N-Male Crimp LMR-400 Belden 9913 Connectors are Milled Brass with Nickel Plating for Durability Velocity of Propagation: 86 % nom. / Dielectric Strength:10000 V minute / Corona extinction: 5 kV / Voltage Rating:3700 V Max. / Operating Temperature: +70 C - Min. Operating Temperature: -20 C