Electronics Forum | Wed Aug 07 09:05:11 EDT 2002 | davef
N2 PPM vs %RH? With a firm grasp of the obvious, reflow oven manufacturers rig N2 ovens differently than non-N2 ovens. The N2 displaces O2. Usually N2 oven monitor something or other to give an indication of N2 ppm. %RH really isn't part of the eq
Electronics Forum | Thu Nov 30 16:18:28 EST 2023 | proceng1
We have a customer that at one point had a dozen LED boards that were all very similar in size. They used Aluminum boards and I found that the difference in thermal mass between the assemblies was negligible considering the largest difference was ac
Electronics Forum | Tue Mar 27 13:47:22 EDT 2018 | proceng1
I do have access to a DOS HELLER 1500. And we can just change RECIPEs without cooling down first. What is the message on the screen when you just try to change it from one RECIPE to another?
Electronics Forum | Mon Mar 29 11:51:55 EST 2004 | Claude_Couture
Hi all, Anyone familiar with BTU oven VIP-70. The control screen indicates that it is in IDLE mode. The recipe is running, but no heat is applied. The contactor for the heat is ON. All the electrical looks ok. I can't seem to be able to contact BTU,
Electronics Forum | Wed Feb 28 13:02:01 EST 2018 | proceng1
Ours says it needs to cool down, but if I put in into cooldown, I can load the next recipe right away. I don't actually have to wait until it cools.
Electronics Forum | Wed Mar 28 08:44:01 EDT 2018 | dph150
Here is a picture of my zone settings. let me know if you see something that might not be right. They are all the same for every recipes
Electronics Forum | Fri Apr 16 07:34:10 EDT 2004 | Claude_Couture
Ken, thanks for your answer, it is much better presented than what I was fed by our qc. By "calibrating TCs" I meant the readings the controller is displaying on the screen. So that would be the converter that we would check and calibrate. Thank you
Electronics Forum | Mon Aug 26 20:33:50 EDT 2002 | davef
Not as such. Generally, people tailor their profiles to produce glam solder connections on their boards. Search the fine SMTnet Archives for discussion on the factors affecting solder reflow recipes. What is the best way to get these PCB made to s
Electronics Forum | Thu Apr 26 08:27:30 EDT 2007 | ck_the_flip
If your product mix is similar in terms of thermal mass and componentry, find some standard setpoints (by doing a baseline profile) which will produce a thermal profile that's within the specs. of your solder paste and product. This approach usually
Electronics Forum | Thu Apr 26 08:29:37 EDT 2007 | pavel_murtishev
Good afternoon, We develop reflow profile ones and control it daily or when recipe changes after that. Modern reflow ovens are usually very stable. This means that your zone temperature set points won�t deviate from initial ones. You can calculate d
