BC817-40QCZ

Overview

The BC817-40QC is an NPN general-purpose transistor from the Nexperia BC817QC series, housed in a DFN1412D-3 (SOT8009) leadless surface-mounted package. It supports a collector-emitter voltage of 45 V and a continuous collector current of 500 mA, with a peak pulse current capability of 1 A. The device offers a DC current gain range of 250 to 600 at 100 mA. Thermal resistance from junction to ambient is specified at 329 K/W in free air. The component operates within an ambient temperature range of -55 °C to 150 °C and withstands junction temperatures up to 150 °C.

Feature Summary

• High power dissipation capability suitable for thermal management
• Leadless DFN1412D-3 package with side-wettable flanks for improved solder joint inspection
• AEC-Q101 qualified for automotive application reliability

Applications

• General-purpose switching and amplification
• Space-restricted electronic designs

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm availability and packaging details. Confirm that the DFN1412D-3 footprint matches your PCB layout requirements. Ensure compliance with RoHS directives and check for any regional export control classifications before finalizing procurement orders.

Selection Notes

Select this component when a compact, leadless SMD package is required for high-current applications. The BC817-40QC variant provides a higher minimum DC current gain compared to lower-gain family members. Consider the low profile and side-wettable flanks for automated optical inspection compatibility and robust soldering in dense circuit layouts.

Part Context

This part belongs to the BC817QC series, which includes variants with different current gain selections: BC817-16QC, BC817-25QC, and BC817-40QC. All share the same electrical ratings and physical package but differ in hFE ranges. The PNP complement for this series is the BC807-40QC.

Replacement Considerations

Direct replacements include other BC817-40QC units from the same series. Verify pinout compatibility if substituting with legacy packages like SOT-23 or SOT-323, as dimensions and thermal characteristics differ significantly.

FAQ

What is the marking code for the BC817-40QC?

The marking code for the BC817-40QC is 9P.

Is the BC817-40QC suitable for automotive applications?

Yes, the product has been qualified in accordance with the AEC-Q101 standard for discrete semiconductors.

What is the maximum peak collector current?

The maximum peak collector current is 1 A for a single pulse duration of tp ≤ 1 ms.