Do you offer custom lengths and connector assemblies?

Yes. We provide semi-rigid cables in custom lengths and can assemble them with SMA, N-Type, BNC, TNC and other RF connectors according to your specifications.

What is the difference between semi-rigid and semi-flexible cable?

Semi-rigid cable has a seamless solid metal outer conductor that provides 100% RF shielding but requires special tools to form. Semi-flexible cable uses a tin-dipped braided outer conductor that can be hand-formed and holds its shape, offering easier installation with slightly lower shielding performance.

What is the temperature range of PTFE dielectric semi-rigid cable?

PTFE dielectric semi-rigid cables typically operate from -65°C to +200°C, making them suitable for extreme environments including aerospace, defense and industrial applications.

Can semi-rigid cable be used in high-vibration environments?

Yes. Semi-rigid cable is highly durable and maintains stable electrical performance under shock and vibration, making it ideal for aerospace, defense and mobile applications.

What is the maximum frequency for semi-rigid cable?

Depending on the diameter, semi-rigid cables can operate from 500 MHz up to 65 GHz and beyond. Smaller diameters (such as 0.034") support higher frequencies, while larger diameters (such as 0.250") are suitable for lower frequencies with lower loss.

Can semi-rigid cable be bent after initial forming?

Semi-rigid cable can be formed once or twice during installation, but repeated bending is not recommended. For applications requiring frequent reconfiguration, consider semi-flexible or flexible cable instead.

Semi-Rigid Coax Cable

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Semi-Rigid Coax Cable

Semi-rigid coaxial cable finds application in frequency ranges from 500 megahertz (500 MHz) through 65 Gigahertz (65 GHz) and beyond.
Almost any system designed for 500 megahertz and above,and in need of good operational performance and total shielding, can utilize semi-rigid cable.
It is still the best microwave transmission medium available in the world. The solid tubular outer conductor yields 100% RF shielding and enables the dielectric and center conductor to remain precisely spaced. This results in optimum impedance control as well as the lowest possible insertion loss.

Professional Semi Rigid Coax Cable Manufacturer

Hongsen Cable manufactures semi-rigid coax available in 10 Ohm, 25 Ohm, 35 Ohm, 50 Ohm, 70 Ohm and 75 Ohm impedances with PTFE and LD PTFE dielectric. The diameters available are 0.034 inch, 0.043 inch, 0.047 inch, 0.0865 inch, 0.09 inch, 0.141 inch and 0.250 inch with a seamless copper, tin-plated copper, silver plated copper, tinned aluminium or tin-plated aluminium outer conductor. Two types of inner conductors are offered, which are silver plated copper (SPC) or silver plated copper clad steel.

Key Features & Benefits of Semi-Rigid Coaxial Cable

Frequency range from 500 MHz to 65 GHz and beyond
Impedance options from 10Ω to 75Ω
Operates in temperatures from -65°C to +200°C
100% RF shielding with seamless tubular outer conductor
Lowest insertion loss and excellent phase stability
Holds shape after forming for easy installation
Diameters from 0.034" to 0.250" for various power and frequency requirements
Outer conductor materials include copper, tin-plated, silver-plated copper or aluminium

Applications Of Semi Rigid Coax Cable

Test Equipment
Space & Defense
Medical
Wireless
Low PIM

Semi-Rigid Cable Selection Guide

Step 1: Choose the Right Impedance

Impedance	Typical Applications
50Ω	General RF, microwave, test equipment, wireless communication (most common)
75Ω	Video, CATV, broadcast applications
10Ω, 25Ω, 35Ω	Special impedance matching, military and aerospace custom systems
70Ω	Legacy telecom equipment, specific industrial applications

Rule: Match the cable impedance to your system. 50Ω is the standard for most RF and microwave applications.

Step 2: Select the Appropriate Diameter

Outer Diameter	Frequency Range	Typical Use
0.034" (0.86mm)	Up to 65 GHz	Compact microwave modules, high-frequency applications
0.047" (1.19mm)	Up to 40 GHz	RF modules, aerospace equipment
0.086" (2.20mm)	Up to 26 GHz	General microwave, test equipment
0.141" (3.58mm)	Up to 18 GHz	Base stations, wireless infrastructure
0.250" (6.35mm)	Up to 12 GHz	High-power applications, low-loss long runs

Rule: Smaller diameters support higher frequencies but have higher attenuation. Larger diameters offer lower loss but are less flexible.

