2SB817D

Single Bipolar Transistors Overview

The Sanyo 2SB817D is a silicon PNP epitaxial planar power transistor designed for high-current switching and audio amplifier applications. It features a maximum collector current of 12 A and a collector-emitter voltage rating of 140 V, with a power dissipation capacity of 60 W in audio frequency output circuits. The device utilizes an AFET (Advanced Field Effect Transistor) process to ensure low saturation voltage and wide safe operating area characteristics. Packaged in a TO-3P metal case for efficient heat dissipation, it serves as a robust component for relay drivers, lamp drivers, and automotive wiring systems.

Single Bipolar Transistors Feature Summary

• Utilizes AFET processed technology for enhanced performance
• Provides low saturation voltage for improved efficiency
• Offers wide Safe Operating Area (ASO) for reliability
• Capable of handling large current switching loads

Single Bipolar Transistors Applications

• Audio frequency power amplifiers
• Relay driver circuits
• Lamp driver systems
• Automotive wiring applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'D' against official Sanyo or Semie Sanyo documentation, as standard listings often reference the base 2SB817. Confirm package type compatibility, typically TO-3P, and check discontinuation status, as many legacy Sanyo transistors have been phased out. Ensure the source provides valid datasheets confirming the electrical parameters match the required 12A/140V specifications before procurement.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring high current handling up to 12 A with moderate voltage ratings of 140 V. The TO-3P package necessitates appropriate thermal management solutions due to its 60 W dissipation rating. Consider the complementary NPN counterpart, such as the 2SD1047, for push-pull amplifier configurations. Verify that the application benefits from the low saturation voltage and wide ASO provided by the AFET process technology.

Single Bipolar Transistors Part Context

The 2SB817 belongs to Sanyo's lineup of silicon PNP power transistors engineered for audio and switching applications. It is frequently paired with the 2SD1047 NPN transistor to form complementary pairs for balanced output stages. The series is characterized by its robust construction and suitability for general-purpose power amplification where high current capability and thermal stability are critical design requirements.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers include the 2SD1047 as the complementary NPN pair. Other compatible replacements may include MJ15003 or MJE13008 depending on specific voltage and current margin requirements. Always verify pinout compatibility and thermal resistance values when substituting.