Electronics Forum | Thu Apr 15 11:13:24 EDT 2004 | pjc
Sn corrosion effects were studied for stainless steels, coated stainless steels, titanium, cast iron, and other materials. This study can be found in the SMT Library under "Equipment Impacts of Lead-Free Soldering" Electrovert uses a Melonite coating
Electronics Forum | Thu Apr 15 20:55:36 EDT 2004 | Ken
Try: Tungsten, tungsten carbide, ceramics like boron-nitride or how about pyrex glass? Glass blowers could make "hooks" that connect to a cross bar. I would NOT use aluminum (even if anodized). Try stainless steel 316. 303, 304 do not have enough
Electronics Forum | Fri Apr 16 08:49:07 EDT 2004 | Chris Lampron
Hi Barry, Your best course of action is to perform a thermal profile and determine exactly what the times/temps are in these locations. Try to match your profile to the recommendations of your solder paste. (Time between 130-160, Time over 183 and m
Electronics Forum | Thu Apr 22 12:27:47 EDT 2004 | barry
I placed thermo's at 2 of the problem devices. Soak (time 150 to 180) 100 sec. Time above 180 =80 secs with 208 deg. peak. The solder appeared to flow at these pads, but little to no adhesion to the joint.Total time in oven was 5 min. All other joint
Electronics Forum | Fri Apr 16 04:19:28 EDT 2004 | denis_s
Hi, I've a problem with a BGA. I've the impression that the balls broke then there is a too big mecanical stress on the PCB. I lost some dBm and when I press on the BGA I measure the good value! It's like the balls are take off the BGA or PCB and wh
Electronics Forum | Wed Apr 28 23:18:09 EDT 2004 | Grant Petty
Hi, Ours are inline, and depending on how you have the conveyers, you might need to use the data sheets to work out placement. If your running the conveyers behind the machine, then most of the machine is in front of the conveyer, so they use more s
Electronics Forum | Tue Apr 20 06:39:12 EDT 2004 | Ian White
Andy Tyco Electronics can supply these parts. In the USA contact Tyco Electronics in Willow Grove PA. (215) 657 6202 and ask for Service and Support. In UK please contact Tyco Electronics EMEA in High Wycombe ; 01494 464088 And ask for Operations De
Electronics Forum | Tue Apr 20 03:24:44 EDT 2004 | michael
I'm looking for a system that will manage all the un-formal "know-how" of the differant processes (smt, prep., insertion, wave, mec.assy., etc., etc.) alog production/assembly line. Can some one direct me to such a system? Send some references? Any
Electronics Forum | Mon May 31 04:06:16 EDT 2004 | johnwnz
You know you'd think that wouldn't you but the only tiem I knew the vendor had changed something was when the silver started to fall off the boards!... you can tell I wasn't chuffed Now I have to say I do prefer Dunkin's to Krispy but I can't say I'
Electronics Forum | Thu Apr 22 12:46:41 EDT 2004 | Mark
What type of chip bonder you use? I use Loctite 3611... part #25410 on my stencil screening and use epoxy cleaner, air hose and that takes care of our issues. If you use alchol it just hardens the epoxy so make sure its cleaned out good before restor
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