BC 817-40 B5003

Single Bipolar Transistors Overview

The BC 817-40 B5003 is a general-purpose NPN bipolar junction transistor manufactured by Infineon Technologies. It is housed in the SOT-23 surface-mount package, designed for low-voltage and high-current applications. Key electrical parameters include a maximum collector-emitter voltage (Vceo) of 45 V and a continuous collector current (Ic) of 500 mA. The device features a DC current gain (hFE) range of 160 to 400, ensuring reliable amplification and switching performance across various operating conditions.

Single Bipolar Transistors Feature Summary

• High current capability suitable for demanding load switching
• Low saturation voltage for efficient power dissipation
• Wide DC current gain selection for consistent amplification

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Linear amplification stages
• Driver circuits for relays and solenoids

Single Bipolar Transistors Procurement Notes

Verify the specific suffix B5003 against official Infineon documentation to confirm tape-and-reel specifications and marking codes. Ensure compatibility with existing PCB footprints and thermal management requirements. Cross-reference datasheet revisions to confirm parameter stability before finalizing component selection for production.

Single Bipolar Transistors Selection Notes

Select this component when a compact NPN transistor with 45 V blocking capability and 500 mA drive capacity is required. The SOT-23 package offers space efficiency for dense layouts. Consider the hFE binning if precise gain control is necessary for analog applications. Evaluate thermal constraints based on the 330 mW power dissipation rating.

Single Bipolar Transistors Part Context

This part belongs to the BC817 family of general-purpose NPN transistors. The BC817 series is widely used in consumer electronics and industrial controls due to its balance of performance and cost. The -40 variant specifically denotes the 45 V voltage rating, distinguishing it from lower-voltage versions within the same product line.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include Nexperia BC817-40 and Diotec BC817-40. Verify pinout alignment and absolute maximum ratings match the original design requirements before substitution.