Electronics Forum | Wed Jan 26 14:33:47 EST 2000 | Glenn Robertson
Tuan - How about Sn/0.7Cu? It's M.P. is 227 and it's readily available. If the leads are Gold plated you might consider pre-tinning them. If you need a higher temp alloy any of the major solder companies can help - I suggets you start with Ind
Electronics Forum | Fri Oct 14 16:45:14 EDT 2011 | proy
I have a wave solder machine I am replacing, it is full of tin lead 63/37. I would like to sell off in 100lb lots. A certificate of composition will be provided. Price is $6.50/lb not including shipping from Toronto Canada. 100lb lots minimum
Electronics Forum | Tue May 28 08:32:41 EDT 2013 | emeto
Hi Eric, your problem looks like a printing issue - if the part(or group of leads) missing solder is always the same. I would say you should check: 1. Stencil for any damage at this area 2. Squegee for damages 3. Adequate pin support un der the boa
Electronics Forum | Wed Oct 04 14:14:49 EDT 2006 | russ
Change mfgrs of paste OR better yet use pbfree paste, If you are collapsing the balls on the BGA then you are possibly overheating the paste/flux quite a bit. most lead pastes do not like much more than 230 C. I am assuming that you have a decent p
Electronics Forum | Tue Oct 04 03:16:14 EDT 2005 | grantp
Hi, I thought it was extreemly bad to use lead based parts with lead free solder? Regards, Grant
Electronics Forum | Thu Mar 16 10:41:34 EST 2000 | Russ
Are we talking midship SMT or wave soldering? SMT - I have found the best method is not having them (WOW) this can be accomplished through pad design, aperture design, placement accuracy, and profiling, It is my understanding however, that these
Electronics Forum | Thu Oct 05 11:48:00 EDT 2006 | Mario Scalzo, SMT CPE
Good morning all. We are able to offer some insight into the problem and offer a recommended reflow profile to solve this issue, but it really depends on the solder paste that you use, as different manufacturers use different boiling point solvents.
Electronics Forum | Wed Oct 04 15:06:57 EDT 2006 | C.K. the Flip
Hmmm.. you are in a pickle then. I have AIM's "Reflow Profile Supplement" where they recommend a Low-Long-Soak (LSS) profile for situations like your's. It's an old-school type profiling approach where you ramp up to 120*C for about 1 min. then soa
Electronics Forum | Tue Mar 07 17:00:39 EST 2023 | proceng1
Prior to the Generators, we bought tanks of N2. As long as you have an air compressor that can supply the generator, it's pretty much maintenance free. You change filters every year. In almost 15 years, other than changing filters, we've had to r
Electronics Forum | Fri Jun 24 07:02:35 EDT 2005 | davef
Problem 1: Solder shortage * Stencil aperatures [except the heat slug] should be 1:1 with the board. * Stencil should be 5 thou thick laser cut. * Board should be 1:1 with the component * Print should look good. Problem #2: Bad connection between p
