SMA Female to SMA Female Lightning Arrester - DC - 6 GHz

Product Overview

The SMA F-F lightning arrester is an inline GDT device for 50 ohm coaxial links operating from DC to 6 GHz. It uses a replaceable 90 V gas discharge tube and an M4 ring terminal to provide a route from a transient event to the site earth connection. In normal RF operation, the specified insertion loss is 0.3 dB.

This 6 GHz GDT RF surge protector for antenna lines combines female SMA interfaces with a serviceable protection element. The gas-discharge approach provides a low-capacitance path and has a triggering behavior distinct from diode-based protection. Selection should follow the cable arrangement, available earth connection, and final production configuration.

Protection Mechanism and Construction

• Protection Element: The central enclosure holds a replaceable 90 V gas discharge tube with a 10 kA reference rating on the 8/20 us waveform. It can be inspected or replaced without disconnecting the cable assembly.
• Grounding Path: A side-mounted ring terminal connects the device to the earth bar. Keep the grounding path short and practical because its routing affects the energy that can reach associated equipment.
• Body: The inline housing is machined brass with corrosion-resistant plating. Its form supports placement in a compatible coaxial route.
• Connector Interface: SMA Female to SMA Female interfaces accept compatible cable assemblies. Apply the relevant connector torque guidance during installation.

Reference Technical Specifications

The following data are reference values for this product. Confirm the selected configuration against the final installation requirement before ordering or commissioning.

The values in this table should be verified against the final production configuration and the intended equipment arrangement.

Engineering Comparison

• vs. Quarter-Wave Stub: A quarter-wave approach is associated with a selected frequency range and a narrow DC-grounded band. The stated DC to 6 GHz operating range supports compatible multiband cable paths.
• vs. Diode-Based Protector: Diode limiters can introduce capacitance that influences the applicable frequency or power range. The listed 0.3 dB loss, VSWR 1.35, and 100 W power values should be considered with the final system requirement.
• vs. DC Block Surge Protector: A DC block does not provide the same high-energy route to the earth system. This device directs a transient toward the grounding connection where applicable.

Applications

• Panel and test connections: The SMA F-F lightning arrester may be used for panel-mount equipment protection, test fixtures, and compatible CPE connections where an accessible grounded protection point is required.
• Cabinet or shelter entry: The unit can be installed at a relevant cable entry to establish a grounded point in the associated transmission-line route.
• RF modules and instrumentation: The 6 GHz GDT RF surge protector for antenna lines can be positioned near compatible RF modules or instrumentation to direct cable-coupled transients toward earth.
• Equipment-side protection: Place the device near the selected equipment interface when the cable route, panel access, and ground connection can be inspected.

Installation and Grounding Notes

• Grounding First: Connect the M4 lug to the applicable earth bar using a short practical lead. Avoid unnecessarily long or thin ground conductors.
• Mounting: Keep the inline housing accessible at the selected cable entry, panel, or equipment connection. Confirm that cable support and available service clearance suit the installation.
• Torque and Sealing: Follow connector manufacturer guidance when tightening SMA interfaces. For exposed installations, use suitable weatherproofing at the connector joints.

OEM and B2B Support

• Configuration Requests: For volume requirements, connector arrangements, alternative discharge options, and plating preferences can be reviewed against the final product setup.
• Assembly Options: Factory-terminated jumper assemblies with a pre-installed device may be supplied for compatible installation requirements.
• Packaging and Marking: Protective packaging, custom labels, and batch documentation may be requested.

FAQ

Q: How often does the gas discharge tube need replacement?

A: Inspect the 90 V element after a major surge event. Replace it when leakage is present or when it does not pass the applicable hold-off test.

Q: Will this device affect a DC to 6 GHz signal?

A: The listed values are 0.3 dB loss and VSWR 1.35 across the stated band. Confirm suitability against the final RF assembly and operating requirement.

Q: Can this device be installed indoors?

A: Yes. The SMA F-F lightning arrester may be installed at an equipment-side cable position or at an entry point where an additional grounded stage is required. Review cable routing, panel access, connector engagement, earth-bar connection, and service clearance before commissioning. For panel-mount equipment protection, confirm the final production configuration and installation layout.