Electronics Forum | Fri Jan 21 10:40:15 EST 2000 | Dave Chapman
Having adjusted the profile speed slower and adjusting the temps to the recommended lower levels, amazingly the mid chips have almost disapeared (90%). It appears they have been trying to run a "1 profile fits all" on the ovens for Alpha 737 and UP78
Electronics Forum | Tue Dec 14 20:57:07 EST 1999 | Curtis T.
John, I have never seen black pad covering a majority of the board, that would be a scarry thought. I think he is talking about building modules (sims dims) and getting soldering spatering on the gold edge connectors. We went the rounds with that s
Electronics Forum | Thu Dec 09 17:18:44 EST 1999 | Russ
Ron, I'll bet you have the Ni/Pd finsh on these components! We have had the same problem in our shop. Not knowing the Kester spec. we had to raise the max temp to 220 Deg. C and increase the time above liquidous to 60 seconds or greater. It seem
Electronics Forum | Sat Dec 04 02:21:32 EST 1999 | Vinesh Gandhi
Hi All, I am facing a strange problem. One of my esteemed & valued customers has an unusual requirement of cleaning the board with IPA after soldering is complete. I am using alpha metals UP78 no clean sodler paste during reflow. This IPA cleanin
Electronics Forum | Thu Dec 02 23:43:23 EST 1999 | Kantesh Doss
We have a serious misalignment problem of D-Pak components (Specifically Motorola's part number MJD-3055/MJD-2955)following reflow soldering process. We are using Alpha Metals UP78 solder paste. Our reflow oven is Nitrogen inerted and our oxygen leve
Electronics Forum | Mon Oct 11 12:29:01 EDT 1999 | John Thorup
| We have three buckets filled with leftover solder paste from our screen printing process. Kester has informed me that they no longer take paste, but only dross and pot dumpings. Does anyone know if there's someplace I can recycle this, or am I go
Electronics Forum | Tue Sep 21 11:28:26 EDT 1999 | Dave F
| I've had some trouble pasting a test board for a MicroBGA trial. Most of the paste remains in the stencil apertures. | The stencil is 6 mil thick, laser cut and electo-polished. | The apertures are 12 mil in diameter with 20 mil pitch. | We are usi
Electronics Forum | Tue Sep 21 13:43:33 EDT 1999 | Glenn Robertson
| I've had some trouble pasting a test board for a MicroBGA trial. Most of the paste remains in the stencil apertures. | The stencil is 6 mil thick, laser cut and electo-polished. | The apertures are 12 mil in diameter with 20 mil pitch. | We are usi
Electronics Forum | Thu Sep 16 11:04:48 EDT 1999 | Lee Radney
Looking for Computerized Maintenance Software..... Here is what we need.... We are a high volume, high mix, company with 3 independent lines. All support personnel have pagers. We are looking for a piece of software that can handle daily maintenanc
Electronics Forum | Sat Aug 28 09:11:38 EDT 1999 | Mike McMonagle
| Recently, our solder dross reclaimer refused to take our | used solder paste tubes. He said the small percent of paste | remaining in the tube is now considered hazardous waste. I'm interested in advice on how others are disposing of this "hazardou
