Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
Electronics Forum | Wed Jan 17 13:33:23 EST 2007 | slthomas
We're in the process of trying to select a rebuilt, refurbished, or well serviced flexible placer, something that's capable of placing in the neighborhood of 10k and up. We're a high mix low volume shop so easy setups is key. I'd be looking at a MY-9
Electronics Forum | Wed Mar 07 11:36:51 EST 2007 | Frank
Chicago already has a show, ATE, but I have never been to it, so I don't know anything about it. It is my understanding that it is much smaller than APEX, and has much smaller attendance. So is it smaller in size because of the lower attandence, or
Electronics Forum | Mon Feb 05 10:12:32 EST 2007 | slthomas
The use of booties isn't required per se, just considered a standard step necessary to reach the 10,000 target. You also need to vacuum (central vac system, NOT exhausting into the room) daily, mop weekly, have a one piece floor, blah, blah, blah....
Electronics Forum | Wed Jan 24 22:48:59 EST 2007 | frank63
Hello, we are facing some troubles with BGA opens in our production. PCB are both side popolated with BGA. BGA is array of 26*26, with some 6*6 center balls. PCB has 2 reflow processes, 4 pcs of BGA on each side. Now we are partly observing opens
Electronics Forum | Wed Feb 28 12:34:21 EST 2007 | rob_thomas
Every component has a "how to order" paragraph in their data sheet with specific suffixes,letter/digit combinations that reflect each parameter of that part including packaging, lead finish etc. So if you order using the manufacturer p/n you are alm
Electronics Forum | Mon Mar 19 05:51:24 EDT 2007 | pima
Hello I made some test on different oven and problem still occurs. The only progress is that with diffrent thermoprofil ( Ramp to Spike instead of Ramp- Soak- Spike skewed components appears at 1 % of produced parts). With Ramp - Soak-Spike we have p
Electronics Forum | Tue Apr 03 05:46:35 EDT 2007 | chrissieneale
OK - going to set up some measurements so we can see how big this problem is. I've got the following so far... Number of boards pasted per employee per shift Number of hand placed parts per employee per shift Number of people per shift Time pasting
Electronics Forum | Tue Apr 03 13:10:15 EDT 2007 | slthomas
Personally I wouldn't count anything but minutes. You need to know how long it takes to perform each task in order to balance your line. What I'm gathering is that you've got one printer feeding 4 machines, all running different jobs or maybe a pai
Electronics Forum | Fri Apr 06 10:43:57 EDT 2007 | flipit
Hi, Anyone seeing difficulty is soldering MLFs or QFN with lead free solder? I have an MLF with 3 rows of pads on each of the 4 sides of the part and then the large center ground plane in the middle. The part is 20 mil pitch. Had good luck with l
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