B631K Datasheet – 120V, 1A, PNP Transistor – 2SB631K

This post explains for the Transistor.

The part number is 2SB631K, B631K

The function of this semiconductor is -120V, -1A, PNP Transistor.

The package is TO-126 Type.

Manufacturer: Sanyo Semicon Device


B631K datasheet


The B631K is -120V, -1A, PNP Epitaxial Planar Silicon Transistor.

A PNP transistor is a type of bipolar junction transistor (BJT) that has a “positive-negative-positive” (PNP) configuration.

The term “PNP” refers to the polarities of the three regions in the transistor: the P-type base, the N-type collector, and the P-type emitter.


1. High breakdown voltage VCEO 100/120V, High current 1A.

2. Low saturation voltage, excellent hFE linearity.


Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 120 V

2. Collector to Emitter Voltage: Vceo = – 120 V

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

4. Collector Current: Ic = – 1A

5. Total Dissipation : Pc = 1W

6. Junction Temperature: Tj = 150°C

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


B631K pinout



1. Low-Frequency Power Amplifier

B631K Datasheet PDF

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