Electronics Forum | Thu Mar 18 17:18:22 EST 1999 | Earl Moon
| | Hi folks, | | | | I am looking for inputs on a long-standing problem encountered in our shop: Bottom-side parts (passives) falling off in the Wave...where the only remnants of the part is a flattened glue dot of proper diameter and volume, and
Electronics Forum | Thu Mar 18 20:08:34 EST 1999 | Steve Gregory
Are you suggesting there may be some chemical incompatibility between paste/flux chemistries and the glue being used - thus intefering with the glue's ability to bond properly? I've only heard of this possibility, but never experienced it. Justin, St
Electronics Forum | Fri Mar 19 05:08:24 EST 1999 | Vinesh Gandhi
Hey Marc, I am not sure about the kind of process you are following. Is it Gluing+paste printing on the bottom side or just gluing on the bottom side and paste printing on the top side. The relationship which I could think of between Bottom side
Electronics Forum | Sat Mar 20 00:33:28 EST 1999 | Mike C
| We are having a small number (~2%) of our boards pass our manufacturing diagnostics, fail once they reach the customer, fail when they get back to us and then start working again after handling them for a short time. We have eliminated a lot of it
Electronics Forum | Mon Mar 15 16:07:32 EST 1999 | Earl Moon
| | After rmoving a BGA (plastic)to correct unexplained shorts | | I installed another BGA using flux only. | | Checking on an X Ray machine and found two shorts. | | | | can anyone give a good explenation ? | | | | Thanks | | | | Ron | | | Ron,
Electronics Forum | Fri Feb 26 10:33:17 EST 1999 | Dave F
Cunli: I think the phrases are worded accurately and don't think rewording them would change the situation. Other options to consider are: 1 Make the old thread current, after someone makes a new posting 2 Just make the new message a new thread, th
Electronics Forum | Wed Mar 03 12:01:08 EST 1999 | Dave F
| I'm trying to get a feel for what the industry is doing with regards to collecting assembly defect data in the SMT/PWA process. Is it sampling or 100%? What are the points within the process where critical assembly defect data is collected. We run
Electronics Forum | Mon Feb 22 20:45:04 EST 1999 | Dave F
| I need some help to see if anyone knows of a vendor that makes a permanent marker that is in the Houston area that can write on a PCB the size of a grain of rice using white permanent ink...That's the amount of space we have to write our serial num
Electronics Forum | Tue Feb 23 15:10:34 EST 1999 | michael nguyen
| | I need some help to see if anyone knows of a vendor that makes a permanent marker that is in the Houston area that can write on a PCB the size of a grain of rice using white permanent ink...That's the amount of space we have to write our serial n
Electronics Forum | Tue Feb 23 17:00:48 EST 1999 | Dave F
| | | I need some help to see if anyone knows of a vendor that makes a permanent marker that is in the Houston area that can write on a PCB the size of a grain of rice using white permanent ink...That's the amount of space we have to write our serial
