Electronics Forum | Thu Jan 29 00:12:39 EST 2009 | grayman
Hi Armando, I think you have to buy a bigger reflow let say 7 zones to get the correct profile. The reason you are getting that problem is due to short profile time. What is the size of your board? What is the composition of your solder paste? Ple
Electronics Forum | Thu Jan 29 06:29:33 EST 2009 | sachu_70
There are two profiles available for the Pb-free process: (1) RSS and (2) RTS. In your case, you should try a solder paste that supports RTS profiles. A minimum of 7 zone Refow Oven would be fine on the Pb-free process. However, you may still try by
Electronics Forum | Fri Feb 17 09:02:21 EST 2006 | russ
proper pad geometries, accurate placement, and good reflow profile. Are you having problems right now?
Electronics Forum | Thu Dec 14 21:53:07 EST 2006 | davef
Use the thermal recipe suggested by YOUR paste supplier, as the starting point.
Electronics Forum | Tue Dec 12 01:52:05 EST 2006 | hemu_me
As we have vitronics oven(SMR610A) made in dec,1997,which has 5 heating zones and 2 cooling zones. For Lead free soldering what should be our baseline for low/medium boards.we have gathered profiles from various paste manufacturers,however we don't k
Electronics Forum | Mon Feb 02 09:22:55 EST 2009 | ck_the_flip
Everyone's telling you setpoints, but yet, we haven't seen a thermal profile from you. It'd help if you can provide this, and using everyone's recommended setpoints, determine if your profile is meeting: 1.)Time Above Liquidus 2.) Peak 3.) Ramp
Electronics Forum | Thu Jan 29 16:51:57 EST 2009 | gregoryyork
Hi Small ovens work fine if the settings are correct and I seriously doubt 55cm/min is right. Profile it and speed down to around 35cm/min. Increase first zone to around 170 keep second at 208 but increase last to around 280 BUT profile to check it
Electronics Forum | Thu Feb 16 12:41:50 EST 2006 | fredericksr
Hey folks, I was interested in any information that you might have on tombstone reduction when using a lead free solder and profile. Thanks for any input that you may have! -Russ #x
Electronics Forum | Wed Oct 07 15:44:43 EDT 1998 | CW
There's a good article on lead-free assembly of mixed technology in the May issue of SMT Magazine (pg. 52)
Electronics Forum | Wed Jan 28 21:47:56 EST 2009 | padawanlinuxero
Hello! I am having trouble with the new changes from lead joint to lead free joint, we are working on change to lead free, I am using a 3 zone oven reflow, the zone temps are : zone 1 zone 2 zone 3 (top and bottom) 128 208 260 th
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