NE555P consists of: Two comparators A flip-flop A discharge transistor A voltage divider network These blocks allow flexible configuration for timing and waveform generation. Key Features Timing & Operation Modes Monostable mode (one-shot pulse generation) Astable mode (continuous oscillator) Bistable mode (flip-flop operation) Electrical Characteristics Supply voltage range: 4.5V to 16V Output can source or sink up to 200 mA Adjustable duty cycle Performance High timing accuracy and stability Timing range from microseconds to hours (depends on external R and C) Temperature-stable operation Package & Usability 8-pin DIP (through-hole) package Easy to use for: Breadboards DIY electronics Educational projects Common Applications LED flashers and blinkers Pulse generation Time delay circuits PWM control (e.g., dimming LEDs, motor speed control) Tone/sound generation #Timer #commonpartslibrary

Bipolar (BJT) Transistor NPN 40V 200mA 300MHz 350mW Surface Mount SOT-23 The MMBT3904-TP is an NPN general-purpose bipolar junction transistor (BJT) in a SOT-23 surface-mount package. It is a compact SMD version of the classic 2N3904, designed for switching and low-power signal amplification in a wide range of electronic circuits. It is commonly used in embedded systems, consumer electronics, and PCB designs where small size and reliable switching performance are required. Key Features NPN Bipolar Junction Transistor (BJT) Suitable for switching and amplification applications SOT-23 Surface-Mount Package Compact footprint for high-density PCB designs Collector-Emitter Voltage (Vceo) Typically up to 40V Collector Current Up to 200 mA continuous Low Power Operation Designed for small signal and low-power switching tasks High Gain (hFE) DC current gain typically 100–300 Fast Switching Capability Suitable for digital and pulse applications Wide Operating Temperature Range Typically -55°C to +150°C High Reliability Stable performance for general-purpose use RoHS Compliant Environmentally compliant manufacturing Typical Applications Signal switching in digital circuits LED driving circuits Small relay or load switching Sensor interface circuits General-purpose amplification stages 2N3904 SOT-23 #CommonPartsLibrary #Transistor #BJT #NPN #MMBT3904

The XIAO RP2350 packs the power of the Raspberry Pi RP2350 (switchable architecture of dual Arm Cortex-M33 cores running at 150MHz with FPU, and dual open-hardware Hazard3 RISC‑V cores, enhanced security and encryption) into the classic XIAO form factor. Measuring just 21x17.5mm, it features 19 multifunction GPIOs, an RGB LED, and a Battery Management System with ultra-low power consumption of 27μA, battery power supply, and direct battery voltage measurement. Thanks to the XIAO ecosystem, the XIAO RP2350 is compatible with a wide range of add-ons, including displays, LED matrix, Grove modules, CAN Bus, Vision AI sensors, and mmWave sensors. With native support for MicroPython, C, and C++, the XIAO RP2350 is perfect for developers of all levels looking to create compact, battery-powered applications for smart control, wearables, DIY keyboards, and more.

- ESP32-WROOM-32UE Transceiver; 802.11 b/g/n (Wi-Fi, WiFi, WLAN), Bluetooth® Smart Ready 4.x Dual Mode 2.4GHz Evaluation Board The ESP32-DEVKITC-32UE is a development board based on the ESP32 series SoC designed by Espressif. It is widely used for IoT, embedded systems, and wireless communication applications due to its built-in Wi-Fi and Bluetooth capabilities. Microcontroller: ESP32 dual-core Tensilica LX6 processor Wireless Connectivity: Wi-Fi (802.11 b/g/n) and Bluetooth (Classic + BLE) Flash Memory: Integrated SPI flash (varies by module version) Development Interface: USB-to-UART bridge for easy programming and debugging Power Supply: Typically powered via USB or external 5V input GPIO Pins: Multiple multifunction GPIOs supporting ADC, DAC, PWM, SPI, I2C, UART, etc. Supports deep sleep and ultra-low power modes Multiple peripheral interfaces (SPI, I2C, UART, SDMMC, PWM) Compatible with ESP-IDF, Arduino IDE, and MicroPython Built-in antenna (UE variant uses U.FL or external antenna option depending on module design) IoT devices and smart home systems Wireless sensor networks Data logging and monitoring systems Robotics and automation Embedded control systems #commonpartslibrary #developmentboard #esp32 #wroom

The XIAO RP2350 packs the power of the Raspberry Pi RP2350 (switchable architecture of dual Arm Cortex-M33 cores running at 150MHz with FPU, and dual open-hardware Hazard3 RISC‑V cores, enhanced security and encryption) into the classic XIAO form factor. Measuring just 21x17.5mm, it features 19 multifunction GPIOs, an RGB LED, and a Battery Management System with ultra-low power consumption of 27μA, battery power supply, and direct battery voltage measurement. Thanks to the XIAO ecosystem, the XIAO RP2350 is compatible with a wide range of add-ons, including displays, LED matrix, Grove modules, CAN Bus, Vision AI sensors, and mmWave sensors. With native support for MicroPython, C, and C++, the XIAO RP2350 is perfect for developers of all levels looking to create compact, battery-powered applications for smart control, wearables, DIY keyboards, and more.

