Electronics Forum | Thu Mar 23 10:02:09 EST 2006 | Joe
Check placement pressure. I agree with the "smushing" theory. If you can place the component with less pressure, I'd do that first. A switch to Type three paste is also a good idea, as long as your minimum aperture dimension remains at 0.009" as you
Electronics Forum | Mon Mar 20 09:08:42 EST 2006 | mapell
AR Sounds like dirty chains... couple ways to check... Pull off the drive chain for the conveyor. Place a wrench on the (unload end) drive shaft and spin, if it is a bit tough.. dirty rails. Also look at load end of chains. The chain goes low and w
Electronics Forum | Tue Mar 21 19:34:32 EST 2006 | Tom Smykowski
Omar: I dealt with this so called "hot bar" process also, and you're right; it's neither reliable nor repeatable. The goal was to attach a flex LCD display to another flex circuit. The flex LCD was constructed of resin and conductive silver particl
Electronics Forum | Wed Mar 22 01:24:54 EST 2006 | Joseph
Dear all, Referring technical report from Vitronics Soltec, "Pad lifting, fillet lifting and fillet tearing issues in LF soldering". The use of LF solder alloys today has brought about a recurrence of this crack formation, called fillet tearing. The
Electronics Forum | Thu Mar 23 07:36:42 EST 2006 | Chunks
According to the original article, no. It is formed by the FR4 expanding and then contracting. So cooling it down faster would not help - in theory. We have not gone lead free yet, so take the above with a grain of WML. My question to those that
Electronics Forum | Thu Mar 23 21:35:43 EST 2006 | Wave Master Larry
Eutectic is were the deltas of the oven melt the paste. At least that what the maintenence guy tells me but hes alway gooped up on some goop, so who really nows. No lead is simple. With all the cell phones you guys by nowadays, the gabage heaps ar
Electronics Forum | Fri Mar 24 15:40:23 EST 2006 | Gilligan
Novemer 13, 2001, minutes from the JG-PP Lead-Free Solder project: http://www.jgpp.com/projects/lead_free_soldering/minutes/01novminutes.pdf It seems to me, that although everything was discussed before hand, it wound up being the "Let's do it and
Electronics Forum | Tue Mar 28 15:01:57 EST 2006 | solderiron
Oh no you caught me. I'm a salesperson. "We" refers to the dozen or so customers I have sold this alloy to. We refers to all the data that can be found via the internet. The product is patented by Nihon superior and has proven reliability. Look if y
Electronics Forum | Fri Mar 24 17:04:28 EST 2006 | kevslatvin
We are looking into uprgading our current pick and place machine which is a very entry level machine with a higher class or more production oriented machine. On our current machine change over is fairly slow. I was wanting to know if any users of the
Electronics Forum | Sat Mar 25 07:25:36 EST 2006 | smartasp
Hi There To answer your question 1 minute at the best. We are using 2 Opal XII and have the optional feeder exchange trolleys, which enables us to setup feeders off line and just exchange the trolleys onto the machines. The changeover can be done i
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