Electronics Forum | Fri Oct 22 19:52:47 EDT 1999 | Garth Monlux
I need to know the recommended pad layout for a 44r package. The part is an atmel flash AT49F004. Is there a standard that I can look at?
Electronics Forum | Mon Oct 25 15:38:00 EDT 1999 | Dave F
Garth: There is no standard. Try the component supplier for a first cut at the pad layout. They should know better than anyone. Good luck. Dave F
Electronics Forum | Wed Oct 13 14:42:39 EDT 1999 | John Thorup
Brian You're quite right. I frequently break this formula. The source recommends it as an almost assured success rather than an absolute. Given all the variables involved Steve should use it as a reality check and then just see what works. John T
Electronics Forum | Wed Dec 10 10:05:07 EST 2003 | davef
We do not have experience soldering to the PVD surface you plan to use. We use Titanium [Ti] stiffeners in wave soldering and our wave equipment manufacturer uses Ti fingers, nozzles, pump blades, and other parts, because solder doesn�t stick to Ti.
Electronics Forum | Thu Aug 12 18:06:09 EDT 2004 | SR
May I ask what component types you are using and who the suppliers are? FYI - If the components have exceeded their shelf life, they may have oxidized too much for soldering using low activity fluxes. Thanks and best regards, SR
Electronics Forum | Tue Aug 24 14:01:12 EDT 2004 | davef
Indy: How is this situation different than the last time you posted: http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=29371
Electronics Forum | Fri May 13 15:01:29 EDT 2005 | GEB
Hi, The brightest ones that I use are Luxeon LEDs which are rated at 5W, which is pretty bright for an LED, you can't look at them when they're on. Heres the link http://www.luxeon.com/gallery/?filter=luminaires
Electronics Forum | Mon May 23 16:36:27 EDT 2005 | dphilbrick
What is your application / need. I believe I could get you SMT LED's brighter and more cost effective than any of those.
Electronics Forum | Tue May 24 03:53:52 EDT 2005 | Rob
Hi Doug, Can they be mounted on standard FR4 PCBs & reflowed at Lead Free temperatures? Cheers, Rob.
Electronics Forum | Mon Jun 06 04:32:05 EDT 2005 | Rob
Yes, Loctite 3880. It works out at about $160 for a tube of 30ml. It can be dispensed or printed. We found you needed a lot less than with solder as it doesn't wick or spread much.
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