Electronics Forum | Tue Jun 05 10:01:47 EDT 2007 | bartlozie
the temperature difference between solder and room temperature, So if you let the solder cool down, you need less energy then holding it on temperature + heating a bit up. 2. If you let the solder get to solid, you don't have oxidation. 3. If you l
Electronics Forum | Tue Oct 02 16:34:43 EDT 2007 | jmelson
Ungar used to sell a little tube of clear stuff that they called something like "tip anti-seize". I used it on Imperial irons, back in the days before electronic temperature control. The pure copper threads on the heating element would seize to the
Electronics Forum | Tue Jan 15 14:03:18 EST 2008 | patrickbruneel
Hi �Pb-Head� I agree with everything you say, except for your statement that alcohol based fluxes perform poorly with convection heat. The fluxes you tried might have performed poorly, but that doesn�t mean that all alcohol based fluxes perform poor
Electronics Forum | Fri Feb 01 15:09:43 EST 2008 | chef
Don't do it.!!!! Are you nucking futs? Why is pre-bake required? Are you producing in high humidity? Is the package of the device poroues enough to suck in moisture? Think, consider you will not get an even "bake", the outside of the reel will get
Electronics Forum | Mon Feb 04 10:17:39 EST 2008 | slthomas
Your oven no doubt compensated by reducing energy to your heaters so it might not be as bad as you think. I'd be more concerned about even heating than over heating. My opinion is that an out of calibration profiler result is better than no result
Electronics Forum | Thu Jul 10 10:25:05 EDT 2008 | gregoryyork
I guess the paste is Leaded hence the 220 Peak temp and the Sn100c is Eutectic at 227C so you need to be hotter to melt the HASL finish or you are relying on it alloying together with the paste which takes much longer. suggest running peak temp of 23
Electronics Forum | Fri Oct 03 16:22:38 EDT 2008 | alien
For plain old QFPs in small quantities, a temperature controlled heat gun + a decent soldering station can do the trick. In my case, Steinel HL 2010 E heat gun (handheld, but with a digital readout) to desolder. Clean up pads with solder wick. Solder
Electronics Forum | Sun Feb 15 16:57:11 EST 2009 | p4qmtto
Hi. We had a similar trouble in a same oven's model. In each one of the heat zones, you have a thermal sensor to avoid an over heat. All of them are conected in a serial circuit with the coil of the main contactor for the preheaters power. If anyone
Electronics Forum | Thu Mar 12 21:14:16 EDT 2009 | davef
Mask: * I/O connector contact surfaces * Bus connector contact surfaces * Configuration jumper blocks * Test points * Surfaces that contact heat sinks (heat sinks are removed prior to coating) * Board mounting holes * Adjustable potentiometers * P
Electronics Forum | Thu Apr 01 15:33:19 EDT 2010 | davef
"-How do these lint-free rags remove the flux that seeps under components = no matter its a no-clean material and we are removing for esthestics only." Don't think so ... Let's be clear. Low residue fluxes are benign only if: * Applied in amounts ac
