Transistors
A transistor is a type of electronic device that controls the flow of electricity or current through a circuit. It acts as a switch or gate, allowing current to pass through or blocking it, depending on the input signal applied to the transistor. Transistors are widely used in a variety of electronic devices and systems, including computers, televisions, radios, and smartphones. They are also used in a range of industrial and medical applications, such as power supply systems and medical equipment. Flux.ai is home to the world's largest community-driven public library of transistors, with footprints, symbols, datasheets, and simulation models available for a wide range of devices. The library is constantly being updated and expanded by a community of engineers and enthusiasts, making it an invaluable resource for anyone working with transistors. Whether you're a student, hobbyist, or professional engineer, you'll find everything you need to know about transistors at Flux.ai.
FS8205A
The FS8205A is a dual N-channel enhancement-mode power MOSFET designed primarily for lithium-ion and lithium-polymer battery protection applications. Manufactured by several semiconductor vendors including Fortune Semiconductor, this device integrates two low on-resistance MOSFETs within a compact surface-mount package, enabling efficient bidirectional current control for battery charging and discharging systems. The device is commonly paired with single-cell battery protection controller ICs such as the DW01A to provide overcharge, overdischarge, overcurrent, and short-circuit protection in portable electronic products. Its low drain-to-source resistance minimizes conduction losses and improves overall battery efficiency while maintaining compact PCB layout requirements. The FS8205A is widely used in battery management systems, portable consumer electronics, rechargeable battery packs, USB-powered devices, IoT hardware, and embedded power management circuits requiring reliable load switching and battery protection functionality. Engineering Specification Device Type Dual N-channel power MOSFET Transistor Technology Enhancement-mode MOSFET architecture Channel Configuration Dual independent N-channel MOSFETs Switching Characteristics Low on-resistance for efficient power switching Gate Characteristics Logic-level gate drive compatibility Current Handling Optimized for battery charge and discharge current control Power Efficiency Low conduction loss for improved battery runtime Protection System Compatibility Designed for lithium battery protection controller integration Thermal Characteristics Compact thermal-efficient surface-mount structure Package Type SOP-8 surface-mount package Mounting Style Surface mount technology Reliability Features Stable switching performance and robust load handling capability Applications Lithium-ion battery protection Battery management systems Portable electronics Rechargeable battery packs USB-powered devices Power path switching Embedded systems Consumer electronics IoT hardware Load switching circuits Manufacturer Commonly manufactured by Fortune Semiconductor and compatible vendors #commonpartslibrary #mosfet #dualmosfet #nchannelmosfet #batteryprotection #batterymanagement #powermanagement #powerelectronics #embeddedhardware #consumerelectronics #surfaceountcomponents #electronicsdesign #lithiumbattery #loadswitch #portableelectronics
331 Uses0 StarsIRLZ44ZPBF
N-Channel 55 V 51A (Tc) 80W (Tc) Through Hole TO-220AB The IRLZ44ZPBF is a logic-level N-channel power MOSFET manufactured by Infineon Technologies under the International Rectifier product family. This device is optimized for low-voltage switching applications and is designed to provide high current handling capability with low on-state resistance. Its logic-level gate drive characteristic allows efficient operation directly from low-voltage microcontrollers and digital control circuits without requiring specialized gate drivers. The MOSFET is widely used in power management systems, motor control circuits, DC-DC converters, battery-powered devices, switching regulators, LED drivers, and general-purpose high-current switching applications. The device features fast switching performance, rugged avalanche characteristics, and low conduction losses, making it suitable for efficient power conversion and industrial electronic designs. Engineering Specification Device Type N-channel logic-level power MOSFET Transistor Technology Enhancement-mode HEXFET power MOS technology Channel Configuration Single N-channel Gate Drive Compatibility Logic-level gate operation compatible with low-voltage control systems Drain-to-Source Characteristics Low drain-to-source on-resistance for reduced conduction losses Switching Performance Fast switching capability for high-efficiency power applications Power Dissipation Designed for high-current and high-power switching operation Package Type TO-220 through-hole package Mounting Style Through-hole mounting Thermal Characteristics Optimized thermal performance for heatsink attachment and power dissipation Protection Features Rugged avalanche-rated structure for improved reliability Efficiency Features Low gate charge and low conduction losses Applications Motor drivers PWM switching circuits DC-DC converters Battery-powered electronics LED lighting control Power management systems Load switching Industrial automation Embedded power control High-current switching circuits Manufacturer Infineon Technologies / International Rectifier #commonpartslibrary #mosfet #powermosfet #nchannelmosfet #logiclevelmosfet #powerelectronics #switchingdevices #motorcontrol #dcdcconverter #embeddedhardware #powermanagement #electronicsdesign #throughholecomponents #infineon #internationalrectifier
69 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 StarsSTDRIVEG600
High voltage half-bridge gate driver for GaN transistors Features • dV/dt immunity ±200 V/ns • Driver current capability: – 1.3/2.4 A source/sink typ @ 25 °C, 6 V – 5.5/6 A source/sink typ @ 25 °C, 15 V • Separated turn on and turn off gate driver pins • 45 ns propagation delay with tight matching • 3.3 V, 5 V TTL/CMOS inputs with hysteresis • Interlocking function • UVLO on low-side and high-side sections • Dedicated pin for shut down functionality • Over temperature protection Applications • High-voltage PFC, DC-DC and DC-AC converters • Switch-mode power supplies • UPS systems • Solar power • Motor driver for home appliances, factory automation and industrial drives. #CommonPartsLibrary #IntegratedCircuit #powermanagement
25 Uses0 StarsLGS5145
