LEDs

The ESP32-WROOM-32E (16MB) is a highly integrated Wi-Fi + Bluetooth + Bluetooth Low Energy (BLE) module developed by Espressif. It is based on the ESP32-D0WD-V3 chip and features a dual-core processor, rich peripherals, and large flash memory—making it ideal for IoT, embedded systems, and wireless applications. This module is part of the upgraded WROOM-32E series, offering improved RF performance, better stability, and enhanced reliability compared to earlier versions like the 32D. Key Features (16MB Variant) Processor & Memory Dual-core Xtensa® 32-bit LX6 CPU, up to 240 MHz 520 KB SRAM + 448 KB ROM 16 MB SPI Flash (large storage for firmware/data) Optional variants with PSRAM for memory-intensive tasks Connectivity 2.4 GHz Wi-Fi (802.11 b/g/n) Bluetooth v4.2 (BR/EDR + BLE) Integrated PCB antenna (no external antenna needed) Peripherals & Interfaces Up to 26–38 GPIOs (depending on usage) Supports: UART, SPI, I2C, I2S PWM (LED & motor control) ADC, DAC Capacitive touch sensors SD/SDIO/MMC, CAN (TWAI) Electrical & Physical Operating voltage: 3.0V – 3.6V Operating temperature: –40°C to +85°C (industrial range) Compact size: 18 × 25.5 × 3.1 mm Typical Applications Smart home devices (lighting, appliances) IoT sensors and gateways Industrial automation systems Wearables and smart gadgets Audio/voice processing (thanks to dual-core + large flash) #module #ESP32 #16MB

Green 568nm LED Indication - Discrete 2.2V Radial The WP483GDT is a through-hole green light-emitting diode designed for general-purpose visual indication and low-power lighting applications. It emits a visible green wavelength when forward biased and is commonly used in status indicators, signal displays, and basic illumination circuits. The device is built with a durable epoxy lens package that provides mechanical protection and enhances light output visibility. It is suitable for use in a wide range of electronic systems, including consumer electronics, control panels, and embedded designs. Device Overview The component is a standard discrete LED with a two-lead configuration consisting of an anode and a cathode. It operates by converting electrical energy into light through electroluminescence. The emitted color falls within the green spectrum, making it appropriate for applications requiring clear visual signaling without excessive brightness or power consumption. Electrical Characteristics The LED operates under forward bias conditions, with a typical forward voltage in the range expected for green LEDs. It supports low current operation while maintaining consistent luminous output. Reverse voltage tolerance is limited, and proper polarity must be observed to prevent damage. Current-limiting resistors are required in circuit integration to ensure safe operation. Optical Characteristics The device produces a green light output with a defined luminous intensity and viewing angle based on its lens shape and internal structure. The epoxy lens may be diffused or clear, affecting the spread and focus of the emitted light. Brightness is dependent on the forward current applied. Mechanical Characteristics The LED is housed in a standard round through-hole package, compatible with typical PCB mounting. Leads are spaced to fit common board layouts and can be soldered directly. The epoxy body provides insulation and environmental protection while maintaining optical clarity. Thermal Considerations The device is designed for low power dissipation but should be operated within recommended limits to avoid overheating. Adequate spacing and proper current control help maintain thermal stability and prolong device lifespan. Applications The WP483GDT is suitable for indicator lights in electronic devices, status displays in control systems, educational and hobby electronics, and general-purpose signaling applications where green illumination is required. Compliance and Handling The component should be handled using standard ESD precautions. Storage and soldering conditions should follow typical LED handling practices to maintain performance and reliability. #commonpartslibrary #led #green

2.4GHz -98dBm SMD,19.2x18mm RF Transceiver Modules and Modems RoHS The ESP32-WROOM-32UE-N16 is a 2.4 GHz wireless MCU module built around the ESP32 SoC. It combines a dual-core processor, integrated Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 (Classic + BLE), along with rich peripherals. The “UE” variant specifically uses a U.FL / IPEX connector for an external antenna, making it ideal for applications that require better RF performance or flexible antenna placement (e.g., enclosed products or long-range communication). The “N16” indicates 16 MB external flash memory, suitable for large firmware, OTA updates, and data-heavy applications. Processing Dual-core Xtensa LX6 32-bit CPU Clock speed up to 240 MHz Memory 16 MB Flash (N16 variant) ~520 KB SRAM + 448 KB ROM Connectivity Wi-Fi: 802.11 b/g/n (up to 150 Mbps) Bluetooth: v4.2 (BR/EDR + BLE) Frequency: 2.4 GHz band Antenna External antenna via U.FL connector Better range and flexibility vs PCB antenna Interfaces / Peripherals GPIO (≈26 usable pins) UART, SPI, I2C, I2S, SDIO ADC, DAC PWM (LED & motor control) Capacitive touch sensing Security Hardware encryption: AES, SHA, RSA Secure boot & flash encryption support Power Operating voltage: 3.0V – 3.6V (typ. 3.3V) Multiple low-power modes for battery applications Environmental Operating temperature: -40°C to +85°C Physical Surface-mount module (~38 pins / 52 pads depending on reference) Compact and RF-shielded design Typical Applications Smart home devices (IoT) Industrial automation Wireless sensors and data loggers Wearables and consumer electronics Remote monitoring systems #Module #ESP32

