RF coaxial N female connector for 1/2" foam dielectric feeder
cable, N male clamp connector for 7/8 cable
The peak power rating of an N connector is determined by voltage
breakdown/ionization of the air near the center pin. The average
power rating is determined by overheating of the center contact due
to resistive insertion loss, and thus is a function of frequency.
Typical makers' curves for a new clean connector with a perfect
load (VSWR=1.0) give limits of ≈5000 W at 20 MHz and ≈500 W at 2
GHz. This square root frequency derating law is expected from the
skin depth decreasing with frequency. At lower frequencies the same
maker recommends an upper bound of ≈1000 V RMS. To achieve reliable
operation in practice over an extended period, a safety factor of 5
or more is not uncommon, particularly when generic parts may be
substituted, or the operating environment is likely to lead to
eventual tarnishing of the contacts.
Connector Parts: Materials: Plating Finish
Body: Brass: Nickel or Silver or Sn/Zn/Cu
Female Pin: Beryllium Bronze or Phosphor Bronze: Gold or Sliver
Insulators: PTFE: N/A
Clamp Gaskets: Silicone Rubber or Synthetic Rubber: N/A
Durability Mating: 500 Cycles min.
|Working Voltage||1000 VRMS(max at sea level)|
|Dielectric Withstanding Voltage||1500 VRMS(min at sea level)|
|Contact Resistance||Inner: 1.5 milliohms(max)|
Outer: 0.2 milliohms(max)
|Insulation Resistance||5000 megohms(min)|
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