Interface ICs

50 Ω MMCX/MCX female board-edge RF coaxial connector with a 4.5 mm interface, designed for compact PCB RF connections up to 6 GHz. Through-hole construction with gold-plated contacts provides a reliable interface for wireless communication, RF equipment, GPS, and test/measurement applications. #MMCX #MCX #RF #CoaxialConnector #50Ohm #6GHz #BoardEdge #ThroughHole

Wi-Fi and Bluetooth 5 Module – 2.4 GHz wireless module based on the ESP32-S3 SoC, providing 802.11b/g/n Wi-Fi and Bluetooth 5 LE connectivity. The Espressif ESP32-S3-WROOM-1-N4 integrates a dual-core 32-bit Xtensa LX7 processor up to 240 MHz, 4 MB Quad-SPI Flash, up to 36 GPIOs, and interfaces including I²C, I²S, SPI, UART, PWM, ADC, and USB. It operates from 3.0–3.6 V and uses an integrated PCB antenna in an 18.0 × 25.5 × 3.1 mm module. #Espressif #ESP32S3 #ESP32S3WROOM1N4 #WiFi #Bluetooth5 #WirelessModule #IoT #Microcontroller #EmbeddedSystems #PCBDesign

Polymeric PTC Resettable Fuse 6V 500 mA Ih Surface Mount 0603 (1608 Metric), Concave polyfuse 500mA 0603 The 0603L050YR is a surface-mount resettable fuse based on polymeric positive temperature coefficient technology, designed to provide overcurrent protection in compact electronic circuits. Under normal operating conditions, the device exhibits low resistance and allows current to pass with minimal power loss. When exposed to an overcurrent condition, the device transitions to a high-resistance state, effectively limiting the current and protecting downstream components. Once the fault condition is removed and power is cycled or the device cools, the fuse automatically resets to its original low-resistance state. This component is optimized for space-constrained applications requiring reliable, resettable protection, such as portable electronics, battery-powered systems, and low-voltage signal lines. Its small form factor enables integration into dense PCB layouts while maintaining compliance with industry safety standards for overcurrent protection. Package and Mounting: Surface-mount device in standard 0603 footprint, compatible with automated assembly processes including reflow soldering. Electrical Characteristics: The device is designed to maintain normal operation at a defined hold current level and transition to a protective state when the current exceeds its trip threshold. It operates within low-voltage circuits and provides fast response to fault conditions while minimizing nuisance tripping under typical load variations. Functional Behavior: The fuse operates by increasing resistance sharply in response to thermal energy generated by excess current. This behavior reduces current flow and limits fault energy. After removal of the overcurrent condition, the device gradually returns to its conductive state, enabling repeated use without replacement. Applications: Suitable for use in power lines, battery packs, USB interfaces, consumer electronics, and other low-voltage systems where resettable overcurrent protection is required. Compliance and Reliability: Designed to meet relevant safety and environmental standards for electronic components, ensuring stable performance across specified operating conditions and long-term reliability in field applications. #commonpartslibrary #fuse #Circuit-Protection #PTC #ptc #polymeric

USB Controller USB 2.0 I2C Interface 24-QFN (4x4) The STUSB4500QTR is a standalone USB Type-C Power Delivery (PD) controller from STMicroelectronics designed for power sink applications (devices that receive power, like chargers, IoT devices, or battery-powered systems). It enables automatic negotiation of USB Power Delivery contracts (up to 100 W: 20 V / 5 A) without requiring an external microcontroller, thanks to its built-in auto-run algorithm. Power profiles (PDOs) can be pre-configured and stored in internal non-volatile memory, simplifying system design and reducing component count. The device is optimized for modern USB-C designs, offering robust protection, high-voltage tolerance, and support for operation even from a dead battery state. Key Features Power Delivery & Control Standalone USB Type-C™ and USB PD sink controller Supports up to 100 W (20 V, 5 A) power negotiation Auto-run mode (no MCU required) for PD negotiation Up to 3 configurable sink PDO profiles stored in NVM Power Management Dead battery mode support (can start with no battery power) Dual power supply inputs: V_SYS: 3.0 V – 5.5 V V_DD: 4.1 V – 22 V Integrated VBUS monitoring and control Integrated Functions Built-in VBUS switch gate drivers (PMOS) Internal/external VBUS discharge paths I²C interface for configuration and monitoring Protection & Reliability Short-to-VBUS protection on CC pins (up to 22 V) High-voltage tolerance: Up to 28 V on VBUS pins ESD protection: 3 kV HBM / 1.5 kV CDM Physical & Environmental Package: QFN-24 (4×4 mm) Operating temperature: –40°C to +105°C Industrial-grade reliability Compliance & Compatibility Certified for: USB Type-C Rev 1.2 USB PD Rev 2.0 Interoperable with USB PD 3.0 #commonpartslibrary #integratedcircuit #usbcontroller

