Electronics Forum | Wed Apr 29 17:51:44 EDT 2009 | smt_guy
One more thing: I have a Panelized PCB with 8 boards on the X directions. As I move to the next PCB towards the right my misalignment moves to the right by 0.02mm. By the time I reach the 8th PCB I'm Off by between 0.12mm to 0.14mm. My fine pitch
Electronics Forum | Fri Sep 08 01:08:10 EDT 2017 | tsvetan
The material is 0.12mm stainless steel, electropolished it's thick for fine pitch but we have lot of other big components on the board which do not solder good if we use 0.1mm thickness stencil. The 0.3 mm apretures are big enough and have good rele
Electronics Forum | Wed May 22 12:00:13 EDT 2019 | gregoireg
Thanks. It starts to make sense. There is a formula at the bottom of this page: http://www.circuitinsight.com/programs/50456.html It says: Stencil Thickness = 2.64mil + 0.0831 * pitch of component in mil. for 1.13mm, that gives exactly 0.16mm. So,
Electronics Forum | Thu Jun 20 23:28:15 EDT 2019 | SMTA-David
How can I upload image to this forum? I can show you the pad layout. I am thinking maybe too much solder. I used 0.16mm thick stencil but notice many us 0.12mm thickness. Also, cream layer is 100% of pad surface, I know for fine pitch parts it is r
Electronics Forum | Tue May 21 15:36:22 EDT 2019 | gregoireg
Thanks to @davef and @Evtimov for trying to help. It's useful but not exactly the answers I would like to get. I'm going to reformulate my question. I'm writing in mm so that it's more precise: I have a 0.12mm-thick stencil for some 0.4mm-pitch QFN
Electronics Forum | Mon Oct 12 10:26:52 EDT 2015 | eniac
My greetings to all. Time to time I receive the next results of modems soldering: http://i.piccy.info/i9/71ae4c358c6e4bc3f1cbf140495bc437/1444660170/135005/872954/GL868_7.jpg or http://i.piccy.info/i9/d1181be142e285a39b49b81d37bde72a/1444660270/1
Electronics Forum | Mon May 20 12:01:37 EDT 2019 | gregoireg
I have a PCBA job which has on the top side a few standard QFN components (0.4mm pitch) and a big module (35mmx60mm) with 1.13mm BGA pads: https://imgur.com/a/YUGgejW To be clear, this module is composed of a PCB with some components on top and some
Electronics Forum | Thu Apr 12 22:54:06 EDT 2007 | mika
conductor on the narrowest place ~0.07mm we suggest them to go for a PCB solder pad down to 0.30mm. The Conductor width is: 0.2mm The current problem they are having now is that there will be a problem with 14V to narrow the conductor to the narrowe
