In stock

SMA Connector (Male)

RF-SMA-M

A SMA connector terminated onto the end of a coaxial cable.

Type: Adapter
Connectors: SMA

In-depth technical details

SMA is a 50-ohm RF connector with a threaded coupling nut (not a BNC-style bayonet lock), torqued with a wrench for consistent high-frequency performance, rated to 18GHz and beyond.

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Connector anatomy

SMA connector

01 Centre pin Carries the RF signal, surrounded by a dielectric and then an outer shield that holds the 50-ohm impedance constant.
02 Threaded coupling nut Screws on rather than snapping like BNC's bayonet lock -- torqued with a wrench for consistent performance at high frequency.
03 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
04 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

From the published standard

How it works

SMA and N-type connectors are used on high-frequency coaxial runs such as wireless antenna feeds, and their matched impedance (typically 50 ohm) preserves the signal across the join. SMA is a small, finger-tightened threaded connector for light-duty use; N-type is larger and mechanically stronger, used on thicker cable or outdoor installations exposed to vibration.

Typical impedance: 50 ohm
SMA: Small, threaded, hand-tightened — light-duty RF
N-type: Larger, more robust — thicker cable and outdoor use

This information comes from published sources about this type of product, not from the supplier.

Technical specifications

Type	Adapter
Connectors	SMA

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