Electronics Forum | Mon Dec 02 09:47:54 EST 2002 | davef
Most modern spec do not distinguish between process methods. So, there is no allowance "if you are using bla bla bla method, you should see ... . But if you are using bla bla de bla method, ignore that and look for ... ." Most specifications requi
Electronics Forum | Fri May 21 15:29:26 EDT 1999 | JohnW
Joe.. Sound's pretty neat trick..mind if I ask what type of comp's are on this board and the paste..? This baby (pig I think) has got a 244pin QFP right dam in the middle..!, so if ur flipin it 180 degree's are u using like a piece of Jot in line co
Electronics Forum | Thu Nov 21 15:09:29 EST 2002 | Bill Barthel
There have been a number of papers and articles on the subject as well as tutorials and workshops sponsored by SMTA, etc. I can send you a paper I presented in 1995 that may cover most of your questions. There are also many other resources that mig
Electronics Forum | Mon Oct 11 06:22:54 EDT 2004 | C Lampron
Jim, I also do not have any practical expeince at this time with the LF. I can only imagine that the reduced spread/flow of the LF would make the process window for intrusive reflow that much smaller. I think that things like pin to hole ratio and h
Electronics Forum | Tue Aug 14 16:23:31 EDT 2007 | stepheniii
I've never seen them used or even heard of them being used like this but you might want to look at http://www.sipad.com/ You will still have to work out other issues like how to keep the SMT on while you wave the LEDs. Maybe you can get these board
Electronics Forum | Wed Dec 19 11:12:05 EST 2012 | aj
have you considered intrusive reflow? I ran a product similar to what you are describing and the only way we could get sufficient holefill consistently was by this process.... there may be obvious reasons why you cant but worth a shot if you can- it
Electronics Forum | Mon Apr 01 03:55:59 EDT 2019 | robl
Hi Lee, Depends on the pitch, but 3 main options: 1) Use solder preforms and intrusively reflow https://www.indium.com/solders/preforms/ 2) Use a selective solder machine on smallest nozzle or Robot with fine tip. Our Versaflow 3/45 can handle the
Electronics Forum | Thu Oct 25 04:52:17 EDT 2001 | Vai
I'm running intrusive reflow. What happened was when the board went thru' the first reflow ( which is secondary side ), at Post reflow, I can see the solder joint quality is very good smooth and shiny. But when we proceed with the 2nd reflow, at Post
Electronics Forum | Wed Nov 20 03:52:16 EST 2002 | iman
Hello, need help on intrusive reflow process, thanks in advance to the experts and general info sharing :) need some help to obtain answers, to following questions: 1) PCB is FR4, 1.6mm thick, 4 layers, what stencil thickness (stencil design guide
Electronics Forum | Tue Aug 14 10:53:15 EDT 2007 | rgduval
Should be do-able. Check out a couple of things: 1. Temperature tolerance of the LED's. If they can't withstand reflow, then you won't be able to do it. 2. Height of the LED's versus the travel of your pick/place. If your pick/place head won't t
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