Electronics Forum | Tue May 26 20:18:09 EDT 1998 | Justin Medernach
| | | | I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered and
Electronics Forum | Tue May 26 15:27:36 EDT 1998 | Dave F
| | | I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered and s
Electronics Forum | Sun Dec 19 17:45:35 EST 1999 | Bill Petlock
Clarissa, Buying used equipment should not be risky if you do your homework. As M COX said, you should find out if the manufacturer still supports the machinery but don't take everything they tell you as gospel. Remember, they want to sell you a new
Electronics Forum | Mon Mar 19 21:55:23 EDT 2018 | stephenj37824
You've got (to my mind) 3 wholly different > classes of machine there. > > Essemtec is upper > entry level maker that is increasingly > differentiating itself from the competing > machines in its class by focusing on 3d > assembly/dispensing op
Electronics Forum | Sat May 01 09:55:59 EDT 1999 | Bob Willis
| Hi all, | | We're starting up tests for pin-to-paste and, well, things could be better. We're testing different pastes and we're testing different apertures rules and, well, we're still testing. It's coming close and we're getting pretty good
Electronics Forum | Fri Sep 09 21:09:20 EDT 2011 | hegemon
Wow, a lot of questions here...and you are definitely doing some "tough sledding". To the point. If you have 3 - 22" zones you'll have to calc your belt speed and temperatures to match the solder paste requirements with regard to flux activation an
Electronics Forum | Sun Mar 18 17:46:10 EDT 2018 | spoiltforchoice
You've got (to my mind) 3 wholly different classes of machine there. Essemtec is upper entry level maker that is increasingly differentiating itself from the competing machines in its class by focusing on 3d assembly/dispensing options. The Puma als
Electronics Forum | Sat Mar 06 07:47:03 EST 1999 | Scott Cook
| | | We are currently looking into purchasing a high volume, medium mix production line. We are considering several different vendors and I would like to know if current users of Siemens equipment are happy. Are the machines maintenance intensive?
Electronics Forum | Wed May 05 10:57:25 EDT 1999 | Kevin Hussey
| | | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | | | My question's are really : | |
Electronics Forum | Wed Apr 28 11:16:45 EDT 1999 | Steve Gregory
Hello all, I read about Steve's headache a few articles back and I'm really interested by his tip. However, I'm still wondering why square apertures release solder paste better than round ones. For the same volume of paste, the surface area of th
