Electronics Forum: via fill hole (Page 1 of 78)

Re: via hole plugging

Electronics Forum | Thu May 20 07:53:55 EDT 1999 | Chris Nuttall

| | We care currently running into problems during our plug via process: | | At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.Thi

conductive fill via

Electronics Forum | Mon Nov 11 02:28:27 EST 2002 | Melvin

I want to make a double-sided PCB. the process include conductive filling via for RF guarding. Does anyone can tell me where I can do it?

conductive fill via

Electronics Forum | Mon Nov 11 11:28:32 EST 2002 | davef

Sand is not a great conductor, compared to copper. Never heard of using the stuff on RF boards. Our board fabricator uses Dupont CP100, now CP101, [or something like that cuse who's going to check?] when plugging via on cheap boards. Your board fa

via capping

Electronics Forum | Mon Jan 11 14:48:44 EST 2010 | davef

SR1000 is commonly used for tenting. Search the fine SMTnet Archives on : tenting Someone gave us this note. We have lost their name. It seems to be good advice. If Liquid Photo Image (LPI) solder mask is required, do not tent via holes. Tenting

via hole plugging

Electronics Forum | Wed May 19 11:50:32 EDT 1999 | Chris Nuttall

We care currently running into problems during our plug via process: At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.This is cau

Re: via hole plugging

Electronics Forum | Wed May 19 13:13:20 EDT 1999 | Dave F

| We care currently running into problems during our plug via process: | At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.This is

solder pop out from via hole at secondary reflow

Electronics Forum | Mon Jul 08 14:41:17 EDT 2002 | davef

See what happens when you take a couple of days off? Your theory sounds reasonable, but someone else could make an equally valid case that you are blasting your solder plug across the room with the force of the expansion of entapped air between th

Dealing with BGA solder ball in via hole

Electronics Forum | Thu Mar 24 15:58:52 EDT 2011 | davef

Just build-up the boards and ship them. Be sure to inform your customer about the problem that you have with their design and ask that the via be filled and plated over to prevent the problem in the production runs.

Dealing with BGA solder ball in via hole

Electronics Forum | Thu Mar 24 16:06:34 EDT 2011 | nkinar

Thanks for the reply, davef. Due to prototyping time constraints, I've been asked by the engineers if I could do something on the SMT line to salvage this prototype PCB. Could I do anything to connect the pad or fill the via? Much of the board h

via as test point

Electronics Forum | Mon Feb 26 20:02:42 EST 2001 | davef

First, I don�t understand why your board fabricator can�t do a good job plugging your vias. Additionally, when you consider that they forgot to plug the first batch of boards, it makes me wonder if they are desirable as a supplier. Generally, we us

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