Electronics Forum | Mon Apr 12 09:09:25 EDT 2004 | russ
If they are reflowing pbfree balls to bare PCB pads they are getting that component very hot tpo melt the balls and get them to wet to the pads! I would not recommend this process at all for hightemp solder balls, for 63/37 this process is fine. As
Electronics Forum | Mon Dec 06 14:44:41 EST 2021 | dwl
1 to 1 stencil aperture to pad should be fine on the gull leads, and yield 100% coverage with leaded solder. The thermal pad is going to be a challenge though, if you truly need 100% coverage. There will be out gassing from the flux and this will nee
Electronics Forum | Wed Jan 28 19:39:08 EST 1998 | Steve Gregory
| | What is the lifetime for a typical solder paste ? | | How long can boards be stacked waiting before the paste goes off ? | Lifetime and tack time depends on: | - Manufacturer | - Flux/mixture | - Environmental conditions | Typical lifetime is dep
Electronics Forum | Mon Feb 23 23:42:11 EST 1998 | Mike
| Can anyone give me any info on the effective removal of BGA's? I need to be able to take a variety of BGA's off boards quickly without creating pad damage. I am not yet concerned about the re-attach process. Depending on your rework station,Useing
Electronics Forum | Mon Mar 30 16:29:31 EST 1998 | Tony Arteaga
| | Can anyone give me any info on the effective removal of BGA's? I need to be able to take a variety of BGA's off boards quickly without creating pad damage. I am not yet concerned about the re-attach process. | Depending on your rework station,| U
Electronics Forum | Tue Aug 17 11:45:05 EDT 2010 | kjs123p
The best way that I have found is to use homeplating on my stencils.
Electronics Forum | Wed Aug 25 09:53:40 EDT 1999 | lwk
| | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | Most common reason is uneven heating where
Electronics Forum | Wed Aug 25 15:47:25 EDT 1999 | JohnW
| | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | Most common reason is uneven hea
Electronics Forum | Wed Aug 25 16:42:32 EDT 1999 | Dave
| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is
Electronics Forum | Wed Aug 25 21:44:03 EDT 1999 | Jason Tomlinson
| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is
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