Electronics Forum | Tue May 11 10:58:51 EDT 2010 | davef
Paste for dispensing differs significantly from paste for printing. [B Toleno Henkel Loctite]. So, if you compare paste characteristics: Characteristic of paste||Printable ||Dispensable Viscosity [million centipoise]||0.8 to 1||0.2 to 0.4 Metal cont
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 | Mon May 31 04:17:01 EDT 2010 | nizamjhr
Dear All , I have 1 unit of PBI-Dansensor , Model TIA-222 Oxygen Analyzer that have been sitting idle in my store room for quite some time. Now I want to setup this unit but I don't have any manual or wiring diagram for it. Anyone that have any exp
Electronics Forum | Wed Jun 09 03:29:20 EDT 2010 | whitewing
I've just ordered one of these, which appear to be about the cheapest. Widely used for reflowing BGAs on faulty Playstations apparently. I'll report on how well it works once I get it. http://shop.ebay.com/?_from=R40&_trksid=p3907.m570.l1313&_nkw=
Electronics Forum | Thu Jun 10 20:39:02 EDT 2010 | ada
T962's have a great reputation for cold spots, non-RoHS capable, and catching on fire. however, one can't argue that they are quite inexpensive! The T200's can be had for ~$2k and are apparently not too bad. See this thread for some first hand accou
Electronics Forum | Mon Jun 14 08:50:56 EDT 2010 | whitewing
Just been quoted GBP500 for 5kg (2.7L) of Galden LS-230. Don;t know if the lower temp non-leadfree stuff is cheaper If anyone in the UK has a small qty they'd sell me for experimentation, (e.g. old non-leadfree stuff they no longer use) please get in
Electronics Forum | Fri Jun 18 12:33:02 EDT 2010 | bob2000
Davef, Thanks for the reply. I do not know if a radial capacitor needs to be secured with adhesive. The board in question is a class 2 device where high reliability needs to be achieved. I can not find any book references where adhesive application i
Electronics Forum | Sat Aug 14 13:35:34 EDT 2010 | jdm2008
On our machine it takes about 2 or 3 hours to make a program from scratch with an initial library(say 180 components per circuit, 10 identical circuits). If we had to do all the components from scratch I'd imagine it would take at least 10 hours pos
