Bipolar (BJT) Transistor NPN 40V 200 mA 300MHz 300 mW Surface Mount SOT-23-3 (TO-236) The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor designed for switching and amplification applications. It is housed in a compact SOT-23 surface-mount package, making it suitable for high-density PCB designs. This transistor is widely used in low-power signal processing, digital switching, and analog amplification circuits due to its reliable performance and fast switching characteristics. Key Features General-purpose NPN transistor Compact SOT-23 surface-mount package Fast switching speed Low saturation voltage Suitable for low-current and low-power applications High reliability and stability Pb-free, Halogen-free, and RoHS compliant Electrical Characteristics (Typical @ 25°C unless otherwise specified) Collector-Emitter Voltage (VCEO): 40 V Collector-Base Voltage (VCBO): 60 V Emitter-Base Voltage (VEBO): 6 V Collector Current (IC): 200 mA (max) DC Current Gain (hFE): 100 – 300 Collector-Emitter Saturation Voltage (VCE(sat)): 0.2 V (typ) Transition Frequency (fT): ~300 MHz Absolute Maximum Ratings Collector Current (Continuous): 200 mA Power Dissipation: ~225 mW Junction Temperature: +150°C (max) Operating Temperature Range: -55°C to +150°C Storage Temperature Range: -55°C to +150°C Mechanical Characteristics Package Type: SOT-23 (TO-236AB) Mounting Type: Surface Mount Number of Pins: 3 Marking Code: Dependent on lot/manufacturer marking Applications General-purpose switching circuits Signal amplification Digital logic interfacing LED drivers and small load switching Audio and RF signal processing #CommonPartsLibrary #TransistorBJT #MMBT2222

Temperature Sensor Digital, Local -55°C ~ 125°C 12 b TO-92-3 #commonpartslibrary #temperature #sensor #digital

Bipolar (BJT) Transistor NPN 40V 200 mA 300MHz 625 mW Through Hole TO-92-3 The 2N3904TFR is a general-purpose NPN bipolar junction transistor (BJT) designed for low-power amplification and switching applications. It is widely used in signal processing, small-signal amplification, and digital switching circuits. This transistor offers fast switching speed, low saturation voltage, and reliable performance in a compact surface-mount package, making it suitable for consumer electronics, industrial controls, and embedded systems. Manufacturer Various (commonly ON Semiconductor / onsemi, Diodes Inc., Central Semiconductor) Part Number 2N3904TFR Transistor Type NPN Bipolar Junction Transistor (BJT) Configuration Single Package / Case SOT-23 (TO-236AB) Mounting Style Surface Mount (SMD/SMT) Collector-Emitter Voltage (VCEO) 40 V Collector-Base Voltage (VCBO) 60 V Emitter-Base Voltage (VEBO) 6 V Collector Current (IC) 200 mA (max) Power Dissipation (PD) ~200 mW to 350 mW (package dependent) DC Current Gain (hFE) 100 to 300 (typical, varies with operating conditions) Transition Frequency (fT) ~300 MHz Collector-Emitter Saturation Voltage (VCE(sat)) ~0.2 V (typical at IC = 10 mA, IB = 1 mA) Operating Temperature Range -55°C to +150°C Polarity NPN Packaging Tape & Reel (TFR suffix) RoHS Compliance Compliant #commonpartslibrary #transistor #bjt

16 Bit Analog to Digital Converter 2 Input 1 Sigma-Delta 10-VSSOP #commonpartslibrary #integratedcircuit #analog #digital #converter

