BC817K-40H-QR

Overview

The BC817K-40H-Q is an NPN general-purpose transistor manufactured by Nexperia USA Inc. It operates with a collector-emitter voltage of 45 V and a continuous collector current of 500 mA, supporting peak currents up to 1 A. The device features a DC current gain (hFE) range of 250 to 600 at IC = 100 mA and VCE = 1 V. Packaged in the SOT23 (TO-236AB) surface-mount format, it offers high power dissipation capabilities suitable for elevated temperatures up to 175 °C.

Feature Summary

• Qualified according to AEC-Q101 standards for automotive applications
• High-temperature operation capability up to 175 °C junction temperature
• Three distinct current gain selections available within the series

Applications

• General-purpose switching circuits
• Amplification stages
• Automotive electronic systems

Procurement Notes

Verify that the specific order includes the 'Q' suffix to confirm AEC-Q101 qualification status. Ensure the marking code matches %HF for the BC817K-40H-Q variant. Confirm package type is SOT23. Check manufacturing site codes associated with the placeholder in the marking scheme.

Selection Notes

Select this component when high thermal stability is required for automotive environments. The BC817K-40H-Q provides a higher minimum DC current gain compared to lower gain variants like the BC817K-16H-Q. Use this part for designs requiring reliable performance at junction temperatures reaching 175 °C.

Part Context

This device belongs to the BC817KH-Q series of NPN general-purpose transistors. It shares the same SOT23 package and basic electrical limits as other members of the family but is distinguished by its specific hFE binning and automotive qualification. The PNP complement for this series is the BC807-40H-Q.

Replacement Considerations

BC807-40H-Q serves as the complementary PNP device within the same qualified automotive series.