BC817K-25-QR

Overview

The Nexperia BC817K-25-QR is an NPN general-purpose bipolar junction transistor (BJT) designed for surface-mount applications. It operates with a maximum collector-emitter voltage of 45 V and supports a continuous DC collector current of 500 mA. The device features a minimum DC current gain (hFE) ranging from 160 to 400, ensuring high amplification capability. Packaged in the compact SOT-23 (TO-236AB) plastic housing, it offers a power dissipation rating of 350 mW at ambient temperature. The component is qualified under the AEC-Q101 automotive standard, supporting operation within a temperature range of -55°C to +150°C.

Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• High current gain selection for efficient switching
• Compact SOT-23 surface-mount package design

Applications

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

Procurement Notes

Verify the specific suffix 'QR' against official Nexperia documentation to confirm packaging details and exact manufacturing lot specifications. Ensure the procurement channel provides valid traceability records required for automotive-grade components. Cross-reference the part number with the latest datasheet revision to confirm compliance with RoHS directives and material declarations before finalizing orders.

Selection Notes

Select this component when designing circuits requiring robust NPN switching capabilities within strict space constraints. The AEC-Q101 qualification makes it suitable for automotive environments where long-term reliability is critical. Compare the hFE range against circuit requirements to ensure adequate drive margins. Consider thermal management strategies given the 350 mW dissipation limit in the small SOT-23 package during continuous operation.

Part Context

This part belongs to the BC817 series of NPN general-purpose transistors manufactured by Nexperia. The series is characterized by its high current handling and low saturation voltage. The 'K' designation typically indicates a specific binning or packaging variant within the broader product family, while the '-25' denotes the current gain classification. This series serves as a complement to the BC807 PNP counterparts.

Replacement Considerations

Direct substitutes include other AEC-Q101 qualified NPN transistors in SOT-23 packages with similar electrical ratings. Verify pinout compatibility and thermal characteristics when replacing. Check manufacturer datasheets for equivalent parts offering matching hFE ranges and voltage ratings to ensure seamless integration without circuit redesign.