Electronics Forum | Tue Aug 10 15:47:34 EDT 1999 | John Thorup
| | | | | I am having cleaning problems when processing PCB's which have | | | | | TAIYO solder mask on them. After processing, hand soldering and | | | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide mark
Electronics Forum | Tue Aug 10 16:01:12 EDT 1999 | Earl Moon
| | | | | | I am having cleaning problems when processing PCB's which have | | | | | | TAIYO solder mask on them. After processing, hand soldering and | | | | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tid
Electronics Forum | Wed Dec 18 09:04:29 EST 2002 | russ
Dave, You stated that an unfilled via is of greater strength than a filled or partially filled via. I posted to another thread recently and I stated that a filled via was of greater strength than an unfilled. I was tought (incorrectly?) that a fill
Electronics Forum | Tue Oct 19 16:59:58 EDT 1999 | Carol Zhang
Hi, thank you for the idea. I may try solder iron, but it much more slower since I have to solder spacers one by one. a stimpson press is used to press the spacer on the board and the edges of the spacers are rolled. Then we solder the edges to
Electronics Forum | Tue Oct 19 17:52:47 EDT 1999 | John Thorup
Hi Carol You can use a threaded standoff and put a screw through the board and into the standoff with the screw from the buss bar coming into the other end of the standoff. You should use a SEMS type screw or a internal star type lockwasher with a pl
Electronics Forum | Tue Dec 17 12:53:28 EST 2002 | russ
You looked one page to far in the IPC book! Fillet height of 75% is acceptable for all 3 classes. Per IPC 610 rev. C Section 6 table 6.2. A. Circumferential wetting on Primary side (top)between lead and barrel (not anualar ring) Class 1 Not spe
Electronics Forum | Wed Aug 11 13:34:58 EDT 1999 | Dave F
(snip) | | You're quite right. However, anyone who uses MeCl in an aerosol spray needs his head examining. I'll go further: if he continues, he will most CERTAINLY need his head, the rest of his CNS and his liver examining a little later on. It has
Electronics Forum | Sun Aug 15 05:45:15 EDT 1999 | Brian
Boca, Dave Sorry, but I cannot let this go. I'll go along with you that, at the time that the Montreal Protocol was initially signed (September 1987), there was no scientific proof that CFCs etc. were causing ozone depletion. There was, however, ve
Electronics Forum | Wed Aug 11 09:51:11 EDT 1999 | Brian
| | | Easy goods-in polymerisation check: clean, white, cotton cloth: wrap it round a suitably gloved finger and pour a few drops of methylene chloride (! toxic) onto the end of the finger and rub it onto the bare board for a minute or so. If it come
Electronics Forum | Thu Aug 12 05:33:23 EDT 1999 | Brian
| | (snip) | | | | You're quite right. However, anyone who uses MeCl in an aerosol spray needs his head examining. I'll go further: if he continues, he will most CERTAINLY need his head, the rest of his CNS and his liver examining a little later on
