BC857BLP-7B

Overview

The BC857BLP-7B is a PNP small-signal transistor manufactured by Diodes Incorporated, housed in an X1-DFN1006-3 package. It features a collector-emitter voltage (VCEO) of -45 V and a collector-base voltage (VCBO) of -50 V. The device supports a maximum continuous collector current (IC) of -100 mA with a peak pulse current of -200 mA. Power dissipation reaches 1000 mW when the exposed collector pad is mounted on a 25mm x 25mm 2oz copper heatsink. DC current gain (hFE) ranges from 220 to 475 at -2.0 mA. The transition frequency (fT) is 100 MHz.

Feature Summary

• Utilizes an ultra-small X1-DFN1006-3 package with a footprint of 0.60 mm², which is significantly smaller than standard SOT-23 packages.
• Features a low profile height of 0.5 mm to minimize off-board component height.
• Constructed using epitaxial die technology for high reliability and performance.
• Compliant with RoHS standards and designated as a halogen- and antimony-free green device.

Applications

• General-purpose signal amplification
• Switching applications requiring compact surface-mount solutions
• Automotive electronics utilizing AEC-Q qualified components

Procurement Notes

Verify the specific ordering suffix '-7B' to confirm the 10,000-unit reel packaging configuration. Ensure that the application design accounts for the thermal resistance values associated with the exposed collector pad mounting requirements specified in the datasheet. Confirm compliance with relevant automotive quality standards if deploying in regulated environments.

Selection Notes

Select this component when space constraints require a footprint significantly smaller than traditional SOT-23 packages while maintaining high power dissipation capabilities. The BC857BLP-7B is suitable for designs needing a low-profile solution with robust thermal management through the exposed pad. Consider the complementary NPN type, BC847BLP, for push-pull configurations.

Part Context

This part belongs to the BC857BLP series of PNP small-signal transistors designed for surface-mount applications. It serves as a compact alternative to larger packages like SOT-23, offering similar electrical characteristics within a reduced physical envelope. The series is engineered for high reliability and is compatible with standard automated assembly processes.

Replacement Considerations

The complementary NPN transistor BC847BLP is officially documented as the paired device for this series. For direct replacement, verify pinout compatibility and ensure the substitute meets the required -45 V voltage rating and -100 mA current specifications.

FAQ

What is the difference between the BC857BLP-7 and BC857BLP-7B?

The primary difference lies in the packing quantity. The BC857BLP-7 comes in reels of 3,000 units, whereas the BC857BLP-7B is packaged in reels of 10,000 units. Both share identical electrical characteristics and marking codes.

How does the package size compare to SOT-23?

The X1-DFN1006-3 package has a footprint of 0.60 mm², which is approximately 13 times smaller than the standard SOT-23 package footprint.

Is this component qualified for automotive applications?

Yes, the BC857BLP series is qualified to JEDEC standards for high reliability. For specific automotive applications requiring AEC-Q100/101/104/200 qualification and PPAP capability, customers should refer to the related automotive grade parts with the Q-suffix.