Switches
A switch is a device that allows electricity to flow through a circuit by completing or interrupting the connection. It is a common component in electrical and electronic systems and is used in a variety of applications, such as controlling the flow of electricity in a circuit, turning devices on and off, and routing electrical signals. One of the primary use cases for switches is to control the flow of electricity in a circuit. This can be done by manually flipping the switch or by using a control mechanism, such as a timer or a sensor. Another common use for switches is to turn devices on and off. This can be done using a switch that is built into the device or by using a separate switch that is connected to the device. In addition to these basic use cases, switches can also be used to route electrical signals. For example, a switch can be used to route a signal from one device to another or to direct a signal to a specific circuit or component. If you're looking for a wide variety of switches for your projects, flux.ai has the world's largest community-driven public library of them. The library includes footprints, symbols, datasheets, and simulation models for a wide range of switches, making it easy to find the right switch for your needs.
SS54
DIODE SCHOTTKY 40V SMA(DO-214AC) The SS54 is a surface-mount Schottky barrier rectifier diode commonly used in power management and protection circuits. It is designed for high-speed switching applications and offers low forward voltage drop for improved efficiency in low-voltage systems. The device is widely used in DC-DC converters, reverse polarity protection, freewheeling circuits, and switching power supplies. Key Features Schottky barrier rectifier technology Maximum reverse voltage: 40 V Average forward current: 5 A Low forward voltage drop (typically around 0.55 V) High surge current capability Fast switching speed Surface-mount package (commonly DO-214AB / SMC) Low power loss and high efficiency Suitable for high-frequency applications Guard ring protection for improved reliability RoHS compliant versions available from many manufacturers Typical Applications Switching power supplies DC-DC buck or boost converters Reverse polarity protection Freewheeling / flyback diode applications Battery-powered devices LED drivers Power OR-ing circuits #CommonPartsLibrary #Diode
426 Uses0 StarsULN2803ADW
Bipolar (BJT) Transistor Array 8 NPN Darlington 50V 500mA Surface Mount 18-SOIC The ULN2803ADW is a high-voltage, high-current Darlington transistor array designed for interfacing low-level digital logic circuits with high-power loads. The device integrates eight NPN Darlington pairs with common-emitter outputs and suppression diodes for inductive load driving. It is commonly used in relay drivers, LED matrix control, solenoid actuation, motor drivers, lamp control, and industrial automation interfaces. The integrated clamp diodes enable direct driving of inductive loads without requiring additional external protection circuitry. The input stage is compatible with standard TTL and CMOS logic levels, making the device suitable for microcontroller, FPGA, and processor-based systems. The ULN2803ADW provides compact multi-channel switching capability in a wide-body SOIC surface-mount package optimized for automated assembly and high-density PCB layouts. Key Features Eight-channel NPN Darlington transistor array High-current sink driver outputs Integrated flyback suppression diodes TTL and CMOS compatible inputs Open-collector outputs Suitable for inductive and resistive loads High output voltage capability Parallel output operation supported for increased current handling Wide operating voltage range Surface-mount SOIC wide-body package Industrial and embedded control application support Electrical Characteristics Darlington transistor output configuration High DC current gain Low input current requirement Common-cathode clamp diode structure Open-collector output topology Logic-level input compatibility High-voltage output tolerance Multi-channel simultaneous switching support Applications Relay and solenoid drivers Stepper motor interfaces LED and lamp driving Industrial automation systems PLC output stages Embedded control systems Printer and actuator control Automotive electronics Logic buffer and level shifting applications Package Information Package Type: SOIC Wide Body Mounting Type: Surface Mount Multi-pin integrated driver package RoHS compliant options available #commonpartslibrary #integratedcircuit #driveric #darlingtonarray #powermanagement #industrialelectronics #embeddedhardware #relaydriver #motorcontrol #automationelectronics
82 Uses0 StarsTPS62840DLCR