Step 3: Consider Outer Conductor Material

Copper: Best conductivity, standard choice for most applications
Tin-plated copper: Improved corrosion resistance, cost-effective
Silver-plated copper: Superior high-frequency performance, reduced loss
Aluminium (tinned or bare): Lightweight, suitable for weight-sensitive aerospace applications

Need help selecting? Contact our engineering team with your frequency, impedance and environmental requirements for personalized recommendations.

0.034 inch OD (0.86mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-034-SP 50 ohm	0.20mm Silver Plated Copper Clad Steel	0.66mm PTFE	0.86mm Seamless Silver-Plated Copper Tube	50 ± 3 Ohm	HSR-304-SP.pdf	View detail »	Inquire
HSR-034 10 ohm	0.51mm Silver Plated Copper	0.64mm PTFE	0.86mm Seamless Copper Tube	10 ± 3 Ohm	HSR-304-10.pdf	View detail »	Inquire
HSR-034-TP 50 ohm	0.20mm Silver Plated Copper Clad Steel	0.66mm PTFE	0.86mm Seamless Tin-Plated Copper Tube	50 ± 3 Ohm	HSR-034-TP.pdf	View detail »	Inquire
HSR-034 50 ohm	0.20mm Silver Plated Copper Clad Steel	0.66mm PTFE	0.86mm Seamless Copper Tube	50 ± 3 Ohm	HSR-304.pdf	View detail »	Inquire

0.043 inch OD (1.09mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-043 10Ohm	0.72mm Silver Plated Copper	0.91mm PTFE	1.09mm Seamless Copper Tube	10 ± 3 Ohm	HSR-043C-10.pdf	View detail »	Inquire

0.047 inch OD (1.19mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-047 50Ohm	0.29mm Silver Plated Copper Clad Steel	0.94mm PTFE	1.19mm Seamless Copper Tube	50 ± 3 Ohm	HSR-047.pdf	View detail »	Inquire
HSR-047-TP	0.29mm Silver Plated Copper Clad Steel	0.94mm PTFE	1.19mm Seamless Tin-Plated Copper Tube	50 ± 3 Ohm	HSR-047-TP.pdf	View detail »	Inquire
HSR-047-SP	0.29mm Silver Plated Copper Clad Steel	0.94mm PTFE	1.19mm Seamless Silver-Plated Copper Tube	50 ± 3 Ohm	HSR-047-SP.pdf	View detail »	Inquire

0.0865 inch OD (2.20mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-0865C-25	0.92mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Copper Tube	25 ± 2 Ohm	HSR-0865C-25.pdf	View detail »	Inquire
HSR-0865C-25-TP	0.92mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Tinned Plated Copper Tube	25 ± 2 Ohm	HSR-0865C-25-TP.pdf	View detail »	Inquire
HSR-0865	0.51mm Silver Plated Copper Clad Steel	1.68mm PTFE	2.20mm Seamless Copper Tube	50 ± 2 Ohm	HSR-0865.pdf	View detail »	Inquire
HSR-0865C	0.51mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Copper Tube	50 ± 2 Ohm	HSR-0865C.pdf	View detail »	Inquire
HSR-0865-SP	0.51mm Silver Plated Copper Clad Steel	1.68mm PTFE	2.20mm Seamless Silver Plated Copper Tube	50 ± 2 Ohm	HSR-0865-SP.pdf	View detail »	Inquire
HSR-0865-TP	0.51mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Tin-Plated Copper Tube	50 ± 2 Ohm	HSR-0865-TP.pdf	View detail »	Inquire
HSR-0865C-TP	0.51mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Tinned Plated Copper Tube	50 ± 2 Ohm	HSR-0865C-TP.pdf	View detail »	Inquire
HSR-0865C-SP	0.51mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Silver Plated Copper Tube	50 ± 2 Ohm	HSR-0865C-SP.pdf	View detail »	Inquire
HSR-0865C-AL-TP-LL	0.574mm Silver Plated Copper	1.68mm LD PTFE	2.20mm Tin-Plated Aluminum Tube	50 ± 2 Ohm	HSR-0865C-AL-TP-LL.pdf	View detail »	Inquire
HSR-0865C-LL	0.574mm Silver Plated Copper	1.68mm PTFE	2.20mm Seamless Copper Tube	50 ± 2 Ohm	HSR-0865C-LL.pdf	View detail »	Inquire
HSR-0865-AL-TP	0.51mm Silver Plated Copper	1.68mm PTFE	2.20mm Tin-Plated Aluminum Tube	50 ± 2 Ohm	HSR-0865-AL-TP.pdf	View detail »	Inquire
HSR-0865-75-TP	0.287mm Silver Plated Copper Clad Steel	1.70mm PTFE	2.20mm Seamless Tinned Plated Copper Tube	75 ± 2 Ohm	HSR-0865-75-TP.pdf	View detail »	Inquire

