BD139 Datasheet – Vcbo=80V, NPN Transistor

BD139 is designed for use as audio amplifiers and drivers utilizing complementary or quasi complementary circuits. This is NPN power transistor. Complementary low voltage transistor.

Part number : BD139, BC137, BC135

Functions : Complementary Low Voltage Transistor

Package information : SOT-32, TO-126 Pin

Manufacturer : STMicroelectronics, NXP, Fairchild


BD139 transistor


Product Information

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 BD139, and the complementary PNP types are the BD136 and BD140.

Absolute maximum ratings

BD139 Datasheet PDF


1.  Products are pre-selected in DC current gain

2. General purpose

· High current (max. 1.5 A)
· Low voltage (max. 80 V).


Driver stages in hi-fi amplifiers and television circuits.



BD139 Datasheet PDF