BC817-40WHE3-TP

Overview

The BC817-40WHE3-TP is an NPN silicon general-purpose bipolar junction transistor manufactured by Micro Commercial Components. It operates with a collector-emitter voltage of 45 V and a collector-base voltage of 50 V, while maintaining a maximum emitter-base voltage of 5 V. The device supports a continuous DC collector current of 500 mA and dissipates up to 200 mW of power. Key electrical characteristics include a gain-bandwidth product of 100 MHz and a collector-emitter saturation voltage of 700 mV. It functions within a temperature range of -55 C to +150 C and holds AEC-Q101 qualification.

Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• RoHS compliant construction without halogenated substances
• Designed for surface-mount assembly in compact SOT-323-3 packages

Applications

• Automotive electronic circuits requiring qualified components
• General-purpose signal amplification tasks
• High-speed switching applications in consumer electronics

Procurement Notes

Verify the specific suffix HE3 confirms RoHS compliance and halogen-free status during procurement. Confirm the package designation matches SOT-323-3 requirements for your PCB layout. Ensure the ordering quantity aligns with reel or cut tape availability constraints provided by the distributor. Cross-reference the manufacturer part number against official datasheets to prevent substitution errors.

Selection Notes

Select this component when automotive-grade reliability is required alongside standard NPN switching capabilities. The 500 mA current rating suits moderate load applications within small form factors. Consider the 200 mW power dissipation limit for thermal management in dense circuit designs. Verify that the 100 MHz transition frequency meets the speed requirements of the target application circuit.

Part Context

This part belongs to the BC817 series of single NPN transistors produced by Micro Commercial Components. The series offers various voltage ratings and packaging options for different market segments. The HE3 suffix indicates environmental compliance features specific to MCC's product line. This variant targets applications needing robust performance in constrained physical spaces.

Replacement Considerations

Direct substitutes must match the SOT-323-3 package and 45 V/500 mA specifications. Verify equivalent AEC-Q101 qualification if automotive use is intended. Check pinout compatibility before swapping with other NPN transistors in the same family.