Electronics Forum | Thu Dec 16 20:41:56 EST 1999 | TNT
Hey C.K, If you are looking for inspection of the solder paste before reflow, there are many types of inspection: 1.Paste height measurements at random positions 2.3D inspection with shadow contrast capabilities based on an autocad format 3.3D inspec
Electronics Forum | Tue Dec 14 11:13:43 EST 1999 | Chris May
Paul, I have (as many have) come across this problem due to misregistration of resist at the PCB fab. You didn't say if these boards are inexpensive double sided or costly multis. I know this shouldn't make a difference on quality but I would tend t
Electronics Forum | Mon Dec 13 05:43:27 EST 1999 | Wolfgang Busko
Hi Steve, 20 mil pitch shouldn�t be that problem nowadays. In your case bridging and poor wetting seem to go hand in hand. For the poor wetting try to eliminate it by using different paste (higher activated) and work on your profile. Coplanarity also
Electronics Forum | Thu Dec 09 18:21:20 EST 1999 | Boca
Mike, Russ is right, no 'normal' wave machine will solder PCB's with 1" long lead length. I have seen waves modified to clear up to 5/8" leads, but the deeper the wave the uglier things get. They get uglier in that a lot more dross is produced, con
Electronics Forum | Fri Dec 10 10:49:24 EST 1999 | Mike F
Some of our boards have over 700 LED's, so looking for the long leads is the most accurate way to check polarity. Also, not all LED's have a flat side and tinted domes can make it difficult to see the internal structure. Auto insertion didn't work, f
Electronics Forum | Wed Dec 08 10:10:41 EST 1999 | John Thorup
Hi Dave I think you just provided the key to understanding the problem. By your description you are talking about a CBGA (ceramic). These typically have balls composed of 10/90 Sn/Pb which melts at a higher temperature than the 62/36/2 Sn/Pb/Ag (or
Electronics Forum | Wed Dec 01 14:01:46 EST 1999 | Michael Bryant @ SMTnet
SMTnet.com is issuing a Call for Papers for future issues of its popular SMT Express newsletter. The SMT Express is a monthly periodical featuring electronics manufacturing solutions and insight from engineers, managers, and sales professionals, as w
Electronics Forum | Thu Dec 02 11:42:03 EST 1999 | John S.
Dick, My company made the transition from thru-hole to SMT about a year ago. We've been building thru-hole boards successfully for years, but our customer requirements have forced us into the transition. Wolfgang made a very good comment. Start s
Electronics Forum | Mon Nov 29 16:36:31 EST 1999 | Curtis T.
Jason, We have been running both the high pressure and the ultrasonic washers for several years and there is no comparison. The ulrtasonic (smartsonic) does a great job on all the normal pastes, and when we changed part of our production to a new ep
Electronics Forum | Wed Nov 17 15:01:44 EST 1999 | Doug Philbrick
I am a Siemens person myself but you won't get 23", you can get 20 though and I believe you could feed in a 23" board length wise. If your parts fit in a 20" area 80F4 is the way I would go. My second choice would be MYdata. They are the large board
We are a global electronics manufacturing Solutions provider ....Our company supplies new and used SMT equipment, spare parts, consumibles, ESD supplies and services to a wide range of EMS companies.
Equipment Dealer / Broker / Auctions
Parque Industrial Nogales No. 5297 Zapopan
Jalisco, 14 Mexico
Phone: 523316044491
