Electronics Forum | Mon Dec 20 16:58:24 EST 1999 | Dave F
David: We build boards with BGAs wall to wall on both sides. May the issue you're concerned about is the thermal characteristics of your fabricated board. Good luck. Dave F
Electronics Forum | Tue Dec 14 03:26:09 EST 1999 | Chris May
Steve, Two good reference books to have are 1) SMT Soldering Handbook by Rudlof Strauss (ISBN 0-7506-3589-4) 2) Soldering In Electronics by R.J. Klein Wassink( ISBN 0-901150-24-x) Regards, Chris
Electronics Forum | Fri Dec 10 12:25:53 EST 1999 | Marlies Hanf
Hi. Placement machines use nozzles to pick up the components. I found the terms "suction nozzle", "vacuum nozzle" or simply "nozzle". Do the terms all mean the same or is there a difference? Are there also nozzles that don't work with vacuum?
Electronics Forum | Fri Dec 10 12:55:36 EST 1999 | Larry Johnson
Marlies, I have never seen a nozzle on any SMT machine that does not require a vacuum. As for your first question, I believe them to be all one in the same. Larry Johnson
Electronics Forum | Fri Dec 10 13:33:55 EST 1999 | JAX
Marlies, Larry's correct. The terminology used to describe the nozzle is normally brought about by the methods at which the machines generate the "vacuum". Good job Larry, it's like you just won Fuji's WHIZ-QUIZ!! Have fun all!!!!!!!!!!!
Electronics Forum | Fri Dec 10 16:32:55 EST 1999 | John Thorup
well... it depends on what you are placing. Many odd-form placement machines, like Chad or Jot, use some sort of mechanical gripper as a "nozzle" without vacuum. John Thorup
Electronics Forum | Fri Dec 17 19:07:47 EST 1999 | Dennis
There are two types of nozzles most commonly used nozzle is vaccum type. but when it comes to odd component which is not standard either plain form. must use machenical grapper to pick up the component
Electronics Forum | Fri Dec 10 09:47:52 EST 1999 | Larry
What does everyone use for stencil apertures on D Paks? What's the best way to keep them from floating during reflow?
Electronics Forum | Fri Dec 17 15:26:48 EST 1999 | Victor Salazar
We use a homeplate design with 80% coverage on the tab, and 100% coverage on the leads 6mil stencil. All of our stencils are laser cut electropolished. We have had good success with this.
Electronics Forum | Fri Dec 10 08:51:58 EST 1999 | Joe
Hi, Can anyone tell me when are bent leads too bent to be straightened again. I'm thinking about the strength of the lead where it meets the housing will be weakened the further you bend it. thanks.
