A1837 C4793 PNP Transistor A1837 and C4793 PNP Transistor TOSHIBA A1837

Product Overview

A high-voltage PNP silicon epitaxial transistor primarily designed for use in the driver stages of high-fidelity audio power amplifiers. (Note: While your request lists both as PNP, they are actually a complementary pair: the 2SA1837 is PNP, and the 2SC4793 is NPN). Housed in a fully isolated TO-220F package, the 2SA1837 offers excellent thermal stability, high breakdown voltage, and a high transition frequency. It is widely used by audio engineers for pure, low-distortion signal driving before the final power output stage.

Core Specifications

• Manufacturer: Toshiba

• Package Type: TO-220F (Fully Isolated Through-Hole)

• Component Type: PNP Silicon Transistor (Complement to NPN 2SC4793)

• Voltage Rating ($V_{CEO}$): -230V

• Voltage Rating ($V_{CBO}$): -230V

• Current Rating ($I_C$): -1A (Continuous)

• Peak Current Rating ($I_{CP}$): -1.5A

• Power Dissipation ($P_C$): 20W (at $T_C = 25^\circ C$)

• DC Current Gain ($h_{FE}$): 100 to 320

• Gain-Bandwidth Product ($f_T$): 70 MHz (Typical)

• Marking Code: A1837

• Part Number: 2SA1837