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| Date: | Wed, 14 Mar 2018 11:56:06 +0000 |
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Carl,
Hoping I haven't missed any of the answers mentioning that, you can always use wave soldering pallets that would mask any SMT, exposing only TH pins. Of course TH to SMT clearances need to be observed in design, but pallets are a very mainstream wave soldering solution and I've used tons of them.
Check https://ascenteceng.com/pcba-tooling/ some years ago they even had a clearance calculator on-line, but my old link is broken.
Best regards,
Ioan
-----Message d'origine-----
De : TechNet [mailto:[log in to unmask]] De la part de Carl Van Wormer
Envoyé : March 12, 2018 5:23 PM
À : [log in to unmask]
Objet : [TN] Wave soldering with SMT parts on bottom of board
Our new version PC board has a few bottom-side mounted capacitors that were not on our previous design. Both designs are low-quantity builds of about 100 per year. Our assembly house says they can’t run the board through their solder wave because of these parts and is planning to charge a significant fee to hand-solder the 200+ pins for the connectors. I thought there was some sort of mask that could be placed over the bottom side parts, like the pink stuff they add to avoid filling the plated holes for mounting screws. Are there any good methods that I should research to help them run our boards through the solder wave?
Also, I tried to find the TechNet archive to search for answers, but I was unable to use the search function. Is there a help file on searching the TechNet archive?
Thanks,
Carl
Carl B. Van Wormer, P.E., AE7GD
Senior Hardware Engineer
Cipher Engineering LLC
21195 NW Evergreen Pkwy Ste 209
Hillsboro, OR 97124-7167
503-617-7447x303
[log in to unmask]<mailto:[log in to unmask]> http://cipherengineering.com<http://cipherengineering.com/>
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