Specifications

Interface Type SMA threaded (MIL-STD-348)

Impedance 50 Ohm

Frequency Range DC – 18 GHz

VSWR 1.05:1 typ. at 3 GHz

Insertion Loss 0.06 dB typ.

Contact Resistance ≤3 mΩ center, ≤1 mΩ outer

Dielectric Withstand 500 VRMS

Mating Cycles 500 cycles

Body Material Brass, nickel or gold plated

Contact Material Beryllium copper, gold plated

SMA MALE Connector

SMA Family

SMA (SubMiniature version A) is the most widely used RF connector in the industry, offering a threaded interface that provides a secure, low-reflection connection from DC to 18 GHz. Its compact size, 50-ohm impedance, and broad frequency range make it the default choice for WiFi equipment, software-defined radios, cellular antennas, GPS receivers, and RF test instruments.

Typical Applications

WiFi equipment, SDR dongles, cellular antennas, GPS receivers, RF test instruments, LNA and amplifier connections, laboratory coax assemblies.

Gender & Polarity Note

Check the product datasheet for gender and polarity details. RF connectors are available in male (pin), female (socket), and reverse-polarity (RP) variants.

Cables Available with SMA MALE

Select a cable type to see all connector pairings and pricing.

1.13

1.13MM • DC – 6 GHz

RG178

1.75MM • DC – 3 GHz

RG174

.1 INCH • DC – 3 GHz

RG316

.1 INCH • DC – 6 GHz

RFC100A

.1 INCH • DC – 6 GHz

RFC195

.195 INCH • DC – 6 GHz

RFC240

.240 INCH • DC – 6 GHz

RFC400

.400 INCH • DC – 6 GHz

RG405

.086 INCH • DC – 20 GHz

RG405_BLUE

.086 INCH • DC – 20 GHz

RG402

.141 INCH • DC – 20 GHz

RG402_BLUE

.141 INCH • DC – 20 GHz

RG58

.195 INCH • DC – 1 GHz

LMR195 Times

.195 INCH • DC – 6 GHz

LMR400 Times

.400 INCH • DC – 6 GHz

LMR240 Times

.240 INCH • DC – 6 GHz

LMR400 ULTRA FLEX Times

.400 INCH • DC – 6 GHz

RFC400 ULTRA FLEX

.400 INCH • DC – 6 GHz

RG142

.195 INCH • DC – 6 GHz

RG400

.195 INCH • DC – 6 GHz

RG316DS

.1 INCH • DC – 6 GHz

LMR100 Times

.1 INCH • DC – 6 GHz

1.37

1.37MM • DC – 6 GHz

LMR240 ULTRA FLEX Times

.240 INCH • DC – 6 GHz

RFC240 ULTRA FLEX

.240 INCH • DC – 6 GHz

LMR200 Times

.200 INCH • DC – 6 GHz

RGU178

.06 INCH • DC – 6 GHz

Frequently Asked Questions

What frequency range does the SMA MALE connector support?

SMA connectors are rated DC – 18 GHz. The effective upper frequency of a cable assembly is limited by the lowest-rated component — either the cable or the connector. Always verify both are within spec for your target frequency.

How many times can a SMA connector be mated and unmated?

SMA MALE connectors are rated for approximately 500 mating cycles. Exceeding this can cause wear on the contact surfaces, increasing insertion loss and VSWR. For applications with very frequent connects and disconnects, consider a connector rated for higher cycle counts.

What torque should I use to tighten a SMA connector?

SMA connectors should be tightened to 3–5 in-lb (0.34–0.56 N·m) using a torque wrench. Over-tightening can damage the mating threads and distort the center contact.

Are the SMA connectors on CoaxRF assemblies weatherproof?

Our standard cable assemblies use high-quality connectors suitable for most indoor and sheltered outdoor applications. For fully weatherproof outdoor installations, we recommend applying self-amalgamating tape over the connector junction to prevent moisture ingress.

Do CoaxRF cables with SMA MALE connectors ship assembled and tested?

Yes. Every cable assembly — including those terminated with SMA MALE connectors — is hand-assembled and continuity tested before shipping. Cables ship free within the US from our US facility.