Electronics Forum: dams (Page 1 of 9)

PCB wave dams

Electronics Forum | Fri Feb 27 16:02:20 EST 2004 | Zaxx

Hi Paul, One way but it slows down the process, is to get fixturing pallets made. You can usually get a universal fixture made for anywhere from $185-225USD. Hopefully this can help. Sincerely, Zack Schmad

PCB wave dams

Electronics Forum | Fri Feb 27 16:04:32 EST 2004 | Zaxx

Paul, I met these guys at APEX http://www.stonemountaintool.com, they were willing to work with us on pricing. Zack

PCB wave dams

Electronics Forum | Fri Feb 27 15:48:13 EST 2004 | pdeuel

Dose anybody know of a method of preventing board sag in the wave process. We have a 2 year old Deltawave. The product we are running is a one sided 10in x 12in panel of 6 PCB's. Pin headers and connectors are near all of the edges. Our current board

Clearence of solder resist from QFP Leads

Electronics Forum | Fri Jan 09 09:43:48 EST 2009 | boardhouse

Hi Simon, The main reason that it would probably be removed would be do to lack of clearance for a soldermask dam from pad to pad. typically if the clearance from pad to pad is under .008 the solder mask dam would be removed. Min recomended dam siz

Who should operate an AOI? operator or Inspector?

Electronics Forum | Thu Nov 17 15:48:08 EST 2005 | Kornholio

Gid Dam Corksockers tried to make me operate AOI but not mah job!

Solder Paste and fine pitch components

Electronics Forum | Wed Sep 18 12:35:56 EDT 2002 | stepheno

Fourth - > back to design of PCB. Are there solder dams of > mask between the pads? If yes, that helps. If > not, pay close attention to stencil aperture > width and be sure that the aperture deposits less > paste by 1-2 mils per pad, centered o

Varistor any experiance in correcting process contamination of.

Electronics Forum | Tue Oct 12 16:38:24 EDT 1999 | Charlie

At present the band-aid fix is using epoxy 'dam' under the part and masking over the part to pervent excessive current leakage conmonent failure. These parts are first going through the reflow oven, where the epoxy dam is used to over come the leakag

BGA Parameter Damming

Electronics Forum | Wed Sep 14 15:42:45 EDT 2011 | nowak18

During temperature cycling we have determined that the conformal coating wicking underneath our BGAs has caused fractures in our solder balls. One proposed solution is to run an RTV dam around the parameter of the BGA to prevent the CC from wicking u

Wave Soldering / Masking PEM Hardware

Electronics Forum | Thu Nov 17 13:26:42 EST 2005 | chunks

yeah, i tried um once and they worked great. gwad dam management wouldnt buy em though.

Bridging Problems

Electronics Forum | Mon Mar 17 22:33:02 EDT 2008 | davef

You say, "We run the exact same product leaded and have very little trouble." Did someone remove the solder mask dams from the boards?

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