BC857BS-QX

Overview

The BC857BS-QX is a dual PNP bipolar junction transistor (BJT) manufactured by Nexperia. It is housed in a SOT363 (SC-88) surface-mount package with six pins. The device features a maximum collector-emitter voltage (VCEO) of 45 V and a continuous collector current of -100 mA. Key electrical parameters include a collector-base voltage (VCBO) of 50 V, an emitter-base voltage (VEBO) of 5 V, and a power dissipation (Pd) of 300 mW. The component has a transition frequency (fT) of 175 MHz and a minimum DC current gain (hFE) of 200. It operates within a temperature range of -65 °C to +150 °C and holds AEC-Q101 automotive qualification.

Feature Summary

• Automotive-grade reliability certified under the AEC-Q101 standard for robust performance in vehicle electronics.
• Dual PNP configuration in a compact SC-88 package designed to minimize printed circuit board area.
• Low collector capacitance and closely matched current gain characteristics between transistors.

Applications

• General-purpose switching and amplification circuits in automotive systems.
• Replacement for discrete components to reduce bill of materials and assembly costs.
• Signal processing applications requiring low mutual interference between channels.

Procurement Notes

Verify that the specific suffix '-QX' corresponds to the required AEC-Q101 automotive qualification status as defined in official Nexperia documentation. Confirm the package type is SOT363 (SC-88) and ensure the ordering code matches the exact pinout and specifications required for the target design. Cross-reference with authorized distributors to validate authenticity and supply chain integrity.

Selection Notes

Select this component when a dual PNP transistor with automotive certification is required in a small form factor. It serves as the complement to the NPN/NPN BC847BS-QX. Ensure the design accommodates the 300 mW power dissipation limit and the 45 V voltage rating. Consider the 175 MHz bandwidth for high-speed switching needs compared to lower-frequency alternatives.

Part Context

This part belongs to the BC857 series of small-signal PNP transistors from Nexperia. It is specifically the dual-transistor variant packaged in SOT363, distinct from single-transistor versions like the BC857B or BC857AW. The 'Q' suffix indicates compliance with automotive quality standards, differentiating it from standard commercial grade parts.

Replacement Considerations

The BC857BS is the direct functional complement to the BC847BS-QX. For single-channel replacements, consider the BC857B or BC857AW, though these lack the dual configuration and may differ in package dimensions and thermal characteristics.

FAQ

What is the maximum operating junction temperature for the BC857BS-QX?

The maximum operating temperature is +150 °C.

Does the BC857BS-QX meet automotive industry standards?

Yes, the component is qualified according to the AEC-Q101 standard for stress test qualification of integrated circuits.

What is the physical package type for this component?

It is housed in a SOT363 (also known as SC-88) surface-mount plastic package.