Connector Header Through Hole 5 position 0.100" (2.54mm) SWD header 1x5 2.54mm PinHeader 1x05 2.54mm horizontal The TSW-105-07-G-S is a high-reliability, through-hole, single-row pin header from Samtec’s TSW series. It is designed for board-to-board or wire-to-board interconnections in a wide range of electronic applications. Featuring a standard 2.54 mm pitch and gold-plated contacts, this connector ensures reliable electrical performance, durability, and compatibility with industry-standard mating components. Mechanical Characteristics Connector Type: Pin Header Mounting Type: Through-Hole Number of Positions: 5 Number of Rows: Single Row Pitch: 2.54 mm Orientation: Vertical Termination Style: Solder Contact Shape: Square Post Material and Plating Contact Material: Phosphor Bronze Contact Plating: Gold over Nickel Housing Material: Black Thermoplastic (UL94 V-0 rated) Electrical Characteristics Current Rating: Typically up to 3 A per contact Voltage Rating: Typically up to 500 VAC Contact Resistance: Low contact resistance for reliable signal transmission Insulation Resistance: High insulation resistance Environmental Characteristics Operating Temperature Range: -55°C to +125°C Flammability Rating: UL94 V-0 Applications Board-to-board connections Wire-to-board interfaces Prototyping and development systems Industrial and consumer electronics Compliance and Standards RoHS Compliant Lead-Free #CommonPartsLibrary #Connector #Header #TSW

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

2-Position Right-Angle PCB Terminal Block Header – Single-row pluggable terminal block header designed for industrial automation, power supplies, control systems, instrumentation, HVAC equipment, embedded electronics, and general-purpose PCB power connections. The KANGNEX WJ2EDGRC-5.08-02P-14-00A (LCSC C3697) features 2 positions on a 5.08 mm pitch with a right-angle through-hole PCB mount, allowing convenient horizontal wire entry in compact designs. It is rated for 10 A and 300 V, making it suitable for low- to medium-power industrial and embedded applications. The connector utilizes a closed board-side socket/header design with a snap-on pluggable mating interface, enabling easy field wiring and maintenance. Constructed with a green insulated housing, it operates over a −40°C to +105°C temperature range and is intended for reliable board-to-wire interconnections in industrial environments. #KANGNEX #WJ2EDGRC50802P1400A #C3697 #TerminalBlock #PluggableTerminalBlock #PCBHeader #WireToBoard #508mmPitch #RightAngleConnector #IndustrialElectronics #PowerSupply #EmbeddedSystems

Digital humidity and temperature sensor IC with I²C interface, optimized for low-power battery-operated and compact consumer/electronics applications. Measures 0–100 %RH and −40 to +125 °C, with typical accuracy of ±2 %RH and ±0.2 °C. Operates from 1.62–3.6 V and features ultra-low power consumption, including sleep current around 0.3 µA. Supplied in a compact 2 × 2 × 0.75 mm DFN package. #HumiditySensor #TemperatureSensor #I2C #LowPower #Sensirion

Tactile Switch SPST-NO Top Actuated Surface Mount The B3FS-1002P is a compact, surface-mount tactile switch designed for low-profile input applications. It provides a momentary contact mechanism with a distinct tactile feedback, making it suitable for user interface controls in consumer electronics, industrial devices, and compact embedded systems. The switch features a sealed construction for improved reliability and is optimized for automated PCB assembly processes. Mechanical Characteristics Mounting Type: Surface Mount (SMD) Actuator Style: Top push Actuator Height: Low profile Outline: Rectangular compact body Terminal Type: Gull-wing terminals Sealing: Dust-resistant (sealed construction) Electrical Characteristics Switch Type: Single Pole Single Throw (SPST) Contact Configuration: Normally Open (NO) Rated Voltage: Low voltage DC applications Rated Current: Suitable for signal-level switching Contact Resistance: Low initial contact resistance Insulation Resistance: High insulation resistance between terminals Operating Characteristics Operating Force: Standard tactile force (manufacturer-defined variant) Travel Distance: Short stroke tactile action Operating Life: High durability for repeated actuation cycles Bounce Time: Minimal contact bounce for reliable switching Environmental Characteristics Operating Temperature Range: Wide operating range suitable for consumer and industrial use Storage Temperature Range: Standard electronic component storage conditions Humidity Resistance: Designed to withstand typical ambient humidity conditions Material & Construction Actuator Material: High-strength polymer Housing Material: Heat-resistant plastic Contact Material: Metal alloy with surface plating for durability Terminal Finish: Solderable finish compatible with reflow soldering Packaging Information Packaging Type: Tape and reel Assembly Compatibility: Fully compatible with automated pick-and-place and reflow processes Applications Consumer electronics (keypads, remote controls) Industrial control panels Portable devices Embedded system user interfaces Wearable and compact electronics #commonpartslibrary #switch #tactile

PCB spring terminal block for wire-to-board connections, featuring a 2-position, 3.5 mm pitch interface with a 45° wire entry and push-in spring connection. It is rated for up to 10 A and 320 V (IEC), accepts 0.2–1.5 mm² (22–16 AWG) conductors, supports PCB through-hole soldering, and operates over a −40°C to +105°C temperature range. #commonpartslibrary #connector #terminalblock #tht