BD680A

$0.28

Description：TRANS PNP DARL 80V 4A SOT-32-3
Series：-

SKU:d5d6e624734b Category: Single Bipolar Transistors Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：TRANS PNP DARL 80V 4A SOT-32-3
Series：-
Mfr：STMicroelectronics
Package：Tube
Transistor Type：PNP - Darlington
Current - Collector (Ic) (Max)：4:00 AM
Voltage - Collector Emitter Breakdown (Max)：80 V
Vce Saturation (Max) @ Ib, Ic：2.8V @ 40mA, 2A
Current - Collector Cutoff (Max)：500µA
DC Current Gain (hFE) (Min) @ Ic, Vce：750 @ 2A, 3V
Power - Max：40 W
Frequency - Transition：-
Operating Temperature：150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-225AA, TO-126-3
Supplier Device Package：SOT-32-3
Grade：-
Qualification：-

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BD680A

Overview

The BD680A is a PNP power Darlington transistor manufactured by STMicroelectronics. It features a monolithic Darlington configuration with an integrated antiparallel collector-emitter diode, built using planar base island technology. Key electrical parameters include a maximum collector current (Ic) of 4 A and a collector-emitter breakdown voltage (Vceo) of 80 V. The device has a maximum power dissipation of 40 W and operates at junction temperatures up to 150°C. DC current gain (hFE) is specified as a minimum of 750 at Ic=2A and Vce=3V. The saturation voltage is 2.8 V max at Ib=40mA and Ic=2A. Collector cutoff current is 500µA max.

Feature Summary

Monolithic Darlington configuration with integrated antiparallel collector-emitter diode
Good hFE linearity for consistent amplification performance
High transition frequency (fT) capability

Applications

Power switching applications requiring high current gain
Audio amplifier output stages
Motor control circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as the BD680A may be discontinued. Ensure the package type matches design requirements before ordering. Review datasheet revisions for any parameter updates.

Selection Notes

Select this component for applications needing high current handling with moderate voltage ratings. Consider the thermal management requirements due to 40W power dissipation. Verify that the PNP polarity and Darlington structure align with circuit topology needs. Check compatibility with driving logic levels given the saturation voltage characteristics.

Part Context

The BD680A belongs to the BD6xx series of power Darlington transistors from STMicroelectronics. This family includes complementary NPN and PNP variants designed for general-purpose power switching and amplification. The devices utilize planar base island technology for improved reliability and performance compared to older technologies.