Electronics Forum | Mon Feb 18 03:40:04 EST 2008 | akareti
Hi everybody, I found a defect varistor 0603 Tombstone and poor welting when we use component that terminal is Silver palladium (Ag/ Pd) with Leaded solder paste (63/37). Then we change alternative component that terminal is Ni/ Sn the result not fou
Electronics Forum | Thu Feb 21 03:25:58 EST 2008 | jlawson
I have seen smt chip varistors with Pd/Ag teminations that had poor wetting in terms of good fillet in LF (sac305) soldering. We found that the solder tended to be attracted to the plating on the part and off the actual pad (silver Immersion). This c
Electronics Forum | Tue Feb 19 09:26:54 EST 2008 | jdengler
The low solids flux that is commonly called no-clean can affect some circuits. We are building a PCB that measures pico amps. The customer required that it be cleaned. We would rather used the low solids and eliminate a step. The customer had
Electronics Forum | Fri Feb 22 16:49:44 EST 2008 | pms
Steve, Trying to keep wave solder from coming up the via' from the bottom and adhering to the via's and via's pads during wave. We use WS flux thru-out the whole process. I have been concerned about possible flux intrapment in the via's. That's a g
Electronics Forum | Wed Feb 27 04:23:13 EST 2008 | fujillews
Hi It is best to fit the VGA camera for 0201 parts make sure your software is high enough..above v1.33 although you can place without but no so good. 0.4mm tapered nozzles are best. 0201 feeder the locator base in increased by aprox 0.3mm and the ind
Electronics Forum | Mon Mar 03 23:39:04 EST 2008 | gdzuber
There are different options for de-paneling routers. There are two basic types, in-line and stand-alone. Do you need in-line for high volume? The stand-alone systems have manual insertion trays, one or two trays. Also, after de-paneling or laser ma
Electronics Forum | Thu Feb 28 14:50:02 EST 2008 | tonyamenson
Let me clarify we throw out used paste after a week not the whole jar. Jars get used up every other day or so. We don't really have a procedure for used paste on the do's and don'ts so I'm in the process of creating one to avoid people adding flux t
Electronics Forum | Wed Mar 05 16:29:56 EST 2008 | raincity1
You are playing with fire; you evaluate and specify paste for your products/SMT line, when you start adding tacky flux or whatever to your paste you don't really know what you are then dealing with - it osn't what you evaluated. We use solder paste f
Electronics Forum | Fri Feb 29 16:42:34 EST 2008 | vikkaraja
Hello again, Has anyone experience any problem with their vision system on the DEK machine. Machine had been running fine for at least one year without any major problem until this week. Machine's response is very slow especially the vision system. M
Electronics Forum | Sun Mar 02 16:01:28 EST 2008 | rfematt
Thanks for your information. What model year is your Heller 1700?. It seems that you can find same model (1700EXL) from 1999 to 2008 but there should be some differences between them which I don't know. Just want to make sure you are not running a ne
