BC857C-TP-HF

Overview

The BC857C-TP-HF is a PNP bipolar junction transistor manufactured by Micro Commercial Components. It operates with a maximum collector-emitter voltage of 45 V and a collector-base voltage of 50 V. The device supports a continuous collector current of 100 mA and dissipates up to 310 mW of power. Key electrical characteristics include a minimum DC current gain (hFE) of 420 at 2 mA and 5 V, and a transition frequency of 100 MHz. It functions within a temperature range of -55°C to +150°C and utilizes an SOT-23-3 surface-mount package.

Feature Summary

• High DC current gain for efficient signal amplification
• Wide operating temperature range suitable for diverse environments
• Compact surface-mount packaging for automated assembly

Applications

• General-purpose switching circuits
• Small-signal amplification stages
• Driver circuits for low-power loads

Procurement Notes

Verify the specific suffix against official MCC documentation to confirm RoHS compliance and halogen-free status. Ensure the ordering code matches the exact package type and gain bin required for the design. Cross-reference datasheet revisions to confirm pinout consistency before finalizing procurement specifications.

Selection Notes

Select this component when a high-gain PNP transistor is required in a compact SOT-23 form factor. Consider the 45 V breakdown voltage and 100 mA current limits relative to circuit demands. Evaluate thermal management needs based on the 310 mW power dissipation rating under expected operating conditions.

Part Context

This part belongs to the BC857 series of small-signal PNP transistors from Micro Commercial Components. It shares the fundamental architecture with variants like BC857A and BC857B, differentiated primarily by hFE gain bins. The device is designed for general-purpose electronic applications requiring reliable performance in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include BC857A-TP-HF and BC857B-TP-HF from the same manufacturer, provided gain requirements are met. Other manufacturers offer equivalent parts such as 2N3906 or BC857 equivalents, but verify pinout compatibility and absolute maximum ratings carefully.