1.8V to 6.5V, 750mA, 60nA IQ step-down converter The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge. The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 μA and below. 16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components. The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems. The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 , or 1S Li-Ion/LiSOCl2 • 60-nA operating quiescent current • 100% duty-cycle mode with 120-nA IQ • Input voltage range VIN from 1.8 V to 6.5 V • Output current up to 750 mA • RF friendly DCS-Control™ • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT) • 16 selectable output voltages via VSET pin • Auto transition PFM/PWM or forced-PWM mode • Selectable forced PWM and STOP modes • Output discharge function • 25-nA shutdown current • SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages #CommonPartsLibrary #IntegratedCircuit #PowerManagement
295 Uses0 StarsMOV-14D471K
VARISTOR 470V 4.5kA P=7.5mm The MOV-14D471K is a 14 mm radial leaded metal-oxide varistor designed to protect electronic circuits from sudden voltage spikes such as lightning surges, switching transients, and power-line disturbances. It works by clamping high voltage surges and safely absorbing surge energy, preventing damage to sensitive components downstream. It is commonly placed across L–N (line to neutral) in AC input stages of power supplies and appliances. ⚙️ Key Features Varistor voltage: ~470 V (at 1 mA reference current) Maximum AC operating voltage: 300 VAC Maximum DC voltage: 385 VDC Surge current capability: up to 4.5 kA (8/20 µs pulse) Energy absorption rating: ~125 J Clamping voltage: ~775 V (at rated surge current) Capacitance: ~430 pF Response time: very fast (< nanoseconds range, typical MOV behavior) Operating temperature: -40°C to +85°C (typical range)
253 Uses0 StarsAO3400
The YFW AO3400 is a 30V N-Channel Enhancement MOSFET designed for low-voltage and high-speed switching applications. It uses advanced trench MOSFET technology to achieve low on-resistance (RDS(on)), fast switching performance, and efficient power handling in a compact SOT-23 package. It is commonly used in load switching, DC-DC converters, battery-powered devices, motor control, LED driving, and PWM switching circuits. Key Features N-Channel Enhancement Mode MOSFET Drain-Source Voltage (VDS): 30V Continuous Drain Current (ID): up to 5.8A Low RDS(on): < 28mΩ @ VGS = 10V < 33mΩ @ VGS = 4.5V < 52mΩ @ VGS = 2.5V Logic-Level Gate Drive Compatible Fast Switching Speed Low Gate Charge Compact SOT-23 Package Suitable for PWM and Load Switch Applications RoHS / Pb-Free Compatible Typical Applications Power switching DC-DC converters Battery management systems Motor and fan control LED drivers Portable electronics Microcontroller-based switching circuits #CommonPartsLibrary #Transistor #FET #Mosfet
1.0k Uses0 StarsAP63203WU-7
3.8V to 32V Input, 2A Low Quiescent Current Synchronous Buck Converter with Enhanced EMI Suppression The AP63200/AP63201/AP63203/AP63205 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63200/AP63201/AP63203/AP63205 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63200/AP63201/AP63203/AP63205 has optimized designs for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases highfrequency radiated EMI noise caused by MOSFET switching. The device is available in a low-profile, TSOT26 package • VIN 3.8V to 32V • 2A Continuous Output Current • 0.8V ±1% Reference Voltage • 22µA Ultralow Quiescent Current • Switching Frequency o 500kHz: AP63200 and AP63201 o 1.1MHz: AP63203 and AP63205 • Pulse Width Modulation (PWM) Regardless of Output Load o AP63201 • Supports Pulse Frequency Modulation (PFM) o AP63200, AP63203, and AP63205 o Up to 80% Efficiency at 1mA Light Load o Up to 88% Efficiency at 5mA Light Load • Fixed Output Voltage o 3.3V: AP63203 o 5.0V: AP63205 • Proprietary Gate Driver Design for Best EMI Reduction • Frequency Spread Spectrum (FSS) to Reduce EMI • Precision Enable Threshold to Adjust UVLO • Protection Circuitry o Overvoltage Protection o Cycle-by-Cycle Peak Current Limit o Thermal Shutdown #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Switching-regulator
640 Uses0 StarsBQ25750RRVR
Charger IC Multi-Chemistry 36-VQFN (5x6) The BQ25750RRVR is a highly integrated switch-mode battery charge controller and power-path management device designed for single-cell to multi-cell lithium-ion and lithium-polymer battery-powered systems. The device supports bidirectional power conversion, enabling both battery charging and system power delivery through USB Type-C and other DC power sources. It integrates high-efficiency buck-boost charging architecture to maintain optimal charging performance across a wide input voltage range. The device is intended for portable electronics, industrial handheld equipment, USB Power Delivery applications, embedded systems, and battery-powered computing platforms requiring advanced power management and flexible charging capability. Integrated power-path management allows simultaneous system operation and battery charging while maintaining battery protection and system stability. The BQ25750RRVR supports programmable charging parameters through an I2C interface, including charge voltage, charge current, input current limit, and system power regulation. The device includes comprehensive protection functions such as overvoltage protection, overcurrent protection, thermal regulation, battery temperature monitoring, and