BC556C

Single Bipolar Transistors Overview

The BC556C is a PNP silicon epitaxial planar transistor manufactured by Diotec Semiconductor, designed for switching and audio frequency amplifier applications. It features a maximum collector-emitter voltage of 65 V and a continuous collector current of 100 mA. The device operates within a junction temperature range of -55°C to +150°C and dissipates up to 500 mW of power. It belongs to the BC556 series, subdivided into gain groups A, B, and C, with the 'C' suffix indicating high DC current gain characteristics.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration suitable for general-purpose switching and amplification tasks
• High DC current gain grouping designated by the 'C' suffix for precise biasing control
• Robust thermal performance supporting operation up to 150°C junction temperature

Single Bipolar Transistors Applications

• General-purpose signal switching circuits
• Audio frequency (AF) amplifier stages
• Low-power logic interface applications

Single Bipolar Transistors Procurement Notes

Verify the specific gain bin (A, B, or C) required for your design, as the BC556 series offers distinct hFE ranges. Confirm the package variant, such as TO-92BK or standard TO-92, matches your PCB footprint requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference absolute maximum ratings against your circuit's peak voltage and current stresses to prevent device failure during operation.

Single Bipolar Transistors Selection Notes

Select the BC556C when high current gain is necessary to minimize base drive requirements in amplifier designs. Compare its 65V breakdown voltage against lower-voltage alternatives like the BC558 or BC559 if higher headroom is needed. Consider the TO-92 through-hole package for prototyping or applications requiring manual assembly. Evaluate thermal management needs given the 500mW power dissipation limit in enclosed environments.

Single Bipolar Transistors Part Context

The BC556C is part of the broader BC556/BC557/BC558/BC559 family of PNP transistors produced by Diotec Semiconductor. This family shares similar physical packages but varies in voltage ratings and gain groupings. The BC556 specifically targets applications requiring higher voltage tolerance compared to the BC558 or BC559 variants, while maintaining comparable current handling capabilities for small-signal operations.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include other manufacturers' BC556C equivalents. Within the Diotec portfolio, verify if BC556B or BC556A meet gain specifications, though their hFE ranges differ. For lower voltage applications, BC558C or BC559C may serve as functional replacements if the 30V rating suffices.