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

Sensor and Detector Interface 5.5V 0.7mA SPI Interface 8-Pin SOIC N Tube #commonpartslibrary #integratedcircuit #sensor

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

Sensor and Detector Interface 5.5V 0.3mA 2-Wire/I2C/Serial Interface 20-Pin VQFN EP Tube #commonpartslibrary #integratedcircuit #thermocouple

MAXIM INTEGRATED PRODUCTS - MAX9924UAUB+T - Specialized Interface, Sensor Interface, Camshaft, Crankshaft & Vehicle Speed VRS Interfaces, 4.5 V #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #Detector-interface #MAX9924

Capacitive Touch Buttons 24-QFN (4x4) #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #Capacitive-Touch #CAP1188

Sensor Interface Cold-Junction-Compensated K-Thermocouple-to-Digital Converter (0 C to +1024 C) #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #Detector-Interface

Variable-Reluctance Sensor Interface with Differential Input and Adaptive Peak Threshold #commonpartslibrary #integratedcircuit #sensor

Capacitive Touch Buttons, Slider, Wheel 52-QFN (6x6) #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #IQ Switch®, ProxSense®

Capacitive Touch Proximity Only 10-WSON (3x3) #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #Capacitive-Touch

The Dissolved Oxygen OEM™ Circuit is a compact and high-performance dissolved oxygen (DO) sensor interface board designed for integration into custom hardware systems. Engineered for developers and OEMs, this board provides a precision analog interface between a dissolved oxygen probe and a microcontroller or data acquisition system #Module #Part

Conditioner, Signal, Voltage to Current, +/- 15 V +/- 5%, 30 mA, +/- 7.5 mA #CommonPartsLibrary #IntegratedCircuit #Interface #Sensor #Detector-interface #1B22

Sensor Interface ICs AD80066KRSZ SSOP-28_L10.2-W5.3-P0.65-LS7.8-BL LCSC Part Number: C386304 JLCPCB Part Class: undefined Manufactured by ADI(亚德诺)

Programmable Sensor Interface (Signal Conditioner), SOIC-16W sensor signal conditioning SOIC*7.5x10.3mm*P1.27mm*

Programmable Automotive Sensor Interface (Signal Conditioner), SSOP-14 sensor signal conditioning SSOP*5.3x6.2mm*P0.65mm*