Electronics Forum: pull and test and fail (Page 1 of 4)

Can dye and pry test reveal which solder joints fail first?

Electronics Forum | Mon Jul 07 09:47:50 EDT 2008 | davef

Dye & pry test reveals the solder connections that have failed prior to performimng the test.

COB and Plating

Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal

Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process

Cracking Capacitors and Solder Balls

Electronics Forum | Mon Jun 08 14:19:30 EDT 1998 | Gary Simbulan

Earl, et al, Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. First the caps. We still have

PCB Thickness and BLR

Electronics Forum | Mon Jun 03 13:26:32 EDT 2019 | az2019

Hi, I have a general question about the relationship of PCB thickness and BLR testing result. For example, I have QFN6x6 parts mounted on board in 1.2mm, 1.6mm, and 2.4mm thickness. All boards have 6 layers of Cu. Studies show thicker board gives les

Dye and Pry

Electronics Forum | Wed Mar 12 07:33:40 EDT 2008 | callckq

Hi All, One PCBA failed test after went through the Shock Test(Vibration) and suspected to be BGA solder ball crack. We performed dye and pry and found PCB's pad lifted with red mark ink penetrate pad underneath, what does this mean? Can I say the

Material Ageing and Storage

Electronics Forum | Thu Feb 22 04:00:02 EST 2001 | Scott B

We are increasingly being asked to store components for longer and longer periods which we know through experience leads to reduction or total loss of solderability of the parts. 1) What is the industry accepted shelf life of tin/lead plated compone

Flexi boards and uBGA

Electronics Forum | Fri Jul 07 03:27:31 EDT 2006 | dougs

Hi folks, thanks for all the tips. We have run our first batch of these flexi boards now. I had the PCB suppliers make me some 1.6mm FR4 carriers to lay the boards on to carry them through the process. (1 flat & 1 with cutouts for the second side)

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Tue Jun 16 15:00:12 EDT 1998 | Gary Simbulan

There are some common reason for capacitor cracking on my web page if you want to have a look. The document can be downloaded for your reference. | Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Mon Jun 08 14:52:16 EDT 1998 | Gary Simbulan

| Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. | First the caps. We stil

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