fault reporting. High switching frequency operation enables reduced external component size and compact PCB implementation. Features Integrated synchronous buck-boost battery charger Supports USB Power Delivery and wide DC input sources Bidirectional power conversion capability I2C programmable charging and system parameters Integrated power-path management High-efficiency charging operation Supports multi-cell lithium-ion and lithium-polymer batteries Programmable input current and charge current limits Dynamic power management and system voltage regulation Integrated ADC monitoring for voltage, current, and temperature Battery supplement mode during adapter removal OTG boost mode support Thermal regulation and thermal shutdown protection Input overvoltage and overcurrent protection Battery overvoltage protection Safety timer and watchdog timer support NTC thermistor interface for battery temperature monitoring Interrupt and fault status reporting Compact WQFN package suitable for space-constrained designs Electrical Characteristics Wide input operating voltage range Programmable battery charge voltage High charge current capability Integrated low RDS(on) MOSFET drivers High switching frequency operation High conversion efficiency across operating range Low standby and shutdown current consumption Accurate input and charge current regulation Integrated analog-to-digital converter telemetry Interface and Control I2C serial communication interface Programmable charging profiles Configurable protection thresholds Status and interrupt reporting ADC telemetry reporting Enable and control pins for system integration Protection Features Input overvoltage protection Input overcurrent protection Battery overvoltage protection Thermal shutdown protection Thermal regulation control Short-circuit protection Watchdog timer protection Safety charging timer Battery temperature qualification support Package Information Package Type: WQFN Package Suffix: RRV Compact thermally enhanced package Surface-mount device Suitable for automated PCB assembly processes Applications USB Type-C charging systems Portable computers and tablets Industrial handheld devices Power banks and battery packs Embedded battery-powered systems Portable instrumentation Consumer electronics Smart battery charging platforms #commonpartslibrary #integratedcircuit #powermanagement #batterycharger
21 Uses0 StarsBQ25622RYKR
Charger IC Lithium Ion/Polymer 18-WQFN-HR (3x2.5) The BQ25622RYKR is a highly integrated standalone switch-mode battery charge management and system power-path management device designed for single-cell lithium-ion and lithium-polymer batteries. The device integrates a high-efficiency synchronous buck charger, system power-path control, input current management, and battery protection functions into a compact solution optimized for portable and embedded applications. The device supports USB and external adapter power sources while providing programmable charging parameters through an I²C interface. Integrated power MOSFETs and advanced power management features reduce external component count and improve overall system efficiency. The charger incorporates dynamic power management, thermal regulation, battery temperature monitoring, and multiple safety protections to ensure reliable operation under varying load and environmental conditions. The BQ25622 family is designed for compact battery-powered systems requiring efficient charging, intelligent power-path control, and low system power consumption. Engineering Specification Manufacturer: Texas Instruments Device Type: Single-Cell Li-Ion/Li-Polymer Switching Battery Charger with Integrated Power-Path Management Battery Chemistry Support: Lithium-Ion and Lithium-Polymer Charging Topology: Synchronous Buck Switching Charger Input Power Sources: USB Input and External DC Adapter Support Charge Current Capability: Programmable Fast Charge Current Support Communication Interface: I²C Serial Communication Interface Integrated Power Devices: Internal High-Side and Low-Side MOSFETs Charging Features: Precharge Mode Fast Charge Mode Charge Termination Automatic Recharge Programmable Charge Parameters Safety Timer Control Power Management Features: Dynamic Power-Path Management Input Current Optimization Narrow Voltage DC Regulation Input Voltage Regulation System Voltage Regulation Monitoring and Reporting Features: Charge Status Monitoring Fault Status Reporting Battery Temperature Monitoring through NTC Interface Input Source Detection Protection Features: Input Overvoltage Protection Battery Overvoltage Protection Thermal Shutdown Protection Thermal Regulation Input Current Limiting Short-Circuit Protection Safety Timer Protection Package Type: WQFN Package Package Variant: RYK Mounting Type: Surface Mount Typical Applications: Portable Consumer Electronics Embedded Battery-Powered Devices IoT Systems Handheld Industrial Equipment USB-Powered Systems Wearable Electronics Portable Medical Devices #commonpartslibrary #integratedcircuit #powermanagement #batterycharger
2 Uses0 Stars
