BD139 Datasheet PDF – 80V, 1.5A, NPN Transistor

See the preview image and the BD139 PDF file for more information.

Part Number: BD139

Function: 80V, 1.5A, NPN Transistor

Package: TO-126, SOT-32 Type

Manufacturer: STMicroelectronics


BD139 transistor datasheet


This is Complementary Low Voltage Transistor.

These epitaxial planar transistors are mounted in the SOT-32 plastic package. They are designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits. The NPN types are the BD135, and the complementary PNP types are the BD136, BD139 and BD140.

BD139 Pinout

BD139 datasheet




1. High current (max. 1.5 A)
2. Low voltage (max. 80 V).
3. Products are pre-selected in DC current gain

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 80 V
2. Collector to Emitter Voltage: Vceo = 80 V
3. Emitter to Base Voltage: Vebo = 5 V
4. Collector Current: Ic = 1.5 A
5. Total Dissipation : Pc = 8 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C


1. General purpose

Other data sheets are available within the file: BD135, BD135-16, BD136, BD136-16, BD137

BD139 Datasheet PDF Download

BD139 pdf

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