Electronics Forum | Sun Jan 29 14:10:14 EST 2006 | gipos
Hi GS, We are contract manufacturer for small series of electronic equipment fully trained for SMT.Making mostly RF with only few QFPs,TSOPs...SMT machine assembly was made by local subcontractor when needed. Recently we acquired two Juki 730 machin
Electronics Forum | Tue Jan 31 14:23:39 EST 2006 | samir
Chunks, For our lead-free eval, we had the same problem with "charred looking" solder paste up the component termination of one of the smaller discretes, coupled with excessive solder balling...this smaller part did see peak temps in the 240 range -
Electronics Forum | Fri Feb 03 16:40:24 EST 2006 | Mike
At my last employer, we ran a number of tests to make a "Hybrid" profile work (same profile Joe lists) . It worked great for everything but BGAs. The problem (6 months ago) was using parts not rated for lead free reflow temps. As the market fills wit
Electronics Forum | Tue Feb 07 05:40:16 EST 2006 | pavel_murtishev
Good day, J-STD-033A: 4.1.2.2 Moisture Sensitivity Levels 5-5a For moisture sensitivity Levels 5 and 5a with floor life exposure not greater than 8 hours, a minimum desiccating period of 10X the exposure time is required to dry the SMD packages en
Electronics Forum | Tue Jan 31 15:15:13 EST 2006 | russ
Heat guns used improperly will definitely damage components. You must have a controlled heat gun that can be set to the max temp you want pb =215C max, Pbfree maybe 240C max. This heat gun must not be able to be adjusted or you must have total trus
Electronics Forum | Tue Jan 31 15:51:04 EST 2006 | russ
Relays huh? I can tell you from previous experience that relays are not a good heat gun candidate. Did you check how long this part can withstand the 240? I do not know what the 4 setting is on a liester but it is probably well in excess of the 24
Electronics Forum | Sun Feb 05 09:49:11 EST 2006 | Cmiller
We have been using ENIG for 8 years as our primary board finish. We have not seen any issues with tenting the vias. We have used a number of suppliers. The ENIG from China does not seem to solder quite as well in general but only had black pad from o
Electronics Forum | Wed Feb 01 10:01:09 EST 2006 | electromek
I was wondering if anyone else is finding cost and delivery time for Soltec parts not acceptable. I would love to get a substitution list going with everyone. I am after a replacement for filter 90006942. We need to replace 3 of these a month and Sol
Electronics Forum | Wed Feb 01 13:46:05 EST 2006 | Chunks
Sounds like a epididymis! It depends on your paste chemistry. You can't just slap any old saponifier in there. Most water based cleaners evaporate the water and you have to remove the dried paste. It's a bit messy, maybe that's why your's is over
Electronics Forum | Thu Feb 02 20:48:07 EST 2006 | ____
I would like to start a new post regarding fuji > NXT machine. What do you think about the machine > as far as the servicing of the machine goes. I am > so used to the older machines such as : CP,IP, > and QP. Those machines at least give you som
