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Pomona 4286 SMA termination, stainless steel body, 50 ohm, 18 GHz

Pomona Electronics

Pomona Electronics 4286 SMA termination 50 ohm 335 Vrms 18 GHz

SKU CH-EF0T-872CA

50 ohm SMA termination rated 335 Vrms up to 18 GHz with stainless steel housing operating from -85 to 257 °F

  • TypeMechanical Connectors
  • 50 Ω impedance ensures matched signal paths
  • 18 GHz bandwidth supports microwave applications
  • 335 Vrms rating handles high-voltage RF signals
  • Beryllium copper contacts deliver reliable conductivity
  • 85 °F to 257 °F operation suits extreme environments

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.

Highlights

  • 50 Ω impedance ensures matched signal paths
  • 18 GHz bandwidth supports microwave applications
  • 335 Vrms rating handles high-voltage RF signals
  • Beryllium copper contacts deliver reliable conductivity
  • 85 °F to 257 °F operation suits extreme environments

Specifications

BrandPOMONA
TypeMechanical Connectors

Questions about this item

What SMA connector size does the 4286 termination fit?

The 4286 is an SMA termination, so it mates with any standard SMA jack or plug using the 50 ohm interface.

How do I install the 4286 termination, and what step is often missed?

Thread the stainless-steel housing onto the SMA port until the beryllium-copper contact seats fully; the step often missed is using a torque wrench to avoid over-tightening.

When should the 4286 termination be replaced?

Replace it if the beryllium-copper contact shows wear, the stainless-steel housing is corroded, or the unit has exceeded the -85 to 257 degrees F operating range.

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