Electronics Forum | Wed Oct 13 05:46:27 EDT 2004 | apetkov
Hi Do you know about some kind of database (library) with physical specifications of the most widely distributed SMD Components. Something like BGA, QFP, SOP, etc. and for each corpus width, length, pins, etc. JEDEC has something similar, but t
Electronics Forum | Mon Dec 12 13:34:15 EST 2005 | jbrower
Hi Frank I use an electrovert econopak and am very pleased with it. Electrovert offers a leadfree upgrade to the pot but it is a might bit expensive. Contact them for pricing. In my machine I am going with SN100 distributed by AIM. It might be some
Electronics Forum | Mon Dec 26 13:31:16 EST 2005 | mariss
Addendum: The boards are 2" by 2.4" (50mm by 60mm) and have 158 SMT components and 20 thru-hole parts. The nine X7R caps are distributed over the board; some are in the middle, others are near the V-grooved board edges. There is no discernable rel
Electronics Forum | Mon Jul 10 08:24:32 EDT 2006 | dougs
Hi Rob, Thats the thing, there seem to be no datasheets available, only catalogue pages on the distributers website. PBT is not listed on these pages. I'm thinking about takin g the other suggestion and running a couple of samples through the o
Electronics Forum | Thu Jan 18 08:37:10 EST 2007 | CL,
"solder tends to pool on the short side of the substrate" Does the short side of the substrate have any significant difference in thermal mass? if so, try slowing the belt (within reason) or increasing temps (within reason) to better equalize therma
Electronics Forum | Thu Feb 22 00:22:53 EST 2007 | J. Pigott
I realize this is a bit off topic but looking at some of the discussion. I expect someone might be able to help. Looking at CP IV ball screws 120" and searched the world over for specs. Lead Outer Diameter TPI backlash resolution typical wear on c
Electronics Forum | Mon Mar 12 08:59:46 EDT 2007 | davef
Questions are: * You say 'voids', but you describe poor barrel fill. Are you seeing both? * Sometimes designers need to reduce the heatsink effect of large ground and power places, but this usually shows on the two upper corner pins, not all corners
Electronics Forum | Tue Mar 20 07:27:26 EDT 2007 | davef
You need to keep the silver concentration of the solder connection below 2 percent by weight. Concentrations above that level can cause solder connections to fail. We have seen 4 percent concentration discussed. [The 4% assumes a uniform distributi
Electronics Forum | Fri Jun 22 14:16:28 EDT 2007 | patrickbruneel
I agree with the down to earth, low tech but very effective peace of card board and is far better then trying to measure Mg/Inch sq with a volatile media. The only addition I would like to make to �Real Chunk�s� advice is: Dry spots on the cardboard
Electronics Forum | Tue Feb 17 14:33:27 EST 2009 | tedel
Realize this thread is a bit old, but others may start inquiring soon... Just learned Biral USA in McLean, TX is no longer in buisness. Does anyone know of any other stateside distributers for the Biral T&D? Called 'Grainger' and they do not carry it