Humidity, Temperature 0 ~ 100% RH I2C ±2% RH 8 s Surface Mount The SHTC3-TR-2.5KS is a digital humidity and temperature sensor from Sensirion, designed for high accuracy, low power consumption, and compact integration. It utilizes a fully calibrated capacitive humidity sensor and bandgap temperature sensor, providing precise environmental measurements via an I²C interface. The device is optimized for battery-powered and space-constrained applications, featuring ultra-low power consumption and sleep modes, making it ideal for IoT, wearable, and mobile devices. Key Features Relative humidity and temperature sensing in a single package Fully calibrated and linearized digital output I²C interface (up to 1 MHz fast mode) Ultra-low power consumption with sleep mode High accuracy and fast response time Small DFN package for compact designs Factory calibrated, no external calibration required Mechanical Characteristics Package Type: DFN (Dual Flat No-Lead) Package Size: ~2.0 mm × 2.0 mm × 0.75 mm Mounting Type: Surface mount (SMT) Terminals: Bottom pads Electrical Characteristics Supply Voltage (VDD): 1.62 V to 3.6 V Average Supply Current: Measurement: ~170 µA Sleep Mode: ~0.3 µA Interface: I²C (address selectable) Output: Digital (temperature and relative humidity) Sensing Performance Humidity Range: 0 to 100 %RH Humidity Accuracy: ±2 %RH (typical) Temperature Range: -40°C to +125°C Temperature Accuracy: ±0.2°C (typical) Response Time (τ63%): ~8 seconds (humidity) Functional Features Low-power measurement modes (normal and low power) Sleep mode for minimal energy consumption CRC checksum for data integrity Clock stretching support (optional) Environmental Specifications Operating Temperature Range: -40°C to +125°C Storage Temperature Range: -40°C to +125°C Packaging Information Packaging Type: Tape & Reel (TR) Reel Quantity: 2,500 units (2.5KS) Lead-Free / RoHS compliant Typical Applications Wearable devices Smartphones and mobile electronics IoT sensors and nodes Smart home devices (thermostats, air quality monitors) HVAC systems Environmental monitoring #CommonPartsLibrary #Sensor #Transducer #Humidity #Moisture-Sensor

600 Ohms @ 100 MHz 1 Ferrite Bead 0603 (1608 Metric) ferrite bead 600 ohm 0603 ferrite bead 600 ohm 100MHz 0603 ferrite bead 0603 600ohm The BLM18AG601SN1D is a surface-mount ferrite bead designed for suppression of high-frequency noise in electronic circuits. It provides high impedance at high frequencies while maintaining low DC resistance, making it suitable for power lines and signal line filtering. This component is commonly used in portable electronics, communication devices, and general digital circuits to improve EMI performance. ELECTRICAL CHARACTERISTICS Impedance: 600 Ω ±25% @ 100 MHz Rated Current: 500 mA (max) DC Resistance (DCR): 0.5 Ω (typ), 0.8 Ω (max) Insulation Resistance: 10 MΩ min PHYSICAL CHARACTERISTICS Package Size: 0603 (1608 Metric) Length: 1.6 mm Width: 0.8 mm Height: 0.8 mm (typ) Mounting Type: Surface Mount (SMD) ENVIRONMENTAL & OPERATING CONDITIONS Operating Temperature Range: -55°C to +125°C Storage Temperature Range: -55°C to +125°C APPLICATIONS Power supply line noise suppression Signal line EMI filtering Mobile devices and handheld electronics Computers and peripherals Consumer electronics FEATURES High impedance at high frequencies for effective noise suppression Low DC resistance minimizes signal/power loss Compact 0603 package suitable for high-density PCB layouts Reliable multilayer construction Lead-free and RoHS compliant PACKAGING Packaging Type: Tape and Reel Standard Reel Quantity: Typically 4000 pcs/reel #CommonPartLibrary #Filter #FerriteBead

Molex 8 Position Micro SD Card Connector Secure Digital - microSD™ Surface Mount, Right Angle Gold #sdcard #commonpartslibrary #connector

Precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. #commonpartslibrary #integratedcircuit #analog #digital #converter #sensor

Digital Potentiometer 100k Ohm 4 Circuit 129 Taps SPI Interface 20-TSSOP #CommonPartsLibrary #IntegratedCircuit #Data-Acquisition #Digital-Potentiometer #WiperLock™

Seeed Studio XIAO ESP32S3 Module Integration (Camera-Free)