Electronics Forum | Wed Jul 05 10:54:26 EDT 2006 | slaine
In the last couple of weeks ive been working with a new mechanical design engineer, i knew things were going to be difficult when i caught him putting a trial through a reflow oven using loctight thread lock to hold a smd led in place. but today i ha
Electronics Forum | Mon Jul 10 04:16:03 EDT 2006 | dougs
Hi, We have a new product coming soon that has a fair number of PTH sockets and headers. I was thinking that it would be good to use intrusive reflow on some of them to even up cycle times between SMT and hand insertion, however, when i called t
Electronics Forum | Mon Jul 10 20:59:14 EDT 2006 | davef
Dave Try: * IPC-2221 - Generic Standard On Printed Board Design * IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards Our old [euphemistically] friend Earl Moon has written extensively on DFM. Look at his site: http://
Electronics Forum | Mon Jul 17 16:38:41 EDT 2006 | dave
Guys, My problem is that I have a 10 up panel and I have to use a selective pallet to run it thru the wave process due to SMT on bottomside. However the yields are very poor. We have done everything to improve them with some good improvements along
Electronics Forum | Mon Jul 24 09:27:09 EDT 2006 | nodlac
I think Dave F. and Russ hit the nail on the head...components are wrong in the reel pocket from the get go. We would make a point to specify this when ordering parts. Russ also, has a good point with his number "2" item. If your machine is optomiz
Electronics Forum | Fri Jul 28 09:40:11 EDT 2006 | pavel_murtishev
Good afternoon, 1. Yes, most of all I suspect the components. Could you explain what does mean "reflothermal recipe"? Ramp-to-spike? Ramp-soak-spike? Something special? Thanks. 2. Void is really huge. This voiding differs from "standard" voiding ef
Electronics Forum | Sat Jul 29 09:29:16 EDT 2006 | davef
A flying probe tester is a mid-speed placement machine with no feeders and the placement heads replaced with manufacturing defects analyzer test probe activator head. It is useful for testing bare boards, first piece inspections, and low volume prod
Electronics Forum | Mon Jul 31 10:51:11 EDT 2006 | Chunks
OK so you're stuck with gold. Not all that bad unless you're paying for it. Gold is very flat compared to HASL, so you should have no problems printing. This should lead to good placement as well. But after oven you mat have a big contrast betwee
Electronics Forum | Thu Aug 03 05:25:15 EDT 2006 | Rob
Hi AJ, Just had a look though our parent company's stock on components, and even the smallest of diodes & transistors (such as DFN1006-2 package - roughly 0402)come on 8x4 plastic. All of the 8x2 pitch tapes are paper (EIA: 01005, 0201, 0402; JIS: 0
Electronics Forum | Mon Jul 31 12:59:19 EDT 2006 | slthomas
Nothing like making a handful of changes all at once to confuse an issue, huh? Did you (or whomever ordered the stencil) spec. the same stencil design parameters that you would normally have used? We've never done fine pitch of any sort on silver
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