March 12, 2026
SDI Coaxial Cable Specification
This product is a dedicated coaxial cable for SDI (Serial Digital Interface), mainly used for the transmission of high-speed serial digital signals such as high-definition video signals, digital TV signals, and monitoring signals. It features low transmission loss, strong anti-interference ability, and stable mechanical performance, suitable for broadcast-level, monitoring-level, industrial-level and other scenarios that require high signal transmission quality. The product adopts shaft-mounted packaging, which is convenient for storage, transportation and on-site construction deployment.
HCW-SDI-0.9CS-4.8-FOAM (from inside to outside)
| Structural Layer | Material Specification | Parameter Details | Function Description |
| Conductor (Core Wire) | Copper-Clad Steel Core | Diameter 0.9mm, uniform copper cladding, high-carbon steel core to ensure the balance between conductor strength and conductivity | The core carrier for transmitting electrical signals. The copper-clad steel structure balances conductivity and mechanical tensile strength to avoid signal attenuation during transmission. |
| Insulation Layer | New Physical Foaming | Thickness 4.8mm, adopting new physical foaming technology with uniform foaming, stable density and low dielectric constant | Isolate the conductor from the outer conductor, reduce signal interference, lower transmission loss, and ensure the stability and integrity of signal transmission. |
| Inner Shielding Layer | Self-Adhesive Aluminum Foil | Aluminum foil thickness ≥0.02mm, self-adhesive design, closely attached to the insulation layer without wrinkles or damage | Primary shielding, effectively blocking external electromagnetic interference (EMI) and radio frequency interference (RFI), and preventing signal leakage. |
| Outer Shielding Layer | Aluminum-Magnesium Alloy Wire Braiding | 80 strands × 0.12mm aluminum-magnesium alloy wire, braiding density ≥90%, uniform wire diameter, tight braiding without broken wires or skipped wires | Secondary shielding, further enhancing anti-interference ability, suitable for long-distance transmission of high-definition SDI signals (such as 1080P, 4K). |
| Outer Sheath | Black PVC Outer Skin | Made of environmentally friendly PVC, thickness ≥0.6mm, smooth surface without scratches or bubbles, standard black color | Protect the internal structure, with wear resistance, aging resistance, acid and alkali resistance, corrosion resistance, suitable for various indoor and outdoor environments. |
| Packaging | Shaft-Mounted Packaging | Adopt hard plastic shaft or paper shaft, the shaft diameter is adapted according to the cable length (conventional 100m/shaft, 200m/shaft), tight packaging without looseness | Convenient for cable storage and transportation, avoiding cable entanglement and damage, and easy to cut on demand during construction. |
| Performance Item | Technical Index | Test Conditions |
| Characteristic Impedance | 75Ω±2Ω | 20℃, 1MHz-1GHz |
| Conductor DC Resistance | ≤12Ω/100m | 20℃ |
