Help identifying chip marked 311 / EZ619

facoang · ‎2026-03-04

hello, I don't reconiaze the PN number of attached picture

AScha.3 · ‎2026-03-04

Its an LM311 , by ST:

LM311D/DT SO-8 Tube or Tape & reel marking : 311

If you feel a post has answered your question, please click "Accept as Solution".

TDK · ‎2026-03-04

311

EZ619

Looks like the magic smoke left. I can't find anything about it. Maybe it's a custom part for a manufacturer. What is this from?

If you feel a post has answered your question, please click "Accept as Solution".

AScha.3 · ‎2026-03-04

Its an LM311 , by ST:

LM311D/DT SO-8 Tube or Tape & reel marking : 311

If you feel a post has answered your question, please click "Accept as Solution".