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trc-75-1-triaxial-cable---75-ohm-guarded-coax, trc-75-1-triaxial-cable---75-ohm-guarded-coax, /triaxial-coaxial-cable
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Certification: Manufactured under Worldpeak's strict quality control standards.
Tech & Material: 75-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.
Zhenjiang Worldpeak Communication Co., Ltd. presents the TRC-75-1 triaxial cable, a high-precision 75 ohmguarded coaxial cable engineered specifically for low-current measurement systems, semiconductor testing, and high-isolation instrumentation. Featuring a dual-shield design composed of an inner driven braid and an outer ground braid separated by a specialized polyethylene dielectric layer, the TRC-75-1 triaxial cable minimizes leakage current across the primary insulation. Encased in a compact 5.20 mm PVC jacket, this low noise measurement cable provides exceptional signal integrity, precise impedance control, and reliable noise suppression, making it essential for femtoamp-level testing applications.
In modern precision test environments, standard coaxial interconnects frequently introduce dielectric leakage currents that compromise ultra-low current measurements. The TRC-75-1 triaxial cable manufactured by Zhenjiang Worldpeak Communication Co., Ltd. addresses this limitation through an advanced triaxial architecture designed for active guarding setups.
By utilizing a driven inner shield maintained at the exact electrical potential of the center conductor, the voltage drop across the primary insulation layer drops to virtually zero. This mechanism eliminates parasitic leakage paths that typically plague high-impedance testing. Built with a flexible 7 x 0.16 mm stranded tinned copper center conductor and a durable 5.20 mm PVC outer jacket, the TRC-75-1 triaxial cable balances mechanical flexibility with electromagnetic protection.
The TRC-75-1 guarded cable allows test engineers to route critical signals reliably between electrometers, Source-Measure Units (SMUs), probe stations, and high-impedance voltmeters. Whether deployed in semiconductor parametric characterization or sensitive laboratory research, this triaxial interconnect cable delivers high isolation and signal stability under demanding conditions.
Precision 75 Ohm Impedance: Engineered for exact 75 ohm matching in high-impedance measurement circuits and specialized test equipment.
Dual-Shield Guarded Architecture: Incorporates an inner tinned copper braid guard shield and an independent outer tinned copper braid ground shield.
Flexible Stranded Conductor: Constructed with a 7 x 0.16 mm tinned copper core for enhanced bendability and durability during repeated handling.
Femtoamp-Level Leakage Control: Suppresses dielectric current leakage paths when connected to active instrument guarding outputs.
Compact 5.20 mm Outer Diameter: Offers a tighter minimum bend radius of 26 mm compared to larger triaxial cabling, ideal for space-constrained test fixtures.
Universal Interface Support: Fully compatible with industry-standard 3-Lug TRB and BNC Triax termination hardware.
Understanding the technical distinctions between standard coaxial lines and the TRC-75-1 triaxial cable is critical for optimizing sensitive test configurations.
In standard coaxial cabling, a voltage differential exists between the center signal conductor and the grounded outer braid. This voltage difference causes microscopic current leakage through the dielectric material, creating errors when measuring signals below 1 nA.
The TRC-75-1 triaxial cable resolves this issue. When connected to a guarded measurement system, an internal unity-gain buffer drives the inner shield to match the voltage on the center conductor. Because the potential difference across the inner polyethylene dielectric is virtually zero, no dielectric leakage current can flow. The outer shield remains connected to system ground, acting as a screen against environmental electro-magnetic interference (EMI).
While twinaxial cables utilize two center conductors inside a single shield for differential signaling, the TRC-75-1 triaxial cable uses a single center conductor surrounded by two concentric shields. Twinax is designed for differential data transmission, whereas the TRC-75-1 guarded cable is optimized for single-ended, guarded low-current measurement paths.
| Parameter | Specification Value | Engineering Notes |
| Impedance | 75 ohm | Characteristic system impedance |
| Inner Conductor | 7 x 0.16 mm Tinned Copper (TC) | Flexible stranded core conductor |
| Inner Dielectric | 1.80 mm Polyethylene (PE) | Primary conductor insulation layer |
| Inner Shield (Guard) | 2.30 mm Tinned Copper Braid | Active driven guard shield |
| Outer Dielectric | 3.60 mm Polyethylene (PE) | Inter-shield isolation dielectric |
| Outer Shield (Ground) | 4.20 mm Tinned Copper Braid | External EMI ground shield |
| Outer Jacket | 5.20 mm Polyvinyl Chloride (PVC) | Protective outer jacket |
| Velocity of Propagation | 66% | Nominal signal propagation speed |
| Nominal Capacitance | 67 pF/m | Core-to-guard capacitance |
| Attenuation @ 100 MHz | 42 dB/100m | High-frequency signal attenuation |
| Attenuation @ 400 MHz | 90 dB/100m | Upper-frequency signal attenuation |
| Operating Temperature | -25°C to +75°C | Standard operational temperature |
| Min. Bend Radius | 26 mm | Structural radius limit |
| Cable Weight | 0.032 kg/m | Lightweight physical density |
Semiconductor Parametric Testing: Links Source-Measure Units (SMUs) to wafer probe stations to enable precise femtoamp leakage, threshold voltage, and gate capacitance measurements.
High-Impedance Electrometer Connections: Connects electrometers and high-resistance meters to sensitive device nodes without loading down signal paths.
Capacitance-Voltage (C-V) Characterization: Serves as a low noise interconnect cable for measuring semiconductor junction capacitance where stray parameters must be controlled.
Materials Science Research: Connects precision physical sensors, radiation detectors, and cryogenic probes requiring high isolation from external noise sources.
Choosing Zhenjiang Worldpeak Communication Co., Ltd. as your supplier for TRC-75-1 triaxial cable products provides measurable operational advantages:
Reduced Test Error Rates: Consistent dual-shield construction lowers false rejections during semiconductor production testing.
Custom OEM Manufacturing: Zhenjiang Worldpeak Communication Co., Ltd. provides complete B2B support, including custom cable assembly lengths, anti-static packaging, and custom jacket labeling.
Cost-Effective Scalability: Enterprise-grade performance delivered at competitive factory-direct pricing for development labs and high-volume manufacturing lines.
Correct Guard Terminal Wiring: Ensure the inner braid connects to the instrument guard terminal and the outer braid connects to chassis ground. Never short the guard shield to the ground shield.
Respect Bend Radius: Maintain the minimum bend radius of 26 mm during installation to protect the internal polyethylene dielectric layers from physical deformation.
Use Precision Triaxial Connectors: Terminate exclusively with 3-Lug TRB or BNC Triax connector systems engineered for dual-shield isolation.
Standard coax cannot support active guarding. The TRC-75-1 triaxial cable features an isolated inner guard shield that neutralizes the voltage differential across the inner dielectric, eliminating leakage current during low-current measurements.
The TRC-75-1 triaxial cable is fully compatible with 3-Lug TRB connectors and BNC Triax connectors configured for 5.20 mm cable dimensions.
Zhenjiang Worldpeak Communication Co., Ltd. performs strict quality control tests on every production lot, including shield-to-shield isolation resistance testing, impedance verification, and physical dimensional inspection.
