Electronics Forum | Fri May 06 07:58:33 EDT 2016 | cyber_wolf
Darby, I'm not completely sure I understand. Juki machines have what is referred to as a multi-head. The offsets between the heads are the same as the spacing between 8mm feeders. So the (6) heads all come down at once and "gang pick" from 6 8mm fee
Electronics Forum | Thu May 19 02:04:36 EDT 2016 | jpcwg
Located in Shenzhen China, the Silicon Valley of hardware, ALLPCB.com is a company specialized and experienced in manufacturing printed circuit boards of prototyping and low volume production. Through the years thousands of business customers and eve
Electronics Forum | Fri May 06 08:27:38 EDT 2016 | kahrpr
We have Samsung and havehad no problems with simultaneous pick ups with 201s 0r 402s. the feeders are durable and do not need much repair especially the sm feeders. The SME feeders have not been out as long so we will see so far so good. As with all
Electronics Forum | Thu May 12 00:18:55 EDT 2016 | darby
Sorry for delay - been flat out. Sr - I understand what you are saying. My concern is that combined with the head offsets and variations in pick points (i.e. having to teach feeder positions for very slight amounts like 0.05mm)then you cycle times wi
Electronics Forum | Tue Jul 05 15:21:46 EDT 2005 | russ
So your thermal cycling test is putting these solder joints into reflow (183C + if they are lead joints)? Must be quite the test! Tell us what pad sizing and spacing you are currently using.
Electronics Forum | Wed Jun 24 08:28:16 EDT 2020 | pickplace
Hi Jacobo, it would be importatn to know what kind of error the machine is displaying. Are the chips in paper or plasic tape? Did you check pickup coordinates and hight? Have you many false edge pick vision errors? Then I would switch off the tombest
Electronics Forum | Thu Nov 30 16:14:33 EST 2006 | darby
Maybe ask your customer where they got this idea from? It is possible they may have even got this idea from some white paper or article where they are trying to explain something else and show drawings with no solder between the pad and lead. It may
Electronics Forum | Tue Nov 28 09:21:58 EST 2006 | Michael Sanders
Is anyone aware of any articles, white papers, etc., that discuss the gap between the lead and the pad after a SM joint is soldered? In particular, I am looking for a formula for that "gap" for various components.
Electronics Forum | Tue Nov 28 09:37:39 EST 2006 | GS
Have you seen IPC-A-610 D ? regards GS
Electronics Forum | Tue Nov 28 15:41:51 EST 2006 | realchunks
Try IPC-SM-782.