BC847B-AQ

Overview

The BC847B-AQ is an NPN single bipolar junction transistor manufactured by Diotec Semiconductor. It is housed in a surface-mount SOT-23 (TO-236) package and complies with AEC-Q101 automotive qualification standards. The device supports a maximum collector-emitter voltage of 45 V and a continuous collector current of 100 mA. Key electrical characteristics include a transition frequency of 300 MHz, a power dissipation rating of 250 mW, and a DC current gain minimum of 200 at 2 mA and 5 V. The saturation voltage is specified at 600 mV under standard test conditions.

Feature Summary

• Automotive-grade reliability certified to AEC-Q101 standards for robust performance in demanding environments.
• High-frequency operation capability enabled by a 300 MHz transition frequency suitable for signal processing.
• Compact surface-mount packaging designed for automated assembly and space-constrained circuit boards.

Applications

• General-purpose switching circuits in automotive electronic control units
• Signal amplification in consumer electronics and industrial equipment
• Driver stages for low-power loads in battery-operated devices

Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm AEC-Q101 compliance status. Ensure the ordering part number matches the required gain group and package variant. Cross-reference datasheet revisions to validate electrical parameters against current production batches. Confirm RoHS and REACH compliance requirements with the supplier prior to procurement.

Selection Notes

Select this component when automotive qualification is mandatory for the target application. The SOT-23 package offers a balance between thermal performance and board space efficiency. Consider the 300 MHz bandwidth for high-speed switching needs. Verify that the 100 mA current rating meets the load requirements without exceeding the 250 mW power dissipation limit under operating conditions.

Part Context

This component belongs to the BC847 series of general-purpose NPN transistors produced by Diotec Semiconductor. The series provides various configurations including single and dual transistors in different packages. The BC847B-AQ variant specifically targets the automotive market with enhanced reliability standards while maintaining compatibility with standard BJT design practices.

Replacement Considerations

BC847S is listed as a parameter-equivalent alternative within the same manufacturer portfolio.