Electronics Forum: longer (Page 11 of 116)

Can excessive reflow(longer dwell time) cause open joint?

Electronics Forum | Fri Jul 30 09:59:10 EDT 2004 | Steve

Excessive Time above Liquidus will cause a solder joint to become extremely brittle. Any shock or stress to the joint can lead to a failure.

Rejuvenated solder paste

Electronics Forum | Fri Dec 17 10:24:23 EST 2004 | rlackey

Hi Matt, What printer are you using? you may be able to get an envronmental unit for it to keep the paste cooler & at the right humidity for longer, thus extending it's effective window. Cheers, Rob.

quad 1000 error

Electronics Forum | Sun Jun 26 10:18:03 EDT 2005 | bobpan

Mike no longer is employed by Tyco. Also if i were a betting man......i would bet....that he doesnt know the quad 1000 inner workings toooo well.

Solder bath eruptions

Electronics Forum | Mon Mar 07 08:03:14 EST 2005 | jonathanpaul

Have any of you ever experienced minor eruptions in your solder bath while it is heating up? Our solder bath splashes solder while it's heating. Once the bath is molten, it no longer does. Can anyone suggest a cause?

reflow oven

Electronics Forum | Mon Apr 11 07:46:51 EDT 2005 | mmjm_1099

Make sure you find out that short to longer ovens are both Lead-Free capable. If you want respond here on what they say for future reference for people.

MVT GS1 Support

Electronics Forum | Wed Apr 20 04:28:22 EDT 2005 | Rob

Hi, does anyone know of a company that supports the old MVT GS1 AOI machines? Agilent no longer support these and we are having issues with all 4. Cheers, Rob.

Voiding under BGA's

Electronics Forum | Mon May 09 14:36:49 EDT 2005 | driscolj

We've had similar problems with Indium 6.2 water soluble paste. We reduced our voiding by implementing a longer soak and lower peak temperature.

A.O.I recommendation

Electronics Forum | Fri May 27 09:14:30 EDT 2005 | stepheniii

I found the Mirtec got faster and faster to program the longer we had it. Both from a learning curve point of view and a building the library point of view. And it was reasonably fast to program at the start anyways.

0402

Electronics Forum | Tue Jun 07 14:31:56 EDT 2005 | russ

No max spacing spec. except that it should not be so far away from the other one that it is no longer on the board! IPC 782 shows .5mm spacing for the min.

I'm looking to add to my library...

Electronics Forum | Thu Sep 01 13:25:13 EDT 2005 | slthomas

Thanks, Bob. I was beginning to think that this site no longer had room for a serious discussion or recommendation. I will take your comments into consideration.


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