RG-405 Cable

Description

RG-405 is a specialized semi-rigid coaxial cable designed for 50 Ohm systems where phase stability and maximum shielding are non-negotiable. Unlike flexible braided cables, RG-405 utilizes a seamless solid copper tube as its outer conductor. This construction provides 100% RF shielding, effectively eliminating signal leakage and protecting sensitive circuits from external electromagnetic interference (EMI). The cable features a silver-plated copper-clad steel (SPCCS) center conductor and a high-stability PTFE (Teflon) dielectric.

Because the outer jacket is solid copper, the cable can be precision-bent into a permanent shape and will retain that form, making it ideal for tight, organized routing within high-frequency chassis. It is often used in applications where “formable” cables (like RG-405 hand-formable) or standard flexible cables cannot meet the rigorous phase and loss requirements. It is designed to perform exceptionally well into the millimeter-wave spectrum (up to 20GHz and beyond) and is typically terminated with SMA or specialized microwave connectors.

Key Technical Advantages

• 100% Shielding Effectiveness: The seamless solid copper outer jacket provides a total RF barrier, ensuring zero signal egress or ingress.

• Exceptional Phase Stability: The rigid construction minimizes signal phase shift caused by vibration or temperature fluctuations, critical for phased-array antennas.

• Superior Microwave Performance: Optimized for low-loss transmission at high frequencies, remaining stable well into the 20GHz+ range.

• Compact Semi-Rigid Profile: With an outer diameter of approximately 2.18mm (.086″), it allows for high-density integration in compact microwave sub-assemblies.

• Permanent Form Retention: Once bent to the required specification, the cable maintains its shape, ensuring consistent electrical paths in calibrated systems.

Key Features

• Cable Type: RG-405 / .086″ Semi-Rigid.

• Impedance: 50 Ohm.

• Center Conductor: 24 AWG (Solid Silver-Plated Copper-Clad Steel).

• Outer Conductor: Seamless Bare Copper Tube (100% Shielding).

• Dielectric: PTFE (Teflon).

• Common Applications: Internal microwave module links, satellite communication payloads, precision test and measurement fixtures, and high-speed digital backplanes.

Technical Summary