Electronics Forum: pcb voids in holes[0] (Page 1 of 5)

Solder voids in PTH

Electronics Forum | Wed Feb 20 09:29:19 EST 2008 | mun4o

ni, I had similar problem too.I bake PCB in SW mashine - about 8h ,T=90 C.Problem is in the base material of PCB - there are moisture in the material.After my complaint to PCB factory , they change material and the problem disappear.

Solder voids in PTH

Electronics Forum | Thu Feb 21 04:41:37 EST 2008 | mun4o

hi,Toni, we use only FR4.Some of PCB we order in China and Taiwan.With these PCBs we can't any problem.Other PCB we order here in Bulgaria.The problems with voids start last year - we have voids only in PCBs from Bulgarian factory.The process is sam

Solder voids in PTH

Electronics Forum | Sat Aug 18 11:23:10 EDT 2007 | Learn From U

Hi All, Via X-rays, we found solder voids appear on PTH location, especially on Dimm connectors area. We think this should be related to PCB issue as we found solder unable to fill up the PTH hole during bare board testing at wave soldering machi

Solder voids in PTH

Electronics Forum | Wed May 06 04:31:42 EDT 2009 | radzi

We have prob Solder voids for Connector, Micro D. We used HMP solder wire and pcb thickness is 0.093".

Solder voids in PTH

Electronics Forum | Wed Feb 20 09:05:38 EST 2008 | tonyamenson

We had a similar problem with lead-free through-hole components. We baked those baords to remove the residual moisture and everything went to 100% pass - defect was gone. Couldnt hurt to try a sample run while you decide if the PCB holes need to be

voids in solder

Electronics Forum | Tue Mar 06 14:10:52 EST 2001 | CAL

Are the voids in the balls of a BGA? Are you verifying this through x-ray if they are? some voids depending on size and location are some what accepted. Solder paste type? Solder paste date code? Humidity high? PCB's been stored in a truck trailer?

voids in solder

Electronics Forum | Fri Mar 02 08:52:20 EST 2001 | markkrmp

Are your voids looking like blow holes also? Is this only occurring on the solder joints of the Thru Hole components and Via's? Or does this happen on SMD pads? My experience is that we have seen this but only with some of our older PCB's which are

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Tue Jan 21 16:28:02 EST 2003 | tony_sauve

Sorry I didn't close this one off last year... We had some failure analysis done on these PCB's ( 3D x-ray,microsectioning,SEM) and the results definitively proved that there was some contamination @ the base of the uvia's that had the voiding. It ap

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Tue Nov 20 12:48:40 EST 2001 | tony_sauve

We recently experienced a problem w/voids (up to 65%) in uBGA solder joints. The only joints that have the problem correlated to pads which had blind 0.006" via's in them. The via's only extend down 2 layers, of the 18. 21 BGA's on the PCB, only expe

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Thu Nov 22 12:56:12 EST 2001 | tony_sauve

Thanks for the comments & suggestions. Here's some info garnered from a telecon w/the PCB Fab house: -the blind via's extend from layer 2-17...this was a revelation. The info from our customer was that the via's only extended down 2 layers. Did I men

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