Electronics Forum | Wed Sep 15 12:07:50 EDT 1999 | Earl Moon
| | Hi, | | | | Can someone pls suggest to me the best reflow temperature setting | | for a force air convection oven. The details is as follow. | | 1) Heller 1700s | | 2) 12 zone---6 top and 6 bot | | 3) Solder paste --- Qualitek 691 non clean | |
Electronics Forum | Mon Aug 13 16:07:08 EDT 2007 | dyoungquist
We run double sided surface mount boards through our Heller oven without any parts falling off the bottom side unless they are too big/heavy. The trick we use is to set the bottom side temperature in the final 3 heat zones 10C-20C lower than the top
Electronics Forum | Wed Sep 15 07:43:12 EDT 1999 | Earl Moon
| Hi, | | Can someone pls suggest to me the best reflow temperature setting | for a force air convection oven. The details is as follow. | 1) Heller 1700s | 2) 12 zone---6 top and 6 bot | 3) Solder paste --- Qualitek 691 non clean | 4) board size :
Electronics Forum | Tue Sep 09 12:05:44 EDT 2008 | tonyamenson
First and fore most is to find your paste manufacturer spec sheets. Read it over several times and let it all sink in. Then call them with questions as they want to keep your business so their engineers want to help you use their product. I assume y
Electronics Forum | Wed Apr 01 12:26:37 EDT 2020 | proceng1
We have 3 Heller 1800 units. They run great. Our building is 208 3ph. One of ours is running 480v, so we bought a transformer to convert. I am not familiar with the other oven you mentioned.
Electronics Forum | Fri Sep 08 09:16:37 EDT 2006 | james
We are incurring problems with Film Chip Capacitors with reflow issues. Some of the parts are misaligning or not soldering on one end (almost tombstoning) . We left the parts in the dry cabinet till they were used. We tried both reflow ovens (hell
Electronics Forum | Tue Sep 15 01:16:32 EDT 2020 | kylehunter
We have the same issue. It was present with our old 1500 and is even more present with our newer 1800EXL. For us, it seems to be related to the blowers, not the heaters. If we are in cooldown or wakeup the issue is still there with the heaters off.
Electronics Forum | Wed Jan 14 08:03:50 EST 2004 | davef
Never heard of anyone doing this. What do the folk at Heller say? Heller Industries 4 Vreeland Road Florham Park, NJ 07932 Work: 973-377-6800 Fax: 973-377-3862 Other: www.hellerindustries.com Marc Peo at Heller is a frequent contributor here on S
Electronics Forum | Wed Aug 22 22:07:53 EDT 2007 | mdm4ua
Easy fix is put a drop of washable mask on the side of part before reflow. The mask dries before the solder reflows and holds the part in place. After reflow it washes away.
Electronics Forum | Wed Aug 22 09:59:06 EDT 2007 | slthomas
Are there long lags between print and place, and place and reflow? Could your paste be losing some of it's tack?
Reflow ovens for automated SMT PCB assembly, specializing in lead free processing and nitrogen reflow. The best convection reflow ovens on the market.
4 Vreeland Rd.
Florham Park, NJ USA
Phone: 973-377-6800
