Electronics Forum | Sat Jun 12 04:06:33 EDT 2004 | Steve
Hi, Anybody has the experience or information of mounting the SMD 0402 on solder side of PCB by adhesive (apply by stencil printing) and then wave solder the 0402? Best regards.
Electronics Forum | Mon Aug 29 18:14:20 EDT 2005 | OverTheHill
Good day, We use Loctite 3616 for securing SMD's to the PCB before wave. On rare occasions, we have to remove and replace the secured part. Our operators are having a diffucult time removing parts (large QFP's, etc). My questions to this forum: 1)
Electronics Forum | Tue Nov 22 17:08:03 EST 2011 | mikenagle
I am looking for process suggestions. We want to use a pin transfer system to deposit adhesive to hold bottom side SMD's in place. We will place SMD's and through hole power parts on the top side and then run through a wave solder machine. Are ther
Electronics Forum | Wed Nov 23 07:30:44 EST 2011 | scottp
Are you stuck with pin transfer for some reason? Screen printing is more repeatable and easier to maintain.
Electronics Forum | Wed Nov 23 09:38:52 EST 2011 | blnorman
More agreement with screen print adhesives. Back in a former life time we did do pin transfer on one of our product lines. If you had to go with pins, make sure your adhesive rheology is suited for it. Different adhesives are designed for specific
Electronics Forum | Wed Nov 23 07:38:49 EST 2011 | davef
We agree with the points made by ScottE above. Additionally, most printers are not heavily loaded. So, you wouldn't have to buy another machine, give-up floor space, purchase and store peculiar tooling, etc. We think Darby does pin transfer. Maybe h
Electronics Forum | Wed Dec 15 09:00:07 EST 2004 | russ
All of the SMT adhesives that I have used are non-conductive by themselves. I assume that the solder joints are formed by wave soldering?
Electronics Forum | Wed Oct 14 13:52:59 EDT 1998 | Bill Schreiber
Dear Sanjay, An important issue involved when stencil printing adhesives vs. solder paste is: How do you clean the stencils after printing? Do you need two machines? Two chemistries? Two waste streams? What are the potential environmental impacts an
Electronics Forum | Mon Apr 01 12:07:25 EST 2002 | slthomas
* What material are you using? Loctite 3609 * What is your cure profile? In excess of the 90-120 seconds at 150C that Loctite recommends. * Dot dimensions and tip? 27g. conical tipped needle for the 0603's. I started with a 14 mil dot which loo
Electronics Forum | Fri Apr 30 08:28:39 EDT 2004 | davef
Roger Saunders, President Saunders Technology, Inc wrote a fairly unbiased paper that compared different thermocouple attach methods. You can probably find it on their site. In it, about gluing thermocouples, he says: There are two general classes
