Electronics Forum | Fri Jan 21 00:51:56 EST 2005 | WDLau
Hi All, could anyone advise me what we need to pay attention to if we will be usingthe Sn Pin plating as lead free requirement in SMT reflow process, is it a need to increase the Temp Profile by 10~15 Degree c as Sn with Melting ppoint 232C, Please
Electronics Forum | Fri Jan 06 09:39:35 EST 2023 | micropak
In newer machines, after changing a motor you have to do an "Axis Home Calibration". Once I changed Z-Axis belt on an SM-482 and it refused to successfully do "Axis Home Calibration. Then the solution was to remove the belt, rotate the motor pulley a
Electronics Forum | Wed Jun 05 12:22:45 EDT 2002 | Bob
No. Placement force is fine. Also boards have been inspected prior to reflow using microscope with no evidance of misplaced solder balls. The ramp rate has been reduced to acceptable limits, typically .8 - 1.5 degrees per sec. Outgassing from eithe
Electronics Forum | Thu Aug 11 03:56:11 EDT 2005 | md
Guys, I have a 2.4mm pcb 8layer with a lot of copper on board. I am having some problems with solder not travelling up through the holes. Looking from the bottom of the board it looks fine . Also, To measure temp. of board through preheat zones
Electronics Forum | Mon Oct 16 10:07:11 EDT 2006 | realchunks
Wow, 15 degrees C is too much. Is this a new problem or new oven? If it's a new problem several things you can check out. Thermocouple placement may have got knocked into the wrong spot, or it could be dirty. I've seen this happen after a PM and
Electronics Forum | Mon Nov 20 11:58:16 EST 2006 | Rob
We try and do it all (Vac pack, dessicant, indicator card, MSL level, PBT, end termination material etc.) however it throws a spanner in the works if you pull a manufacturer's sealed pack from stock and the vacuum has gone where an edge of a tray has
Electronics Forum | Thu Mar 14 07:22:22 EDT 2013 | fredcalkins
This problem has become a real issue with the tacky silicon used in many LEDs. Cree has recomended that the pull off angle be changed for the cover film as mentioned by the previous commentor. With these new silicon LEDs they are recomending teflon o
Electronics Forum | Mon Mar 30 12:55:16 EST 1998 | Justin Medernach
| Hi, | We have encountered de-wetting issues with gold plated components( SMT LEDs ). | The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). | The rest of the components on the boards are not havi
Electronics Forum | Mon Apr 24 04:23:56 EDT 2006 | TA
Hello guys, I am Looking for a oven with the following specifications. Can any one suggest me the best suitable model. Thanks ========================================================== - heating length 2500mm - zone top/bottom 7 - forced convection
Electronics Forum | Thu Dec 08 13:34:46 EST 2016 | spitkis2
We are currently experiencing with our SMD Solder > Reflow Equipment on Shooting-Up Zones (Zones > 3,4,5,7 & even Cooling Zone). PV exceeds about > 5-10 degrees with the SP. (ex: SP=140deg, actual > PV = 145deg & higher). Our equipment undergo a
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