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The BC859CW-QX is a PNP general-purpose bipolar junction transistor manufactured by Nexperia. It is housed in an SOT-323 (SC-70) surface-mount package. Key electrical ratings include a maximum collector current of 100 mA, a collector-emitter voltage of 30 V, and a collector-base voltage of 30 V. The device features a low saturation voltage of 300 mV and a power dissipation capability of 200 mW. It operates within a temperature range of -65 °C to +150 °C and has a gain-bandwidth product of 100 MHz.
Verify the specific suffix 'QX' against official Nexperia documentation to confirm if it denotes a distinct packaging variant or tape-and-reel specification compared to standard suffixes like '135'. Ensure the component meets AEC-Q101 automotive qualification requirements if intended for such environments. Cross-reference the part number with the manufacturer's latest datasheet to validate all electrical parameters before integration.
Select this component for designs requiring a compact PNP transistor with moderate current handling capabilities. The SOT-323 package is ideal for space-constrained printed circuit boards. Consider the 30 V voltage rating and 100 mA current limit when designing load interfaces. Verify thermal management needs given the 200 mW power dissipation limit in small packages.
This part belongs to the Nexperia BC859 series of general-purpose transistors. It serves as the PNP complement to NPN devices like the BC849C. The series is designed for low-voltage, low-current applications in consumer and industrial electronics. The QX suffix typically indicates specific manufacturing or packaging details within the Nexperia portfolio.
Official substitutes include the BC859CW,135. Verify pinout compatibility and electrical parameter equivalence before substitution.