Electronics Forum | Wed Jul 20 03:10:45 EDT 2011 | umar
I have mount the 8 pcs SEVEN SEGMENT LEDS on the PWB side at SMT Process, after reflow the board test at customer side and facing some issues which is missing segment and also one segment founded dimmers compare to other segment. Data sheet of LEDs
Electronics Forum | Wed Jul 20 08:40:27 EDT 2011 | mosborne1
Umar - This is usually seen when the lead frame in the die attach is cut with a diamond saw instead of a lasar. We have seen this problem years ago from HP 7 segment displays. If you have Enviromental box (tenney box) you can temp cycle them from 0 d
Electronics Forum | Thu Dec 11 08:20:05 EST 2003 | liang
we ofen have the problem of the part missing.when problem take place .we found the segment sleeve is anomaly.we change the sleeve is ok!but we don't know what is wrong with the sleeve.who can help us ,thks!
Electronics Forum | Sun Dec 14 08:26:16 EST 2003 | liang
MR/MADANM STEFAN ,WE USE A PLASTIC PLUNGE.WE REPLACE THEM THREE MONTH.WHEN PART MISSED,WE CHECK THE VACUUM ,IT IS OK. IT IS ONE OR TWO SEGMENTS WHICH CAUSE PART MISSING.WE REPLACE A PLUNGER ,IT IS NOT OK.WHEN REPLACE A SLEEVE .IT IS OK.WE CHECK THE S
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 | Wed May 08 07:19:03 EDT 2019 | youngbuck
Hi Sankar, I have had experience with the SX and X2 so I'm not sure how similar ours is to yours but i can give you some suggestions. 1. As Thomas said you could do a vaccum check and make sure the 4007 nozzle has around the same settings as the ot
Electronics Forum | Tue Sep 02 15:35:55 EDT 2008 | modernprecison
I have a Siemens S-27 and I'm having occasional issues with 0201 components in particular. I'm using the 12 segment head and 902 nozzles with them. I'm making sure the magnet is clean of debris and the feeder is sitting flat. Most of the time they
Electronics Forum | Wed Dec 02 09:00:23 EST 1998 | Dave F
| I am interested in inspection machines working with comparation, the results that I need for inspections are missing parts, component offset, polarized components, etc. The machine can work in line or off line. | | Thanks for help. Sergio. | Serg
Electronics Forum | Wed Dec 22 14:21:13 EST 2004 | James Dornan of APE Inc
A little late but if this subject is still of interest the following paper from APE may be of interestwhen considering IR to Air Bath: HOT AIR versus IR and other convection Rework Systems HOT AIR is the most popularly chosen method of rework in th
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