Electronics Forum | Thu Mar 08 12:40:54 EST 2001 | Ralph Merk
We are currently using 0402 resistors and capacitors in our production process. Our equipment is as follows: - DEK 265 - Siemens S25/F5 - Vitronics XPM520(5 zones) - 2% silver solder Alpha WS678 The problem is that randomly some 0402 capacitors are
Electronics Forum | Wed Apr 12 09:20:57 EDT 2000 | C.Long
anyone any ideas how to minimise my DPM as regards tombstoning..i have checked oven profile..appeture size on my stencils..placement machine etc and still problems.???????????
Electronics Forum | Wed Aug 25 16:42:32 EDT 1999 | Dave
| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is
Electronics Forum | Tue May 07 07:55:33 EDT 2002 | Sir Alexandr
Our SMTproduction has next troubles : 1. irregular 0603-components in tapes (different solder shapes) makes vision errors on placement devices 2. big solder amounts makes pickup and placing errors 3. some tapes delivery delays , so production halts f
Electronics Forum | Tue Dec 26 08:44:56 EST 2006 | mmjm_1099
Silly question but you do have this flagged as a polarity part correct?
Electronics Forum | Wed Dec 27 12:48:35 EST 2006 | pima
ok I will check out all your advise. thanks alot
Electronics Forum | Wed Dec 27 02:27:41 EST 2006 | _____
Vision Type 12 may work also. You may want to try vision type 20 with backlight calling out the leads. Or you could use a black nozzle and try VT:180.
Electronics Forum | Tue Jan 02 02:30:18 EST 2007 | _____
Ahh yes, 254. Don't give up on the other vision types. 254 can give you skewing as well. Your width and height are awfull close. Even with the 0.5 tolerance it is using the tolerance and saying that it is OKAY. Maybe what you measure is 1.8mm for wit
Electronics Forum | Sun Dec 24 15:30:07 EST 2006 | pima
hello Everybody I would like to ask you for advise. I'm fighting with correct placing one of capacitors in TNT-A package at CP-6 machine. Size of this component is: L=3,4 mm W=1,7 H=1,7 Its Tantalium with J-lead. I use for this component vision type
Electronics Forum | Sat Dec 30 19:02:19 EST 2006 | mika
This type of component packages works best with vision type: 254 - irregular. Measure the total package length including the leads. Also set the body dimension x-y tolerances to at least 0.35mm and the the pick up x-y tolerences to 0.5mm in the part
