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

555 Type, Timer/Oscillator (Single) IC 100kHz 8-SOIC #commonpartslibrary #integratedcircuit #clock #timing #oscillator

Circuit Board Hardware - PCB TEST POINT, PC Test Point, Miniature Phosphor Bronze Silver Plating Surface Mount Mounting Type #CommonPartsLibrary #Test-point

Linear Voltage Regulator IC Positive Fixed 1 Output 600mA SOT-25 3.3V LDO AP2112K-3.3 The AP2112K-3.3TRG1 is a low dropout (LDO) linear voltage regulator designed to provide a stable 3.3V output from a higher input voltage. It is optimized for low noise, high power supply rejection ratio (PSRR), and low quiescent current, making it suitable for battery-powered and noise-sensitive applications. The device features current limiting and thermal shutdown protection, ensuring reliable operation under fault conditions. It is commonly used in portable electronics, RF modules, microcontroller power supplies, and other low-power systems. Key Features Fixed output voltage: 3.3V Output current: up to 600 mA Low dropout voltage: ~250 mV at 300 mA load High PSRR: up to 70 dB at 1 kHz Low quiescent current: typically 55 µA Stable with low ESR ceramic capacitors Built-in overcurrent protection Thermal shutdown protection Fast transient response Absolute Maximum Ratings Input Voltage (VIN): up to 6.5 V Output Current: Internally limited Operating Junction Temperature: -40°C to +125°C Storage Temperature: -65°C to +150°C Electrical Characteristics (Typical values unless otherwise specified) Output Voltage Accuracy: ±2% Dropout Voltage: 250 mV @ 300 mA 400 mV @ 600 mA Line Regulation: 0.05%/V Load Regulation: 0.2% Quiescent Current: 55 µA Shutdown Current: <1 µA PSRR: 70 dB @ 1 kHz 45 dB @ 10 kHz Pin Configuration (SOT-23-5 / SC-70-5) VIN – Input voltage GND – Ground EN – Enable (active high) NC – No connection VOUT – Regulated output (3.3V) Package Information Package Type: SOT-23-5 (TRG1 suffix indicates tape & reel) Mounting: Surface mount Small footprint suitable for compact PCB layouts Typical Applications Battery-powered devices Wireless modules (Wi-Fi, Bluetooth, RF) Microcontroller and FPGA power supplies Portable consumer electronics Sensor and analog circuits requiring low noise Compliance & Reliability RoHS compliant Lead-free package Designed for high reliability and long operational life #CommonPartsLibrary #IntegratedCircuit #PowerManagement #LinearRegulator #VoltageRegulator

Red 631nm LED Indication - Discrete 2V 0603 (1608 Metric) The LTST-C190KRKT is a surface-mount red LED designed for compact electronic applications requiring reliable visual indication. It is housed in a standard chip LED package, making it suitable for automated assembly processes. This device offers high luminous intensity with low power consumption, ideal for status indicators, backlighting, and display applications. Key Features High brightness red LED Compact surface-mount package (0603 / 1608 metric) Low forward voltage and low power consumption Wide viewing angle for uniform illumination Compatible with automated placement equipment RoHS compliant and lead-free Electrical Characteristics (Typical @ 25°C) Forward Voltage (Vf): 2.0 V (typ), 2.4 V (max) Forward Current (If): 20 mA (recommended) Luminous Intensity: ~100–180 mcd Wavelength (Peak): ~631 nm (red) Optical Characteristics Color: Red Viewing Angle: 120° (typ) Absolute Maximum Ratings Forward Current: 30 mA (continuous) Peak Forward Current: 100 mA (pulse) Power Dissipation: ~75 mW Operating Temperature Range: -40°C to +85°C Storage Temperature Range: -40°C to +100°C Mechanical Characteristics Package Type: SMD Chip LED Package Size: 0603 (1.6 mm × 0.8 mm) Mounting Type: Surface Mount Lens Type: Clear Applications Status indicators in electronic devices Backlighting for displays and keypads Consumer electronics Industrial control panels Portable and battery-powered devices #commonpartslibrary #optoelectronic #led #red

Micro USB Socket - Single Type B #microUSB #CommonPartsLibrary #Connector

Also known as LDR, light dependent resistor, a special type of variable resistor whose resistance depends on the intensity of light falling on it.

PC Test Point, Compact Phosphor Bronze Silver Plating Surface Mount Mounting Type Generic Test Point #commonpartslibrary #testpoint #SMD

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

Natural PC Test Point Brass Tin Plating Surface Mount Mounting Type #test point pad smd #3.25x163

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

Flip Flop 2 Element JK Type 1 Bit Negative Edge 16-DIP (0.300", 7.62mm) #CommonPartsLibrary #IntegratedCircuit #Logic #Flip-Flop #74LS112

