Electronics Forum | Fri Apr 08 00:28:34 EDT 2011 | Jacki
We use 7mil stencil to print Epxoy by using printing machine. Not all Tant from the same reel fell down. Some Ok but some misaligh. So, we concluded that Tants with higher terminal fell down while the Tants with lower terminal were fine. I dun say
Electronics Forum | Wed Jul 20 13:46:24 EDT 2011 | ccouture
200 PCB over 3 shifts now on Rain-X. No signs of contamination from the stuff. Yes, Rain-X, the stuff you buy at auto shop to treat the windshield so that the rain just rolls off the glass. Cost: ~$6 for 200ml, enough for ~100 stencils... I'm not pr
Electronics Forum | Mon Jun 27 06:52:07 EDT 2011 | rpatel28364
Hi All We are facing problem with solderability of BGA connector. After Xray we have found open under BGA connector. After removing from PCB it seems some copper pads are still gold. We are not sure why this is happening. We have 5 thou stencil and
Electronics Forum | Thu Jul 21 10:48:02 EDT 2011 | emeto
We use QTS and Vectour guard. I would prefer Vectourguard - it is very siple to set it up. However, you have to check the tension of the stencil everyday. I wouldn't trust them as 29 inch hard frame. It is always a metter of quantities. If you deal w
Electronics Forum | Fri Jul 08 13:09:25 EDT 2011 | joekirin
Thanks for all the input guys! After trying to figure this out in our smt process, we have discovered that the board house did not meet the required pad width for the fine pitched ICs when making the bare boards. Our stencil was cut out to fit the p
Electronics Forum | Fri Aug 19 06:49:27 EDT 2011 | leadthree
I got this MQFP-144 and the soldering looks always very flimsy. I think I use a suitable leaded paste (water-soluble) and the stencil thickness is also OK. The IC on the image looks a bit shifted, that's not the problem. The problem is rather that
Electronics Forum | Fri Sep 02 11:20:27 EDT 2011 | johnyq
We are new to the Universal GSM machine and MPM ap25 stencil printer. We are in Fort Erie Ont. which is very near Buffalo NY. Would there be anyone in this area with experience with these machines and time to help us with a few issues. We are not str
Electronics Forum | Thu Oct 13 17:41:28 EDT 2011 | dmiller
I guess I'll be different that the rest here. To stay consistent, I feel the best way is to use stencils to apply paste to the board first. We put paste on the board at SMT to solder them on initially. Then not when they get reworked? Why not tak
Electronics Forum | Thu Oct 13 18:00:01 EDT 2011 | spitkis2
>We put paste on the board at SMT to solder them on initially. Then not when they get reworked? When assembling the board, solder paste is applied to the BGA and all other SMT pads since the stencil was fabricated with those openings. If the openin
Electronics Forum | Sat Oct 15 19:18:14 EDT 2011 | enttec
Hi Does anyone have a calibration manual for a MPM AP25-Hie ? Have noticed recently that we have a slight mismatch between board and stencil when printing. I have the user manual but we didn't get calibration when we bought this machine Thanks Nic
