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This must be a diode, but which?

Does anyone have a clue?

I can't find anything with such a marking.

enter image description here

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  • \$\begingroup\$ C8 or C84 is likely the part number, with the trailing digit(s) meaning something else. Possibly similar to the BV-SMCJ85CA. \$\endgroup\$
    – rdtsc
    Jul 31, 2023 at 11:36

1 Answer 1

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The markings match with a Brightking SMBJ22A TVS diode. "LX" is the actual marking and seems to be damaged in your picture.

enter image description here

(Source: lcsc.com)

enter image description here

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  • \$\begingroup\$ Excellent. Thanks! The damage you suspect is a residue from conformal coating. \$\endgroup\$
    – stowoda
    Jul 31, 2023 at 18:59

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