Electronics Forum | Fri Feb 17 11:01:47 EST 2006 | amol_kane
with lead-free solders, one would expect to find less instances of tombstoning. this is because SAC alloys are not eutectic and melt over a range of temp (usually 217-220 deg C) instead of at a single temperature. therefore the forces due to solder s
Electronics Forum | Fri Feb 17 17:26:56 EST 2006 | mika
Hmm... how about the people inside this room; working in this dry environment? This is something never discussed highly, but I believe it is most certainly important for the human health. This is another interesting thing about RoHS; the side effects
Electronics Forum | Fri Feb 17 06:16:52 EST 2006 | bwet
Dear Collegues: We recently commissioned a laser machining center that is used on a job shop basis for a variety of customer work. Does anyone have a recommended procedure for completing a machine capability study? How about a recommendation on
Electronics Forum | Fri Feb 17 15:06:46 EST 2006 | jdengler
Bert, After pressing F1 for auto operations but before pressing start, press F4 SQ.N. This will ask for a sequence number. Press 1 on the number pad then CR. This will start the program a sequence #1. Then press start and all is well. Jerry
Electronics Forum | Mon Feb 20 04:59:40 EST 2006 | Loco
For visual inspection table 1-2 seems to be in order here. If you can not see the bottom using 1.8 and table 1-2, it clearly would be a defect and rework would be the only option Well, my thoughts anyway, wonder if someone has other thoughts on thi
Electronics Forum | Fri Feb 17 14:32:53 EST 2006 | gipos
Hi all, The question for experienced operators: DEK 260 or DEK 265, which one is more suitable for high mix low volume to mate Juki 700 series line ? Is there any specific known issues regarding service, operation, repeatability... ? We have target
Electronics Forum | Mon Feb 20 15:45:03 EST 2006 | campos
thats the point: paste SMQ230 indium suggest a ramp between 0.5 a 1.0 degree,,but what ramp?? from 50 to 217 ,, 100 to 217,,,any idea?? i m using a ramp with .8 degree considering 50 a 217,,is teha correct????....thanks.
Electronics Forum | Mon Feb 20 19:35:28 EST 2006 | darby
From Indium Guru, (Hi Rich). "Ramp can be taken anywhere.... but mainly you want to look at the ramp when the flux is doing it's job. For the Indium paste, I would set a ramp rate of 100 to 200 (or 120 to 210).. somewhwere in that range should provi
Electronics Forum | Mon Feb 20 17:12:54 EST 2006 | mark
Hallo all, I have recently had possibility to work with DEK265. I have met with problem poor print definition (no sharp edges). I used stencil 150 thickness, metal squuegees. I moved than the same stencil, squeegee and parameters to DEK nifinty and
Electronics Forum | Wed Feb 22 16:55:04 EST 2006 | mark
Hi, We are not using vaccum caps. The support pins for both printers is the same ande cover all board (components only on Top side of the PCB). I will check snap-off (right know setting 0.2-04. mm/s). I also suspected poor gasketing but clamps are o
