Electronics Forum | Wed Apr 25 07:57:36 EDT 2001 | wbu
Steve: Try to find something that�s common to all your skewed parts. We haven�t had much trouble with it except for some MELF diodes a couple of years ago which didn�t look well aligned but made no trouble with specs. Better suited pad design solved
Electronics Forum | Wed Oct 06 20:42:50 EDT 1999 | Mike Cooper
Yes. We use high speed dispensing (PanasonicFA)as an integral part of our PCB assembly. Our business is automotive electronics and our typical product is 2-sided smd with some through hole. We assemble topside first, through hole, then bottomside. Th
Electronics Forum | Wed Jul 03 10:30:48 EDT 2002 | davef
First, it's difficult to image anyone [that's fallen off the turnip truck more than once] saying 'there is absolutly no problem' about anything in our business. Second, I have never heard of this �U� shaped 0402 aperture thing. [As someone mentione
Electronics Forum | Thu May 01 13:58:14 EDT 2003 | bremerg
Gentlemen, Does anyone have any failure information on IRC, CHP2-100-R500F (5 OHM, 2W, 1%) resistors. We have experienced two failures on the same circuit board where the metalization on the component separated from the component causing an open ci
Electronics Forum | Mon May 19 09:29:59 EDT 2003 | bradlanger
Dave, We are using Kester Easy Profile 256 No clean Sn62Pb36Ag02. The oven itself is a Dima SMRO-0252 which is a short oven, it has 13" of preheat, 13.5" of soak, 6.25" of reflow, and 10" of cooling on the way out of the oven. We are soldering multi
Electronics Forum | Tue May 31 11:50:22 EDT 2005 | Stefan
There is quite some difference with a fixed head versus a head mounted to a X/Y gantry. If the head can move, feeder tables and board are fixed. If the head is fixed, feeder tables and board have to move. Spinning a component around on a vacuum nozz
Electronics Forum | Fri Feb 24 12:34:13 EST 2006 | Ticky Ticky Tembo No Sarimbo Hari Kari Bushkie Perry Pem Do Hai
Stepped stencils are usually the result of some dumb customer's requirement. 2 examples I can give: 1.) Customer demanded 50% wick-up the termination of a MELF component. No way you can get that from reflow. Played around with a drastic "step up
Electronics Forum | Tue Oct 17 17:27:08 EDT 2006 | adlsmt
Define "pretty easily". Did anyone ever do whatever is making them fall off now before? In most casses where a component "falls off" then someone implements a totally subjective test to make sure the rest of the parts wont "fall off" they damage a lo
Electronics Forum | Thu Nov 30 15:19:56 EST 2006 | CK the Flip
Mike, dude, I feel your pain. Hearing stories like this makes my blood boil! It's almost as ridiculous as a customer who told me to put more solder paste on a MELF component to overcome noise issues - he used more solder paste as antennas to overco
Electronics Forum | Wed Feb 21 08:33:37 EST 2007 | CL
Good Morning Everyone, I just wanted to get a feel for what other Contract Mnufacturers are doing. Do you allow a production PCB assembly with glued SMT components to be wave processed more than once? (e.g. the first pass did not produce acceptable
