Electronics Forum: solder and mask and surface and energy (Page 1 of 3)

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

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: Solder mask materials and equitements wanted

Electronics Forum | Sat Aug 29 08:43:35 EDT 1998 | Dave F

Hi, Friends, Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! Have a good day Xingsheng Xingsheng: Consider the follo

Re: Green coating and through-hole plating

Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F

Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon

Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pw

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F

Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: htt

Re: BGA and Gold Boards

Electronics Forum | Fri Jun 19 10:03:46 EDT 1998 | Earl Moon

Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. Mike Mike, We and ind

BGA ball and PCB pad

Electronics Forum | Fri Feb 20 13:01:26 EST 2004 | Jay

First, it depends on the alloy composition of the solder. As you might know, eutectic Sn/Pb solder has the lowest melting point among available conventional solder systems. (except those based on Sn-In and Sn-Bi systems.) For example, 63Sn/37Pb - 183

seperation of soldermask and pcb

Electronics Forum | Tue Mar 25 13:55:05 EDT 2014 | horchak

Ok lets put it this way. If the PCB house used a high quality mask and properly applied it to a properly cleaned surface and properly cured it, then as Dave stated above there are only two things that can destroy it. Excessive heat and overly aggress

Heat guns and component damage

Electronics Forum | Wed Feb 01 08:12:04 EST 2006 | Chunks

OK, this is easy. You say HIGH fall out, so I can assume 25 or 50%? If so, run 10 without the heat gun and 10 with. This should show you if the heat gun process is the cause or not. If the relay is a surface mount, hand solder them on. If it's a

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Surface Mount Technology Association (SMTA)
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