SSMA-Type RF Coaxial Connectors — High-Frequency Precision in a Compact Form

The Evolution of Miniature RF Connectivity

In the early days of high-frequency design, SMA connectors set the industry standard for reliability and performance.
But as systems grew smaller and frequencies climbed beyond 26 GHz, engineers needed a new solution — one that could deliver the same stability in half the space.
That solution became the SSMA-type RF coaxial connector.

The SSMA connector series represents the evolution of RF interconnects — combining the rugged mechanical interface of the SMA family with a miniature form factor capable of supporting frequencies up to 40 GHz.
This makes SSMA connectors ideal for microwave systems, 5G RF modules, and aerospace communication platforms where space and precision must coexist.

Compact Size, Maximum Frequency

The SSMA RF coaxial connector is 70% smaller than a standard SMA while maintaining the same 50 Ω impedance and low VSWR across its operating band.
Its threaded coupling mechanism ensures a tight, repeatable connection, resistant to vibration and mechanical stress.

Engineers choose SSMA connectors when system density is high — in radar front-ends, microwave radio modules, and satellite communication payloads.
The connector’s low insertion loss and excellent return loss help preserve signal clarity even at 40 GHz, making it one of the most precise miniature connectors available.

Each connector is built with gold-plated beryllium copper contacts and PTFE dielectric, ensuring stable electrical performance and long service life in demanding conditions.

Engineering the Details

Every detail of the SSMA-type RF connector supports high-frequency consistency.
The precision-machined interface ensures exact center conductor alignment, reducing phase shift and maintaining consistent signal reflection.

Unlike snap-on designs such as SMP, the threaded SSMA coupling gives users secure mechanical locking — essential in applications where maintenance is infrequent but stability is critical.

Available in straight, right-angle, bulkhead, and cable-mount versions, SSMA connectors integrate seamlessly with semi-rigid, flexible, or low-loss RF cables.
This flexibility makes them a go-to choice for microwave test equipment, communication transceivers, and avionics modules.

Real-World Applications

The SSMA-type connector has become a key enabler across multiple high-frequency industries:

5G Infrastructure: Compact interconnects for antenna and radio front-end modules

Aerospace RF Systems: Lightweight connectors with high vibration resistance

Microwave & Millimeter-Wave Devices: Stable performance up to 40 GHz

Radar & Defense Equipment: Durable, low-loss interconnects under thermal stress

Test & Measurement: Precision calibration ports and RF instrumentation

Whether in a 5G small cell, a satellite transceiver, or a microwave test rack, the SSMA connector guarantees reliable electrical performance where signal loss is not an option.

Performance and Materials

Frequency range: DC to 40 GHz

Impedance: 50 Ω

VSWR: typically 1.2:1 or better

Coupling: Threaded interface for stable, repeatable connections

Materials: Stainless steel or brass with gold plating, PTFE insulation

Compliance: RoHS and REACH certified

Each connector undergoes strict mechanical and RF testing, including insertion loss, VSWR, and environmental cycling, to meet aerospace and defense-grade standards.

Compact Power for the Next Generation

The future of RF coaxial connector design is clear — smaller, faster, and more precise.
As industries push toward higher frequencies, SSMA connectors will remain one of the most reliable solutions for compact, high-density RF systems.

Their compatibility with SMA connectors ensures backward integration while opening doors for 40GHz millimeter-wave designs.
In modern communication, every decibel counts, and the SSMA connector makes sure none are lost.

Supply, Support & Customization

We provide a complete range of SSMA-type RF coaxial connectors, including jack, plug, adapter, and board-mount configurations.
Custom impedance matching, plating finishes, and mechanical modifications are available for specific project requirements.

Our manufacturing facilities follow ISO quality control, ensuring repeatable precision and batch consistency.
We also offer stock sourcing, BOM kitting, and short lead times for production or R&D.

With a proven track record in 5G, radar, and aerospace programs, we help engineers achieve their high-frequency design goals efficiently and reliably.