Electronics Forum | Wed Nov 18 18:10:16 EST 1998 | fraser
| | | | | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | | | | | | | Fraser- | | | | | | | | | | We use polyimide stencils with great success for our prototype boards.
Electronics Forum | Mon Nov 16 12:41:46 EST 1998 | MMurphy
| | | | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | | | | | Fraser- | | | | | | | | We use polyimide stencils with great success for our prototype boards. They are
Electronics Forum | Thu Nov 12 20:57:04 EST 1998 | Dave F
| | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | Fraser- | | We use polyimide stencils with great success for our prototype boards. They are cheaper and the accuracy/aper
Electronics Forum | Fri Nov 13 12:08:46 EST 1998 | fraser
| | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | Fraser- | | | | We use polyimide stencils with great success for our prototype boards. They are cheaper and the acc
Electronics Forum | Fri Nov 13 14:43:36 EST 1998 | Dave F
| | | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | | | Fraser- | | | | | | We use polyimide stencils with great success for our prototype boards. They are cheaper a
Electronics Forum | Thu Mar 22 08:07:41 EST 2001 | CAL
Selective Laser Soldering? Beamworks and Speedline Electrovert Both demo'd units at APEX. I am partial to the Beamwork machine cause it was able to do BGAs. Are the QFPs acceptable? You mention cleaning the pads, Stencil aperture enlargement could t
Electronics Forum | Thu Mar 22 15:44:50 EST 2001 | pteerink
I have a board with QFP240 plastic package exhibiting the same characteristics. Minimum heel fillet that doesn't change with stencil mods, paste change, profile change etc ( I am working to class 2, though, so my pass spec, although they are not pret
Electronics Forum | Thu Mar 22 15:45:20 EST 2001 | pteerink
I have a board with QFP240 plastic package exhibiting the same characteristics. Minimum heel fillet that doesn't change with stencil mods, paste change, profile change etc ( I am working to class 2, though, so mine pass spec, although they are not pr
Electronics Forum | Wed Mar 21 20:40:28 EST 2001 | dblsixes
We are building a monster ... Dimensions are 10" x 7" ... 12 layers ... A Logic Assembly with a Power Supply all rolled into one ... The Power Supply is in one section of the board, the logic in the other section ... The Power Supply obviously has a
Electronics Forum | Wed Apr 17 02:30:03 EDT 2002 | seje
Hello. There is been a lot of talk about thick plastic stencils vs. metal stencils for adhesive printing, but how about thin plastic stencils? We used to use a very thin plastic stencil (from loctite) with printgap (=snap-off) to adhesive printing
