Electronics Forum | Mon Feb 02 05:08:37 EST 2004 | heccles
Anybody seen problems with potted trimpots and reflow soldering - specifically poor wetting as a consequence of lead contamination from the potting compound. Regardless of reflow profile used (MIL -STD -202) cannot get a good joint formed ! If you us
Electronics Forum | Mon Feb 02 16:47:33 EST 2004 | davef
If you have potting compound on your solderable surfaces, you can develop reflow recipes until they are picking cotton on Antarctica and they will not take solder. You should: * Tell your buyer [customer] not to purchase parts with unsolderable lead
Electronics Forum | Mon Feb 02 12:26:24 EST 2004 | kauer
cd{space}mint. At the mint directory type C:>MINT/load. Re-start using ctrl+alt+del when mint is finished loading, it will sayC:MINT/. Note: If your Machine comes back to life, Do Not turn off main power until You can replace those batteries, with t
Electronics Forum | Mon Feb 02 12:46:36 EST 2004 | kauer
Just a hunch, pull out and re-seat the cards. also check power supply voltage. We bought 2 used machines and one of them would not boot up, the software would just go in a loop. Turns out the 5 volt power supply was low, 4.85v. just low enough to cre
Electronics Forum | Mon Feb 02 14:06:27 EST 2004 | jsk
I did reload mint. When i do this the machine runs fine for about 15 minutes, but i have to continue loading boards. If I let the machine idle for 3-5 minutes, i get the error. We are a low volume manufacturing company, so on a 20 piece run i will re
Electronics Forum | Thu Feb 05 08:39:35 EST 2004 | pjc
Dave is correct in that the Zevatech is actually a Juki. Made by the Japanese Juki and labeled by the Swiss Zevatech. The PM 575 is somewhat vintage. I believe it may be all mechanical component centering. It may be OK for the 20mil fine pitch but ma
Electronics Forum | Thu Feb 05 11:52:54 EST 2004 | mrmaint
To All, I am looking for some feedback on the storage and handling of moisture sensative components. Mostly what people do for tubes and reels since most of these cant handle more than 60c.the ipc standard states that they can be baked at 40c.The onl
Electronics Forum | Thu Feb 05 16:59:53 EST 2004 | pjc
MrM, Yes, here in lies the dilemma � �who the heck has 67 freaking days to wait for dry-out!� The only real way is to remove said parts from their carriers and put them into something that can handle the higher temp. I've seen people using those N2 c
Electronics Forum | Thu Feb 05 17:54:04 EST 2004 | davef
Even with the best of intentions, some lots of components just last too long. Recognize that controlled environment storage is only a delaying tactic. So when the piper come to play and baking becomes inevitable, we "repackage" components in tubes
Electronics Forum | Fri Feb 06 13:54:44 EST 2004 | greg
hi all does anyone of you have experience with new p&p Essemtec FLX1020/1030? what are the advantages and disadvantages in practice? how you evaluate Essemtec machines in production? if you can choose between Essemtec and other p&p machine for high
.gif)
