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Pick and Place Tolerance for 8-Pin SOIC and PLCC-2 Packages

1315 1 Nov 25.2019, 14:21:01

I designed 2 very small PCB and just got a few copies in the mail from the fab.
One is a light emitter board and one is a light detector board.  In Altium, I positioned the light emitter (in a PLCC-2 package) to align bang-on with the detector (8-pin SOIC).
Starting to solder it by hand wasn't too much trouble, but it could use some improvement. They're both slightly askew, due to my human hands and eyes.  (Note in the picture below that I need to reverse the direction of the LED tomorrow---my goof)

I was wondering how much improvement I could expect if I mass assembled these at a pick-and-place fab? How accurate will the placements be? I've never had anything mass assembled. Would appreciate any comments!

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