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2SA1943 PNP Power Amplifier Transistor TO-264 DIP Package

SKU: PZTF7ZEBX3
The 2SA1943 is a high-power PNP silicon bipolar transistor designed specifically for audio power amplification and high-current switching applications. Renowned for its excellent linearity, high current capability, and low distortion characteristics, the 2SA1943 is widely used in professional audio amplifiers, home theater systems, power amplifiers, and industrial electronics. Housed in a robust TO-264 package, this transistor offers superior heat dissipation...
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Specifications

Specifications:

Component Type: PNP Power Transistor
Model: 2SA1943
Transistor Polarity: PNP
Package Type: TO-264
Mounting Type: Through-Hole
Collector-Emitter Voltage (VCEO): -230V
Collector-Base Voltage (VCBO): -230V
Emitter-Base Voltage (VEBO): -5V
Continuous Collector Current (IC): -15A
Peak Collector Current (ICM): -20A
Power Dissipation (PC): 150W
DC Current Gain (hFE): 55 to 160
Transition Frequency (fT): 30MHz Typical
Collector Saturation Voltage (VCE(sat)): Low
Junction Temperature: +150°C Maximum
Operating Temperature Range: -55°C to +150°C
Storage Temperature Range: -55°C to +150°C
RoHS Compliance: Yes

Additional Resources

2SA1943.PDF

FAQ

1. What is the 2SA1943 transistor used for?

The 2SA1943 is primarily used in audio power amplifiers, power supply circuits, and high-current switching applications.

2. Which transistor is commonly used with the 2SA1943?

The 2SA1943 is commonly paired with the complementary 2SC5200 NPN transistor in Class AB amplifier designs.

3. What is the maximum collector current of the 2SA1943?

The transistor supports a continuous collector current of up to 15A under proper operating conditions.

4. Why is the 2SA1943 popular in audio amplifier circuits?

It offers excellent linearity, low distortion, high power dissipation, and reliable performance, making it ideal for high-fidelity audio systems.

5. Does the 2SA1943 require a heat sink?

Yes, for amplifier and high-power applications, a suitable heat sink is recommended to dissipate heat and ensure reliable long-term operation.

View full product details

The 2SA1943 is a high-power PNP silicon bipolar transistor designed specifically for audio power amplification and high-current switching applications. Renowned for its excellent linearity, high current capability, and low distortion characteristics, the 2SA1943 is widely used in professional audio amplifiers, home theater systems, power amplifiers, and industrial electronics.

Housed in a robust TO-264 package, this transistor offers superior heat dissipation and reliability under high-power operating conditions. It is commonly paired with the complementary 2SC5200 NPN transistor to form high-performance Class AB audio amplifier output stages capable of delivering exceptional sound quality and power output.

Its wide safe operating area, high breakdown voltage, and excellent frequency response make it a preferred choice among audio amplifier designers and electronics enthusiasts.

Key Features

  • High-power PNP bipolar transistor
  • Optimized for audio amplifier applications
  • Excellent linearity and low distortion
  • High collector current capability
  • High voltage handling capacity
  • Wide safe operating area (SOA)
  • Fast switching performance
  • High power dissipation rating
  • Complementary pair to 2SC5200 transistor
  • Rugged TO-264 package
  • Easy heat sink mounting
  • Reliable long-term operation
  • Suitable for power amplification and switching
  • Widely used in professional audio systems