SMA-50J

The company has been specializing in the manufacture of RF coaxial connectors for over thirty years, boasting strong technical expertise. It was among the first to introduce state-of-the-art production and testing equipment from overseas, ensuring superior product performance and quality, thereby laying a solid foundation for expanding into international markets.

Keywords: RF coaxial connector / High-frequency amplitude- and phase-stable test cable

Category:

SMA-type series connectors

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SMA-50J

The SMA series is a compact, threaded‑type RF coaxial connector that complies with IEC 60169‑15. It offers advantages such as small size, long service life, wide frequency bandwidth, superior mechanical and electrical performance, and high reliability. Widely used in microwave communications, digital communications, aerospace and marine applications, microwave measurement, and military systems, it is the most extensively deployed RF coaxial connector.

Main Technical Features

Characteristic Impedance / IMPEDANCE		50Ω
Frequency range FREQUENCY RANGE	With flexible cable / WITH FLEXIBLE CABLE	0 - 12.4 GHz
	WITH SEMI-RIGID FLEXIBLE CABLE	0 - 18.0 GHz
Voltage Standing Wave Ratio VSWR	With flexible cable / WITH FLEXIBLE CABLE	≤1.15﹢0.02f(GHz)
	WITH SEMI-RIGID FLEXIBLE CABLE	≤1.10﹢0.02f(GHz)
Contact resistance CONTACT RESISTANCE	Center Conductor / CENTER CONDUCTOR	≤3 mΩ
	Outer conductor / OUTER CONDUCTOR	≤2.5 mΩ
Insulation Resistance / INSULATION RESISTANCE		≥5000 MΩ
Dielectric Withstanding Voltage / DIELECTRIC EITHSTANDING VOLTAGE		1000V
Insertion Loss / INSERTION LOSS		≤0.06 * sqrt(f(GHz)) dB
Temperature Range / TEMPERATURE RANGE		-65℃ ~ +165℃
Coupling Nut Torque Recommended		0.8 - 1.1 Nm
Durability / DURABILITY		500 CYCLES

Materials and Coatings

PART NAME		Materials and Coatings
Outer conductor / OUTER CONDUCTOR		Brass, gold or nickel plating, stainless steel passivation / BRASS, GOLD OR NICKEL, STAINLESS STEEL PASSIVATION
Center conductor CENTER CONDUCTOR	Pin / MALE	Brass, gold-plated / BRASS, GOLD
	Jack / FEMALE	Beryllium bronze, gold-plated / BERYLLIUM BRONZE, GOLD
Insulator / INSULATOR		Polytetrafluoroethylene / PTFE
Seal / SEAL RING		Silicone rubber / SILICONE RUBBER
Crimp ferrule / CRIMP FERRULE		Brass, gold-plated or nickel-plated / BRASS, GOLD OR NICKEL

Interface size

JACK
Codename	min.	max.
A	5.54	--
B	4.32	--
C	0.38	1.14
D	4.60	4.67
E	5.28	5.49
F	0	0.13
*G
H	0	0.41
J	2.92	--
P	--	4.178
Q	1.88	1.98
R	1.245	1.295

Note: For dimensions marked with an asterisk, the allowable deviation above the datum plane is less than 0.05, and below the datum plane is less than 0.18.