Electronics Forum | Fri Jul 03 18:46:16 EDT 1998 | Jon
Yes, but at what price for the 'fast ' system???? | | | Help!! | Sorry, I missed the insert portion before. Contact me, I have a high-speed system capable of measuring a 12" x 12" pcb, all pads, in under 20 seconds. | | There has to be someone out t
Electronics Forum | Wed May 27 15:09:30 EDT 1998 | Dave F
| | | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not locali
Electronics Forum | Thu May 14 14:48:45 EDT 1998 | Dave F
We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. We have no custo
Electronics Forum | Thu Apr 16 14:31:04 EDT 1998 | Lou Madge
Dear Colleague, A seminar titled "Things that you should know before selecting an alternative surface finish" will be offered on Friday , April 24 in Philadelphia (during the Nepcon East week). The seminar will be covering topics related to the SERA
Electronics Forum | Mon Apr 20 13:49:49 EDT 1998 | Gordon Wenker
| Dear Colleague, | A seminar titled "Things that you should know before selecting an alternative surface finish" will be offered on Friday , April 24 in Philadelphia (during the Nepcon East week). | The seminar will be covering topics related to th
Electronics Forum | Thu Apr 16 14:29:07 EDT 1998 | Lou Madge
Dear Colleague, A seminar titled "Things that you should know before selecting an alternative surface finish" will be offered on Friday , April 24 in Philadelphia (during the Nepcon East week). The seminar will be covering topics related to the SERA
Electronics Forum | Sat Mar 21 12:19:51 EST 1998 | David Pick
I have read somewhere of a ratio of component weight vs. surace contact area rule for double reflow soldering. This ratio is the maximum weight vs. surface tension to hold a component on during the second reflow. With this number, a person could weig
Electronics Forum | Wed Mar 18 12:40:03 EST 1998 | Dave Fish
Cpk's on top flight ovens (e.g., Conceptronics, Heller, Electrovert, Vitronics) vary wildly, from 1 to 2+, between different supplers. The suppliers don't seem to understand Cpk's. A supplier's rep whose oven has a Cpk of 1.0 told me: 1. Cpk's don
Electronics Forum | Mon Feb 23 15:10:02 EST 1998 | justin medernach
| Stencil Opening | Looking for spec or any info to specify stencil opening for TSOP48 20mil that will consider also thickens and direction of printing, if applicable Ron, Use a six mil foil thickness for your stencil. Go one to one with your apert
Electronics Forum | Thu Jan 22 03:18:02 EST 1998 | Eldon Sanders
I'll bet the rate of temperature change may be the problem. A large black thin package will heat quickly, and the package peak temp will be greater than what you measured on the board. The bottom of the package will heat slower than the top, creati
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