Datasheet for the FDD8780, a 542 KB PDF; the extra number in the name appears to be a document reference. FDD-prefixed parts are Fairchild power MOSFETs in DPAK packages, commonly used in power stages on motherboards. The sheet gives pinout, gate threshold, on-resistance and maximum ratings, which you need when testing a shorted transistor or choosing a substitute. Check the package marking on the board and make sure any replacement has equal or better ratings.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ic_mosfet_pdf_datasheets. Enginerys does not host this file.
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The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @ic_mosfet_pdf_datasheets | 13 Oct 2021 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 29 Apr 2025 | Open file on RM Schematics |
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