0.090 inch OD (2.29mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-090-25	1.02mm Silver Plated Copper	1.85mm PTFE	2.29mm Seamless Copper Tube	25 ± 2 Ohm	HSR-090C-25.pdf	View detail »	Inquire

0.141 inch OD (3.58mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-141C-25	1.63mm Silver Plated Copper	2.97mm PTFE	3.58mm Seamless Copper Tube	25 ± 2 Ohm	HSR-141C-25.pdf	View detail »	Inquire
HSR-141C-35	1.29mm Silver Plated Copper	2.97mm PTFE	3.58mm Seamless Copper Tube	35 ± 2 Ohm	HSR-141C-35.pdf	View detail »	Inquire
HSR-141 50 Ohm	0.91mm Silver Plated Copper Clad Steel	2.98mm PTFE	3.58mm Seamless Copper Tube	50 ± 2 Ohm	HSR-141.pdf	View detail »	Inquire
HSR-141-TP	0.91mm Silver Plated Copper Clad Steel	2.98mm PTFE	3.58mm Seamless Tin-Plated Copper Tube	50 ± 2 Ohm	HSR-141-TP.pdf	View detail »	Inquire
HSR-141C-TP	0.91mm Silver Plated Copper	2.98mm PTFE	3.58mm Seamless Tin-Plated Copper Tube	50 ± 2 Ohm	HSR-141C-TP.pdf	View detail »	Inquire
HSR-141C 50 Ohm	0.91mm Silver Plated Copper	2.98mm PTFE	3.58mm Seamless Copper Tube	50 ± 2 Ohm	HSR-141C.pdf	View detail »	Inquire
HSR-141-SP	0.91mm Silver Plated Copper Clad Steel	2.98mm PTFE	3.58mm Seamless Silver-Plated Copper Tube	50 ± 2 Ohm	HSR-141-SP.pdf	View detail »	Inquire
HSR-141C-SP	0.91mm Silver Plated Copper	2.98mm PTFE	3.58mm Seamless Silver-Plated Copper Tube	50 ± 2 Ohm	HSR-141C-SP.pdf	View detail »	Inquire
HSR-141C-LL	1.02mm Silver Plated Copper	2.99mm PTFE	3.58mm Seamless Copper Tube	50 ± 2 Ohm	HSR-141C-LL.pdf	View detail »	Inquire
HSR-141-AL-TP	0.91mm Silver Plated Copper Clad Steel	2.98mm PTFE	3.58mm Tin-Plated Aluminum Tube	50 ± 2 Ohm	HSR-141-AL-TP.pdf	View detail »	Inquire
HSR-141C-AL-TP-LL	1.02mm Silver Plated Copper	2.98mm PTFE	3.58mm Tin-Plated Aluminum Tube	50 ± 2 Ohm	HSR-141C-AL-TP-LL.pdf	View detail »	Inquire
HSR-141-75	0.511mm Silver Plated Copper Clad Steel	2.98mm PTFE	3.58mm Seamless Copper Tube	75 ± 2 Ohm	HSR-141-75.pdf	View detail »	Inquire
HSR-141C-75	0.511mm Silver Plated Copper	2.98mm PTFE	3.58mm Seamless Copper Tube	75 ± 2 Ohm	HSR-141C-75.pdf	View detail »	Inquire

