2SB1649

Single Bipolar Transistors Overview

The Sanken Electric USA Inc. 2SB1649 is a silicon PNP epitaxial planar transistor designed for audio, series regulator, and general-purpose applications. It serves as the complement to the 2SD2561 NPN device. Key electrical ratings include a collector-emitter voltage of -150 V, collector current of -15 A, and power dissipation of 85 W at 25°C case temperature. The DC current gain (hFE) has a minimum rating of 5000, with specific rank options available for higher performance bands.

Single Bipolar Transistors Feature Summary

• High DC current gain capability suitable for sensitive driver stages
• Complementary pairing with the 2SD2561 NPN transistor
• Robust thermal management via TO-3PF package

Single Bipolar Transistors Applications

• Audio amplifier output stages
• Series voltage regulators
• General-purpose switching circuits

Single Bipolar Transistors Procurement Notes

Verify the specific hFE rank suffix (O, P, or Y) required for your design, as these denote distinct gain ranges. Confirm the package type matches the FM100 (TO-3PF) footprint. Ensure thermal interface materials are compatible with the metal tab construction for effective heat sinking during high-current operation.

Single Bipolar Transistors Selection Notes

Select this component when high current handling and substantial current gain are necessary in a PNP configuration. The complementary nature with the 2SD2561 makes it ideal for push-pull topologies. Consider the thermal resistance characteristics if operating without an infinite heatsink or under continuous load conditions.

Single Bipolar Transistors Part Context

This device belongs to Sanken's discrete bipolar transistor lineup, specifically engineered for power amplification tasks. It utilizes an epitaxial planar process to ensure reliable performance in demanding environments. The TO-3PF package provides mechanical stability and efficient heat transfer capabilities essential for power electronics.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly identifies the 2SD2561 as the complementary counterpart. No other direct substitute part numbers are documented in the provided source material.