Electronics Forum | Wed Feb 10 17:00:44 EST 1999 | James Seagle
Does anyone have experience placing a Pinrex 2mm 2x20 SMT header. The dimensions of the part are as follows: length 40mm (1.58"), width 6mm (.236"), height 5.35mm (.211"), pitch 2mm (.079"). If so, what type of centering are you using? Any advice
Electronics Forum | Wed Feb 10 07:50:52 EST 1999 | michele sommaruga
I am referring to reflowing twice. Fist time I reflow the up side, turn the PCB and reflow the bottom side. | By double reflow are you referring to double sided reflow? Or are you referring to reflowing twice? | | | | I would like to have informat
Electronics Forum | Mon Feb 08 16:12:36 EST 1999 | Leonard Levy
Has anyone had any experience in using SMT to mount an organic (FR-4, Getek) rider card onto an organic (FR-4, Getek) mother board? By SMT I mean the attachment of the rider card would be through pads directly to pads on the mother board. Thanks,
Electronics Forum | Thu Feb 04 09:09:07 EST 1999 | dave
Can anyone help me with the pros and cons of trying to wave solder tantalum and large (1812) ceramic capacitors. I do know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what problems I c
Electronics Forum | Thu Feb 04 21:17:41 EST 1999 | Chris G.
| What allowances are people using out there for components off-pad, we currently use 50% of lead width without breaking trace/component clearances but we have a customer demanding 25% allowance ? | IPC states: 50% off pad for class 1 and 2 25% off
Electronics Forum | Fri Feb 05 17:56:38 EST 1999 | Chad Haim
| I realize it's been discussed many times before. I need to know your opinions, experience, and knowledge concerning "today's"/latest and best pallet designs, suppliers, and methods for using them more effectively. | | Thanks much, | | Earl Moon |
Electronics Forum | Thu Feb 04 20:31:10 EST 1999 | Dave F
| I'm researching SO-8 power RF device mounting methods. | | Possible mounting method | | 1. Via thru holes | | Still the thermal resistance of the PCB too high | | Do you have suggestions for mounting the component, PCB/? | Joni: What is it ab
Electronics Forum | Thu Feb 04 01:34:51 EST 1999 | Joe Cameron
Hello all, Are BGA's easy to develope shorts? If a process is stable and all of a sudden you get BGA's shorting out on you, what might be problems? We've checked our solder paste amount, and we've rechecked our reflow profiles and nothing has chan
Electronics Forum | Thu Feb 11 14:36:42 EST 1999 | Evelyn York
Hey, has anybody experienced problems with solder balls falling off BGA's? I have not been able to identify a contaminant nor any physical problems that would cause this. On packages with 'good' adhesion I have not observed any intermetallic form
Electronics Forum | Wed Feb 03 15:18:25 EST 1999 | Michael Allen
I'd like to find some technical papers on the reliability of reworked BGAs. If you know of any, please let me know. I have a concern about this because our current rework process does not apply solder paste to the pads prior to placing the part; th
