SMA Male to SMA Male Lightning Arrester - DC - 3 GHz

Product Overview

This SMA male-to-male device provides inline surge routing on 50 ohm coaxial paths over the listed DC to 3 GHz span. Its serviceable 90 V GDT carries a 10 kA reference on the 8/20 us wave and transfers transient energy to the ground lug. The normal-operation RF loss is specified as 0.2 dB.

Core Trade-off: A replaceable gas-discharge format maintains a low-capacitance RF path. Its triggering profile is unlike that of a diode limiter, so evaluate the coaxial run, equipment interface, and bonding method before selection.

Protection Mechanism and Construction

• Protection Element: A replaceable 90 V GDT is installed in the main enclosure and referenced at 10 kA on the 8/20 us wave. Inspection or replacement can be completed with the cable assembly still connected.
• Grounding Path: The side ring terminal provides the bond to the site earth bar. Use a short practical conductor because its route affects transient energy delivered toward downstream equipment.
• Body: The inline body is machined brass with corrosion-resistant plating and fits a compatible coaxial cable route.
• Connector Interface: The SMA male interfaces accept compatible cable assemblies; use the applicable connector torque guidance.

Reference Technical Specifications

The following values are reference information for this SMA Male to SMA Male lightning arrester. Confirm them against the selected production configuration before installation.

Use the listed values as reference information and confirm the final configuration before deployment.

Engineering Comparison

• vs. Quarter-Wave Stub: A quarter-wave option is associated with a selected design frequency and narrow DC-grounded range. This configuration is specified from DC through 3 GHz for compatible multiband cable paths.
• vs. Diode-Based Protector: Diode limiters can introduce capacitance that affects the usable frequency or power range. This GDT unit lists 0.2 dB insertion loss and 100 W reference CW handling for appropriate RF lines.
• vs. DC Block Surge Protector: A DC block does not provide the same high-energy connection to earth. This device directs a transient toward its grounding terminal in applicable antenna-line installations.

Applications

• RF test equipment, radio module, GPS LNA: For RF test equipment surge protection, this SMA Male to SMA Male lightning arrester can be placed at a compatible cable position to route induced energy toward earth before it reaches associated equipment.
• Tower and Rooftop Installations: At a cabinet or shelter cable entry, the unit can form the grounded protection point in the selected transmission-line route.
• Multi-Band Radio Sites: The specified DC to 3 GHz range supports compatible legacy and current RF bands without changing the product configuration.
• Equipment Racks and Test Systems: Placed near a compatible equipment input, the device helps direct cable-coupled transients away from test equipment, instruments, or modules.

Installation and Grounding Notes

• Grounding First: For RF test equipment installations, connect the ground lug to the earth bar with a short practical lead. Avoid long or thin conductors because the earth-path layout affects installed protection.
• Mounting: Install the inline body at the selected cable-entry or equipment-side protection position and keep the grounding terminal accessible.
• Torque and Sealing: Tighten connectors in line with manufacturer guidance. At exposed interfaces, apply suitable weatherproofing tape or a weather boot.

OEM and B2B Support

• OEM Customization: For volume requirements, connector options, discharge choices, and plating preferences can be reviewed against the final request.
• Cable Assembly Options: Factory-terminated jumper assemblies with a pre-installed protection unit may be supplied for compatible applications.
• 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: The 90 V GDT has a 10 kA rating on the 8/20 us waveform. Inspect it after a major event and replace it if leakage is present or the hold-off test is unsuccessful.

Q: Will this SMA Male to SMA Male lightning arrester affect my DC - 3 GHz signal?

A: The listed values are 0.2 dB insertion loss and VSWR up to 1.25, supporting a low-impact RF path for compatible antenna-line use.

Q: Can I use this arrester indoors?

A: Yes. It may be installed at an equipment-side cable location or an entry point when an additional grounded stage is required. A SMA Male to SMA Male lightning arrester should match the selected cable interfaces and site bonding route. This RF surge protector is used with the stated 50 ohm configuration. The 3 GHz coaxial lightning protection range should be checked against the final RF assembly. For RF test equipment surge protection, locate the unit where cable entry, connector access, and the earth-bar connection can be inspected. A second SMA Male to SMA Male lightning arrester reference may be included in installation records. Review cable support, cabinet clearance, connector engagement, and weather sealing before commissioning. During maintenance, verify that the cable path remains supported and that the SMA interfaces can be reached without moving unrelated equipment. Inspect the cabinet entry, cable strain relief, bonding conductor, connector condition, and any weather sealing used at exposed locations. Record the selected protection position with the equipment documentation. If the radio module, test fixture, cable route, or earth-bar connection is changed, inspect the installation again before returning the line to service. These installation checks concern physical arrangement and maintenance access; they do not alter the listed electrical reference values or replace the final production documentation. Installation records should identify the protection point and bonding path. Review cable routing, panel access, connector condition, grounding continuity, and weather sealing during scheduled maintenance activities. Before service.