Electronics Forum: zones temperature (Page 1 of 33)

Best reflow temperature

Electronics Forum | Wed Sep 15 07:34:49 EDT 1999 | Edmund

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 : 159mm X 159mm

Re: Best reflow temperature

Electronics Forum | Wed Sep 15 10:55:21 EDT 1999 | Scott S. Snider

| 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 :

Re: Best reflow temperature

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 :

Re: Best reflow temperature

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 | |

Re: Best reflow temperature

Electronics Forum | Thu Sep 16 12:06:29 EDT 1999 | Scott S. Snider

| | | 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

Omniflo 5 high temperature warning

Electronics Forum | Thu Sep 04 02:43:09 EDT 2008 | benefon

Thanks This error only occurred with one oven profile with the reflow zone temperature set at 270�C. Perhaps it really has to do with the exhaust pull as the oven is operating very near its temperature limit with this profile. I will check that. Tha

Omniflo 5 high temperature warning

Electronics Forum | Wed Sep 03 07:39:19 EDT 2008 | pjc

You may not be getting enough exhaust pull, so the cooling modules over temp. Try swapping blower motors to isolate that before buying one. STANDARD AIR OPERATION: - Load-end: 150 cfm (255 m3/hr) at the 4� (102 mm) stack (minimum requirement) - Unlo

QFN welding problem by reflux oven 10 zones

Electronics Forum | Wed Feb 12 14:38:18 EST 2020 | SMTA-Alex

There are several areas you can check. Your profile is very fast. You reach the peak at around 3 minute mark. That's not enough time for the fillet to form. Try to slow down your belt speed to around 90-95, to give it more time. Also, your temperatur

Heller 1706EXL increased thermal cascade on last 3 zones

Electronics Forum | Mon Sep 27 19:45:25 EDT 2021 | jdengler

Are the zone fans all working? I have had some odd temperatures when a fan starts to go out.

Heller 1706EXL increased thermal cascade on last 3 zones

Electronics Forum | Mon Sep 27 16:52:48 EDT 2021 | aex

During production the temperatures on the last 3 zones are approx. 20F higher than the setpoint. The other zones are operating within spec. We checked power, I/O, SSR's, thermocouples, and exhaust, but the issue remains. We did not check resista

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