Electronics Forum | Fri Nov 11 10:32:12 EST 2005 | davef
Rob: After SAB purchased Pilsner Urquell, they changed from using hops to a extract of hops in their process. They changed the foil on the neck of the bottle from silver to gold at the same time. The result was PU went from THE UNDISPUTED BEST bee
Electronics Forum | Fri Feb 24 12:34:13 EST 2006 | Ticky Ticky Tembo No Sarimbo Hari Kari Bushkie Perry Pem Do Hai
Stepped stencils are usually the result of some dumb customer's requirement. 2 examples I can give: 1.) Customer demanded 50% wick-up the termination of a MELF component. No way you can get that from reflow. Played around with a drastic "step up
Electronics Forum | Mon May 01 22:55:02 EDT 2006 | KEN
....am I reading this correctly? "Screen Printing" or "Stencil Printing" Screen = agree = off-contact.....it's fuzzy going back into the memory banks to the early 90's. Screen mesh and emulsion will stretch to produce the gasket affect while snapp
Electronics Forum | Thu May 18 10:20:55 EDT 2006 | slthomas
Russ asks good questions and I think Chunks pretty much nailed it. Aspect ratio (aperture width/stencil thickness) s/b 1.2 minimum (I like 1.5 if I can get it). If your aperture width = lead width (.008"), yours is 1. Tough to get consistent paste r
Electronics Forum | Mon Jul 31 11:27:15 EDT 2006 | Chunks
I am printing convention leaded paste on onto Immersion Silver board. Board has 16mil fine pitch devices. I am having a problem getting the print to stick to board. Or I am having a problem with the stencil. Never experienced this with jobs befor
Electronics Forum | Thu Aug 03 10:13:41 EDT 2006 | wrongway
Hello Rush fan we have a Ekra E5 had it about a year the only thing I dont like is the foil on top of the doard holders you can take them off but if your board is warped then it dosnt clamp the board and it will fail the vision but we hav
Electronics Forum | Thu Nov 09 08:06:17 EST 2006 | cyber_wolf
We are having continual problems with our stencil bindings falling apart in our washer. We use a PMR5000 ultrasonic with Vigon sc2000 cleaning fluid. We cycle them in the washer for about 9 minutes. The fluid sometimes heats up to 105 deg F. Our
Electronics Forum | Thu Nov 09 15:11:42 EST 2006 | bschreiber
This link will explain the cause of the delamination: http://www.smartsonic.com/ssonicfaq.html#4 You need to shorten the cleaning cycle and lower the temperature. Provide me with your mailing address and I will send you a sample of our 440-R SMT D
Electronics Forum | Fri Nov 24 10:03:08 EST 2006 | slthomas
"The fluid sometimes heats up to 105 deg F." Not sure what you mean here...is it set at 105 but rarely gets there, or is your temperature dependant upon another process to heat it up? Also, what temp is your rinse water? We used to use a U/S clean
Electronics Forum | Mon Nov 27 13:36:24 EST 2006 | cyber_wolf
The fluid heats up to 105-110 from the ultrasonics running, and or from the fluid filtering pumps. The rinse temp is always the same as the wash. It is a single tank with a partition welded in between. (One side rinse, and the other side wash) FYI
