trc-50-1-triaxial-cable---50-ohm-guarded-coax, trc-50-1-triaxial-cable---50-ohm-guarded-coax, /triaxial-coaxial-cable
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TRC-50-1 Triaxial Cable - 50 ohm Guarded Coax

Certification: Manufactured under Worldpeak's strict quality control standards.
Tech & Material: 50-ohm dual-shielded, flexible stranded tinned copper with PE/PVC insulation.
Effect & Scenario: Eliminates leakage for femtoamp accuracy; ideal for engineers in semiconductor and lab testing.

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  • Overview

Overview

Executive Product Summary

The TRC-50-1 triaxial cable from Zhenjiang Worldpeak Communication Co., Ltd. is a premium 50 ohm dual-shield guarded coaxial cable engineered specifically for femtoamp-level signal integrity. Featuring a dual-braid tinned copper shield system separated by a specialized polyethylene dielectric, the TRC-50-1 triaxial cable redirects stray leakage currents away from the primary signal path. Encased in a durable 4.80 mm PVC jacket, this low noise measurement cable delivers high isolation resistance and low parasitic capacitance. The TRC-50-1 guarded cable provides the essential low-noise stability required for semiconductor parametric testing, electrometer interconnects, and sensitive scientific research instruments worldwide.

Detailed Product Description & Engineering Overview

In high-precision electrical testing, standard coaxial cables often fail due to dielectric leakage current and triboelectric noise. The TRC-50-1 triaxial cable solves these critical measurement barriers through a sophisticated multi-layer guarded coaxial cable architecture.

Unlike conventional single-shield coaxial cables, the TRC-50-1 triaxial cable integrates two isolated concentric shields. The primary inner shield functions as an active guard driven at the exact electrical potential of the center signal conductor. By eliminating the potential difference across the primary inner dielectric layer, leakage current drop to near-zero levels. The outer shield acts as an independent ground screen, isolating the inner signal channels from external electromagnetic interference (EMI) and radio frequency interference (RFI).

Zhenjiang Worldpeak Communication Co., Ltd. manufactures the TRC-50-1 guarded cable using stringent dimensional tolerance controls to ensure a uniform 50 ohm characteristic impedance across the entire cable length. This structural perfection prevents signal reflection, reduces phase distortion, and preserves signal fidelity during ultra-low current measurements.

Key Product Features

  • Precision Dual-Shielding Architecture: Incorporates both an inner tinned copper braid guard shield and a robust outer ground shield for complete electrical isolation.

  • Ultra-Low Dielectric Leakage: Driven guard capability reduces effective inner dielectric leakage to sub-femtoamp levels during sensitive parametric evaluations.

  • Stable 50 Ohm Characteristic Impedance: Optimized 7 x 0.16 mm tinned copper inner conductor ensures precise impedance matching across test setups.

  • High-Grade Dielectric Insulation: Features high-purity polyethylene (PE) insulation layers that deliver high isolation resistance and stable capacitance parameters.

  • Superior EMI/RFI Immunity: Dual-braid shielding blocks external electrostatic and electromagnetic noise sources in dense laboratory environments.

  • Flexible Environmental Protection: The 4.80 mm outer PVC jacket offers exceptional mechanical flexibility, wear resistance, and long-term durability.


Advanced Technical Advantages

Active Guarding Mechanics

The primary technical advantage of the TRC-50-1 triaxial cable lies in its active guarding capability. When using standard coaxial cables, microscopic voltage differentials across the dielectric generate parasitic leakage currents that distort sub-nanoamp readings. The TRC-50-1 guarded cable design allows instrument guard amplifiers to drive the inner shield to match the center conductor voltage. 

Triboelectric Noise Suppression

Mechanical motion, vibration, or bending in standard cabling creates frictional static charges between the dielectric and metallic shield—a phenomenon known as triboelectric noise. Zhenjiang Worldpeak Communication Co., Ltd. designs the TRC-50-1 low noise measurement cable with tight layer interfaces to suppress triboelectric charge generation, making this triaxial interconnect cable ideal for dynamic automated probe stations.


Technical Specifications

Parameter Specification Value Technical Notes
Product Model TRC-50-1 Triaxial Cable Guarded Low-Noise Series
Impedance 50 Ohm Nominal Characteristic Value
Inner Conductor 7 x 0.16 mm Tinned Copper Flexible Stranded Core
Inner Dielectric 1.52 mm Polyethylene (PE) Core Signal Isolation Layer
Inner Shield (Guard) 2.00 mm Tinned Copper Braid Active Driven Guard Layer
Outer Dielectric 3.00 mm Polyethylene (PE) Guard-to-Ground Isolation
Outer Shield (Ground) 3.60 mm Tinned Copper Braid EMI / RFI Noise Shield
Outer Jacket 4.80 mm PVC Mechanical Protective Sheath
Velocity of Propagation 66% Nominal Signal Velocity
Capacitance 101 pF/m Core-to-Guard Capacitance
Attenuation @ 100 MHz 48 dB / 100m Reference Value
Attenuation @ 400 MHz 102 dB / 100m Reference Value
Operating Temperature -25°C to +75°C Continuous Working Range
Minimum Bend Radius 25 mm Installation Limit
Cable Weight 0.030 kg/m Nominal Net Weight
Connector Compatibility 3-Lug TRB, BNC Triax Industry Standard Formats


Primary Applications

  • High-Impedance Electrometer Connections: Delivers stable signal routing for electrometers and high-resistance meters measuring high-value resistors or insulative materials.

  • Capacitance-Voltage (C-V) Characterization: Serves as a stable triaxial interconnect cable for high-frequency C-V meters measuring semiconductor junction capacitance without stray cable parasitic errors.

  • Research & University Laboratories: Reliable TRC-50-1 guarded cable solution for quantum physics research, nanotechnology experiments, and advanced materials testing.


B2B Commercial Value & OEM Partner Benefits

Partnering with Zhenjiang Worldpeak Communication Co., Ltd. for TRC-50-1 triaxial cable procurement offers strategic advantages for test equipment manufacturers, system integrators, and commercial distributors:

  • Consistent Quality Control: Zhenjiang Worldpeak Communication Co., Ltd. enforces strict batch testing protocols, verifying shield-to-shield isolation resistance on every production lot.

  • Custom OEM Configurations: Zhenjiang Worldpeak Communication Co., Ltd. provides complete OEM cable assembly options, including factory-terminated 3-Lug TRB or BNC Triax assemblies customized to exact customer lengths.

  • Optimized Supply Chain & Cost: Bulk production capability ensures competitive pricing for volume orders, maximizing profit margins for equipment integrators without compromising performance.


Frequently Asked Questions (FAQ)

Q1: How does the TRC-50-1 triaxial cable differ from standard twinax cable?

A: Twinax cable contains two parallel inner conductors inside a single shield and is designed for differential signal transmission. The TRC-50-1 triaxial cable features a single center conductor surrounded by two concentric, isolated braid shields designed specifically for single-ended guarded measurements.

Q2: What connectors should be specified for the TRC-50-1 guarded cable?

A: The TRC-50-1 triaxial cable is fully compatible with standard 3-Lug TRB connectors and triaxial BNC connectors, ensuring seamless integration with Keithley, Keysight, and other industry-standard instrumentation.

Q3: Can Zhenjiang Worldpeak Communication Co., Ltd. provide custom outer jackets or anti-static packaging?

A: Yes, Zhenjiang Worldpeak Communication Co., Ltd. offers tailored OEM packaging options, custom sequential jacket marking, and specialized anti-static handling for high-precision laboratory distribution.

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