Electronics Forum: solder joint surface texture (Page 3 of 50)

Re: Voids in micro-BGA solder joint

Electronics Forum | Thu Feb 19 12:56:29 EST 1998 | Earl Moon

| I'd like someone gives me a tip for elemating of voids | in the mico BGA solder joint and the method of inspection | of them, very exactly. Voids in excess of 20% by each solder ball volume is cause for rejection. Causes are improperly managed proc

Dye Penetrant Inspection of solder joint

Electronics Forum | Fri Jun 27 22:33:16 EDT 2003 | Ben

HI, I'm doing a dye penetrant and peel test of non-function BGA solder joints to locate the fracture surface. After applying dye, I found the dye ink just accumulate at the solder mask edge and spread everywhere after I peeled off the package. THis i

Palladium Silver surface finish

Electronics Forum | Tue Aug 24 14:49:58 EDT 2004 | jamyboy

Hi, I am trying to assemble a LTCC component > with Pd/Ag surface finish on to Sn/Pb/Ag solder > and Sn/Ag/Cu solder. I am passing it through a > reflow. I have observed poor wettability at the > solder-pad joint. Does anyone have information

Re: Solder surface tension

Electronics Forum | Sat Oct 09 04:17:21 EDT 1999 | Brian

| Can anyone tell me the formula/method to determine | the amount of weight that solder's surface tension can support. | (ie: Maximum weight of components soldered onto a bottom side | of a board during a top side reflow on a Paste/Paste process). |

Re: Solder surface tension

Electronics Forum | Sat Oct 09 07:33:23 EDT 1999 | Dave F

| | Can anyone tell me the formula/method to determine | | the amount of weight that solder's surface tension can support. | | (ie: Maximum weight of components soldered onto a bottom side | | of a board during a top side reflow on a Paste/Paste proc

Re: Solder surface tension

Electronics Forum | Sat Oct 09 09:07:48 EDT 1999 | Brian

| | | Can anyone tell me the formula/method to determine | | | the amount of weight that solder's surface tension can support. | | | (ie: Maximum weight of components soldered onto a bottom side | | | of a board during a top side reflow on a Paste/Pa

Re: Solder surface tension

Electronics Forum | Sat Oct 09 09:18:21 EDT 1999 | Dave F

| | | | Can anyone tell me the formula/method to determine | | | | the amount of weight that solder's surface tension can support. | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | of a board during a top side reflow on a

Re: Alternate surface finishes

Electronics Forum | Fri Jun 18 13:48:37 EDT 1999 | Earl Moon

| We currently use HASL on all of our boards and I would like to move to something else. I have sampled some boards with Entek OSP and I loved it, the problem is we have plated mounting holes on just about every board we make. Does anyone have info

Re: Solder surface tension

Electronics Forum | Tue Oct 12 05:09:13 EDT 1999 | Brian

| | | | | | | Can anyone tell me the formula/method to determine | | | | | | | the amount of weight that solder's surface tension can support. | | | | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | | | | of a board during

Re: Solder surface tension

Electronics Forum | Sat Oct 09 10:30:24 EDT 1999 | bix

| | | | | Can anyone tell me the formula/method to determine | | | | | the amount of weight that solder's surface tension can support. | | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | | of a board during a top side refl


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