Microchip KEELOQ classic / ultimate encoder - keyfob IC sending button state, serial and authentiation as PWM/manchester encoded AM/FM signal in ISM bands KEELOQ classic ultimate keyless entry keyfob ISM TSSOP*4.4x6.5mm?P0.65mm*

DIODE GP 75V 150mA SOD-123 The 1N4148 (SOD-123) is a silicon epitaxial planar switching diode designed for fast switching applications. It is widely used in surface-mount designs as the SMD version of the classic 1N4148 (DO-35 through-hole type). It is mainly used for low-current, high-speed switching circuits, such as signal clamping, protection, logic circuits, and general rectification in small electronics. Key Features Fast switching speed (reverse recovery time typically ≤ 4 ns) Reverse voltage up to 100 V (peak) Average forward current: ~150 mA Compact SOD-123 surface-mount package (2-pin SMD) Low power dissipation (~400–500 mW depending on manufacturer) Low reverse leakage current (very small, µA or less) Low junction capacitance (~2–4 pF typical) for high-speed operation Wide operating temperature range: -55°C to +150°C Suitable for automatic PCB assembly (SMT reflow compatible) #CommonPartsLibrary #Diode

2.4GHz -98dBm SMD,19.2x18mm RF Transceiver Modules and Modems RoHS The ESP32-WROOM-32UE-N16 is a 2.4 GHz wireless MCU module built around the ESP32 SoC. It combines a dual-core processor, integrated Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 (Classic + BLE), along with rich peripherals. The “UE” variant specifically uses a U.FL / IPEX connector for an external antenna, making it ideal for applications that require better RF performance or flexible antenna placement (e.g., enclosed products or long-range communication). The “N16” indicates 16 MB external flash memory, suitable for large firmware, OTA updates, and data-heavy applications. Processing Dual-core Xtensa LX6 32-bit CPU Clock speed up to 240 MHz Memory 16 MB Flash (N16 variant) ~520 KB SRAM + 448 KB ROM Connectivity Wi-Fi: 802.11 b/g/n (up to 150 Mbps) Bluetooth: v4.2 (BR/EDR + BLE) Frequency: 2.4 GHz band Antenna External antenna via U.FL connector Better range and flexibility vs PCB antenna Interfaces / Peripherals GPIO (≈26 usable pins) UART, SPI, I2C, I2S, SDIO ADC, DAC PWM (LED & motor control) Capacitive touch sensing Security Hardware encryption: AES, SHA, RSA Secure boot & flash encryption support Power Operating voltage: 3.0V – 3.6V (typ. 3.3V) Multiple low-power modes for battery applications Environmental Operating temperature: -40°C to +85°C Physical Surface-mount module (~38 pins / 52 pads depending on reference) Compact and RF-shielded design Typical Applications Smart home devices (IoT) Industrial automation Wireless sensors and data loggers Wearables and consumer electronics Remote monitoring systems #Module #ESP32

Timer ICM7555IPA+ DIP-8_L10.1-W6.3-P2.54-LS7.6-BL LCSC Part Number: C1520201 ICM7555 / ICM7556 CMOS Precision Timer – low-power general-purpose timer IC compatible with the classic 555 timer architecture. Available as a single timer (ICM7555) or dual timer (ICM7556). Designed for accurate timing, pulse generation, pulse-width modulation (PWM), frequency generation, delay circuits, oscillators, and sequential timing applications. Features ultra-low supply current, wide operating voltage range (2 V to 18 V), TTL compatibility, adjustable duty cycle, and improved CMOS performance compared to standard bipolar 555 timers. Search Keywords: ICM7555, ICM7556, CMOS 555 Timer, Precision Timer IC, Low Power Timer, General Purpose Timer, PWM Generator, Pulse Generator, Oscillator IC, Delay Timer, Monostable Multivibrator, Astable Multivibrator, Frequency Generator, Timing Circuit, CMOS Timer, Analog Timer IC, Low Power Oscillator, Dual Timer IC, Single Timer IC, 555 Compatible Timer Hashtags: #ICM7555 #ICM7556 #CMOS555 #555Timer #TimerIC #PrecisionTimer #PulseGenerator #PWMGenerator #OscillatorIC #FrequencyGenerator #DelayCircuit #Monostable #Astable #CMOS #LowPowerElectronics #AnalogIC #EmbeddedSystems #ElectronicsDesign #CircuitDesign #PCBDesign

