Electronics Forum | Wed Jun 23 10:21:25 EDT 1999 | Chrys Shea
| I am looking to apply 10-15�m of a conductive material that will withstand 280�C. Our product consists of an alumina substrate sputtered with NiCr (2000�) and Copper (2000�) and 15-60 �m of electroplated copper (all metals patterned on the substra
Electronics Forum | Tue Jun 22 17:37:51 EDT 1999 | Dave F
| I was wondering if anybody could give an estimated cost of equipment maintenance per year for a complete SMT line for | a medium volume facility? | John: Budgeting for maintenance from two perspectives: 1 We budget 1 percent of the capital cos
Electronics Forum | Wed Jun 23 06:26:07 EDT 1999 | Graham Naisbitt
| You may want to rethink using an inline for both OA and No-Clean applications. Since the majority of your applications are OA, it would not make a lot of economic sense to run saponifier in your inline for a minority application. My suggestion is
Electronics Forum | Mon Jun 21 16:11:41 EDT 1999 | John Thorup
| | I am finding that some of our IC's are coming from the supplier with the humidity gauge in the bag reading 10-20%. Has anybody done any tests to determine what humidty level in a package will cause problems during reflow? | Usually a proper m
Electronics Forum | Mon Jun 21 10:53:02 EDT 1999 | Clifford Peaslee
Wayne, I'll look into it. Sounds like something is not setup quite right on our end. You should not have any errors in the email section. Thanks for the error notice, I'll get back to you in a few. Cliff | Cliff: | | It might be only me, but it
Electronics Forum | Sat Jun 19 11:44:00 EDT 1999 | Vic Lau
Do anyone have any experience on assembling high frequency product, 1.8GHz or 2.4GHz. In our production line, we manufacture 1.8GHz product with using no clean paste (RMA type) for reflow and no clean wire for rework. In our functinal test,either at
Electronics Forum | Fri Jun 18 15:39:47 EDT 1999 | Earl Moon
| What's wrong with the Tin? Just wondering | | MDCox | | | | Electroless silver had promise, from Alpha, but I don't know where this ended up. Also Omikron's "white" electroless tin is proported to be a good alternative, though I've never been a
Electronics Forum | Fri Jun 18 12:20:16 EDT 1999 | John Thorup
| Now don't everyone jump on this at once, but it seems time for me to send out copies of my not even close to being dated copy of an article about HASL. Though it was published in 1992, in Printed Circuit Fabrication Magazine, and it got rave review
Electronics Forum | Fri Jun 18 12:36:52 EDT 1999 | Brian
What is the future of HASL with lead-free solders? I have grave misgivings as, even if it works properly (which I'm not too sure about), the alloy will have to match that used in the soldering process, or nearly so. No use using a Bi-containing HASL
Electronics Forum | Fri Jun 18 06:54:43 EDT 1999 | Paul McMichael
A user of one of our components exceeded the floor life of some plastic BGA components. They did do a pre-bake prior to SMT reflow but only 72 hrs at 40C and not the recommended 12 hours at 125C. I've recommended accoustic microscopy to look for popc
