LEDs

Battery Multi-Function Controller IC Lithium Ion/Polymer 32-VFQFPN (5x5) L9961 is part of a complete battery pack monitoring, balancing, and protecting system for Li-Ion and Li-Polymer cells in 3, 4 or 5 series configurations. The L9961 uses a high precision ADC to provide cell voltage, stack voltage and temperature conversion via external NTC. Voltage monitoring functions are cyclically performed with a programmable loop time. Stack current is also monitored via a high accuracy CSA, continuously running and performing also Coulomb counting. Cell balancing is available and can be simultaneously activated on all cells. IC configuration and information exchange for SOC/SOH estimation are performed via I2C peripheral. The IC also integrates a dual pre-driver programmable in both HS/LS configurations for driving pack relays. L9961 also implements battery pack fuse protection to prevent fire and explosion hazards. A 3.3 V regulator with a high current capability is available for supplying pack controller and other external circuitry in both standby and normal operation modes. The IC protects the battery pack against over/under voltage conditions and monitors for over/ under temperature. It also features protection against overcurrent (both directions) and short-circuit in discharge events. Safety-relevant configurations can be stored in the internal NVM to avoid re-programming the device at each wake-up. Features • 2 μA shipment - DEEP SLEEP mode current and 5 μA standby consumption (with VREG LDO active) standby consumption (with VREG LDO active) • Integrated 3.3 V VREG LDO for supplying MCU and LEDs • Measures cell voltage (3 to 5 cells), with over/undervoltage detection and balance undervoltage protection • 12-bit voltage measurement with maximum error of ±15 mV in the [1.5 – 4.5] V range, for -40 °C < TJ < 105 °C • Measures stack voltage, with over/under voltage detection and plausibility check vs. sum of cells • Measures pack temperature via NTC, with over/undertemperature detection • Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40 °C < TJ < 105 °C • Measures battery current, with Coulomb counting, overcurrent (both directions) and short-circuit in discharge protection. • 16-bit signed current measurement with 0.1% full scale error at room temperature • I 2C peripheral for device programming and data transfers over I2C bus • Cell balancing supporting up to 70 mA per cell • Dual configurable HS/LS predriver for pack relay management • Pack fuse management • Embedded NVM for configuration parameters storage • High hotplug robustness Applications • Cordless power tools • Backup energy storage systems and UPS • Light electric vehicles (e-bikes, scooters, etc.) • Portable and semi-portable equipment • Medical equipment #L9961TR #BatteryManagement #BMS #LiIonBattery #LiPoBattery #STMicroelectronics #BatteryProtection #CellBalancing #CoulombCounting #PowerManagement #EmbeddedSystems #EnergyStorage #EBike #PowerTools #ElectronicsDesign

OPSCO SK6812MINI RGBW is an intelligent addressable RGBW LED with an integrated control IC inside a compact 3.7 mm × 3.7 mm surface-mount package. It combines red, green, blue, and dedicated white LEDs with a built-in constant-current driver, allowing individual pixel control through a single-wire serial data interface. Each LED contains an internal data latch, PWM controller, signal reshaping circuit, and cascade output, enabling long chains of individually addressable LEDs without additional external components. Compatible with SK6812 and similar NeoPixel-style protocols, it is widely used in LED displays, decorative lighting, wearable electronics, smart home devices, gaming peripherals, indicators, keyboards, and embedded lighting applications. Features include serial data input/output (DIN/DOUT), integrated PWM dimming, high color consistency, and easy daisy-chain connectivity. Search Keywords: SK6812MINI, SK6812 MINI, RGBW LED, addressable RGBW LED, intelligent LED, NeoPixel compatible LED, smart RGB LED, serial controlled LED, individually addressable LED, DIN DOUT LED, programmable LED, LED pixel, embedded lighting LED, digital RGBW LED, SMD RGBW LED, LED strip pixel, SK6812 LED driver Hashtags: #SK6812MINI #SK6812 #RGBW #AddressableLED #SmartLED #NeoPixel #DigitalLED #LEDPixel #EmbeddedLighting #LEDDisplay #Arduino #ESP32 #IoT #WearableElectronics #PCBDesign #LightingControl #SMDLED #ElectronicComponents #LEDDriver #RGBLEDProgrammable LED; RGBW; SMD; 3535,PLCC4; 3.75.5VDC; 3800-4200K