Buck Switching Regulator IC Adjustable 1 Output 1000mA SOT-23-6 The LGS5145 is a step-down DC/DC regulator with internal switching, featuring SKIP control mode, which combines low quiescent current with high switching frequency to achieve high efficiency over a wide range of load currents. The SKIP mode uses a short “burst” cycle to switch the inductor current through the internal power MOSFETs, followed by a sleep cycle in which the power switch is turned off and the load current is supplied by the output capacitor. At light loads, the burst cycle is a fraction of the total cycle time, minimizing the average supply current and greatly improving efficiency at light loads. The LGS5145 has a wide input voltage range of 4.5V55V, minimizing the need for external surge suppression components.The LGS5145 features an integrated low resistance 0.6Ω high-side power MOSFET that provides at least 1A of output current capability with excellent load and line transient response. Junction temperature range from -40°C to +125°C ■ All ports are ESD protected to 3000V (HBM). ■ Wide input voltage range: 4.5V-55V ■ 600mΩ High Side Metal Oxide Semiconductor Field Effect Transistors ■ At least 1000mA continuous current output capability ■ Up to 90% efficiency ■ SKIP mode provides very high light load efficiency ■ 1.2MHz fixed operating frequency ■ Internal compensation helps reduce solution size, cost and design complexity ■ Supports capacitive start for large loads ■ Cycle-by-cycle overcurrent protection ■ Output short circuit protection ■ thermal shutdown protection ■ Available in ultra-small package SOT23-6 package #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Voltage-regulator #Switching-regulator
12 Uses0 StarsLM393N
Comparator Standard (General Purpose) Open-Collector, Rail-to-Rail 8-PDIP The LM393N is a dual independent voltage comparator designed for operation from a single power supply over a wide range of voltages. It can also operate from split power supplies, allowing flexible integration into analog and mixed-signal systems. Each comparator features high gain and low input offset voltage, enabling precise comparison between two input signals. The device is optimized for low power consumption and supports open-collector outputs, making it suitable for interfacing with a variety of logic families and external circuits. Its robust design allows reliable performance across a broad temperature range, making it appropriate for industrial, automotive, and consumer applications. Functional Overview The device contains two separate comparators sharing a common power supply. Each comparator compares the voltage at its inverting and non-inverting inputs and drives the output transistor accordingly. The open-collector output stage allows wired-OR configurations and easy level shifting using an external pull-up resistor. When the non-inverting input voltage exceeds the inverting input voltage, the output transistor turns off, allowing the output to be pulled high externally. When the inverting input is higher, the transistor conducts and pulls the output low. Electrical Characteristics The LM393N operates over a wide supply voltage range and exhibits low input bias current and low input offset voltage, contributing to stable and accurate performance. The input common-mode voltage range includes ground, enabling ground-referenced sensing. The output stage is capable of sinking current sufficient to drive loads such as LEDs, relays (with appropriate buffering), or logic inputs. The device is designed for low supply current, supporting energy-efficient designs. Input and Output Behavior Inputs are high impedance and suitable for direct connection to sensors, reference voltages, or signal conditioning networks. The output requires an external pull-up resistor to define the high logic level. This configuration allows flexibility in selecting output voltage levels independent of the supply voltage, within device limits. The open-collector structure also supports multiple outputs connected together for logical operations. Thermal and Environmental Conditions The device is specified for operation across a wide temperature range, ensuring stable functionality under varying environmental conditions. Proper thermal management and adherence to recommended operating conditions ensure long-term reliability. Packaging and Pin Configuration The LM393N is typically provided in a dual in-line package suitable for through-hole mounting. The pin configuration supports two independent comparator channels, each with inverting input, non-inverting input, and output, along with shared power supply and ground connections. Applications The LM393N is suitable for voltage level detection, threshold sensing, zero-crossing detection, oscillator circuits, pulse generation, and analog-to-digital interfacing. It is commonly used in power management systems, battery monitoring, signal conditioning, and embedded control systems. Design Considerations External components such as pull-up resistors, input filtering networks, and hysteresis feedback may be required depending on the application. Careful layout and noise considerations improve performance in high-sensitivity circuits. The open-collector output requires proper configuration to ensure correct logic levels and switching behavior. #commonpartslibrary #integratedcircuit #comparator
29 Uses0 StarsMMBT2222ALT3G
Bipolar (BJT) Transistor NPN 40V 600 mA 300MHz 300 mW Surface Mount SOT-23-3 (TO-236) The MMBT2222ALT3G is a NPN general-purpose bipolar junction transistor (BJT) manufactured by onsemi, designed in a SOT-23 surface-mount package. It is the SMD version of the well-known 2N2222A transistor family, used for switching and signal amplification in compact electronic circuits. It is widely used in industrial, automotive (AEC-Q101 qualified variants), and general embedded systems due to its reliability, small size, and good electrical performance. Key Features NPN General-Purpose Transistor Suitable for switching and low-power amplification Collector-Emitter Voltage (Vceo) Up to 40 V Collector Current Up to 600 mA Power Dissipation Around 225–300 mW (depending on package conditions) High Frequency Performance Transition frequency up to ~300 MHz DC Current Gain (hFE) Typically ~100 at moderate currents Low Saturation Voltage Efficient switching performance for digital circuits SOT-23 Surface-Mount Package Compact footprint for modern PCB designs Wide Temperature Range Typically -55°C to +150°C RoHS / Lead-Free Compliant Environmentally compliant manufacturing Typical Applications LED switching circuits Relay driver stages MCU signal interfacing (Arduino, ESP32, etc.) Small motor drivers General signal amplification Automotive and industrial control circuits Important Note MMBT2222ALT3G = SMD version (SOT-23) Equivalent to 2N2222A (TO-92 through-hole version) in function, but not in physical package. 2N2222A SOT-23 #commonpartslibrary #transistor #bjt
711 Uses0 Stars
