BC856BS-QX

Overview

The BC856BS-QX is a PNP general-purpose transistor manufactured by Nexperia USA Inc. It is housed in an SOT-323 (SC-70) surface-mount plastic package. The device features a maximum collector current of 100 mA and a collector-emitter voltage rating of 65 V. Key electrical parameters include a collector-base voltage of 80 V, an emitter-base voltage of 5 V, and a power dissipation limit of 200 mW. The transition frequency is specified at 100 MHz, with a DC current gain ranging from 220 to 475 at 2 mA and 5 V. It operates within a temperature range of -65 °C to +150 °C.

Feature Summary

• Low current handling capability suitable for small-signal applications
• Low voltage operation designed for general-purpose switching
• Automotive qualification ensuring reliability under harsh conditions

Applications

• General-purpose switching circuits
• Signal amplification stages
• Automotive electronic control modules

Procurement Notes

Verify the specific suffix 'QX' against official Nexperia documentation to confirm packaging details and automotive compliance status. Ensure the component matches the required SOT-323 footprint and pinout configuration for your PCB layout. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement orders.

Selection Notes

Select this component when a low-power PNP transistor with automotive qualification is required. Compare the 100 mA current limit and 65 V voltage rating against circuit demands. Consider the SOT-323 package size constraints and thermal dissipation requirements relative to alternative packages like SOT-23 or SC-88.

Part Context

This part belongs to the BC856 series of PNP general-purpose transistors. It serves as the matched complement to NPN devices such as the BC846 series. The QX suffix typically indicates automotive-grade qualification and specific reel packaging, distinguishing it from standard commercial variants within the same electrical family.

Replacement Considerations

Direct substitutes include other BC856B variants in SOT-323 packages. Verify that replacement parts maintain the same AEC-Q101 qualification if automotive use is required. Check for identical pin configurations and thermal characteristics to ensure compatibility.