BC857S-TPQ2

Overview

The BC857S-TPQ2 is a dual PNP small-signal bipolar junction transistor manufactured by Micro Commercial Components. It integrates two internally isolated transistors within a single SOT-363 surface-mount package, ensuring good electrical matching between the devices. The component utilizes silicon epitaxial die construction and is designed for switching and audio frequency amplifier applications. Key electrical specifications include a maximum collector-emitter voltage of 45 V, a continuous collector current rating of 200 mA, and a total power dissipation of 300 mW. The device features a DC current gain range from 125 to 630 and a transition frequency of 200 MHz, operating within a temperature range of -55°C to +150°C.

Feature Summary

• Dual configuration with galvanic isolation between internal transistors
• High DC current gain suitable for amplification tasks
• Low collector-emitter saturation voltage for efficient switching
• Lead-free finish compliant with RoHS standards

Applications

• Audio frequency input stages
• General-purpose driver circuits
• Small-signal switching applications

Procurement Notes

Verify the specific suffix Q2 against official MCC documentation to confirm packaging details and compliance status. Ensure the ordering information matches the required reel or cut tape format. Cross-reference the datasheet revision date to validate technical parameters before integration into production designs.

Selection Notes

Select this component when a matched pair of PNP transistors is required in a compact footprint. The SOT-363 package offers space efficiency compared to discrete solutions. Consider the 45V breakdown voltage and 200mA current limits to ensure operation within safe boundaries for the intended circuit load.

Part Context

This part belongs to the BC857S series of dual PNP transistors produced by Micro Commercial Components. It serves as a surface-mount alternative to through-hole dual transistor packages, facilitating automated assembly. The product line emphasizes high gain and low saturation characteristics for signal processing roles.

Replacement Considerations

Compatible substitutes include the BC857BSHE3-TP and generic equivalents like the BC857S from other manufacturers. Verify pinout compatibility and thermal resistance values when transitioning between different supplier packages.