The NE555 devices are precision timing circuits capable of producing accurate time delays or oscillation. In time-delay or monostable operating modes, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle are controlled independently with two external resistors and a single external capacitor. Each timer has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage pin (CONT). When the trigger input (TRIG) is less than the trigger level, the flip-flop is set and the output goes high. If TRIG is greater than the trigger level and the threshold input (THRES) is greater than the threshold level, the flip-flop is reset and the output is low. The reset input (RESET) overrides all other inputs and is used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a lowimpedance path is provided between the discharge pin (DISCH) and the ground pin (GND). Tie all unused inputs to an appropriate logic level to prevent false triggering. The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5V supply, output levels are compatible with TTL inputs. Features - Timing from microseconds to hours - Astable or monostable operation - Adjustable duty cycle - TTL-compatible output can sink or source up to 200mA - On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. Applications - Pulse-shaping circuits - Missing-pulse detectors - Pulse-width modulators - Pulse-position modulators - Sequential timers - Pulse generators -F requency dividers - Industrial controls

17V Clamp 5A (8/20µs) Ipp Tvs Diode Surface Mount SOT-23-6 USBLC6-4 low-capacitance ESD/TVS protection diode array, 4 data-line protection, 17V clamping voltage, 5A peak pulse current (8/20µs), 3pF typical capacitance, protects VBUS, USB 2.0 high-speed compatible, IEC 61000-4-2 level 4 ESD protection, SOT-23-6 surface mount package.

Green LED Indication - Discrete 2.2V 0603 (1608 Metric) The SML-LX0603GW-TR is a surface-mount white LED in a compact 0603 (1608 metric) package, designed for indicator and backlighting applications. It offers high brightness with low power consumption and wide viewing angle, making it suitable for portable and space-constrained electronic devices. The device is optimized for automated assembly and is supplied in tape-and-reel packaging. Key Features White LED (cool white emission) Compact 0603 (1.6 mm × 0.8 mm) SMD package High luminous intensity with low forward current Wide viewing angle (~120° typical) Low power consumption Compatible with reflow soldering Tape & reel packaging for automated assembly Optical Characteristics (Typical values) Emission Color: White Luminous Intensity: ~100 to 300 mcd @ 20 mA Color Temperature: ~6000K to 8000K Viewing Angle: 120° Electrical Characteristics (Typical values unless otherwise specified) Forward Voltage (VF): Typ: 3.0 V Max: 3.4 V @ 20 mA Forward Current (IF): 20 mA (continuous) Reverse Voltage (VR): 5 V Power Dissipation: ~75 mW Absolute Maximum Ratings Forward Current: 25 mA (continuous) Peak Forward Current: 100 mA (pulse, short duration) Operating Temperature: -40°C to +85°C Storage Temperature: -40°C to +100°C Mechanical Characteristics Package Type: 0603 (1608 metric) Dimensions: ~1.6 mm × 0.8 mm × 0.8 mm Mounting Type: Surface mount (SMT) Polarity: Cathode marking on package Material Specifications Lens: Epoxy resin (diffused) LED Chip: InGaN (Indium Gallium Nitride) Lead Frame: Copper alloy with silver plating Packaging Information Packaging Type: Tape & Reel (TR) Reel Quantity: Typically 3,000–5,000 pcs per reel RoHS Compliant: Yes Lead-Free: Yes Typical Applications Status indicators Backlighting (LCD, keypad, buttons) Consumer electronics Portable devices Automotive interior lighting (low-power) #commonpartslibrary #optoelectronic #led #SML-LX0603

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

100 Ohms ±5% 5W Through Hole Resistor Axial Flame Retardant Coating, Pulse Withstanding, Safety Wirewound #CommonPartsLibrary #Resistor #THT

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

100 mOhms ±1% 2W Chip Resistor 2512 (6432 Metric) Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding Thick Film #commonpartslibrary #resistor #2512

22k Ohms ±5% 0.25W, 1/4W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film #CommonPartsLibrary #Resistor #RCS e3

