Electronics Forum | Thu Dec 21 04:27:31 EST 2000 | teohbengee
Need help urgently. Anyone can provide me some information or site on reliability test on PCB assembly like solder joint or anything. Some test like ERSA Test, SHMOO Test, Pull Test, Temperature cycle and humidity Test, vibration Test or any related
Electronics Forum | Wed Dec 20 21:32:47 EST 2000 | Dave F
You're correct it's a goofy question. Voltage is going to be circuit dependent, since the ball will be connected to the board. There's some ball dimensions in the fine SMTnet Archives ... they're about four times the diameter of your wires. If tha
Electronics Forum | Thu Dec 21 20:13:02 EST 2000 | Brad Kendall
I used to switch my N2 on and off for different products and I had performed profiles on the products with and without the N2 on and there was not a difference in the profiles. So you should not have to adjust your profiles. I think everyone else c
Electronics Forum | Thu Dec 14 19:38:28 EST 2000 | Dave F
OK, now let me ask the really dopey question ... so if the irregularity of the HASL surface is punching holes in the thermal gasket and causing shorts to the heat sink, why are you putting solder on that surface? I wonder how the thermal conductivit
Electronics Forum | Thu Dec 07 11:38:04 EST 2000 | Dason C
Please advsie what kind of the solder paste which you are using and we have experience when using Alpha WS609 and found a lot of foaming. Beside, are you using the spray fluxer for your wave or not? If you have spray fluxer then you don't need to u
Electronics Forum | Fri Dec 01 17:03:57 EST 2000 | Dave F
Curious, very curious ... Residues � Where are these residues? [solder & laminate / mask, solder only, laminate / mask only] What is the result of your analysis to the residues? How do you know it�s a flux residue, rather than a chemical by product
Electronics Forum | Thu Nov 30 21:45:44 EST 2000 | Dave F
It's unlikely that anyone other than the biggest of whooses would think of 0.031" a fine pitch. I prefer 0.025" on tape with solder plated copper leads make in a shape that bears-up well after being driven over by a Mack truck, yet is compliant enou
Electronics Forum | Wed Nov 29 20:32:08 EST 2000 | irwanm
I'm new in SMT and the company I'm working with has already purchased SMFL-3000 manual pick & place system with hot air and we don't have reflow oven. We are now starting design SMT board. My question is, how we reflow the solder? After all component
Electronics Forum | Thu Nov 16 18:19:10 EST 2000 | Dave F
We want to improve our process for accepting SMT solder paste stencils received from suppliers. Our process: * E-mail CAD aperatures to supplier with "readme" giving specific fabrication instructions to the supplier. * Receive stencil from the suppl
Electronics Forum | Thu Nov 09 01:17:28 EST 2000 | DL
John, Ahhhh the possibilities. Have you considered the dissipative properties of available substrates? A ceramic (excellent heat dissipation) based substrate could be a possibility for future designs. Maybe there are surface mount parts out there fo
