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 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