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The BC857W-QX is a PNP general-purpose transistor from the Nexperia BC847xW-Q series, designed for automotive applications. It operates with a maximum collector-emitter voltage of 45 V and a continuous collector current of 100 mA. The device utilizes an SOT323 (SC-70) surface-mount package with dimensions of 2 x 1.25 x 0.95 mm. It features a maximum junction temperature of 150 °C and complies with AEC-Q101 qualification standards.
Verify the specific suffix 'QX' against official Nexperia documentation to confirm it denotes the SOT323_115 tape and reel packaging configuration. Ensure the component meets the required AEC-Q101 grade for your target automotive application before finalizing procurement specifications.
Select this component when a PNP complement to the BC847W-Q NPN transistor is required in an SC-70 footprint. It is suitable for designs needing AEC-Q101 compliance within a compact SOT323 package, offering a direct alternative to standard general-purpose transistors in constrained automotive PCB layouts.
This part belongs to the BC847xW-Q family of automotive-qualified general-purpose transistors. It serves as the PNP counterpart to the BC847W-Q series, sharing identical physical dimensions and thermal characteristics while providing complementary polarity functionality for differential or push-pull circuit configurations.
The BC857AW-QX, BC857BW-QX, and BC857CW-QX are confirmed substitutes within the same automotive-qualified series, differing only in DC current gain selection groups.