Pomona Electronics 4286 SMA termination 50 ohm 335 Vrms 18 GHz

4286 SMA termination for RF systems

The Pomona Electronics 4286 is a 50 ohm SMA termination rated to 335 Vrms and usable from DC to 18 GHz. It uses beryllium copper contacts and a stainless steel housing with a dielectric insulator. The part suits RF engineers and technicians terminating open ports on test equipment, antennas or transmission lines. It meets the mechanical connector class for general-purpose RF applications.

Replaces worn or missing 50 ohm loads

This termination upgrades setups that currently rely on improvised loads or damaged factory caps. The jump is worth it when measurements demand a precise 50 ohm match up to 18 GHz and a 335 Vrms voltage ceiling. It also fits maintenance kits where a standard SMA plug load is specified but the original item is lost or out of calibration.

Stable from -85 to 257 degrees F

The termination maintains its impedance and voltage rating across the full operating temperature range of -85 to 257 degrees F. Stainless steel housing and beryllium copper contacts resist thermal cycling without loosening or degrading the dielectric. This makes it reliable for sustained outdoor or chamber use where temperature swings are continuous rather than brief.