RJ9 Plug is 4P2C (4 position 2 contact, also backronymed as 4 position 2 conductor; often called RJ9 ,Normally also called RJ11 ) plug is the male type of modular connector commonly used for telephone cable twisted-pair applications, where the plug on each end terminated using the T568A or T568B pin/pair assignments that are defined in ANSI/TIA-568-C.2 standard.
These connectors are commonly used in telephone cable and other telephone applications unshielded twisted-pair (UTP), Most telephone communications today are carried over Category 3, with 4P2C modular plug crimped on each end.
B. Insulation Resistance: >500MΩ.
C. Contact Resistance:<20mΩ
2.Gold Plate Inspection:
TYPE II (99% pure gold minimum)
Grade C+(KNOOP HARDNESS RANGE 130~250)
Class 1(50 microinches minimum thickness)
A. Cable-to-plug tensile strength-20LBs(89N) min.
B. Durability:2000 mating cycles.
4.Material & Finish:
A. Housing Material: Polycarbonate(PC.) 94V-2(For UL 1863 DUXR2)
B. Contact terminal:Phosphor Bronze or High strength copper alloy [JIS C5191R-H(PBR-2)].
C. Contact plating:Flush 3,6,15,30,50 micro-inch gold plating over 100 micro-inch Nickel plated
D. Operation Temperature:-40 ℃ – 80℃
E. Use for telephone wire