B649A PDF Datasheet – 160V, 1.5A, PNP Transistor – 2SB649A

Part Number: B649A, 2SB649A

Function: -160V, -1.5A, PNP Transistor

Package: TO-92, TO-126 Type

Manufacturer: Unisonic Technologies

Images:B649A pinout datasheet


B649A is -160V, -1.5A, PNP Transistor. A PNP transistor is a type of bipolar junction transistor (BJT) with a different structure and polarity compared to an NPN transistor.


1. Structure: A PNP transistor has a sandwich-like structure, consisting of a thin N-type layer (base) sandwiched between two P-type layers (emitter and collector).

2. Current flow: When a small current is applied to the base terminal, it allows a much larger current to flow from the emitter to the collector. This is called amplification or gain, and it makes the PNP transistor useful as an electronic switch or amplifier.

3. Voltage levels: The voltage levels in a PNP transistor are opposite to those in an NPN transistor. In a NPN transistor, the base-emitter junction is forward-biased and the collector-base junction is reverse-biased.

B649A pdf transistor


Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage : Vcbo = – 180 V

2. Collector to Emitter Voltage : Vceo = – 160 V

3. Emitter to Base Voltage : Vebo = – 5 V

4. Collector Current : Ic = -1.5 A

5. Total Dissipation : Pd = 1 W

6. Junction Temperature : Tj = 150°C

7. Storage Temperatue : Tsg = -55 ~ +150°C



1.Low frequency power amplifier complementary pair with UTC 2SB669 / 2SB669A


B649A PDF Datasheet