Electronics Forum | Mon May 17 12:46:43 EDT 2010 | flipit
Big problem. Certain LED from certain manufacturer sticks to the tape and reel cover tape. Peel back the cover tape and every LED lifts out of the embossed pocket and sticks to the cover tape. I believe this is from static and not any sort of adhe
Electronics Forum | Tue May 18 11:22:24 EDT 2010 | flipit
The ionizer was something we thought about right away. I need to investigate further. Somehow I need to get the ionizer mounted on the chipshooter. An oldschool chipshooter. A turret machine. My other concern is can I blow the ionizer at the par
Electronics Forum | Tue May 18 12:41:28 EDT 2010 | scombs
We have seen the same thing on small parts (8mm tape) and what we did is sprayed some ESD mat cleaner on a lint free towel and wiped the cover and carrier tape down. Since the cleaner is static dissipative the issue went away and we were able to get
Electronics Forum | Mon May 17 16:09:03 EDT 2010 | davemacnemo
Is there anyone out there still using TDK RX11s and interested in sharing experience with a guy that has the dubious distinction of owning 2 of the beasts. They have great potential but stoppages due to parts inspection errors are killing me. Not a
Electronics Forum | Wed May 19 15:42:46 EDT 2010 | davef
Hear ya. Mostly, we production people. So, we shy away from home brew soldering techniques, unless we get ourselves in a mess. That being said, there's a fair amount of stuff on the web about home brew BGA and fine pitch QFP soldering. Here's an
Electronics Forum | Mon May 24 13:11:12 EDT 2010 | deanm
A guideline that I use agrees with MikeS: For 20mil pitch, apertures should be 9-10mil with a stencil thickness of 5-6mils to achieve an acceptable aspect ratio of 1.7. Just be sure you are using a mesh Type 3 or 4 solder paste. Otherwise, larger par
Electronics Forum | Thu May 20 11:36:57 EDT 2010 | davef
Ansell ANS 11-100 HYFLEX (ESD) static dissipative coated Size||Ansell p/n||Techni-Tool p/n 7||ANS111007||328PR107 8||ANS111008||328PR108 9||ANS111009||328PR109 10||ANS1110010||328PR110
Electronics Forum | Mon May 24 12:05:53 EDT 2010 | deanm
Did you try Techspray Wondermask W? It is water soluble and can probably be transferred from the bottle to an EFD type syringe for dispensing (we use the P and the PL that way). As far as if it will swell through the reflow, I don't know. We don't us
Electronics Forum | Tue May 25 11:37:50 EDT 2010 | davef
Where on the assembly is the dewetting occurring? Factors that influence dewetting usually involve non-ionic contamination such as: * Residues from board manufacture including silicone surfactants from solder resist & HASL rinse contamination * Comp
Electronics Forum | Mon May 24 19:43:46 EDT 2010 | jry74
Can anyone share some good practices to reduce FOD in the conformal coat area? I am new and trying to get my hands around a serious FOD issue. We get red, black, blue, and white fibers that gets trapped in our conformal coat, causing a lot of scopi
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