USB-C (USB TYPE-C) USB 2.0 Receptacle Connector 24 (16+8 Dummy) Position Surface Mount, Right Angle; Through Hole USB Type-C receptacle 16 pin USB2.0 The USB4215-03-A is a USB Type-C receptacle connector designed for USB 2.0 applications. It features a 16-pin configuration supporting reversible plug orientation with standard USB 2.0 differential data lines and configuration channel (CC) pins. The connector is intended for surface-mount PCB assembly with through-hole shell stakes for enhanced mechanical strength. It is widely used in compact embedded systems for power delivery, charging interfaces, and basic data communication. Key Features USB Type-C receptacle (USB 2.0 compliant) 16 functional pins (no SuperSpeed support) Reversible plug orientation Surface-mount contacts with through-hole shell tabs Compact, low-profile design High insertion cycle durability Suitable for automated assembly Electrical Characteristics Rated Current: VBUS: up to 5.0 A (depending on PCB design and cable) Signal pins: 0.25 A max Rated Voltage: 20 V DC max Contact Resistance: ≤ 40 mΩ Insulation Resistance: ≥ 100 MΩ Dielectric Withstanding Voltage: 100 V AC Mechanical Characteristics Mounting Type: Surface Mount (SMT) with Through-Hole Shield Tabs Number of Positions: 16 Mating Cycles: 10,000 cycles (typical) Insertion Force: 5–20 N Extraction Force: 8–20 N Material Specifications Contacts: Copper Alloy Contact Plating: Gold over Nickel Housing: High-temperature thermoplastic (UL94V-0) Shell: Stainless Steel Environmental Characteristics Operating Temperature Range: -25°C to +85°C Storage Temperature Range: -40°C to +85°C RoHS Compliant: Yes Halogen Free: Yes Pin Configuration (USB 2.0 Type-C) VBUS (Power) GND (Ground) D+ / D− (USB 2.0 differential pair) CC1 / CC2 (Configuration channel) SBU pins (optional/unused in USB 2.0 designs) Applications USB power input (5 V / USB-C PD trigger designs) Embedded systems and development boards Consumer electronics Charging interfaces Low-speed USB communication devices Packaging Tape & Reel for automated pick-and-place assembly Compliance & Standards USB Type-C Specification (USB 2.0 interface) RoHS / REACH compliant UL recognized materials #CommonPartsLibrary #Connector #USB-C

2 Position Wire to Board Terminal Block Horizontal with Board 0.150" (3.81mm) Through Hole ## Engineering Specification ## General Description The **1727010** is a Phoenix Contact **MKDS series PCB terminal block** designed for secure wire-to-board electrical connection in printed circuit board assemblies. It provides a compact screw-clamp termination interface for connecting external conductors to PCB circuitry. The component is suitable for industrial electronics, automation equipment, control modules, power interfaces, instrumentation, and general electronic assemblies requiring reliable field wiring termination. ## Device Identification Manufacturer Part Number: **1727010** Manufacturer: **Phoenix Contact** Product Name: **MKDS 1/ 2-3,81** Product Series: **MKDS** Product Line: **COMBICON Terminals** Device Category: **Connector and Interconnect Component** Device Type: **PCB Terminal Block** Connection Type: **Wire-to-Board Terminal Block** Termination Method: **Screw Connection with Tension Sleeve** Mounting Type: **Through-Hole PCB Mount** ## Functional Description The device functions as a fixed PCB terminal block that allows external wires to connect directly to the printed circuit board. The screw-clamp mechanism provides both mechanical conductor retention and electrical continuity between the field wiring and PCB circuit. This makes the component suitable for applications where wiring must be secure, serviceable, and accessible during installation or maintenance. ## Mechanical Description The terminal block uses a compact housing with side-entry conductor access and through-hole solder pins for stable PCB attachment. Its construction supports organized wire routing and practical access for conductor insertion and screw tightening. The design is suitable for compact board layouts where reliable field wiring connection is required. ## Electrical Description The component is intended for signal and low-voltage power connection applications within the manufacturer’s specified electrical ratings. It provides stable electrical contact when used with compatible conductor sizes, correct wire preparation, and proper screw tightening torque. ## Material and Contact Description The terminal block uses an insulating housing with internal conductive contact elements that transfer current from the inserted conductor to the soldered PCB pins. The screw connection with tension sleeve helps maintain reliable contact pressure and secure conductor retention during normal operating conditions. ## Mounting and Assembly Description The **1727010** is intended for through-hole solder mounting on a printed circuit board. The PCB layout should follow the manufacturer’s recommended hole size, pad pattern, spacing, and soldering guidance. The component should be positioned to allow safe wire insertion, screwdriver access, and adequate clearance from nearby components or enclosure walls. ## Application Suitability The device is suitable for industrial control boards, automation modules, power supply interfaces, relay boards, instrumentation equipment, sensor wiring interfaces, building control systems, communication hardware, and other electronic products requiring secure PCB wire termination. ## Design Considerations The design should account for conductor size compatibility, current requirement, voltage rating, tightening torque, creepage and clearance spacing, solder joint strength, wire routing, and service access. The terminal block should not be used beyond the manufacturer’s specified electrical, mechanical, or environmental limits. ## Hashtags #commonpartslibrary #terminalblock #pcbterminalblock #phoenixcontact #mkds #combicon #wiretoboard #screwterminal #fixedterminalblock #throughholecomponent #soldermount #connector #interconnect #fieldwiring #industrialelectronics #automationequipment #controlsystems #powerinterface #pcbdesign #hardwaredesign #electronicscomponents #electronicparts #engineeringparts #componentlibrary #electronicsengineering

555 Type, Timer/Oscillator (Single) IC 3MHz 8-PDIP #Timer #commonpartslibrary