This International Standard defines the standard interface dimensions for the type LC family of connectors.
More IEC standard pdf
IEC 62793 Ed. 2.0 en:2020
Protection against lightning - Thunderstorm warning systems
$164.00 $329.00
IEC 61837-2 Ed. 3.0 b:2018
Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures
$227.00 $455.00