2SC4388

Single Bipolar Transistors Overview

The Sanken 2SC4388 is a silicon NPN triple diffused planar transistor designed for audio and general-purpose applications. It serves as the complement to the 2SA1673 PNP type. Key absolute maximum ratings include a collector-base voltage of 200 V, a collector-emitter voltage of 180 V, and a continuous collector current of 15 A. The device supports a maximum power dissipation of 85 W at a case temperature of 25°C. Electrical characteristics specify a minimum DC current gain (hFE) of 50 at IC=50mA and VCE=4V, with a typical transition frequency (fT) of 20 MHz.

Single Bipolar Transistors Feature Summary

• Triple diffused planar construction for high reliability
• Designed specifically as a complementary pair to the 2SA1673
• Suitable for audio amplification and general-purpose switching

Single Bipolar Transistors Applications

• Audio amplifier circuits
• General-purpose switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific hFE rank required for the design, as the datasheet defines distinct gain ranges: Rank O (50 to 100), Rank P (70 to 140), and Rank Y (90 to 180). Confirm that the TO-3PF (FM100) package form factor matches the thermal and mechanical constraints of the target PCB or heatsink assembly before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a high-current NPN transistor is needed to match the 2SA1673 PNP counterpart in push-pull configurations. Ensure the application operates within the 180 V collector-emitter limit and accounts for the 85 W power dissipation capability under appropriate cooling conditions. Consider the hFE rank requirements for consistent gain matching in balanced circuit designs.

Single Bipolar Transistors Part Context

This component belongs to Sanken's lineup of discrete power transistors utilizing triple diffused planar technology. It is engineered to provide matched performance characteristics when paired with its complementary PNP device, ensuring symmetry in output stages. The FM100 (TO-3PF) package provides an isolated mounting surface for efficient heat transfer to external heatsinks.

Single Bipolar Transistors Replacement Considerations

The 2SA1673 is documented as the direct complementary partner. Verify pinout compatibility and thermal resistance values against other available TO-3PF NPN transistors if substituting.