Electronics Forum: solder mask surface energy (Page 7 of 35)

SMD pad definition may cause solder joint cracking under extreme fatigue conditions.

Electronics Forum | Thu Feb 02 09:07:28 EST 2023 | charles_nguyen

Two types of land patterns used for surface mount pads are non-solder mask defined or NSMD pads and solder mask defined or SMD pads.Each type has its own advantages and disadvantages. There is a statement that SMD pad type may introduce stress concen

How to prevent BGA issue of SMT solder resist when fabricate PCBA

Electronics Forum | Thu Jun 08 01:46:00 EDT 2023 | camilleyang3

To prevent BGA (Ball Grid Array) issues related to SMT (Surface Mount Technology) solder resist when fabricating a PCBA (Printed Circuit Board Assembly), you can follow these guidelines: Design considerations: Ensure proper spacing between BGA pads

Re: Solder Resist Solder balls - 'N Surface Energy

Electronics Forum | Wed Dec 23 11:42:46 EST 1998 | Earl Moon

| | Folk's, | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, text

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: Solder Resist Solder balls - 'N Surface Energy

Electronics Forum | Tue Dec 22 17:12:26 EST 1998 | Dave F

| Folk's, | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, texture,

Re: Solder Resist Solder balls - 'N Surface Energy

Electronics Forum | Thu Dec 24 08:44:25 EST 1998 | Earl Moon

| | | | Folk's, | | | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colou

Coating adhesion problems

Electronics Forum | Tue Sep 21 11:39:41 EDT 2004 | pabloquintana

Conformal coat a bare board to determine if there > is there is enough surface free energy from your > solder mask to prevent dewetting. Sorry for my ignorance, but what is "enough surface free energy"? How do I determine that? >* Bake a board

Re: Solder Resist Solder balls - 'N Surface Energy

Electronics Forum | Thu Dec 24 03:49:45 EST 1998 | John Watt

| | | Folk's, | | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour,

Coating adhesion problems

Electronics Forum | Tue Sep 21 11:34:10 EDT 2004 | davef

Several things to check are: * Ask Multicore if their flux res and your conformal coat are compatible. Conformal coats and NC flux res are notorious for having compatibily issues. * Conformal coat a bare board to determine if there is there is enoug


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