I have no idea if this part is discontinued, but assume it is because the HMI it is in was probably built 20 years ago. It is a surface mount diode with the ST logo on line 1, "EX" on line 2, and C151 on line 3. It is D29 on the attached photo. Thank

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Best answer by Tesla DeLorean

ST DIODE EX

SM6T39A

Guru

ST DIODE EX

SM6T39A

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Guru

Tips, Buy me a coffee, or three.. PayPal VenmoUp vote any posts that you find helpful, it shows what's working..

Technical Moderator

The SM6T39A has not been discontinued, so I moved that to Analogue and Audio.

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