Electronics Forum | Wed Dec 15 08:15:10 EST 2004 | pjc
UP78 is an old product. Data sheets are no longer posted on the web site. OM-5100 is the replacement. Try calling tech support and they should e-mail you the UP78 data sheet that will show the profile curve. Jersey City, NJ Tel: 201-434-6778 http://
Electronics Forum | Thu Feb 17 15:54:35 EST 2005 | JB
Most of our profiles are a variation of one another. Depending on the thicknes and density of the PCB, we make the nescessary changes and then we profile it, to make sure it meets our specs. Check this out: http://www.smtnet.com//forums/index.cfm?
Electronics Forum | Thu Mar 24 09:53:03 EST 2005 | aj
Doug, We are getting ready to do some trials at the moment. I have profiled the oven and achieved the Required Temps. that would be desirable. I dont envisage any problems what so ever aslong as who ever is doing the profile fully understands the
Electronics Forum | Mon Apr 11 06:37:59 EDT 2005 | amstech
As long as you have a continuous profile with required soak and dwell periods, the zone lengths do not matter. For lead free, usually ramp to peak is preffered.that is with minimum soak (you can not avoid soak anyway. You can achieve the profiles irr
Electronics Forum | Mon Jun 13 04:26:00 EDT 2005 | Joris Groot koerkamp
For the lead free reflow process we tested with our Vitronics 500smr oven. To reach the high temperature of the lead free profile was no problem. We are not using an active cooling system so the pcb's are maby to hot wen the leaving the oven. Can an
Electronics Forum | Wed Aug 03 04:33:39 EDT 2005 | aj
if you have enough free space at the edge of the board you could try some titanium supports, I have to use these on some products to prevent warping. Also, in relation to profile and I know there are a lot of variables to consider but is 225 not a b
Electronics Forum | Wed Aug 24 08:57:39 EDT 2005 | stepheniii
Why is your big heavy BGA profile your fastest one? I'm guessing because it's hotter therefor faster? To achieve some kind of "balance" with the others. But you want those boards to get more heat, so you don't blance higher temps with faster belt, yo
Electronics Forum | Sat Oct 01 01:25:30 EDT 2005 | ck
Sorry theres a mistake on previous question. It should be lead free component termination but non lead free solder alloy Sn63/Pb37. The reflow profile i am using : Soaking temp. 120 to 160 deg C; time 90 to 120 sec. Peak temp. 215 to 225 deg C; time
Electronics Forum | Mon Oct 17 17:52:10 EDT 2005 | russ
Lead Free profiles can be achieved on 4 zone ovens on relatively simple boards (I did this for a year). The 4 zones can be a bear to get right for a really optimum profile. Assemblies with significant Delta T designs can be nearly impossible with 4
Electronics Forum | Fri Jan 13 12:12:48 EST 2006 | jimk
we have 4 bottom IR heaters and a 2 zone bottom Quartz heater (2 lamps/4 lamps) and 1 convection heater above zone 1 IR. we have very tight restrictions from customer and I could send profile view to your email if possible
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