Electronics Forum | Wed Jun 27 13:55:10 EDT 2001 | peterson
We are having some difficulty achieving 75% fill on some through-hole power connectors. The board is very thick. Any suggestions? Our plan is to preheat extensively, pre-tin the leads and perhaps add paste in hole. Anything else that might achieve th
Electronics Forum | Thu Oct 28 09:25:35 EDT 1999 | Dave F
Chris: Typical non-wetting causes are: * Poorly controlled soldering process * Incorrect material * Surface contamination * Insufficient preheat * Misapplied solder mask * Shadowing Without intending to insult you, all of the causes of non-w
Electronics Forum | Wed Sep 29 03:41:32 EDT 1999 | Wolfgang Busko
| Hi All, | Any one experince BGA-chipset warp about 10-15mil after removing | from PCB? | FYI, the rework temperature for preheat was 170C from room | temperature about 30 seconds, & BGA was removed at temperature | between 190-200C. | Thankyou.
Electronics Forum | Wed Sep 29 22:50:57 EDT 1999 | Dave F
| Hi All, | Any one experince BGA-chipset warp about 10-15mil after removing | from PCB? | FYI, the rework temperature for preheat was 170C from room | temperature about 30 seconds, & BGA was removed at temperature | between 190-200C. | Thankyou.
Electronics Forum | Mon Jul 19 12:37:15 EDT 1999 | Wolfgang Busko
| | | | | Hi, SMTASSY | | | | that�s what we do, soldering our double-sided-finepitch-BGA-and all-the-other-stuff-boards in vapourphase because it�s the only thing we have. | | First, we do not do real series produktion, only prototyping up to som
Electronics Forum | Sat Jun 26 21:17:34 EDT 1999 | Bob Huelsenbeck
Anyone having any conveyor rail shaking on Electrovert wavesolder machine model "Electra"? The conveyor shakes more with a pallet passing through the machine, particularly when the 20" pallet is passing from spray fluxer to the first pre-heater. Here
Electronics Forum | Fri Jun 25 09:43:24 EDT 1999 | Dave F
snip | | Dear John/Earl | | Thanks for your clarifications. To me also the problem does not seem to be linked with the PCB. The Pre heater temp. is set at | 450 degree C. We are using Alpha Aq. cleanable flux. Can you elaborate on the Desired
Electronics Forum | Fri Jun 25 12:01:49 EDT 1999 | Earl Moon
| | Dear John/Earl | | | | Thanks for your clarifications. To me also the problem does not seem to be linked with the PCB. The Pre heater temp. is set at | | 450 degree C. We are using Alpha Aq. cleanable flux. Can you elaborate on the Desired
Electronics Forum | Wed Jun 09 12:20:26 EDT 1999 | Gang Pan
I am starting a new project which involve 3 oz copper layer with 20 mil components on the top of the board and 0.040" thick copper with D2Pak on the bottom of the board. There is anybody has experience on metal-based PCB reflow process? I guess pre
Electronics Forum | Thu May 06 18:06:43 EDT 1999 | JohnW
| | Can anyone pls email me a typical temperature profile for wave soldering process. | | | | Thank you vey much. | | | | rdgs... | | | Typical depends on the processes you're developing. | | Key factors in my experience are flux type and requi
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