DS EN 50377-16-1:2012 Connector Sets And Interconnect Components To Be Used In Optical Fibre Communication Systems - Product Specifications - Part 16-1: Type Lf3 Apc Simplex Terminated On Iec 60793-2-50 Category B1.1 And B1.3 Singlemode Fibre With Titanium Composite Ferrule For Category C Specifies the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a terminated and assembled singlemode resilient alignment sleeve LF3 APC 8 degree