Electronics Forum | Mon May 13 03:01:23 EDT 2019 | peterchan
Hello, sir. We are a SMT equipment manufacturer from China. We have a hot-press soldering machine that can change your current situation of manual soldering on PCB board. In addition, we have a better reflow oven, the upper and lower two cold tempe
Electronics Forum | Thu Jan 08 16:21:05 EST 2004 | Bill
James: The ovens can be calibrated to help get this a little closer. In the computer box are 3 cards (alike) attached to the motherboard. They are called IPS-7 cards. On these cards are 2 potentiometers to calibrate the T/Cs for the heat zones. There
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 | Fri Feb 10 12:21:44 EST 2006 | Cal Kolokoy
DaveF is correct in saying that TAL is not the best metric to use in reflow soldering. That is why paste manufacturers give such a wide range; typically 30 to 120 seconds. The peak temperature is more important, especially in the mixed Pb and Pb-F
Electronics Forum | Thu Jan 08 11:06:40 EST 2004 | russ
If I read this correctly you have two identical ovens that were setup the same ie zone temps, fan speeds etc... when you ran the same board through each of them one showed a lower board temp. Is this correct? Is the temp of the board 7 deg. lower t
Electronics Forum | Fri May 29 16:14:23 EDT 1998 | Jason Gregory
Thanks for the advice, Steve. Hard-headed people in high-ranking positions spells trouble.
Electronics Forum | Mon Feb 13 13:43:54 EST 2006 | pjc
You will begin to de-wet at a high TAL and actually likely see all of the conditions you list.
Electronics Forum | Mon Jul 27 13:59:11 EDT 1998 | Robert Steltman
We are about to run our first BGA devices and would appreciate some confirmation on a few points. First some details: PCB & Device: ============= 1) 16 layer (4 power, 4 gnd, 8 signal) 2) gold on nickel finish 3) ceramic BGA with eutectic balls Refl
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 | 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 :
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