Accelerometer, Gyroscope, Magnetometer, 9 Axis Sensor I2C, SPI, UART Output The BNO085 is a high-performance 9-axis absolute orientation sensor system-in-package (SiP) that integrates a 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, and a low-power ARM Cortex-M0+ microcontroller running CEVA/Hillcrest SH-2 sensor fusion firmware. It provides accurate real-time orientation, motion tracking, and activity detection while offloading complex sensor fusion calculations from the host processor. The device is widely used in robotics, AR/VR systems, wearables, drones, IoT devices, and navigation applications. Key Features 9-axis motion sensing with integrated accelerometer, gyroscope, and magnetometer Built-in SH-2 sensor fusion engine for accurate orientation tracking ARM Cortex-M0+ processor for onboard motion processing Outputs quaternion, rotation vector, linear acceleration, gravity vector, angular velocity, and magnetic field data Advanced motion detection including tap, step, shake, and significant motion detection Activity classification and stability detection capabilities Low-latency rotation vectors optimized for AR/VR applications Supports I²C, SPI, and UART communication interfaces Configurable output data rates and timestamps Low-power operation suitable for battery-powered devices Compact 28-pin LGA package (5.2 mm × 3.8 mm) Operating temperature range: -40°C to +85°C Backward compatible with BNO080 designs while adding support for future application-specific libraries Applications Robotics and autonomous systems Virtual Reality (VR) and Augmented Reality (AR) Wearable devices and fitness trackers Drones and UAVs Head-mounted displays (HMDs) Industrial motion tracking IoT and smart devices Navigation and positioning systems #BNO085 #IMU #9AxisSensor #MotionTracking #SensorFusion #OrientationSensor #Robotics #AR #VR #IoT #Wearables #EmbeddedSystems #CEVA #HillcrestLabs #MotionDetection #Quaternion #InertialMeasurementUnit

10 µH Shielded Drum Core, Wirewound Inductor 7.5 A 30mOhm Max Nonstandard # Engineering Specification ## Product Name SRP1038A-100M ## General Description SRP1038A-100M is a shielded surface mount power inductor designed for use in high-efficiency DC-DC conversion and power management applications. The device is intended to support energy storage and current smoothing functions in switching regulator circuits, where stable inductance performance and low power loss are critical. The inductor utilizes a ferrite core construction with a shielded magnetic structure to minimize electromagnetic interference and reduce magnetic flux leakage. This enables improved circuit density and reduced noise coupling in compact electronic assemblies. The design is optimized for use in high current power conversion systems, including buck converters, point-of-load regulators, and distributed power architectures. The component is widely used in industrial, automotive, telecommunications, and embedded systems where reliable energy transfer, thermal stability, and efficient power delivery are required. Its surface mount form factor supports automated PCB assembly and compact system integration while maintaining mechanical robustness under thermal and electrical stress. The design emphasizes low direct current resistance, high current handling capability, and stable inductance behavior under load conditions. It is suitable for applications requiring efficient power conversion with minimal energy loss and stable electromagnetic performance. ## Functional Requirements ### Energy Storage The device shall store energy in a magnetic field during switching operation in power conversion circuits. ### Current Filtering The device shall smooth current ripple in switching regulator applications to maintain stable output conditions. ### Electromagnetic Shielding The device shall reduce electromagnetic interference through a shielded magnetic structure. ### Power Conversion Support The component shall support efficient operation in DC-DC conversion systems. ## Electrical Requirements ### Inductive Performance The device shall provide stable inductance characteristics suitable for power conversion and filtering applications. ### Low Loss Operation The inductor shall minimize resistive and core losses to improve overall system efficiency. ### High Current Capability The device shall support operation under elevated current conditions typical of switching power supplies. ### Thermal Stability The inductor shall maintain performance consistency under thermal loading and temperature variation. ## Mechanical Requirements ### Surface Mount Package The device shall be supplied in a surface mount configuration suitable for automated PCB assembly processes. ### Structural Integrity The component shall withstand mechanical stress during assembly, operation, and thermal cycling. ### PCB Integration The design shall support compact layout integration in multilayer printed circuit board systems. ## Environmental Requirements ### Operating Conditions The device shall operate reliably under conditions typical of industrial and embedded electronic systems. ### Thermal Performance The component shall maintain stable operation under continuous power cycling and heat generation. ### Storage and Handling The device shall retain structural and electrical integrity during storage, transportation, and handling. ## Quality Requirements ### Reliability The inductor shall provide consistent long-term performance under continuous electrical and thermal stress. ### Verification Electrical and thermal characteristics shall be validated through appropriate qualification and testing procedures. ### Compliance The product shall conform to applicable standards for magnetic components used in power electronics applications. ## Documentation Requirements Technical documentation shall include application guidance, layout recommendations for switching power designs, thermal considerations, electrical characteristics, and integration practices for DC-DC converter systems. ## Classification Tags #SRP1038A100M #PowerInductor #ShieldedInductor #SMDInductor #MagneticComponent #EnergyStorageInductor #DCDCConverter #BuckConverter #PowerElectronics #SMPSDesign #ElectromagneticCompatibility #EMIShielding #PCBDesign #ElectricalEngineering #EmbeddedPower #IndustrialElectronics #AutomotiveElectronics #CommonPartsLibrary #ComponentLibrary #EngineeringSpecification #PowerManagement #CircuitDesign #HighCurrentInductor