I took this picture under my scope, and I can't figure out what this is. Is it an SMD Zener Diode? A Capacitance Diode? Something else? I have a board I'm repairing and this component is missing from it so I'm trying to find a replacement. I'm not Sure if it's a code of .6 or 6 because i'm not sure if that dot is a decimal point or just a marking. Could someone help me identify this?