WiFi 802.11a/b/g/n, Bluetooth v5.0 Transceiver Module 2.4GHz PCB Trace The ESP32-S3-WROOM-1-N8R2 is a compact, low-power Wi-Fi and Bluetooth® Low Energy (BLE) module developed by Espressif Systems. It is based on the ESP32-S3 system-on-chip (SoC), which integrates a dual-core Xtensa® LX7 processor optimized for high performance and edge AI processing. This module includes 8 MB of external SPI flash memory and 2 MB of PSRAM, enabling efficient handling of memory-intensive applications such as graphical interfaces, buffering, and embedded machine learning workloads. Designed for flexibility and scalability, the module integrates RF components, power management, and a wide range of peripherals into a surface-mount package suitable for IoT, industrial, and consumer electronics applications. Key Features Dual-core Xtensa® LX7 processor operating up to 240 MHz Integrated 2.4 GHz Wi-Fi (802.11 b/g/n) Bluetooth 5 Low Energy support Embedded 8 MB SPI flash memory Integrated 2 MB PSRAM AI acceleration through vector instruction support USB OTG (full-speed) capability Multiple low-power operating modes Built-in hardware security features Extensive peripheral interface support Functional Overview The module consists of several integrated subsystems, including a dual-core processing unit, memory subsystem (flash and PSRAM), RF subsystem for wireless communication, peripheral interface controllers, power management circuitry, and a hardware-based security engine. Electrical Characteristics Operating voltage range: 3.0 V to 3.6 V (typical 3.3 V) Operating temperature range: -40°C to +85°C RF operating frequency: 2.4 GHz Current consumption varies depending on operating mode, ranging from microamp levels in deep sleep to hundreds of milliamps during active transmission Processor and Memory The module features a dual-core Xtensa® LX7 CPU capable of running at frequencies up to 240 MHz. It includes approximately 512 KB of internal SRAM, supplemented by 8 MB of external flash memory and 2 MB of PSRAM for extended data storage and processing. Wireless Connectivity The ESP32-S3-WROOM-1-N8R2 supports Wi-Fi communication compliant with 802.11 b/g/n standards in the 2.4 GHz band. It also supports Bluetooth 5 Low Energy for short-range wireless communication. The module includes an integrated PCB antenna and supports RF output power up to approximately +20 dBm. Peripheral Interfaces The module provides a wide range of interfaces, including general-purpose input/output (GPIO) pins, SPI, I2C, UART, and I2S for audio applications. It also supports PWM for LED control, a 12-bit analog-to-digital converter (ADC), and USB OTG functionality. Pin functions are multiplexed to maximize flexibility. Power Management Power efficiency is achieved through multiple operating modes, including active mode, modem sleep, light sleep, and deep sleep. The module includes an RTC subsystem for low-power timekeeping and supports dynamic frequency scaling to optimize performance and energy consumption. Security Features The module incorporates several hardware-based security mechanisms, including secure boot, flash encryption, and digital signature verification. It also includes a hardware random number generator and cryptographic accelerators supporting AES, SHA, RSA, and ECC algorithms. Mechanical Characteristics The module is designed for surface-mount integration and measures approximately 18 mm by 25.5 mm. It includes an onboard PCB antenna and is suitable for compact embedded designs. Pin Configuration Overview GPIO pins are multiplexed to support various peripheral functions such as analog inputs, communication interfaces, and control signals. Dedicated pins are provided for power supply, module enable, and boot configuration. Typical Applications Internet of Things (IoT) devices Smart home systems Industrial automation and monitoring Edge AI and machine learning applications Wearable electronics Audio and multimedia systems USB-enabled embedded devices Compliance The module is designed to meet Wi-Fi and Bluetooth standards and is compliant with RoHS requirements. Certification such as FCC or CE may apply depending on the specific module variant and deployment. Ordering Information The ESP32-S3-WROOM-1-N8R2 variant includes 8 MB of flash memory and 2 MB of PSRAM. #commonpartslibrary #integratedcircuit #transceiver #wireless #rf

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

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