On Mon, 23 Mar 2015 19:46:19 -0700 (PDT), you wrote: >Thank you Tom and Harvey! I'll try again with higher temperature (800 or >even more higher till it melts) as well as adopt Harvey's suggestions. >Result will be reported in this thread.
Ah, no, more temperature is not always what's needed. Too cold and it never melts. Too hot and it damages the board and what you're soldering. For leaded solder, 600 degrees is fine for small sensitive parts, 700 degrees for standard parts, and you almost never need 800 degrees. Try a few joints with the solder and just solder a few pieces of wire together, say 22 gauge or so. That gives you the practice you may need for lead free solder (behaves differently). > >I used lead-free .022 in 700 degree. Temperature is one of a few factors I >haven't adjusted in those attempts for not damaging the board. > 800 degrees is a bit too hot. There's a bit of a touch to it, as to how to solder and how not to. You want the solder to "flow" and to "wet" the joint as if it were water. I'd see what the melting point of your particular lead free solder is, and then see what the recommended iron temperature is as well. Harvey >Also I've found CircuitCo version in Jameco Electronics. > >On Monday, March 23, 2015 at 5:25:56 PM UTC-7, Harvey White wrote: >> >> On Mon, 23 Mar 2015 16:56:58 -0700 (PDT), you wrote: >> >> > >> >> >> >> >> >> >> >> >> > >> >I just checked my settings. I have my iron set to 430C / 806 F and >> haven't >> >touched it since soldering that JTAG connector last week. Yeah. So very >> >hot. Don't leave it sit on the board at that temp. I figured a fast dab >> at >> >high temp is better than letting it sit at lower temp though. Maybe I'm >> >wrong. Like I said, I'm not a pro with the soldering, but it worked for >> me >> >on the first try. Before I got my nice soldering iron I had problems >> >getting connectors soldered onto another board because my iron wasn't >> >getting hot enough. I don't have that problem anymore. :-) >> > >> >My solder is Kester 44 Rosin Core Solder 60/40 .031. >> >> OK, several things here: >> >> 1) 63/37 is eutectic for solder, and has the lowest melting point. It >> goes from liquid to solid and does not have a plastic phase (good). >> >> 2) 700 degrees is normal, and 600 is used for sensitive devices. >> >> 3) the amount of power that your tip can deliver (not necessarily the >> temperature) determines the size of the joint you can heat and >> successfully solder >> >> 4) clean is the key, a freshly tinned tip (clean and can transfer heat >> well) is much better than an oxidized tip. >> >> 5) better to use a brass sponge than a wet one. Less thermal shock to >> the tip. >> >> Harvey >> >> > >> >Tom Olenik >> >> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
