Electronics Forum | Sat Dec 13 08:03:46 EST 2003 | Stefan Witte
The only part, which could cause component misplacement on the rotary heads of the Siplace machine is the vacuum valve. I don�t know the official name in the part catalog, but I use to name it plunger. The plunger is moved in and out by a miniature s
Electronics Forum | Tue Dec 16 06:42:51 EST 2003 | Kev
I am having problems achieving correct pre-heater temperatures with our Hollis solder wave. Our original "Verification Golden board" program uses a conveyor speed of 5ft per minute and pre-heat temps of 300, 350, 400 respectively. Our "golden Board"
Electronics Forum | Fri Jan 16 15:41:23 EST 2004 | patrickbruneel
David, You just provided enough material to start an endless debate in an unexplored field (acceptable impurities, levels and effect on reliability in high tin content (lead free alloys). High tin content alloys have a high affinity to metals like C
Electronics Forum | Tue Feb 03 06:52:45 EST 2004 | paul_bmc
About 2 years ago our company tried to go with a post reflow AOI inspection. This AOI was suppose to be able to inspect to a level class 3 product. **It is impossible** You cannot inspect for a heel fillet and inspecting for poor wetting is a very
Electronics Forum | Thu Feb 05 08:08:46 EST 2004 | stefwitt
To my point of view, you should be aware of some issues. Manual taping machines with a foot switch for tape advancement require quite a few adjustments before you start the job, like: Tape width adjustment, component rail adjustment, pitch setting,
Electronics Forum | Fri Feb 06 15:52:18 EST 2004 | pjc
SPM is superior in terms of technology and application. SPM has larger print area, up to 20� x 19", vs. 17.7� x 15.7� for the MicroFlex. MicroFlex is microprocessor controlled while the SPM has a PC. SPM can print down to 12mil (0.3mm) fine pitch no
Electronics Forum | Sun Feb 29 15:14:50 EST 2004 | stefwitt
Human resources or head-hunters may not ask these questions either. However, there are other ways to find out, if the applicant is fit for the job. I must admit, that raised with a different cultural background, it was particular difficult for me to
Electronics Forum | Mon Mar 01 20:53:28 EST 2004 | Ken
How does a fiducial work? I am going to venture a guess as how it ralates to the parts you are trying to place... A PCB fiducial is a landmark. The fiducial tells the machine where the board is located in the machine. A single fid can only deter
Electronics Forum | Mon Mar 08 19:41:31 EST 2004 | Ken
Robert, what you have provided is not a "profile". It is a "recipe" or "job". I have 4 BTU VIP98's. I have hundreds of recipes...Your temps look similar to mine....but what does that have to do with the "thermal profile" as experienced by the asse
Electronics Forum | Wed Apr 07 21:49:44 EDT 2004 | Ken
My favorite kind of calibration is where the machine learns what it did incorrectly. Then fixes itself! However, there are many types of machines that rely on human feedback as to the results of what it did. nozzle calibrations involve many factors