The ESP32-DEVKITC-VE evaluation kit from Espressif Systems is a high-performance development platform for RF, RFID, and wireless applications. It features the ESP32-WROVER-E with embedded Xtensa dual-core 32-bit LX6 microprocessor running up to 240 MHz, with 8MB Flash and 8MB PSRAM for efficient data processing. This board supports Wi-Fi 802.11 b/g/n and Bluetooth® Smart Ready 4.x (BLE) connectivity at 2.4GHz, offering wireless communication options. With 448KB ROM, 520KB SRAM, and 16KB SRAM in RTC, it provides ample memory for complex applications. It includes up to 24 GPIOs, SD card, UART, SPI, SDIO, I2C, LED and motor PWM, I2S, IR, pulse counter, capacitive touch sensor, ADC, DAC, and TWAI® (compatible with ISO 11898-1/CAN 2.0) #commonpartslibrary #ESP32-WROVER-E #evaluationboard

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

33V (Typ) Clamp 2.7A (8/20µs) Ipp Tvs Diode Surface Mount 2-X1SON (1x0.6) The ESD601-Q1 is a bidirectional ESD protection diode. The ESD601-Q1 is offered in the industry standard 0402 (DPY) package, and offers an IEC 61000-4-2 protection level of 15kV. The device can clamp 8/20μs surges with peak pulse currents up to 2.7A in accordance with the IEC 61000-4-5 standard. The low capacitance and low leakage current provide protection against transient events in a variety of systems and applications. This protection is key for many applications, such as smaller form factors and faster data speeds, which are becoming more popular over time. Features • IEC 61000-4-2 ESD Protection: – ±15kV contact discharge – ±15kV air gap discharge • ISO 10605 (330pF, 330Ω) ESD Protection: – ±12kV contact discharge – ±15kV air-gap discharge • IEC 61000-4-5 surge protection: – 2.7A (8/20µs) • I/O capacitance: 0.3pF (typical) • Ultra low leakage current: 1nA (typical) • Low dynamic resistance 0.9Ω (typical) • Industry standard 0402 package 2 Applications • Automotive Antenna ESD Protection • RF Signal ESD Protection • Near Field Communications (NFC) • Automotive SerDes w/Power over Coax • USB Type-C (short-to-Vbus tolerant) #CommonPartsLibrary #Diode #TVS

555 Type, Timer/Oscillator (Single) IC 2.1MHz 8-SOIC The TLC555IDR is a low-power CMOS timer device designed as a functional replacement for the standard bipolar 555 timer while providing significantly reduced supply current and improved operating efficiency. The device supports both astable and monostable operating modes and is commonly used for timing generation, pulse shaping, oscillation, PWM generation, delay circuits, and frequency generation applications. The CMOS architecture enables low power consumption, rail-to-rail output capability, and stable timing performance over a wide operating voltage range. The device is suitable for battery-powered systems, portable electronics, industrial controls, instrumentation, consumer products, and embedded electronic designs. The TLC555IDR is supplied in a compact SOIC surface-mount package intended for automated PCB assembly and space-constrained applications. Electrical Characteristics CMOS low-power timer architecture Functional equivalent to standard 555 timer devices Wide operating supply voltage range Low quiescent supply current High input impedance Rail-to-rail output swing capability Stable threshold and trigger levels Compatible with TTL and CMOS logic levels Capable of astable and monostable operation Adjustable duty cycle and frequency operation High output drive capability for direct interfacing Low noise and improved switching performance compared to bipolar 555 timers Functional Features Precision timing generation Oscillator and clock generation Pulse-width modulation support One-shot pulse generation Delay timer implementation Missing pulse detection Frequency divider implementation Sequential timing control LED flashing and tone generation PWM motor and power control applications Package Information Surface-mount SOIC package Standard tape-and-reel packaging format Compact footprint for automated assembly RoHS compliant device construction Environmental and Operating Conditions Industrial operating temperature range ESD protection handling required Suitable for commercial and industrial embedded systems Designed for low-power electronic applications Typical Applications Timer circuits Pulse generators Oscillators PWM controllers LED flashers Alarm and tone generators Frequency generators Power management timing Embedded control systems Portable battery-powered electronics #commonpartslibrary #integratedcircuit #timer #oscillator

