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SR-325C is a 0.325 inch semi-rigid coaxial cable designed for high power RF and microwave applications. The cable features a silver plated copper center conductor (non-magnetic), PTFE dielectric insulation, and a copper tube outer conductor for stable performance and excellent shielding. The copper outer shield provides corrosion resistance, strong electromagnetic shielding, and reliable grounding, while the rigid construction ensures consistent 50 ohm impedance and minimal signal leakage. SR-325C is RoHS compliant, making it suitable for environmentally conscious projects and industrial standards. This cable is ideal for high power RF systems, microwave instrumentation, radar electronics, and precision laboratory setups. It can also be formed into fixed shapes for internal routing in microwave modules and test equipment. SR-325C can serve as a UT-325C compatible alternative in many semi rigid cable assemblies, providing a non-magnetic solution for sensitive measurement systems.
Key Features
Non-Magnetic Silver Plated Copper Conductor - Prevents magnetic interference in sensitive RF and microwave measurement environments.
High Power Handling - 0.325 inch diameter allows for higher current and power capacity compared with smaller semi rigid cables.
Tinned Copper Tube Outer Shield - Provides excellent shielding against electromagnetic interference, corrosion resistance, and easy soldering for assembly.
Stable 50 Ohm Impedance - Maintains controlled 50 ohm characteristic impedance for standard applications.
RoHS Compliant - Meets environmental and safety standards for electronics manufacturing.
Rigid Construction for Precision Routing - Holds its shape for internal RF module routing, test fixtures, and microwave assemblies.
Specifications
Construction
Item
Material
Diameter (in)
Diameter (mm)
Centre Conductor
Silver Plated Copper
7*0.0312
7*0.7925
Dielectric
Solid PTFE
0.285
7.239
Outer Conductor
Copper Tube
0.325 +/- 0.002
8.255 +/- 0.051
Electrical Data
Capacitance (pF/m)
95.2
Impedance (Ohms)
50 +/- 0.5
Velocity of Propagation (%)
70.0
Max. Frequency (GHz)
14
Max. Voltage @60Hz (V RMS)
22800
Mechanical Data
Min. Bend Radius (mm)
19.050
Weight (kg/100m)
23.92
Environmental Data
Temperature Range (℃)
-55~+90
RoHS
Compliant
Attenuation and Power
Frequency (GHz)
Attenuation (dB/m)
Power (Watts cW@20℃)
0.50
0.11
1702.4
1.00
0.17
1156.5
5.00
0.45
443.6
10.00
0.72
283.5
18.00
----
----
26.5
----
----
40.00
----
----
50.00
----
----
65.00
----
----
90.00
----
----
Applications
High Power RF Systems - Suitable for radar, satellite, and other high power microwave communication equipment.
Microwave Instrumentation - Used in laboratory measurement systems, network analyzer setups, and test fixtures.
Antenna Test and Measurement - Commonly used for antenna evaluation, RF test fixtures, and microwave interconnect assemblies.
Aerospace and Defense Electronics - Applicable in avionics, radar electronics, and other systems requiring high reliability and non-magnetic performance.
Custom Semi Rigid Cable Assemblies - Used to produce high power RF jumper cables, precision microwave interconnects, and specialized semi rigid assemblies.
FAQ
Q: What is SR-325C coaxial cable?
A: SR-325C is a 0.325 inch semi-rigid coaxial cable with a silver plated copper center conductor (non-magnetic), PTFE dielectric, and copper tube outer shield. It is designed for high power RF and microwave applications and is RoHS compliant.
Q: Is SR-325C compatible with UT-325C cable?
A: Yes. SR-325C can be used as a UT-325C compatible alternative in most semi-rigid cable assemblies, providing similar performance with a non-magnetic conductor.
Q: Why choose a non-magnetic coax cable?
A: Non-magnetic cables prevent magnetic interference in sensitive RF and microwave measurement environments, improving measurement accuracy and system stability.
Q: What is the power handling capability of SR-325C?
A: The 0.325 inch diameter and copper tube construction allow high power operation, max withstanding power is up to 1156.5 Watts cW@20℃ at 1GHz, suitable for radar, communication, and laboratory systems.
Q: Is SR-325C RoHS compliant?
A: Yes. All materials meet RoHS standards, making it suitable for environmentally conscious designs and industrial compliance.
Q: Can SR-325C be used to build RF cable assemblies?
A: Yes. SR-325C is commonly used to manufacture custom microwave jumper cables, high power RF test assemblies, and precision semi-rigid interconnects.
Q: Can connectors be installed on SR-325C?
A: Yes. Precision RF connectors can be terminated on SR-325C to create custom high power semi-rigid cable assemblies.
Q: Are custom lengths or custom impedance available?
A: Yes. SR-325C can be cut to length, and custom impedance versions can be produced to meet specialized system requirements
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Trading Company
Year Established:
2005
Total Annual:
12100000- 18600000
Employee Number:
11~50
Ecer Certification：
Verified Supplier
About Us—Shanghai Baiyin Cable Co., Ltd.
Since 2005, Shanghai Baiyin Cable Co., Ltd. has specialized in designing and manufacturing high-performance cables for demanding environments. Headquartered in Shanghai, we serve global industries with tailored solutions engineered for reliability, prec... About Us—Shanghai Baiyin Cable Co., Ltd.
Since 2005, Shanghai Baiyin Cable Co., Ltd. has specialized in designing and manufacturing high-performance cables for demanding environments. Headquartered in Shanghai, we serve global industries with tailored solutions engineered for reliability, prec...
