2SA940 Transistor – A940 – PNP Power TR – Mospec

What is 2SA940?

This is PNP bipolar transistor commonly used in audio amplifier circuits. Low noise and distortion in audio applications. Can be used in a variety of applications including amplifiers, switching, and linear regulators.

Function: PNP Power Transistor (1.5A / 150V / 25W )

Package: TO-220 Type

Manufacturer: Mospec Semiconductor




2SA940 Transistor is designed for use in general purpose power amplifier, vertical output application.

Low collector current compared to other power transistors, limiting its use in higher power applications. Relatively low voltage and current ratings compared to other power transistors.

Absolute maximum ratings

1. Collector to Base Voltage: Vcbo = 150 V
2. Collector to Emitter Voltage: Vceo = 150 V
3. Emitter to Base Voltage: Vebo = 5.0 V
4. Collector Current: Ic = 1.5 A
5. Total Dissipation: Pd = 25 W ( Tc = 25°C )
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C

2SA940 Datasheet

2SA940 Datasheet

2SA940-mosfet pdf


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D13009K Datasheet PDF – 400V, 12A, NPN Power Transistor

This is one of the transistor types.

Part Number: D13009K, 3DD13009K

Function: NPN bipolar power transistor ( 12A, 400V )

Package: TO-220C, TO-3PB

Manufacturer: Jilin Sino Microelectronics ( http://www.hwdz.com.cn/ )

Image and Pinouts:

D13009K datasheet


D13009K is a high voltage fast switching power transistor that falls under the category of NPN transistors. The collector current of this device is 12A which projects it can endure load under 12A. This chip is mainly used in amplification and switching applications


1. High pressure
2. High current capacity
3. High switching speed
4. High reliability
5. High-frequency switching power supply
6. Ultrasonic Generator
7. High-frequency power conversion
8. General power amplifier circuit


1. Energy-saving light
2. Electronic ballasts
3. High frequency switching power supply
4. High frequency power transform
5. Commonly power amplifier

Marking Information

D13009K Main Characteristics

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 700 V
2. Collector to Emitter Voltage: Vceo = 400 V
3. Emitter to Base Voltage: Vebo = 9 V
4. Collector Current: Ic = 12 A
5. Collector Dissipation: Pc = 100 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C

Other data sheets are available within the file: 3DD13009K-O-C-N-B, 3DD13009K-O-AB-N-B

D13009K Datasheet PDF Download


D13009K pdf


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