Electronics Forum | Wed Oct 04 14:46:46 EDT 2000 | Kal. Chak.
Hi folks, What are the differences between Epoxy resin(ER)conformal coating and adhesive stacking/bonding material? My PSA/PRA (Post solder/reflow assembly)bracket assembly process got some ER adhesive encroachment on pads/solderjoints. I have chec
Electronics Forum | Wed Sep 13 07:17:32 EDT 2000 | Paul Gerits
Dear Sir, It is possible depending on the exact application. At the moment only way to go direct from die to waffle or PCB is with Hover Davies direct die feeders on Philips EMT (ACM, advanced component mounter), Universal and Siemens machines. This
Electronics Forum | Thu May 18 13:08:33 EDT 2000 | Wolfgang Busko
Chris, one question, which standard allows to put it in the drawings/dokumention? As I said in my old IPC-D-275 it says "no". Did it change with the new edition ? Referring to J-STD-001 in this case seems to me like "I followed only the orders and do
Electronics Forum | Mon Jan 15 20:47:26 EST 2001 | davef
On the "Main Conference" page there's a series of columns. Column 1 contains notices and adverts Column 2 contains unselectable icons that looks something like a stack of pages Column 3 contains circles the turns red when selected Column 4 contains t
Electronics Forum | Thu Mar 22 15:44:50 EST 2001 | pteerink
I have a board with QFP240 plastic package exhibiting the same characteristics. Minimum heel fillet that doesn't change with stencil mods, paste change, profile change etc ( I am working to class 2, though, so my pass spec, although they are not pret
Electronics Forum | Thu Mar 22 15:45:20 EST 2001 | pteerink
I have a board with QFP240 plastic package exhibiting the same characteristics. Minimum heel fillet that doesn't change with stencil mods, paste change, profile change etc ( I am working to class 2, though, so mine pass spec, although they are not pr
Electronics Forum | Mon Apr 23 11:06:32 EDT 2001 | pteerink
I had a couple of Mydata's for a number of years. I loved the software, it was easy to use, easy to program, easy to learn and very flexible. It's design is suited more for "batch" style production, rather than inline production. The placement is rel
Electronics Forum | Mon Jul 09 14:03:39 EDT 2001 | ohboy
Make sure you're getting a good roll from your squeegies. Poly will "scoop", leaving less, nickel will add a little extra. A slightly shorter blade height out of the holders will help promote a good roll- this helps push the paste into the thru h
Electronics Forum | Sat Jul 21 09:46:41 EDT 2001 | davef
I was reading something in the paper this morning where the police have found that having a witness look at six pictures of suspects laid-out on a table [the six pack method in their parlance] is more error prone than just looking through the stack o
Electronics Forum | Sat Jan 24 00:13:57 EST 1998 | Scott
| What is the lifetime for a typical solder paste ? | How long can boards be stacked waiting before the paste goes off ? Lifetime and tack time depends on: - Manufacturer - Flux/mixture - Environmental conditions Typical lifetime is dependent on stor
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