2SA1943 PNP High Power Audio Amplifier Transistor

The 2SA1943 is a high-power PNP bipolar power transistor engineered specifically for high-fidelity audio power amplifiers and demanding industrial power circuits. Housed in a heavy-duty TO-3PL package, this transistor offers excellent power dissipation and current handling capabilities. It features superior gain linearity and low harmonic distortion, making it a staple component for clean, accurate sound reproduction in the output stages of professional audio systems and receivers.

Designed to work seamlessly as a complementary pair with the 2SC5200 NPN transistor, it delivers stable performance under high current loads. It includes a built-in mounting hole for direct attachment to large heatsinks, which ensures efficient thermal management during continuous high-power operation.

• Transistor Type: PNP Silicon Epitaxial Bipolar
• Package Type: TO-3PL (TO-264 equivalent)
• Collector-Emitter Voltage ($V_{CEO}$): -230V
• Collector-Base Voltage ($V_{CBO}$): -230V
• Emitter-Base Voltage ($V_{EBO}$): -5V
• Continuous Collector Current ($I_C$): -15A
• Base Current ($I_B$): -1.5A
• Collector Power Dissipation ($P_C$): 150W (at $T_C = 25^\circ\text{C}$)
• Transition Frequency ($f_T$): 30 MHz (Typical)

• 2 x 2SA1943 PNP High-Power Transistors