Electronics Forum | Mon Feb 13 06:03:25 EST 2006 | grantp
Hi, Does it really matter what temp the oven runs at as long as the PCB's are profiled correctly? I mean we run boards through all the time to check profiles, so as long as that's ok, would it matter what the oven though the temps where? Regards,
Electronics Forum | Wed Oct 24 13:27:13 EDT 2007 | hussman
Ah, see Steve, I was right. It depends Marcin. If you use the same temps in each zone for all your product, vary you converyor speed. This will negate any waiting time between profiles. Slowing the speed will decrease your Delta-T to an acceptabl
Electronics Forum | Mon Jul 23 12:12:57 EDT 2001 | kennyhktan
Good day! As we all know the normal recommended solder paste(Sn62/Pb37) reflow profile time is around 40~60sec above the temperature of melting point. Now I'm setting my peak temperature at the high site of solder paste recommended spec. due to metal
Electronics Forum | Wed Jul 10 14:14:21 EDT 2013 | benreben
hi all, i have purchased an used vapor phase and i can't make a constant profile. the profiles depend on the time i wait between two batch... the only difference that i include is the chamber temperature i don't understand why the chamber temperat
Electronics Forum | Tue Feb 13 06:43:39 EST 2018 | ameenullakhan
Attached is one more profile we have tried with high reflow time. The issue with before and this profile is reduced a lot. But not eliminated.
Electronics Forum | Fri Jun 12 07:14:36 EDT 2015 | gabinocf
Thanks by your response, at this moment I have problems in a Lead Free process the issues that i have are solder peaks, by my understanding this conditions is due to lack of flux, bad temperature profile or the dwell time is too long. My concern is,
Electronics Forum | Wed Apr 02 10:51:17 EST 2003 | kmorris
Myu: Did you have to change your reflow profiles when you changed from 609 to 709? What ramp rate & time over liquidus are your profiles at?
Electronics Forum | Mon Oct 08 09:38:27 EDT 2007 | Paul M.
right.... Worthless, time consuming data collection hog-wash. Just like that nit-picking profile development crap. Waste of time, all of it. Me? I'd rather be drinking.
Electronics Forum | Tue Mar 11 14:19:24 EST 2003 | Chris Lampron
Good Afternoon, We have found that the occurance of tombstones is usually related to other parameters. Board design, placement accuracy, paste tack time and thermal profile are the most common. We do use a 2% silver paste to process 0201 components
Electronics Forum | Thu Jan 27 20:36:13 EST 2000 | Dave F
HJ: Your best chance of running your boards with a single profile is with ovens from the established suppliers (ie, BTU, Conceptronics, Heller, Vitronics, etc). They are experienced in robust control system designs. Stepping aside from that, consi