Product Specification

High-Performance HUADA SBMA-KFD3 RF Coaxial Connector for 28GHz Applications

The SBMA-KFD3 connector is optimized for high-frequency applications, supporting frequencies up to 28GHz. Its characteristic impedance of 50 Ω ensures efficient signal transmission. Whether used in radar systems, microwave circuits, or other communication equipment, the SBMA-KFD3 delivers reliable performance even in demanding environments.
With a temperature range spanning from -65°C to +125°C, the SBMA-KFD3 remains operational across varying conditions. It boasts a dielectric withstanding voltage of 675 V, ensuring insulation integrity. Additionally, its 500 mating cycles and 0.76 N disengage force make it suitable for frequent connections and disconnections. HUADA’s SBMA-KFD3 connector combines compact design, reliability, and ease of maintenance, making it an excellent choice for modern communication systems.

Key Features of the HUADA SBMA-KFD3 Connector

Frequency Range: The SBMA-KFD3 operates across a wide frequency spectrum, from DC (direct current) up to an impressive 18 GHz. Whether you’re dealing with baseband signals or high-frequency microwave transmissions, this connector has you covered.
Temperature Resilience: Designed to withstand extreme conditions, the SBMA-KFD3 remains functional in temperatures ranging from a chilly -55°C to a scorching 165°C. So whether it’s a frosty mountaintop or a desert installation, your connections stay reliable.
Pin Diameter: The connector’s pin diameter is a precise 0.38 mm. This attention to detail ensures optimal signal transmission and minimizes losses, especially critical in high-frequency applications.
Voltage Rating (Dielectric Withstanding Voltage): The SBMA-KFD3 can handle up to 500 Vrms (root mean square voltage). This robust dielectric strength ensures insulation integrity, preventing electrical breakdown even under high voltages.
VSWR (Voltage Standing Wave Ratio): With a VSWR of 1.15:1, the SBMA-KFD3 minimizes signal reflections. A low VSWR translates to efficient power transfer and reduced loss, crucial for maintaining signal quality.
Connector Type and Geometry: The SBMA-KFD3 features a straight SMA female (jack) connector. Its geometry ensures straightforward installation and compatibility with various setups.
Termination Style: You’ll find this connector ideal for cable mounting with a 4-hole flange. The secure termination simplifies installation and maintenance.
Materials Matter: Body Material: Stainless steel with a passivated finish, ensuring durability and corrosion resistance.
Center Contact Material: Beryllium copper with a gold finish, promoting excellent conductivity.
Insulation Material: PTFE (polytetrafluoroethylene), known for its high dielectric strength and low loss characteristics.
Outer Contacts Material: Brass, plated with gold and nickel for reliable performance.
Practical Considerations: Cable Compatibility: The SBMA-KFD3 works seamlessly with cables of different diameters: 0.47", 0.86", and 0.141".
Contact Resistance: Low contact resistance (3 mΩ for the center contact and 2 mΩ for the outer contact) ensures efficient signal transfer.
Insulation Resistance: A whopping 5000 MΩ—your signals stay isolated and interference-free.
Insertion Loss: The insertion loss remains minimal, adhering to the formula ≤ 0.06 × √(F (GHz)) dB.

Technical Features Table: