Electronics Forum | Sat May 06 23:44:24 EDT 2006 | mika
We get away with edge clearance of 5 mm on the bottom side and 3 mm on the top side. This is mainly because of our BTU-reflow ovens. The rest of our assy-line can handle 3 mm edge clearence. Assuming that a double sided pcba is running secondary sid
Electronics Forum | Fri Jun 02 09:53:11 EDT 2006 | ratsalad
I used 1' of McMaster part # 8821K6 (0.110" thick). It is rated to 600F. I believe I put four layers over my profiler but I'd recommend starting with two. If you need more you can add it. Make the sock good and tight because the fabric seems to h
Electronics Forum | Mon Jun 26 12:29:54 EDT 2006 | CL
JMills, The white clip that I refer to is for the Agilis feeder system. The actual clips (feeders) are color coded. As far as the timing on the TM8's, I received a proceedure from Mydata several years ago but had reverted to submitting the feeder ba
Electronics Forum | Fri Jul 07 13:11:39 EDT 2006 | fredericksr
The recommended feeder for 0402s and especially 0201s is the green feeder with a 3.7mm spec. We use greens for 0402/0201, white for 0603, yellow for 0805s, and reds for tantalums. They work well, but sometimes you seem to get difficult tape. I hav
Electronics Forum | Fri Jun 23 01:19:19 EDT 2006 | Ola
Yes, leadfree paste is dispensable, but there is a completely diffrent paste than one will use at the stencil printer in the line. This is a very tricky one to deal with. We use xxx lf-free paste in the line, but that paste will Not at all work at th
Electronics Forum | Thu Jun 29 04:26:52 EDT 2006 | Rob
Hi Rick, I've always had excellent service from all of them - else I wouldn't recommend them - but we all have our own experiences. I'm 99% sure who you are referring to as you're on the other side of the pond, but as i've said I've always had good
Electronics Forum | Fri Jun 30 09:03:09 EDT 2006 | Frank
The manufacterer of our machine recommends 99.999%. At their presentation before we purchased the machine they showed an example of using different purity levels. When they whiched the supply to 99.99 and then to 99.95 you can visibly see the diffe
Electronics Forum | Fri Jul 07 07:25:47 EDT 2006 | Piet Brandsma
Hi Rob, That's indeed quite expensive. I had contact with someone offering a second hand and refurbished DIMA pick place machine: http://www.exmore.com/nl/electronics/secondhanddetail33.aspx The guy offered the machine for 14000 euro's. In this c
Electronics Forum | Mon Aug 14 12:08:35 EDT 2006 | cuculi54986@yahoo.com
I agree with using the homeplate design on chips. Some Pb-free solder paste manufacturers recommend 1:1 apertures. This, in my experience, is not a good idea with any of the SAC305 pastes I've tried. I've been using the same stencil design guideli
Electronics Forum | Mon Aug 07 09:04:09 EDT 2006 | molos21
Hi everyone, I am starting to use the lead free process and I had a few wetting problems (solder did not reach top side) at the wave soldering process once the pcb had passed our smt line (one heat pass). From what I understand, I have had a problem
