Electronics Forum | Tue Jul 13 16:50:20 EDT 1999 | Boca
| We are looking to automate the paste printing portion of our SMT process. We are looking at used equipment from DEK and MPM from 1994 onward.(DEK 260 & 265 MPM AP20 & AP27) Does anyone have some feedback or concerns with any of these machines? Does
Electronics Forum | Mon Jul 12 09:13:08 EDT 1999 | Mark Charlton
I need some advice concerning reflow of a BGA-292. Since I am not ready to change my entire process to no-clean, I decided to place the lone BGA-292 on a proto run using our BGA re-work station. The pcb is a moderately dense, single-sided, 8-layer
Electronics Forum | Thu Jul 15 08:57:49 EDT 1999 | Dave F
snip | Dave, believe it or not it's the only thing these loupot's do..crop n form ! scary but then they are built like the preverbial brick shit house..don't know if you guy's are familiar with the phrase...but you'll only ever need to buy 1..cos it
Electronics Forum | Thu Jul 15 14:40:43 EDT 1999 | JohnW
| | snip | | | Dave, believe it or not it's the only thing these loupot's do..crop n form ! scary but then they are built like the preverbial brick shit house..don't know if you guy's are familiar with the phrase...but you'll only ever need to buy
Electronics Forum | Fri Jul 09 19:35:05 EDT 1999 | Earl Moon
| Hi Carol- | What you are asking for can be done. Variables you must account for include the paste viscosity, dispensing head speed, dispenser height relative to board surface, and needle size. You can use most any semi-automated system such as Ca
Electronics Forum | Fri Jul 09 11:28:24 EDT 1999 | Earl Moon
| Has anybody successfully used an automated dispensing system to put solder paste dots on .5 mm pitch pads?? I need to replace some Meritec tsop sockets and I don't want to use the single site stencils for .5 mm parts. | Carol, Don't blame you f
Electronics Forum | Fri Jul 16 14:02:03 EDT 1999 | Timothy O'Neill
| Earl, | | Srt makes a system called the summit 2100D. Its a relatively new product but it is designed for rework applications. The programming is simple and interfaces well with other srt products. As with any dispensing system, you have to cl
Electronics Forum | Wed Jul 07 16:56:43 EDT 1999 | John Zizzo
Hi! I'm a process engineer attempting to do a capability study on our existing convection reflow oven - Heller 1500. It was recommended by an independent consultant to do at the very least, load testing, process ready testing, and board uniformity h
Electronics Forum | Wed Jul 07 13:41:42 EDT 1999 | Dave F
snip | | If you go for plugging be sure you have a protrusion spec that you can live with. This often results in little bumps of epoxy that can interfere with component placement. For us, tenting .015 vias usually gets us about 80% coverage from
Electronics Forum | Wed Jul 07 14:14:03 EDT 1999 | Dave F
| Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and takes-up approximately 25% of the pad area. Th
