The BD139 is a NPN complementary low voltage NPN transistor in 3 pin Its package is TO-126. This device is designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits.
|Type||Medium Power NPN transistor|
|Maximum collector power dissipation (Pc)||12 W|
|Maximum collector-base voltage Vcb||80 V|
|Maximum emitter-base voltage||5 V|
|Maximum collector current||1.5 A|
|Applications||Medium Power and Liner Switching|