This post explains for the transistor.

The Part Number is B649, 2SB649.

The function of this semiconductor is 120V, 1.5A, PNP Transistor.

The package is TO-126 Type

Manufacturer: JCST

Preview images :

Description

B649 is 120V, 1.5A, PNP Transistor. 

 

Features

1. Low Frequency Power Amplifier Complementary Pair with 2SD669/A 1. EMITTER

 

Absolute maximum ratings ( Ta=25°C )

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

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

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

4. Collector Current: Ic = – 1. 5 A

5. Collector Dissipation : Pc = 1 W

6. Junction Temperature: Tj = 150°C

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

[…]

 

B649 PDF Datasheet

This post explains for the PNP Transistor.

The Part Number is B1202, 2SB1202.

The function of this semiconductor is 50V, 3A, PNP Transistor.

The Package is TP-FA Type

Manufacturer: Sanyo Semicon Device

Preview images :

Description

B1202 is PNP Epitaxial Planar Silicon Transistor.

PNP transistors comprise the following key components:

Features

1. Adoption of FBET, MBIT processes.

2. Large currrent capacity and wide ASO.

3. Low collector-to-emitter saturation voltage.

4. Fast switching speed.

5.  Small and slim package making it easy to make 2SB1202/2SD1802-used sets smaller.

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 60 V

2. Collector to Emitter Voltage: Vceo = – 50 V

3. Emitter to Base Voltage: Vebo = – 6 V

4. Collector Current: Ic = – 3 A

5. Collector Dissipation : Pc = 1 W

6. Junction Temperature: Tj = 150°C

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

 

Applications:

1. Voltage regulators, relay drivers

2. Lamp drivers, electrical equipment.

B1202 PDF Datasheet