Electronics Forum | Tue May 21 16:18:57 EDT 2019 | edhare
Interesting problem. I've seen this before on SMT device leads (see Gold Embrittlement paper at http://www.semlab.com). The AuSn4 IMC is solid at typical reflow temperatures and traps volatiles in the solder joint. One usually cannot crank the ref
Electronics Forum | Tue Jun 11 07:36:57 EDT 2019 | proceng1
I was looking for a solution to help use the short cut tapes we sometimes get for smaller runs. feederfingers.com has an interesting product that replaces the fingers on the feeder. It says you can string up strips as short as 3 inches. Is anyone
Electronics Forum | Fri Aug 23 03:13:30 EDT 2019 | winslow_p
Hi! What is the best soldering gun? I would recommend the Weller 9400PKS 120V. I think it is the best. I have been using it for more than a year and I was satisfied. If in doubt, check out the best Soldering Guns review at https://solderingironguide.
Electronics Forum | Thu Aug 15 16:45:09 EDT 2019 | stephendo
I just found this. https://www.avx.com/docs/techinfo/CeramicCapacitors/cracks.pdf It is extremely dated but still interesting. From the conclusion; " but both thermal shock and overstress cracks propagate at angles near 45°. Defective components h
Electronics Forum | Tue Aug 27 17:20:33 EDT 2019 | spoiltforchoice
https://www.minimrp.com/?gclid=CjwKCAjwqZPrBRBnEiwAmNJsNtHu3PLs1PtEw4aUiMr8OmwnQS1I4_b9XsxP_bWyUbAwl6qexRqfChoCUvkQAvD_BwE
Electronics Forum | Tue Oct 08 01:51:08 EDT 2019 | robl
Hi Alexey, I've used Combi machines too, but Universal were still selling new 2596D sequencers in 2003, way after the 6241D,E & F: http://www3.uic.com/wcms/Images.nsf/(GraphicLib)/366-00B.pdf/$File/366-00B.pdf
Electronics Forum | Sat Oct 19 03:59:13 EDT 2019 | robl
1) take the data from the pick & place machine - should be held in there somewhere in a file you could poll at certain times. 2) Barcode scannner reading the codes and storing them in a spreadsheet with time stamp 3) Take from the oven host PC if i
Electronics Forum | Tue Dec 03 02:58:43 EST 2019 | ellafromgenesis
We are a chip manufacturer in China for over 20 years. We've been working on chips and wafers for a long time and got pretty much experience. Anyone who have queations about production process? Any queation is OK. Or contact me through email yagzho
Electronics Forum | Tue Dec 17 05:58:36 EST 2019 | robl
We had a customer who used XRF to determine the thickness of the "tinned" layer of components - sort of what is briefly mentioned in Bob Klenke's SMTA paper - http://www.circuitinsight.com/pdf/Solderability_Testing_Protocols_Component_Re-Tinning_Me
Electronics Forum | Mon Jan 06 16:58:45 EST 2020 | cbeneat
I would recommend quik-tool. Jim Bernhard essentally the inventor of Grid lok left when they went to DEK. Started quik-tool, we use grid-lok in our printers, quik-tool in our Panasonic P&P instead of support pins. Like quik-tool alot more. JBernhard@