Red, Green, Blue (RGB) 624nm Red, 525nm Green, 470nm Blue LED Indication - Discrete 2V Red, 3.3V Green, 3.3V Blue 4-SMD, No Lead # 150080M153000 ## General Description The 150080M153000 is a compact surface-mount full-color RGB LED manufactured by Würth Elektronik as part of the WL-SFCD series. The device integrates red, green, and blue light-emitting elements within a single package, enabling the generation of a wide spectrum of colors for status indication, user interfaces, backlighting, visual notifications, and decorative lighting applications. Its diffused lens design provides uniform light distribution and wide viewing visibility, making it suitable for industrial equipment, consumer electronics, communication devices, instrumentation systems, control panels, and embedded electronic products. The component is optimized for automated assembly processes and offers reliable optical performance, low power consumption, and long operational life. ## Key Features ### Optical Characteristics * Full-color RGB light output * Integrated red, green, and blue emitters * Diffused lens design for uniform illumination * Wide viewing angle * High-visibility indication capability * Consistent color performance ### Electrical Characteristics * Low-power operation * Stable optical output * Suitable for indicator and backlighting applications * Reliable performance across operating conditions * Optimized for embedded electronic systems ### Mechanical Characteristics * Surface-mount package construction * Compact footprint * Low-profile package design * Compatible with automated assembly processes * Reflow-soldering compatible ### Package Construction * Common-anode configuration * Integrated multi-die LED architecture * Rectangular lens geometry * Lead-free package design * Industrial-grade construction ### Material Characteristics * High-quality encapsulation materials * Diffused optical lens * RoHS-compliant construction * Environmentally compliant materials ### Environmental Characteristics * Suitable for commercial and industrial applications * Long operational service life * Reliable operation under standard environmental conditions * Resistant to normal assembly and handling processes ### Application Areas * Status Indicators * User Interface Displays * Industrial Control Panels * Consumer Electronics * Home Appliances * Telecommunications Equipment * Instrumentation Systems * Backlighting Applications * Smart Devices * Embedded Electronic Products * Safety and Security Equipment * Human-Machine Interface Systems ### Compliance * RoHS Compliant * REACH Compliant * Lead-Free Compatible * Industry-Standard Surface-Mount Technology ## Manufacturer Würth Elektronik ## Product Family WL-SFCD SMD Full-Color Chip LED Series #150080M153000 #WurthElektronik #RGBLED #SMDLED #WLSFCD #FullColorLED #LEDIndicator #Backlighting #Optoelectronics #EmbeddedSystems #IndustrialElectronics #ConsumerElectronics #PCBDesign #ElectronicsEngineering #SMTAssembly #commonpartslibrary #optoelectronic #ledindication

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

5.5x5.0x1.6mm Top SMD Type 0.25 Watt Power integrated light source Intelligent control LED SK6812RGBW-WS is an intelligent RGBW (Red, Green, Blue, Warm White) addressable LED that integrates both the LED package and control IC into a single 5050 SMD package. Each LED functions as an individually controllable pixel, supporting 32-bit color data transmission (8 bits per channel) through a single-wire serial interface. The WS variant features a warm white channel with a color temperature of approximately 2700–3000 K, making it ideal for decorative, ambient, architectural, and smart lighting applications where accurate warm white illumination is required. The device operates from a 5 V supply and supports cascading of numerous LEDs with built-in signal reshaping for reliable long-distance data transmission. Key Features Integrated RGBW LED and control IC in a single 5050 SMD package Dedicated warm white (WS) channel, 2700–3000 K color temperature Individually addressable pixel control 32-bit color data (8-bit Red, Green, Blue, and White channels) Single-wire serial communication interface Built-in constant-current driver and PWM control Signal reshaping and automatic forwarding for long LED chains Typical data transmission rate of 800 kbps Operating voltage: 3.5 V to 5.5 V (5 V nominal) Wide operating temperature range: -40°C to +85°C High brightness, excellent color consistency, and long operational life Suitable for LED strips, pixel displays, decorative lighting, signage, and smart lighting systems #SK6812RGBW #SK6812RGBWWS #AddressableLED #RGBWLED #SmartLED #5050LED #WarmWhiteLED #LEDStrip #PixelLED #DigitalLED #EmbeddedSystems #IoTLighting #LEDDisplay #LightingDesign #Electronics

