Raymond,

The Elecraft boards comply with ROHS.

You can use leaded solder. The solder used on the Elecraft boards is non-leaded, but leaded solder will mix with it just fine. I have used it many times. The problem with hand soldering with non-lead solder is that it does not flow well, so I stay away from it for my work.

73,
Don W3FPR

On 8/10/2016 10:12 AM, Raymond METZGER wrote:
Hello Elecrafters,

I have decided to install KPAIO3MDKT on the K3S, I'm just starting to build,
which means soldering one electrolytic capacitor on two existing pads on the
KPAI03 module board.
I don't know it the Elecraft modules - or all PCB devices in the USA - use
leaded or non-leaded solder. Anyway, can I use my leaded solder to do this
job  ?

My soldering iron and my leaded solder haven't been used significantly since
I finished my K2-100 and my KAT100 in 2007, so that my solder has been
bought before no-leaded solder became the norm (at least) in Europe.
Thank you for your help



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