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water wash small but mechanically sensitive PCBA

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#74126

water wash small but mechanically sensitive PCBA | 24 June, 2015

I am struggling with a water wash process for a very small (1"x1") PCB. It has components that are very esily damaged by contact. I'm stuck with wash. I know, I know, but no-clean isn't an option.

We put the board in s compartmentalized wash basked but it still gets thrown around a bit. Any off-the-shelf options out there for securing a small board in wash?

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CPI

#74276

water wash small but mechanically sensitive PCBA | 24 July, 2015

Id say get them panelized to help lock it down in a basket or under a screen, we actually started making our own baskets out of screen material, tight mesh and not as rough. the other option would be to get something to hold them off the wash conv holding the boards by the edge. as cheapo as this sounds we have used binder clips to help hold boards off the mesh and to hold them in place,, that's of course if you have room on the board to grab it.

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#74321

water wash small but mechanically sensitive PCBA | 3 August, 2015

Panelization is the way to go. Once it is panelized you can get them in a panel the options open up. Custom wash fixturing would be the way I would go if you have a tooling budget. The guys at Pentagon EMS have always been able to put together some nice tooling when I needed it.

I once had an 88-up panel that each board was the size of a nickle. It can be done.

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#74334

water wash small but mechanically sensitive PCBA | 5 August, 2015

Find someone that has a 3D Printer and create a top and bottom jig that will hold them down. This has worked for our production needs in many ways and has saved us thousands instead having a metal shop create one.

www.avcomsmt.com

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