CONN HEADER TH 8POS 2.5mm 2.54mm-8P ZZ is a through-hole wire-to-board header connector from the XH-style connector family. It features a single-row 8-position configuration with approximately 2.5 mm pitch spacing, making it suitable for power and signal connections in consumer electronics, industrial controls, LED modules, battery systems, and embedded electronics. The connector is designed for PCB mounting and provides a reliable, low-cost interconnect solution for cable assemblies. Key Features Single-row 8-position (1×8) connector 2.5 mm / 2.54 mm pitch wire-to-board interface Through-hole PCB mounting Compatible with XH-series style housings Rated up to 3 A current Rated up to 250 V Tin-plated brass contacts for reliable conductivity UL94V-0 flame-retardant housing material Operating temperature range: -25°C to +85°C Suitable for power distribution and signal connections in electronic equipment Hashtags #Connector #WireToBoard #XHConnector #2_54mmPitch #ThroughHole #PCBConnector #8PinConnector #ElectronicComponents #Interconnect #EmbeddedSystems #IndustrialElectronics #PowerConnector #SignalConnector #RoHSCompliant

Optical Sensor Ambient I2C 6-UDFN Exposed Pad ## Engineering Specification ## General Description The **MAX44009EDT+T** is an Analog Devices / Maxim Integrated digital ambient light sensor designed for portable electronics, display brightness control, industrial sensors, embedded systems, and low-power optical sensing applications. It integrates an ambient light photodiode, signal conditioning, analog-to-digital conversion, and an I²C digital output interface in a compact surface-mount package. The device is suitable for systems requiring automatic brightness adjustment, low current consumption, and light measurement behavior that closely follows human-eye response. ## Device Identification Manufacturer Part Number: **MAX44009EDT+T** Manufacturer: **Analog Devices / Maxim Integrated** Product Series: **MAX44009** Device Category: **Sensor Integrated Circuit** Device Type: **Digital Ambient Light Sensor** Sensor Interface: **I²C Digital Output** Mounting Type: **Surface Mount** Package Type: **UTDFN-Opto / UDFN** ## Functional Description The device functions as a digital ambient light sensor that measures surrounding light intensity and reports the measurement through an I²C interface. It is designed to help electronic systems adjust display brightness, conserve power, improve user visibility, and respond to changes in lighting conditions. The integrated optical sensing and digital conversion circuitry reduce the need for external analog signal-conditioning components. ## Optical Sensing Description The sensor includes an on-chip photodiode with spectral response optimized to approximate human-eye sensitivity. It also incorporates infrared and ultraviolet blocking capability to improve ambient light measurement accuracy. The adaptive gain function automatically selects the appropriate measurement range, allowing the device to operate across very low-light and bright-light conditions. ## Electrical Description The **MAX44009EDT+T** operates from a low-voltage supply range and is optimized for ultra-low power consumption. It supports digital communication through an I²C interface and is suitable for battery-powered and energy-sensitive systems. Proper supply decoupling, pull-up resistor selection, and bus voltage compatibility should be considered during circuit design. ## Package and Mechanical Description The component is supplied in a compact surface-mount optical package suitable for space-constrained printed circuit board designs. The package is intended for placement where the optical sensing window has access to ambient light while maintaining proper mechanical protection from contamination, shadowing, and enclosure obstruction. ## Interface and Control Description The device communicates with a host microcontroller or processor through an I²C digital interface. The host can read ambient light data and configure device behavior through register-based communication. The selectable I²C addressing feature supports flexible integration in systems that may include multiple I²C peripherals. ## Mounting and Assembly Description The **MAX44009EDT+T** is intended for surface-mount PCB assembly using standard reflow soldering processes. PCB layout should follow the manufacturer’s recommended footprint and assembly guidance. The optical sensing area should remain unobstructed, clean, and aligned with the product enclosure opening or light pipe when used. ## Application Suitability The device is suitable for smartphones, tablets, notebooks, wearable electronics, handheld devices, display brightness control, industrial light sensing, smart home devices, battery-powered equipment, sensor modules, and embedded systems requiring digital ambient light detection. ## Design Considerations The design should account for sensor placement, optical window design, enclosure transparency, light pipe geometry, I²C bus pull-up values, supply voltage compatibility, ambient interference, temperature conditions, and contamination protection. The sensor should not be blocked by opaque materials or placed where shadows, reflections, or nearby LEDs may distort the measured ambient light level. ## Hashtags #commonpartslibrary #integratedcircuit #sensor #ambientlightsensor #digitalsensor #opticalsensor #analogdevices #maximintegrated #max44009 #max44009edt #i2csensor #lightmeasurement #brightnesscontrol #lowpowersensor #portableelectronics #displaycontrol #embeddedhardware #embeddeddesign #smdcomponent #surfacemount #utdfnpackage #uDFNpackage #pcbdesign #hardwaredesign #electronicscomponents #electronicparts #componentlibrary #engineeringparts #electronicsengineering

