Electronics Forum | Fri Jan 06 17:20:47 EST 2006 | davef
Mike You get what you ask for. We ask for 0.001 inch minimum. If your supplier's published process range allows thickness below 0.001 inch minimum, you need to define your own acceptance criterion. We don't use average measurements in lot inspect
Electronics Forum | Wed Jan 11 08:27:35 EST 2006 | davef
MSK As GS told you in an earlier posting, J-STD-002 and IEC 68-2-69 describe methods and equipment for component solderability testing. Go get a copy of either one. The primary component solderability test methods are: * Dip and look method * Wett
Electronics Forum | Tue Jan 10 12:17:17 EST 2006 | Rob
Hi, The ROHS compliant parts are usually Matte Tin on the outer terminal plating. There are also 2 further types of metal on the average chip cap - the undercoat metal of the outer electrode & the inner electrode. These are usually the same & are
Electronics Forum | Thu Jan 12 09:35:09 EST 2006 | ratsalad
That is the document on which I based my Pb-free solder paste evaluation, with some modifications. Here's the full Zarrow PDF: http://www.smtinfocus.com/PDF/Evaluating_solder_paste_zarrow.pdf Also, we're doing a Pb-free vs SnPb comparison. We are
Electronics Forum | Wed May 03 22:33:57 EDT 2006 | ramerez
I am based in Nogales and I have also tried the MS2, I was told to immediately cancel my trials, It did reduced the build up of dross but the mess it made to the wave and the surrounding areas was very bad, Everything was coated black and the smell a
Electronics Forum | Wed Feb 01 09:26:39 EST 2006 | pjc
Density is an "implied" measurement to determine activity. Most flux suppliers can sell you a flux acidity (activity) measurement kit. I used one from Multicore a few years back. We used it once in the morning and once after lunch to monitor no-clean
Electronics Forum | Wed Mar 15 21:21:43 EST 2006 | Chunks In Cebu
Yes, different pastes will cause ovens to become "dirty". I believe you are talking about flux build-up. I've switched from one paste to another based on sample studies, only to find an increase in oven cleaning. During most solder paste evaluatio
Electronics Forum | Wed May 03 22:41:36 EDT 2006 | ramerez
I am based in Nogales and I have also tried the MS2, I was told to immediately cancel my trials, It did reduced the build up of dross but the mess it made to the wave and the surrounding areas was very bad, Everything was coated black and the smell a
Electronics Forum | Wed Dec 20 22:54:28 EST 2006 | fastek
I think that in this day and age.....if you are not testing the feeder via some sort of indexing proceedure while the feeder is off of the machine.....you are simply not going to be certain the feeder is working properly. The Alternative SMT jig do
Electronics Forum | Wed May 10 08:41:19 EDT 2006 | russ
Yes, we added some soak, we also use a 5 zone oven. We utilize a .020" x .020" pad with center to center at .042". We only get tombstones on misplacement or bad paste release now. Registration of component is key with pbfree, the parts just don't s
