Electronics Forum | Mon Apr 26 17:20:10 EDT 1999 | Chrys Shea
Hey MoonMan, Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. We we're all set up to go to Tetras, then mgt decided to close down our factory - Dooop! "Foiled" again! (te
Electronics Forum | Sun Apr 25 09:45:13 EDT 1999 | Joe Cameron
Hello all, Our guys here still have some questions on the "optimized" profile which sees a more moderate ramp up straight to reflow temperatures versus the conventional profile which has a plateau at around 150 Celsius. If the optimized profile can
Electronics Forum | Thu Apr 22 13:43:14 EDT 1999 | Steve Gregory
Hey Ya'll! Have any of you ever worked with one of V-Tek's "Economax" tape and reel machines? The biggest thing I'm curious about is the type of cover tape that these machines use. It's something they call P.S.A. (Pressure Sensitive Adhesive)cover t
Electronics Forum | Fri Apr 23 17:44:50 EDT 1999 | Stefan Witte
| Hey Ya'll! | | Have any of you ever worked with one of V-Tek's "Economax" tape and reel machines? The biggest thing I'm curious about is the type of cover tape that these machines use. It's something they call P.S.A. (Pressure Sensitive Adhesive)c
Electronics Forum | Sun Apr 25 02:58:58 EDT 1999 | Haim H.
| Hey Ya'll! | | Have any of you ever worked with one of V-Tek's "Economax" tape and reel machines? The biggest thing I'm curious about is the type of cover tape that these machines use. It's something they call P.S.A. (Pressure Sensitive Adhesive)c
Electronics Forum | Thu Apr 22 01:47:28 EDT 1999 | Larry Johnson
Recently, we have been having problems with PLCC's passing vision on our IP's If the part is set up to be placed on Head 2, it will not always pass vision. However, if we move it over to Head 1, it will pass and place just fine. Now, I do realize
Electronics Forum | Wed Apr 28 00:58:22 EDT 1999 | Will B. Caught
| Recently, we have been having problems with PLCC's passing vision on our IP's If the part is set up to be placed on Head 2, it will not always pass vision. However, if we move it over to Head 1, it will pass and place just fine. Now, I do realiz
Electronics Forum | Wed Apr 21 15:27:24 EDT 1999 | Murray Pulman
Hi Scotty sorry to stir things up but we assemble some seriously high value boards on a contract basis with vias through bga pads. However, not blind vias, so there are no cleaning issues & we use 6 though stencils to provide a little extra paste t
Electronics Forum | Tue Apr 06 12:55:01 EDT 1999 | Patrick O'Connor
0603's and 0402's are being damaged by the water wash post reflow. PCA's are 1" X 4" and 2" X 2" approximately. We've adjusted water pressure so that the top-down is higher than the bottom up. The baskets have a .5" mesh spacing. Some baskets h
Electronics Forum | Fri Apr 02 22:01:19 EST 1999 | Dean
| Anyone knows what is the optimum squeegee angle for screen printers. | | 45 Degrees. The forward velocity creates a downward pressure equal to the vector pressure (equalibrium). This is commonly known as paste "rolling action". Too obtuse an an
