Electronics Forum | Sat Dec 09 08:32:25 EST 2006 | davef
Thoughts are: * Most board fabs have routers that can do this work. Can yours rework these boards? * Scrap the boards and start anew. Someone made a mistake. Cut your losses. * As a wild and crazy guy alternative, buy a router with a 45* bit from
Electronics Forum | Fri Dec 15 18:36:46 EST 2006 | Grant
Hi, I have noticed we are getting residue on our wave pcb's and it's worse with lead free, since we changed to the flux we are using. We are currently using Avantec VOC Free flux model Ecofree 303. It looks like it's made in Malaysia. Does anyone h
Electronics Forum | Thu Dec 21 15:11:53 EST 2006 | billyd
Hey fellas. Listen, I'm trying to see what the industry as a whole is doing with regard to placement and reflow of the tiny QFN devices. Not the larger ones, but the 4mm or 5mm ones. We struggled a bit with a QFN24, 5mm square. The thermal pad undern
Electronics Forum | Thu Jan 04 20:31:21 EST 2007 | Ben_T
Have you thought about an AOI system? With the system we have where I work, I'm able to run queries that'll tell me DPMO, yield, and pass/fail rates on a board level, part level, and opportunity level. Furthermore, this data can be broken down to see
Electronics Forum | Wed Jan 17 11:43:14 EST 2007 | stepheniii
The dumbest thing I read was the response to me saying people should not automatically send product to China. I was told not to bury my head in the sand. A lot of companies are being lemmings and taking it for granted it's best to send a product to C
Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
Electronics Forum | Tue Jan 23 14:26:12 EST 2007 | CL
Hello AR, Yes we are inspecting SMT that has been wave soldered. We are not inspecting solder on through hole components. We have actually found the solder inspector works better for wave solder SMT joints than reflowed. The system is great at ident
Electronics Forum | Thu Mar 01 18:29:10 EST 2007 | Marc
Hello I atteneded the show as a supplier. Been to many over the years. All in all it was not too bad. The show layout was a bit differnt and not in exact grids as in past that made walking the show a bit interesting. They had buses running fro
Electronics Forum | Wed Jan 24 10:08:36 EST 2007 | electronhose
Immersion Silver, ImAg, is becoming the finish of preference. This is due to it having similar process limits vs. SnPb HASL. There were some early concerns about shelf life, but new chemistries have extended finish shelf life to 12 months+. Many boar
Electronics Forum | Sun Feb 04 15:06:20 EST 2007 | Scotty
Profile should have a longer cool soak. Verify as was mentioned all pin/fixture support through out the entire process. Print, Place, pre reflow hand load, post reflow, carriers, ICT, Depanel and FCT. Conformal Coated or Potted? Mylars work well for
