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Description：
The D4 connector holds a single fiber in a 2.0 mm
ceramic ferrule. The D4 connector’s body is similar
in design to the FC connector, except for the smaller
ferrule, and a longer coupling nut. Properties and
applications of the D4 are likewise comparable to
the FC.

Features:    
•Zirconia ferrule    
•Precise dimension    
•Low insertion loss    
•High return loss    
•Convenience and ease of handling    
•Environmentally stable
    
     Application:    
•Telecommunications    
•LAN    
•CATV Networks    
•Active Device Termination    
•Industrial and Military    
•Instrumentation    
•FTTx

Specifications:
Insertion Loss: Single mode l≤0.20dB & Multimode ≤0.25dB
Return Loss: UPC ≥50 dB, SPC ≥55 db & APC ≥65 dB
Durability <0.20 dB typical change, 1000 mating
Operating Temperature: -40 to   80º C
Ceramic Ferrule Hole Sizes:
Single mode: 125.0 1/-0μm, Concentricity: ≤1.0μm, 125.5 1/-0μm, Concentricity: ≤1.0μm, 126.0 1/-0μm,
Concentricity: ≤1.0μm
Multi mode: 125μm, Concentricity: 1≤3μm or 127μm, Concentricity: 1≤3μm or 128μm, Concentricity: 1≤3μm