Electronics Forum | Tue Jul 29 10:53:58 EDT 2008 | pcbbuilders
Some profiles can be difficult to get exactly, so I was wondering what effect a slight deviation might have.
Electronics Forum | Mon Jul 28 16:48:54 EDT 2008 | pcbbuilders
my oven has a built in profiler, it works fairly well, but it can not predict changes. my main concern was about the time right before reflow. i know that's where the flux is activated and i was worried that i may be spending too much time at the tem
Electronics Forum | Fri Aug 01 21:10:35 EDT 2008 | leo_dektec
You can keep only the 5th zone as the reflow zone. And lower the first two zones to keep a good ramping rate. Meanwhile,please note the ting temperature in software or control panel is not the exact temperature in your PCB, you'd better get a KIC or
Electronics Forum | Sat Aug 02 08:06:11 EDT 2008 | pcbbuilders
Is there a limit to the time that most components can stay at temperatures around 130-200 deg c? if i slow the time, the first 4 zones will be at this temp for about 5 minutes in no lead process. i am concerned that some chips wont be rated at this t
Electronics Forum | Mon Jul 28 14:30:22 EDT 2008 | grics
Take a look at this. Remember, these are only guidlines and can not replace any paste specs. As Real Chunks said, a profiler will be of HUGE help. We use this to determine what our top side temps are and to see if we have any problems with heat sen
Electronics Forum | Sat Jul 26 07:42:49 EDT 2008 | pcbbuilders
I am not very concerned about production time, but it is always a thought! Quality is more importnant of course. We have 2 different pastes, with almost identical requirements. We can get close to their profiles, but i am worried that i am spending
Electronics Forum | Mon Aug 04 09:30:16 EDT 2008 | grics
If you have concerns, you can look at the datasheet for each component or contact one of their application or materials engineers and find out what the components are rated for...process-wise. IE, how long can I be in the oven with this part, at what
Electronics Forum | Tue Jan 31 10:59:55 EST 2006 | carterhoward
Hi All, I�ve been doing some research on the issue of running lead-free solder paste and leaded solder paste through reflow at the same time. The point with this would be to process all standard leaded components with Lead paste while also processi
Electronics Forum | Wed Feb 14 13:12:12 EST 2018 | dph150
I have a Heller 1800S reflow oven the thing runs fine but when I have to change profiles the oven will have to be cooled down to room temp before it will change. Has anyone seen this or know how to fix it? Thanks, David
Electronics Forum | Fri Dec 16 18:37:10 EST 2005 | mdemos1
Hi. I am trying to understand Tg and how it relates to reflow. With the higher temperatures of lead free, we have been looking toward laminates with a Tg of 180 instead of the current 140. My question is a little more general. In either lead free
