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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2N5401 Transistor – PNP, (-)150V, (-) 600mA, TO-92

What is 2N5401?

This is a PNP bipolar junction transistor (BJT) designed for general-purpose amplifier and switching applications. It has a maximum collector current rating of 0.6A, a maximum collector-emitter voltage rating of 150V, and a maximum power dissipation rating of 625mW.

Part Number: 2N5401

Function: -150V, -600mA, PNP Silicon Transistor

Package: TO-92 Type

Manufacturer: ISC, NTE, NXP, AuK


2N5401 datasheet



This is General Purpose Si-Epitaxial Planar PNP Transistor. he 2N5401 comes in a TO-92 package and has a low noise figure, making it suitable for use in audio amplifier circuits.

• General purpose amplifier
• High voltage application


• High collector breakdown voltage : VCBO= -160V, VCEO= -160V
• Low collector saturation voltage : VCE(sat)=-0.5V(MAX.)
• Complementary pair with 2N5551
• Junction Temperature: Tj = 150°C
• Storage Temperature: Tsg = -55 ~ +150°C

Advantage Vs disadvantage


1. High voltage and current handling capabilities

2. Low noise and distortion for use in audio amplifier circuits

3. Low power dissipation for efficient operation

4. Availability and cost-effectiveness


1. Limited maximum current rating, which makes it unsuitable for high power applications

2. Relatively low maximum frequency rating, which makes it unsuitable for high-speed applications

3. Limited gain bandwidth product, which limits its use in high-frequency amplification circuits


Other data sheets are available within the file: N5401

2N5401 Datasheet PDF Download

2N5401 pdf

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