BDW73B-S

Description：TRANS NPN DARL 80V 8A TO-220
Series：-

SKU:cf77457e853f Category: Single Bipolar Transistors Brand: Bourns Inc.

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Product introduction

BDW73B-S is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists Bourns Inc.. Its product description is TRANS NPN DARL 80V 8A TO-220. Review the specifications below when checking this part for your BOM.

Single Bipolar Transistors specifications for BDW73B-S

Description：TRANS NPN DARL 80V 8A TO-220
Series：-
Mfr：Bourns Inc.
Package：Tube
Transistor Type：NPN - Darlington
Current - Collector (Ic) (Max)：8:00 AM
Voltage - Collector Emitter Breakdown (Max)：80 V
Vce Saturation (Max) @ Ib, Ic：4V @ 80mA, 8A
Current - Collector Cutoff (Max)：500µA
DC Current Gain (hFE) (Min) @ Ic, Vce：750 @ 3A, 3V
Power - Max：2 W
Frequency - Transition：-
Operating Temperature：-65°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220
Grade：-
Qualification：-

Single Bipolar Transistors datasheet and documents for BDW73B-S

BDW73B-S

Single Bipolar Transistors Overview

The BDW73B-S is a single NPN Darlington bipolar junction transistor manufactured by Bourns Inc. It features an 80 V collector-emitter breakdown voltage and supports a maximum continuous collector current of 8 A. The device provides a power dissipation rating of 2 W when mounted in a through-hole TO-220 package. Key electrical characteristics include a collector cutoff current of 500 µA maximum and a collector-emitter saturation voltage of 4 V at 80 mA base current and 8 A collector current.

Single Bipolar Transistors Feature Summary

NPN Darlington configuration for high current gain
Through-hole TO-220 packaging for robust mounting
High collector current capability up to 8 A

Single Bipolar Transistors Applications

Power switching circuits
Motor control applications
High-current amplification stages

Single Bipolar Transistors Procurement Notes

Verify component authenticity against official Bourns documentation, as the BDW73B-S is listed as obsolete. Confirm package integrity and pinout alignment with TO-220 standards. Ensure replacement strategies account for end-of-life status by identifying qualified alternative components from authorized distributors or secondary markets.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring high current handling within a standard through-hole form factor. Evaluate thermal management requirements given the 2 W dissipation limit in the TO-220 package. Consider the 80 V voltage rating relative to circuit operating conditions. Verify compatibility with existing PCB layouts designed for TO-220 footprints.

Single Bipolar Transistors Part Context

This part belongs to Bourns Inc.'s single bipolar transistor portfolio, specifically utilizing Darlington architecture for enhanced current gain. The TO-220 package indicates suitability for industrial and consumer electronics where reliable through-hole connection is preferred over surface mount alternatives.