0.250 inch OD (6.35mm)

Model	Inner Conductor	Dielectric	Outer Conductor	Impedance	PDF	Details	Inquiry
HSR-250C	1.63mm Silver Plated Copper	5.30mm PTFE	6.35mm Seamless Copper Tube	50 ± 2 Ohm	HSR-250C.pdf	View detail »	Inquire
HSR-250C-SP	1.63mm Silver Plated Copper	5.30mm PTFE	6.35mm Seamless Silver Plated Copper Tube	50 ± 2 Ohm	HSR-250C-SP.pdf	View detail »	Inquire
HSR-250C-TP	1.63mm Silver Plated Copper	5.30mm PTFE	6.35mm Seamless Tin-Plated Copper Tube	50 ± 2 Ohm	HSR-250C-TP.pdf	View detail »	Inquire
HSR-250C-AL-TP	1.63mm Silver Plated Copper	5.30mm PTFE	6.35mm Seamless Tin-Plated Aluminum Tube	50 ± 2 Ohm	HSR-250C-AL-TP.pdf	View detail »	Inquire
HSR-250-75	0.912mm Silver Plated Copper Clad Steel	5.44mm PTFE	6.35mm Seamless Copper Tube	75 ± 2 Ohm	HSR-250-75.pdf	View detail »	Inquire
HSR-250-75-TP	0.912mm Silver Plated Copper Clad Steel	5.44mm PTFE	6.35mm Seamless Tin-Plated Copper Tube	75 ± 2 Ohm	HSR-250-75-TP.pdf	View detail »	Inquire

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FAQ About Semi-Rigid Coaxial Cable

Q Do you offer custom lengths and connector assemblies?

A Yes. We provide semi-rigid cables in custom lengths and can assemble them with SMA, N-Type, BNC, TNC and other RF connectors according to your specifications.
Q What is the difference between semi-rigid and semi-flexible cable?

A Semi-rigid cable has a seamless solid metal outer conductor that provides 100% RF shielding but requires special tools to form. Semi-flexible cable uses a tin-dipped braided outer conductor that can be hand-formed and holds its shape, offering easier installation with slightly lower shielding performance.
Q What is the temperature range of PTFE dielectric semi-rigid cable?

A PTFE dielectric semi-rigid cables typically operate from -65°C to +200°C, making them suitable for extreme environments including aerospace, defense and industrial applications.
Q Can semi-rigid cable be used in high-vibration environments?

A Yes. Semi-rigid cable is highly durable and maintains stable electrical performance under shock and vibration, making it ideal for aerospace, defense and mobile applications.
Q What is the maximum frequency for semi-rigid cable?

A Depending on the diameter, semi-rigid cables can operate from 500 MHz up to 65 GHz and beyond. Smaller diameters (such as 0.034") support higher frequencies, while larger diameters (such as 0.250") are suitable for lower frequencies with lower loss.
Q Can semi-rigid cable be bent after initial forming?

A Semi-rigid cable can be formed once or twice during installation, but repeated bending is not recommended. For applications requiring frequent reconfiguration, consider semi-flexible or flexible cable instead.

Semi-Rigid Coax Cable

Professional Semi Rigid Coax Cable Manufacturer

Key Features & Benefits of Semi-Rigid Coaxial Cable

Applications Of Semi Rigid Coax Cable

Semi-Rigid Cable Selection Guide

0.034 inch OD (0.86mm)

0.043 inch OD (1.09mm)

0.047 inch OD (1.19mm)

0.0865 inch OD (2.20mm)

0.090 inch OD (2.29mm)

0.141 inch OD (3.58mm)

0.250 inch OD (6.35mm)

FAQ About Semi-Rigid Coaxial Cable

Q Do you offer custom lengths and connector assemblies?

Q What is the difference between semi-rigid and semi-flexible cable?

Q What is the temperature range of PTFE dielectric semi-rigid cable?

Q Can semi-rigid cable be used in high-vibration environments?

Q What is the maximum frequency for semi-rigid cable?

Q Can semi-rigid cable be bent after initial forming?

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