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MegaSTE/TT PSU (Phihong PSM-5341) opto coupler orientation

Posted: 21 Oct 2024 13:07
by EdOX
Hi everyone

I just received the recap kit for my TT and I am puzzled with the opto coupler installation


The original one has a mark (circle) on the pin 1 (anode)
IMG_9562.jpg
while the one from the kit does not have any mark:
IMG_9560.jpg
I would like to be sure which pin is pin 1 on the new opto in order to install it correctly

Thank you

Re: MegaSTE/TT PSU (Phihong PSM-5341) opto coupler orientation

Posted: 22 Oct 2024 08:50
by Steve
Checking the datasheet:
https://www.vishay.com/docs/83607/cny17f.pdf

On page 7 of the datasheet, it looks like it's the top left of the chamfered edge.

Screenshot From 2024-10-22 08-48-44.png