2SC4731S-AY

Single Bipolar Transistors Overview

The onsemi 2SC4731S-AY is a single NPN bipolar junction transistor (BJT) designed for through-hole mounting in a TO-220-3 FLP package without a tab. It features a maximum collector-emitter breakdown voltage of 100 V and a continuous collector current rating of 4 A. The device supports a power dissipation of 1.5 W and offers a transition frequency of 180 MHz. Typical saturation voltage is 400 mV at 2 A collector current with 200 mA base drive, ensuring efficient switching performance.

Single Bipolar Transistors Feature Summary

• High current handling capability up to 4 A for robust load driving
• Wide voltage tolerance with 100 V collector-emitter breakdown
• Optimized switching speed with 180 MHz transition frequency
• Low saturation voltage for reduced power loss during conduction

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Power supply output stages
• Motor control driver interfaces
• Amplifier output stages

Single Bipolar Transistors Procurement Notes

Verify the manufacturer part number matches exactly 2SC4731S-AY to ensure correct NPN configuration and 4A rating. Confirm the package type is TO-220-3 FLP without tab as specified. Request official datasheets from onsemi or authorized distributors to validate electrical parameters against design requirements before procurement.

Single Bipolar Transistors Selection Notes

Select this component when high current capacity and moderate voltage ratings are required in a through-hole format. Ensure thermal management solutions support the 1.5 W power dissipation limit. Compare hFE characteristics and saturation voltages against circuit requirements to guarantee adequate gain and low losses in switching applications.

Single Bipolar Transistors Part Context

This NPN BJT belongs to onsemi's single transistor lineup, offering a balance of current handling and voltage blocking for general electronics. The TO-220-3 FLP package provides mechanical stability and thermal conductivity suitable for board-level mounting. It serves as a reliable discrete solution for power control tasks where integrated drivers are not feasible.

Single Bipolar Transistors Replacement Considerations

The 2SC4731T-AY is a related variant within the same series. Verify pinout compatibility and specific electrical tolerances before substitution. Ensure the replacement maintains the required 4 A current and 100 V voltage ratings for equivalent performance.