ARM® Cortex®-M4 series Microcontroller IC 32-Bit Single-Core 168MHz 1MB (1M x 8) FLASH 64-LQFP (10x10) Arm® Cortex®-M4 32b MCU+FPU, 210DMIPS, up to 1MB flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces, and camera Includes ST state-of-the-art patented technology • Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait state execution from flash memory, frequency up to 168 MHz, memory protection unit, 210 DMIPS/ 1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions • Memories – Up to 1 Mbyte of flash memory – Up to 192+4 Kbytes of SRAM including 64- Kbyte of CCM (core coupled memory) data RAM – 512 bytes of OTP memory – Flexible static memory controller supporting CompactFlash™, SRAM, PSRAM, NOR and NAND memories • LCD parallel interface, 8080/6800 modes • Clock, reset, and supply management – 1.8 V to 3.6 V application supply and I/Os – POR, PDR, PVD and BOR – 4-to-26 MHz crystal oscillator – Internal 16 MHz factory-trimmed RC (1% accuracy) – 32 kHz oscillator for RTC with calibration – Internal 32 kHz RC with calibration • Low-power operation – Sleep, Stop, and Standby modes –VBAT supply for RTC, 20×32-bit backup registers + optional 4 KB backup SRAM • 3×12-bit, 2.4 MSPS A/D converters: up to 24 channels and 7.2 MSPS in triple interleaved mode • 2×12-bit D/A converters • General-purpose DMA: 16-stream DMA controller with FIFOs and burst support • Up to 17 timers: up to twelve 16-bit and two 32- bit timers up to 168 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input • Debug mode – Serial wire debug (SWD) & JTAG interfaces – Cortex-M4 Embedded Trace Macrocell™ • Up to 140 I/O ports with interrupt capability – Up to 136 fast I/Os up to 84 MHz – Up to 138 5 V-tolerant I/Os • Up to 15 communication interfaces – Up to 3 × I2C interfaces (SMBus/PMBus) – Up to 4 USARTs/2 UARTs (10.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control) – Up to 3 SPIs (42 Mbits/s), 2 with muxed full-duplex I2S to achieve audio class accuracy via internal audio PLL or external clock – 2 × CAN interfaces (2.0B Active) – SDIO interface • Advanced connectivity – USB 2.0 full-speed device/host/OTG controller with on-chip PHY – USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI – 10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII #commonpartslibrary #integratedcircuit #microcontroller

45.3 Ohms ±1% 0.5W, 1/2W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film #CommonPartLibrary #Resistor #ChipResisitor

13V Clamp 2.5A (8/20µs) Ipp Tvs Diode Surface Mount 5-TSSOP The PESD5V0L4UG,115 is a low-capacitance, unidirectional quad-channel Electrostatic Discharge (ESD) protection diode array from Nexperia. It is designed to protect up to four high-speed signal or data lines from ESD events and other transient voltage spikes while maintaining excellent signal integrity due to its low junction capacitance. Packaged in a compact SOT-353 (SC-88A/5-TSSOP) surface-mount package, it is well suited for space-constrained electronic designs, including communication equipment, portable devices, computers, and consumer electronics. Key Features Quad-channel unidirectional ESD protection for up to 4 signal lines 5 V reverse standoff voltage (VRWM) suitable for 5 V interfaces Low junction capacitance (~16 pF typ.) to minimize signal distortion Low clamping voltage (13 V max.) for effective transient suppression Peak pulse power of 30 W IEC 61000-4-2 Level 4 ESD protection (up to ±20 kV) Ultra-low leakage current (typically 5 nA) Compact SOT-353 (SC-88A) surface-mount package Qualified to AEC-Q100 for automotive applications Ideal for protecting USB, communication interfaces, SIM card lines, audio/video ports, and other sensitive I/O circuits. #PESD5V0L4UG115 #Nexperia #ESDProtection #TVSDiode #TransientProtection #CircuitProtection #QuadChannel #LowCapacitance #AutomotiveGrade #SOT353 #SignalIntegrity #ElectronicsDesign