Transistor A473 PNP 3A 25V

The Transistor A473 is a high-quality PNP transistor designed for low to medium power applications requiring stability, efficiency, and excellent current handling. With a collector current capacity of 3A and a collector-emitter voltage of 25V, the Transistor A473 provides outstanding performance in amplifier stages, switching circuits, and voltage regulation systems. Its compact design, fast response, and reliable thermal stability make it a preferred choice for both professional and educational electronic applications.

Key Features

• Type: PNP Silicon Power Transistor

• Collector Current (Ic): 3A continuous

• Collector-Emitter Voltage (Vce): 25V

• Collector-Base Voltage (Vcb): 40V

• Emitter-Base Voltage (Veb): 5V

• DC Current Gain (hFE): 40 – 250 (depending on voltage and current)

• Transition Frequency (fT): 10 MHz typical

• Package Type: TO-220 for superior heat dissipation and durability

Advantages

• High collector current capability (3A) suitable for medium-power applications.

• Excellent thermal stability ensures consistent performance under varying loads.

• Low collector-emitter saturation voltage, improving overall circuit efficiency.

• Compact and reliable design for use in space-limited devices.

• High gain stability across a wide range of temperatures and voltages.

• Perfect complementary match with NPN transistors like C5200 for push-pull amplifier configurations.

Applications

• Audio Power Amplifiers: Provides smooth, clear output and consistent performance.

• Switching Circuits: Delivers reliable and efficient operation in medium-current systems.

• Voltage Regulators: Maintains steady output voltage for sensitive electronic components.

• Motor Control Systems: Efficiently drives DC motors and relays with precision.

• Industrial and Educational Projects: Suitable for prototyping and electronic training modules.

Electrical Characteristics (Typical Values at 25°C)

Datasheet Summary

• Model: A473

• Polarity: PNP

• Collector-Emitter Voltage (Vce): 25V

• Collector Current (Ic): 3A

• Power Dissipation: 40W

• Frequency Response: 10 MHz

• Package Type: TO-220

• Complementary Pair: C5200 (NPN Transistor)

• Operating Temperature Range: -55°C to +150°C

Conclusion

The Transistor A473 is a dependable PNP transistor ideal for audio amplifiers, voltage regulators, and switching systems. Its combination of high gain, low saturation voltage, and excellent thermal performance ensures reliability and efficiency in every application. Whether used in professional audio systems, control circuits, or educational experiments, the Transistor A473 PNP 3A 25V provides outstanding stability, power efficiency, and long operational life — making it a valuable component for engineers, technicians, and hobbyists seeking precision and performance in their designs.