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Raspberry Pi cuts product returns by 50% by changing up its pin soldering (arstechnica.com)

submitted 2 days ago by [email protected] to c/[email protected]

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[–] [email protected] 70 points 2 days ago (8 children)

They now use intrusive soldering that solders surface mount and through-hole components at the same time:

The idea behind intrusive soldering, also known as pin-in-paste soldering is simple: solder paste is printed onto or around a through-hole pad, and the through-hole component is passed into reflow with your SMD components. The molten solder paste then fills in the through-hole and attaches the component pin.

[–] [email protected] 46 points 2 days ago (7 children)

I used to work on an SMT line, and pin in paste was the bane of my fucking existence. The parts (mainly connectors) were rarely within tolerance, and a leg or two would consistently miss their holes, if not outright rejected by the inserter.

[–] [email protected] 5 points 2 days ago

How long ago was this? Could the process have become more acurate in the time you've been away from it?

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