LPF Site Supporter
- May 9, 2011
Flux does more than help get through the layer of oxide that covers most of the metals we want to solder to. It's also very important for heat transfer. I use flux core solder most of the time but when I'm doing something delicate that I don't want to apply heat to for any longer than absolutely necessary, soldering a laser diode to a driver for example, I'll add extra flux (no clean flux pen) to help make the connections cleaner and faster. If you're doing fine pitch SM soldering flux is an absolute must. Rosin core, or any other core, solder just won't cut it.Rosin, being a good solder flux, rosin core solder is your friend as well. I have a flux pen, but only use it when I need to apply solder to an area that won't normally take it well.