Thermax RG400/U Coaxial Cable 190cm SMA Male Female RF Microwave 50 Ohm

Thermax RG400/U Coaxial Cable 190cm SMA Male Female RF Microwave 50 Ohm

This is a Thermax RG400/U coaxial cable assembly, approximately 190 cm (about 75 inches) in length, terminated with an SMA male connector on one end and an SMA female connector on the other. The cable jacket is marked "RG400/U 12814 THERMAX" and features the double-shielded, PTFE-dielectric construction characteristic of the RG400/U specification, with silver-plated conductors and a nominal outside diameter of 2.81 mm (0.11 in). Two protective dust caps — one black, one red — are included.

Specifications & What's Included

• Cable Type: RG400/U
• Manufacturer: Thermax (lot/print number 12814)
• Length: ~190 cm (~75 in)
• Outside Diameter: 2.81 mm (0.11 in)
• Impedance: 50 Ohm
• Conductor: Silver-plated
• Dielectric: PTFE (Teflon)
• Shield: Double-shielded braided construction
• Connector A: SMA Male
• Connector B: SMA Female
• Green strain-relief boots at both connector ends
• Includes: two protective dust caps (black and red)
• Frequency Range: DC to 12.4 GHz (per RG400/U spec)

Applications

RG400/U is a military-grade, double-shielded coaxial cable type widely used in RF and microwave signal routing for test and measurement setups, spectrum analyzers, signal generators, network analyzers, and similar bench equipment. Its PTFE dielectric and silver-plated conductors give it low loss and stable electrical characteristics across a wide frequency range, making it a standard choice in lab environments where signal integrity matters. The SMA connector format is one of the most common interfaces on RF test equipment and microwave components, used from roughly the 1960s onward and still the dominant connector type on benchtop RF instruments and modules today. A 190 cm length suits inter-equipment patching on a lab bench or in a rack without excessive slack.