Electronics Forum | Mon Jul 22 18:00:49 EDT 2002 | davef
It doesn't appear to be a proprietary mix. Maybe it's 'neither Alpha Metals nor Kester WILL [want to] supply it.' It's interesting. A lot of the discussion of a solder replacement for 63/37 has centered on high temperature alloys. In real life,
Electronics Forum | Thu Jul 25 20:47:13 EDT 2002 | Dreamsniper
Thanks for that info... I found out that MPM has UP2000 HiE VP with price lower than DEK Horizon but just a bit higher or let's say relatively the same as DEK ELA...I find it hard to decide which among the 2 based on our budget capability. My budget
Electronics Forum | Tue Jul 30 08:38:55 EDT 2002 | dasal
Truthfully, there are pro's and con's for both technologies. (put cost of ownership aside for one moment) Nitrogen won't dry humidified components as rapidly as a desiccant dry box. I'm talking about a self regenerating dry box that uses molecular s
Electronics Forum | Fri Aug 16 18:23:48 EDT 2002 | kenbliss
Hi Dave Interesting points. If I understand you correctly 1. about 2% of part numbers have a moisture problem 2. Packaging frequently comes in with expired dates on them. This seems hard to believe you would accept them. 3. To really solve the
Electronics Forum | Thu Sep 12 11:50:58 EDT 2002 | stepheno
http://www.jedec.org/download/search/jstd020b.pdf http://www.jedec.org/download/search/jstd033a.pdf The above links are for JEDEC standards regarding moisture sensitivity. SMT magazine has an article a few months ago regarding a company that saved
Electronics Forum | Mon Aug 19 11:13:18 EDT 2002 | ksfacinelli
I would like to understand what different options people are using to place low volume / odd form parts. I am very familiar with the tweezers / vacuum pen method however this can be less than desirable. I am looking into a manual pick and place to
Electronics Forum | Wed Aug 21 18:13:21 EDT 2002 | johnlee
Kevin, There are a number of custom integrated systems that perform automated insertion of "odd" components. These system use either a robot or cantilevered X,Y,Z Cartesian motion systems. Our systems have accepted standard and custom component feede
Electronics Forum | Sun Sep 15 15:08:00 EDT 2002 | jersbo
My 2 cents... Screen printing may very well have a leg up on deciding SMT defects... however if you pay attention to your stencil (aperture size ratio etc..) and inspect your prints... I believe its a much lesser number... (paste MFG also plays a ro
Electronics Forum | Tue Sep 24 12:49:43 EDT 2002 | dragonslayr
Aperture reduction @ 5 mils thickness is your best bet. It may take several attempts to get just the right paste volume. What aperture reduction was specified to the stencil house for these specific LEDS? or was the stencil blindly produced using a
Electronics Forum | Wed Oct 09 19:08:37 EDT 2002 | russ
AJ, I have bought and used 2 DRS24's in the past. It is a good machine. (I don't think that I will bring up the fact that a certain package that I had kept shorting so I sent them a couple to help with the profile and all of them came back shorted