4 Channel AFE 12 Bit 36-WLCSP (2.8x2.56) The ADPD7000 is a highly integrated analog front end (AFE) designed for measuring various vital signals. The optical channel is designed as an optical transceiver, stimulating up to eight light emitting diodes (LEDs) and measuring the return signal on up to four separate current inputs. The signal chain rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled DC cancellation circuitry. The electrocardiography (ECG) signal acquisition is designed to support low noise, diagnostic level measurement in the presence of a variety of interferers. The ECG signal chain has a number of complementary features supporting ECG measurement, such as driven reference for common-mode rejection and lead off detection to identify a fallen electrode. The body impedance analysis (BIA) signal chain is designed for body impedance measurement with a configurable excitation path and measurement path. A 12-bit digital-to-analog converter (DAC) is used in the excitation path to generate the sinusoid wave and high precision measurement, with configurable filters used to measure the body response of the stimulus. The electrodermal activity (EDA) signal chain is designed for electrodermal activity. By multiplexing BIA and ECG peripheral circuits, the ADPD7000 supports high precision AC and DC measurement with 1 nS resolution. The data output and functional configuration use a serial port interface (SPI) on the ADPD7000. The control circuitry includes flexible LED signaling and synchronous detection, digital filters, digital wave generators, and configurable filters. The ADPD7000 is available in a 2.795 mm × 2.560 mm, 0.40 mm pitch, 36-ball WLCSP. ► Multimodal analog front end ► Optical channel ► 4 input channels with multiple operation modes for various sensor measurements ► 4-channel processing with simultaneous sampling ► 12 programmable time slots for synchronized sensor measurements ► Flexible input multiplexing to support single-ended sensor measurements ► 8 LED drivers, 2 of which can be driven simultaneously ► Flexible sampling rate from 0.004 Hz to 9 kHz using internal oscillators ► AC ambient light rejection: 78 dB up to 100 Hz ► 400 mA total LED peak drive current ► Individual ambient cancellation DAC at TIA input with 9-bit control up to 300 μA ► Individual LED DC cancellation DAC at TIA input with 7-bit control up to 190 μA ► ECG channel ► <1 µV RMS RTI noise at diagnosis bandwidth ► High input impedance 20 GΩ ► Accepts up to ±1.2 V of DC differential input range ► CMRR: 115 dB ► Flexible 4 electrode configurations to support various applications ► Both AC lead off detection and DC lead off detection ► Support always on, low power, lead on detection ► BIA channel ► Low power, high accuracy excitation path ► Configurable excitation frequency up to 250 kHz ► Sine wave excitation with a 12-bit DAC ► High accuracy with large imbalance contact impedance ≤20 kΩ ► Configurable receive filters with low noise design ► Complex impedance measurement engine ► Integrated current-limit resistors ► EDA channel ► Support both voltage excitation and current excitation ► 10 kΩ to100 MΩ measurement range with 1 nS resolution ► DFT and decimation for high accuracy measurement result ► SPI communications supported ► 704-byte FIFO

MOSFET N-CH 20V 6.3A SOT-23 The IRLML6244TRPBF is an N-channel enhancement-mode power MOSFET from Infineon Technologies (originally International Rectifier HEXFET series). It is designed for low-voltage power switching applications such as load switching, DC-DC converters, and LED control. It comes in a compact SOT-23 (Micro3™) surface-mount package, making it suitable for space-constrained PCB designs while still handling relatively high current for its size. Key Features Drain-Source Voltage (VDS): 20 V Continuous Drain Current: up to ~6.3 A (at 25°C) Very low RDS(on): ~21 mΩ @ VGS = 4.5 V ~27 mΩ @ VGS = 2.5 V Low gate threshold voltage (~0.5–1.1 V typical range) (note: not a switching guarantee) Gate-to-source voltage rating: ±12 V Low power loss due to low on-resistance High efficiency switching for low-voltage systems Power dissipation: ~1.3 W (thermal limited in SOT-23 package) Fast switching performance (low gate charge ~8.9 nC) Operating temperature range: −55°C to +150°C RoHS compliant (lead-free, halogen-free) Typical Applications Low-side load switching (MCUs, GPIO control) LED strip / RGB LED drivers Battery-powered systems DC-DC converter switching Small motor or relay driving General-purpose power management in compact electronics Important Design Note Even though it has a low VGS(th), this MOSFET is not selected based on threshold voltage. What matters is the RDS(on) at your gate drive voltage (2.5 V / 3.3 V / 5 V) to ensure it fully turns on with minimal heating. #CommonPartsLibrary #Transistor #FET #IRLML6244 #MOSFET #NChannelMOSFET #PowerElectronics #SOT23 #Infineon #HEXFET #LEDDriver #LowSideSwitch #ElectronicsComponents