Electronics Forum | Wed Jul 05 14:55:53 EDT 2023 | robertobsuinc
How can I adjust the stencil frame size on my MPM speedline accela? is there an automatic option or I need to do it manually?
Electronics Forum | Thu Jul 06 12:23:43 EDT 2023 | poly
On my one and I think all of them you need to do it manually. Send the stencil shuttle to front, There's two hex screws either side (4 total) you need to loosen. There a little indicator for the different common sizes. Then send the shuttle to the
Electronics Forum | Thu Jun 22 10:27:26 EDT 2000 | Igmar
Can someone please help with the aperture size on a Micro BGA stencil. I want to have an electroformed stencil made with 0.1mm (4mil) thickness. The PCB pad for the micro BGA has a 0.406mm (16mil) diameter. What size should I make the apertures for t
Electronics Forum | Fri Jun 23 09:54:20 EDT 2000 | Dave F
Igmar: Chrys and JAX make good points. I'd like to add that you should be careful that you don't starve larger chip components of solder when using a 4 thou stencil.
Electronics Forum | Thu Jun 22 11:21:59 EDT 2000 | Chrys Shea
My personal opinion: Use 20 mil squares with the corners radiused at 5 mils. The squares offer 2 benefits: 1) A little more paste, which makes for a higher diameter solder column that is more reliable 2) Better stencil release of the paste. It's e
Electronics Forum | Thu Jun 22 12:50:13 EDT 2000 | JAX
Igmar, Although I agree with Chrys that square is good,( Better volumn ) his explanation is not entirely correct. Heres a little insert from automata: With square apertures, solder paste is deposited at the center of the aperture. The center release
Electronics Forum | Fri Mar 27 06:16:24 EST 1998 | mancheol,seo
Hello everyone~! I wonder becasuse of stencil board size. My component dimension is 200 x 200mm What the board size I choose? Please let me know solution... best regards man from korea
Electronics Forum | Fri Jan 17 15:36:23 EST 2003 | davef
How do 0.5 mm pads on the board help paste release from the stencil? Paste release from the stencil is a function of: * Paste * Printer operation * Stencil design You have no obligation to made your stencil apertures the same size as the pads on yo
Electronics Forum | Fri Jan 17 09:38:20 EST 2003 | Grant Petty
Hi, We have a BGA that uses .4mm diameter PCB pads on the BGA itself, however we have decided to use .5mm pads on the PCB, to help paste release from the stencil. Is this a bad thing, having different size pads on the PCB compared to the BGA itself
Electronics Forum | Fri Jan 17 21:17:18 EST 2003 | Grant Petty
Hi, Our paste release problems have been solved, and we worked on the stencil, and things are working well now. However this board was designed before we knew what was going on, and we thought a little more size on the pads would be a big help. Is
