BC817-40HE3-TP

Overview

The BC817-40HE3-TP is a single NPN silicon bipolar junction transistor manufactured by Micro Commercial Components. It operates with a maximum collector-emitter voltage of 45 V and a collector-base voltage of 50 V, while sustaining an emitter-base voltage of 5 V. The device supports a continuous DC collector current of 500 mA with a power dissipation rating of 200 mW. Key electrical characteristics include a transition frequency of 100 MHz and a DC current gain ranging from 100 to 600 at 100 mA. It functions within a temperature range of -55°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 demanding environments.
• Optimized low saturation voltage characteristics to minimize power loss during switching operations.
• High DC current gain consistency ensuring stable amplification across varying operating conditions.

Applications

• General-purpose signal switching and amplification circuits
• Low-side driver applications for loads up to 500 mA
• Automotive electronic control modules requiring qualified discrete components

Procurement Notes

Verify the complete part number including the suffix against official manufacturer documentation to ensure correct voltage rating and package configuration. Confirm that the specific revision matches the required AEC-Q101 qualification status. Cross-reference the datasheet specifications for thermal resistance and pinout compatibility before integration into the design.

Selection Notes

Select this component when a single NPN transistor with 45V breakdown voltage and 500mA current capacity is required. Ensure the application demands a SOT-323-3 surface mount package. Verify that the 200mW power dissipation limit aligns with the thermal management strategy of the target circuit design.

Part Context

This component belongs to the BC817 series of general-purpose NPN transistors produced by Micro Commercial Components. The series offers various voltage ratings and packaging options to suit different electronic design requirements. The HE3 designation indicates specific manufacturing attributes related to environmental compliance and lead-free processing standards defined by the manufacturer.

Replacement Considerations

Direct substitutes include other manufacturers' BC817-40 variants such as those from Diotec or Nexperia, provided they match the SOT-323-3 package and 45V rating. Verify equivalent hFE ranges and saturation voltages to maintain circuit performance integrity.