BC817-40FSW-7

Overview

The BC817-40FSW-7 is a single NPN small-signal transistor manufactured by Diodes Incorporated. It operates with a collector-emitter voltage of 45V and supports a continuous collector current of 500mA. The device utilizes a U-DFN1412-3/SWP (Type A) package, measuring 1.4mm x 1.2mm with a low profile height of 0.6mm. Electrical characteristics include a DC current gain range of 250 to 600 at 100mA, a transition frequency of 100MHz, and a maximum power dissipation of 500mW on standard FR4 PCBs.

Feature Summary

• Low-profile 0.6mm-high package designed for thin applications
• Sidewall tin plating enables wettable flanks for Automatic Optical Inspection (AOI)
• High current capability with 500mA continuous collector current rating
• Totally lead-free and fully RoHS compliant green device

Applications

• General-purpose switching
• Amplification circuits

Procurement Notes

Verify the specific ordering suffix matches the required reel size and tape width configuration. Confirm that the U-DFN1412-3/SWP package dimensions align with the target PCB footprint layout. Ensure compliance with JEDEC standards and moisture sensitivity level requirements for the intended manufacturing process.

Selection Notes

Select this component when space constraints require a low-profile surface-mount solution. The sidewall tin plating feature facilitates reliable AOI inspection during assembly. Verify that the 45V breakdown voltage and 500mA current capacity meet the circuit's operational demands under varying thermal conditions.

Part Context

This part belongs to the BC817 series of NPN general-purpose transistors. It shares functional similarities with other variants in the family but is distinguished by its specific DFN1412-3/SWP package and high-gain classification. The device is designed for modern electronics requiring compact footprints and robust solder joint visibility.

Replacement Considerations

BC817-40FSWQ-7

FAQ

What is the maximum power dissipation of the BC817-40FSW-7?

The maximum power dissipation is 500 mW when mounted on a minimum recommended pad layout on a single-sided 1.6mm FR4 PCB.

Does the package support Automatic Optical Inspection?

Yes, the U-DFN1412-3/SWP package features sidewall tin plating specifically designed to provide wettable flanks for AOI verification.

What is the DC current gain range for this variant?

The DC current gain (hFE) ranges from a minimum of 250 to a maximum of 600, measured at VCE = 1V and IC = 100mA.