Electronics Forum | Fri Dec 08 21:23:16 EST 2006 | Harsha
I am seeing a problem of flux droping on the PCBA during reflow. This is a pb free process and I am using KOKI pb free paste with 8 zone (and some 9 zone) reflow ovens. Line throughput is about 10,000 boards/24 hours. I suspect that the exhaust is no
Electronics Forum | Wed Jul 03 10:50:06 EDT 2019 | rgduval
An 8 zone oven will give you better thermal control over the whole process. It's useful for lead-free soldering, or for boards with varying thermal loads/shadowing, etc. You can make a 5 zone work for lead free, provided the boards don't have signi
Electronics Forum | Sun Jul 21 10:33:53 EDT 2019 | reckless
I use a lead free 3 zone essemtec oven which I love. It's on the smaller side (wish it was even smaller). It works fine in our application. Maximum width is 300mm and only uses 5-6kwh average (25A max). Made in Switzerland. For some reason I don
Electronics Forum | Thu Dec 11 08:22:26 EST 2014 | emeto
The longer the oven, the better. You will have much more capabilities in creating the precise profiles the way you want them(with10-12 zone oven). I have worked with ovens from 2 to 12 zones and the difference is huge. In my opinion try to get a 10zo
Electronics Forum | Wed Dec 10 16:14:37 EST 2014 | jimpat
The 300 degrees is the temperature as measured at the sensor. The actual air temperature just above your PCB may actually be much less. If the oven is properly calibrated then the 300 should represent air temperature at the board but I have seen ma
Electronics Forum | Mon Dec 22 18:10:44 EST 2014 | sreejhu
What do you mean by solder in ROHS. Can you please explain me little bit. Is that really important while doing lead free process. Also, please tell me wether a 8 zone (4 bottm and 4 top) reflow oven with 300 degree max.. Is good to do the lead free
Electronics Forum | Wed Dec 10 16:58:53 EST 2014 | sreejhu
Hello, yes you are absolutely correct. I agree with your point. Last week,I personally checked out my board on Heller 1088 which is a 8 zone reflow oven (4 on top and 4 on bottom) and the soldering came pretty nice. So comparing with that situation
Electronics Forum | Fri Jul 25 23:01:04 EDT 2008 | chip_flip
What paste are using? You should referance the manufactures time and temperature specification. Running lead-free in a 5 zone oven can be done with out a problem but it is not production friendly. If you are concerned with through put I would look fo
Electronics Forum | Tue Feb 01 10:25:24 EST 2005 | Scott Baker
Jay - I read your report and was interested to see that you ran your evaluation on a Heller 1500 5 zone. We have been hearing for some time that a larger machine (7 zone min)with higher temp heaters and fan motors would be required. Is yours a "hi t
Electronics Forum | Mon Nov 01 10:44:03 EST 2004 | Denis
If you need to loook at lead free ovens then you owe it to yourself to look at Manncorp. You all know our name but did you know that for 30 years we have scoured the earth to bring you high quality low cost choices in SMT equipmenmt? Look at the ne
