Gull wing SMD LITEON optocoupler do I center the pads to match the dip hole centers?

Mar 22, 2021 Last reply: 5 years ago 10 Replies

There's a LITEON optocoupler that I want to use and it just says "SMD" as package. I found out it was gull wing, so when a package isn't given and just referred as SMD, chances are they are gull wing?



I have a DIP there now in the art. If I place pads for a gull wing, do I center the pads to match the dip hole centers? or should I offset somewhat? thanks


Don't they publish a drawing?

Cheers

Phil Hobbs

pick and place question -- let's say you're looking at component side of board. The IC is vertical and pin 1 is to the left, so that is zero degrees. If it's rotated to the right (pin1 up) is that ?

90 or 270?

Mathematicians rotate CCW. Microsoft rotates CW.

Navigators rotate CW from due north as well.

Cheers

Phil Hobbs

EEs go ccw from due east. East is real.

I take it you are so lazy you married a pregnant woman? That's about the same level.

Ugh, there's apparently no standard. My old Philips machine would take +90 and -90. My new(er) Quad/Samsung wants +90 and 270, and barfs on any minus signs in the input data.

Jon

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