Electronics Forum: balling (Page 271 of 297)

Re: Mydata placment reliability

Electronics Forum | Tue Jul 07 15:51:08 EDT 1998 | Joe Herz

| | Any Comment's about mydata placment reliability (repeatablity) on all types of components. | | we have trouble quantifying just how good it is. | | Is it as good as Mydata Claim ?? | | Please help | We have 4 Mydatas running at this time. | No

Re: STENCILS

Electronics Forum | Wed Jul 01 03:05:56 EDT 1998 | Jon Gruett

| WHAT SHOULD THE RATIO BE OF STENCIL APERATURE TO PAD TO GET GOOD QUALITY RESULTS. BY THAT I MEAN, A MINIMM OF SOLDER BALLS, AND LITTLE TO NO BRIDGING, SHORTS, ETC.. | RIGHT NOW WE ARE USING A 1:1 RATIO, BUT ARE INVESTIGATING REDUCING THE APERATU

Re: STENCILS

Electronics Forum | Mon Jun 29 13:51:29 EDT 1998 | Russ Miculich

| WHAT SHOULD THE RATIO BE OF STENCIL APERATURE TO PAD TO GET GOOD QUALITY RESULTS. BY THAT I MEAN, A MINIMM OF SOLDER BALLS, AND LITTLE TO NO BRIDGING, SHORTS, ETC.. | RIGHT NOW WE ARE USING A 1:1 RATIO, BUT ARE INVESTIGATING REDUCING THE APERATU

Re: STENCILS

Electronics Forum | Mon Jun 29 13:50:48 EDT 1998 | Russ Miculich

| WHAT SHOULD THE RATIO BE OF STENCIL APERATURE TO PAD TO GET GOOD QUALITY RESULTS. BY THAT I MEAN, A MINIMM OF SOLDER BALLS, AND LITTLE TO NO BRIDGING, SHORTS, ETC.. | RIGHT NOW WE ARE USING A 1:1 RATIO, BUT ARE INVESTIGATING REDUCING THE APERATU

Re: Pallet problems

Electronics Forum | Fri May 08 16:30:59 EDT 1998 | Chrys

| I am running boards with gold fingers on a pallet for | masking purposes. The pallets worked fine for a while | but know the gold fingers are getting solder on them. We | have tried everythin: new pallets, cleaning the pallet | and board to be s

Re: Pallet problems

Electronics Forum | Tue May 19 08:48:05 EDT 1998 | Aric Parr

| | I am running boards with gold fingers on a pallet for | | masking purposes. The pallets worked fine for a while | | but know the gold fingers are getting solder on them. We | | have tried everythin: new pallets, cleaning the pallet | | and boa

Re: Micro Vias in Pads

Electronics Forum | Wed Mar 25 16:36:10 EST 1998 | Steve Joy

We have successfully put .016" vias in .030" pads. There is no drain off with .030" solder balls, since the actual volume in the .002" depression is low. We did notice random bubbles where, apparently, the solder reflowed and trapped the air in the

Re: Micro Vias in Pads

Electronics Forum | Wed Mar 25 19:41:01 EST 1998 | Earl Moon

| We have successfully put .016" vias in .030" pads. | There is no drain off with .030" solder balls, since | the actual volume in the .002" depression is low. | We did notice random bubbles where, apparently, the | solder reflowed and trapped the a

Re: Entek coating

Electronics Forum | Tue Mar 10 21:40:27 EST 1998 | Carl mitchell

| I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles mak

Possible to temporarily store mounted but not soldered PCB's?

Electronics Forum | Wed Sep 05 08:50:04 EDT 2001 | davef

No arument with others comments about moisture, but taking a different tact, consider that the volitle elements of the solder paste disppear as a function of the amount of time the paste is out of the container. [Maybe as a function of solder paste


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