Electronics Forum | Tue Nov 30 16:55:51 EST 1999 | Dave F
Wolfgang: Made a mess of things now, eh??? Try: Masterbond Product UV15-7TK1A Dymax 911 Ta Dave F
Electronics Forum | Fri Aug 04 10:42:26 EDT 2000 | James
So Darby do you use your clamshell printers in production, if so what volume? Do you use a snap off distance? With our current printers the board is held with tooling pins, when the stencil is lifted the board has a tendency to stick and lift to so
Electronics Forum | Wed Dec 05 17:30:02 EST 2001 | davef
How do you know that "approx 450�C" is "too high"? As a side, the temperature on the temperature sensor is: * Inaccurate. * Not the temperature at the solder. Listen, operators are smart people. They have figured-out that they can solder faster wi
Electronics Forum | Thu May 19 05:25:54 EDT 2016 | buckcho
Hello, that's why some machines still use 2d for most of their algorithms and checks. They use the 3D on some special cases (like lifted leads). The full 3D machines are for me more complicated, because you can't use some simple 2d checks where appli
Electronics Forum | Tue Dec 15 09:26:37 EST 2020 | stivais
Have you tried cutting the leads shorter (or lift the connector slightly) so that they barely protrude at the other side of the PCB? Just for testing purpose, for mass production you should find a connector with shorter leads then. This should help w
Electronics Forum | Fri May 28 16:30:39 EDT 1999 | JohnW
| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect
Electronics Forum | Thu Nov 14 10:03:40 EST 2002 | davef
Doug, Ooooooooo. You're correct Vinny has to be talking about Rogers teflon boards. Vinny, There are many different types of PTFE based products. Generally speaking, PTFE has a melting point of 620degF and withstands solder reflow and HASL proce
Electronics Forum | Thu Mar 13 01:42:58 EDT 2008 | Sean
Thanks Real Chunks and Davef...Yours input is valuable to me. My inputs towards your question asked below: Questions are: * Why did you tell us the following? "This BGA is installed with heatsink (with hook at both side of the heat sink) manually b
Electronics Forum | Fri Sep 17 23:59:40 EDT 1999 | JAX
| | | HI everyone, | | | | | | We are using a Siemens ap-25 screen printer, in the past we have not had any problems with adhesive placement until a couple of weeks ago. It seems the x axis has decided that it should be set somewhere between .00
Electronics Forum | Wed Jun 13 03:37:06 EDT 2001 | ianchan
Hi mates, I did a recent shear test (destructive test), on a uBGA liken product, and noted the post-shear solder joint, had clean "smooth" visual appearance under the uBGA pad, however the matching pcb pad was clearly lifted clean. Question: 1) how
