BD138

$0.11

Description：TRANS PNP 60V 1.5A TO-126
Series：-

SKU:8e5e1956416f Category: Single Bipolar Transistors Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：TRANS PNP 60V 1.5A TO-126
Series：-
Mfr：onsemi
Package：Bulk
Transistor Type：PNP
Current - Collector (Ic) (Max)：1.5 A
Voltage - Collector Emitter Breakdown (Max)：60 V
Vce Saturation (Max) @ Ib, Ic：500mV @ 50mA, 500mA
Current - Collector Cutoff (Max)：100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce：40 @ 150mA, 2V
Power - Max：1.25 W
Frequency - Transition：-
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-225AA, TO-126-3
Supplier Device Package：TO-126
Grade：-
Qualification：-

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BD138

Overview

The onsemi BD138 is a PNP epitaxial silicon power transistor housed in the TO-126 package. It features a maximum collector-emitter voltage of 60 V and a continuous collector current rating of 1.5 A. The device supports a total device dissipation of 12.5 W at case temperatures of 25°C, with a derating factor of 100 mW/°C above this threshold. It operates within a junction temperature range of -55°C to +150°C.

Feature Summary

Designed for medium power linear and switching applications
High DC current gain suitable for signal amplification
Complementary configuration available with BD137 series

Applications

Audio amplifier circuits
Driver stages in complementary or quasi-complementary topologies
General-purpose linear circuit design

Procurement Notes

Verify the specific suffix (e.g., -6) against the required datasheet revision. Confirm RoHS compliance status as older variants may differ. Ensure the TO-126 flange mount package matches the thermal management requirements of the target application.

Selection Notes

Select based on the 60 V collector-emitter voltage limit and 1.5 A current capacity. Consider the 12.5 W power dissipation capability when designing heat sinking solutions. Verify compatibility with complementary NPN transistors if used in push-pull configurations.

Part Context

The BD138 belongs to a family of medium power PNP transistors intended for audio and driver applications. It serves as a complement to the BD137 NPN transistor, enabling balanced performance in push-pull output stages. The TO-126 package provides robust mechanical stability for higher power handling.