Electronics Forum | Wed Jan 30 08:27:37 EST 2019 | mst3000
Hi there. We are facing an issue with the placing head of our SMT machine SIEMENS SIPLACE CF 2004 model where the vacuum reading is low (820 instead of 900). This is resulting in that the components are either falling off when the head moves onto the
Electronics Forum | Mon Dec 20 19:09:54 EST 1999 | Chris
If your flex circuit is only populated on one side, you can have the PCB vendor palletize the flex for you. What you do is have the flex circuit laminated to 062" FR4 using a thermoset adhesive like Dupont WA. Standard flex circuit adhesive. Howev
Electronics Forum | Mon Mar 21 11:10:32 EST 2005 | blueflag
Help We are having trouble soldering the above we have changed pad size but still have problems ???????
Electronics Forum | Thu Aug 10 14:52:08 EDT 2006 | russ
Should be some numbers on the top of the other two. If you can read them we can get you the right part info. it also looks as though you have some trace and pad damage that will require repair prior to you putting down new part. Or you can remove
Electronics Forum | Wed Dec 15 04:59:40 EST 1999 | Joshua Hall
Hello KA, When producing in kind of PCB product you have to base much of your decision on cost effectiveness, time, and quality. In order to get the best of all three you have to decide which you want to be your top priority. By adding an epoxy to
Electronics Forum | Wed Jul 14 15:36:34 EDT 2010 | remullis
98% to 99% pass yield should be your target. The previous company I worked for, we were able to meet these goals with most all of our products. It took us some years to achieve this level of pass rate. Of course analyzing and good reporting from some
Electronics Forum | Wed Dec 08 19:50:34 EST 2004 | shen_zte
can anyone tell me the benifit of the solder mask onto pad(part) or pad defined by solder mask?and how to excute the SMT process ? thanks.
Electronics Forum | Tue Feb 02 10:56:53 EST 1999 | Justin Medernach
| Would anyone have experience or information on where I could find pad geometry for tantalum capacitors that can be surface or plated thru hole mounted. | Yup, Check out IPC-782. That's got all the info on land geometries that you'd be looking f
Electronics Forum | Fri Mar 16 13:47:56 EDT 2007 | ck_the_flip
Another thing to look out for... Flex circuits, if not fixtured properly tend to move around and, well, "flex" during screen printing. At another place I worked, we fixtured the flex circuit on a SMT pallet on the corner tooling pins to "stretch"
Electronics Forum | Wed May 27 13:42:08 EDT 1998 | Chrys
| R&D is currently designing a board with smt components on both sides of the board. They are adding a 16 pin IC Gull wing. on the bottom side of the board. I have asked for only caps and resistors to be placed on the bottom side. Is there a recommen
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