Electronics Forum: spill and solder (Page 8 of 104)

Cleaning Wave solder fingers and chain

Electronics Forum | Tue Aug 26 13:44:14 EDT 2008 | cgray

The chain and fingers for our Wave solder is getting a large amount of residue from the flux (high dissolved solids) we are using. Any recommendations for products that can clean polymerized flux.

Selective soldering pallets and solder balls

Electronics Forum | Mon Dec 16 16:35:55 EST 2002 | Jim Ferris

Randy, Steve & all, Can you guys point me in the right direction when it come to using selective wave soldering...I am trying to get in-depth information on the Pro's & Con's of having our supplier use this process for our PWA's. (I can see there ar

warped boards and cracked solder joints

Electronics Forum | Mon Oct 29 20:19:44 EST 2001 | davef

DON'T do it!!! The two problems you'll have are: 1 Poor manufacturing process control, resulting in weak solder connections. 2 Weak solder connections are stressed, when the board is straightened upon installation in the "box". There's several hits

Selective soldering pallets and solder balls

Electronics Forum | Mon Dec 02 16:19:11 EST 2002 | slthomas

Unfortunately it's nc or we'd be worrying about this on the fly. Non-contact is defintely and issue....this is an 18"x9" board with 1500 bottom side SMT parts that are scattered among the through-hole and vice-versa. We're currently using 7 hold-

Selective soldering pallets and solder balls

Electronics Forum | Tue Dec 17 13:42:04 EST 2002 | robf

There are a few emerging technologies that have been growing in popularity for the past few years. Pin through paste, press fit connectors and selective soldering machines seem to be displacing custom fixtures. Most of the mixed technology boards o

kapton dots and liquid solder mask

Electronics Forum | Tue Aug 09 13:25:24 EDT 2005 | pr

From what I can gather, the annular rings are used for grounding when these boards are put in housings. A screw goes through the hole and is torqued down. If there is excess solder on the annular ring, the screw doesn't seat properly. The pallets cov

kapton dots and liquid solder mask

Electronics Forum | Wed Aug 10 11:57:16 EDT 2005 | pr

Is the peelable mask (put on by the boardhouse) flat on the surface of the pcb? If so can you tell me the material name, so maybe I can find a picture? We have to print adhesive on the board, so the mask has to be flat. That is why Kapton from the b

Re: mask finish and solder balling

Electronics Forum | Sat Feb 20 09:56:22 EST 1999 | Tufty

We are in the process of getting into no-clean paste and fluxes. One important issue in this is sodler balling. I have heard some people say that having a matte finish would help in having lesser solder balls and that the solder balls would not b

PPM rate for wave and selective solder

Electronics Forum | Wed Jul 30 16:42:24 EDT 2003 | davef

here's a start http://www.thepdfshop.co.uk/ppm/asp/Monthly.asp

Wave solder pallets: lead and lead-free process

Electronics Forum | Wed Jul 27 16:27:57 EDT 2005 | GS

It may be you should look for higher TG of Durapol Rgds GS

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