OPA211: I cannot see a marking for pin 1

Henrik Rosenø

Prodigy 170 points

Part Number: OPA211

I cannot see which end of the OPA211 SO-8 chip is pin 1 and 8, and which end is pin 4 and 5? See attached photo.

10 months ago

0 Clemens Ladisch 10 months ago

Guru 284810 points

0 Chris Featherstone 10 months ago

TI__Mastermind 23520 points

Hey Henrik,

I agree with Clemens answer. Let us know if we can be of further assistance.

Best Regards,

Chris Featherstone

0 Henrik Rosenø 10 months ago in reply to Chris Featherstone

Prodigy 170 points

OK. There seems to be an almost invisible printed dot and a slightly bevel edge, which both correspond to each other and to the direction of the almost invisible letters... But in that case the only really visible symbol is next to pin 8. So you are not making it easy. ;-)

0 Henrik Rosenø 10 months ago in reply to Henrik Rosenø

Prodigy 170 points

Now I have added the pin-1-dot that would have been nice to have. ;-)

It's incredible what the camera in an old cheap smartphone can do under good light conditions.

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OPA211: I cannot see a marking for pin 1