Belden
Belden 9842 24 AWG 2-Pair Shielded RS-485 Cable( Per Meter)
Belden 9842 24 AWG 2-Pair Shielded RS-485 Cable( Per Meter)
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Belden 9842 Low-Capacitance 2-Pair Shielded RS-485 Cable(Per Meter)
The Belden 9842 (SKU: BE9842-1000-060 / 9842 0601000) is the industry-standard 2-pair 24 AWG low-capacitance shielded data cable engineered specifically for extended-distance EIA RS-485, DMX-512, and high-noise industrial serial communication networks.
Constructed with stranded tinned copper conductors (7 * 32) and High-Density Polyethylene (PE) insulation, the cable delivers a low mutual capacitance of 12.8 pF/ft (42 pF/m) and a matched 120 Ω characteristic impedance. To ensure signal integrity in electrically noisy environments, the Belden 9842 features dual overall shielding: a 100% coverage Beldfoil® aluminum/mylar foil tape wrap combined with a 90% tinned copper wire braid shield and a 24 AWG tinned copper drain wire. Enclosed in a rugged, oil- and flame-retardant Chrome PVC outer jacket, it provides ultra-reliable signal transmission across marine, industrial, and building automation systems.
Key Features
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Matched 120 Ω Impedance for RS-485 & DMX-512: Designed to meet the stringent electrical requirements of EIA RS-485 serial buses and DMX lighting control protocols.
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Ultra-Low Capacitance: High-Density PE dielectric minimizes pulse distortion and attenuation over long cable runs.
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Combination Double Shielding: Beldfoil® 100% aluminum foil layer protects against high-frequency RFI, while the 90% tinned copper braid provides high structural strength and low-frequency EMI protection.
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Tinned Copper Drain Wire: 24 AWG stranded drain wire simplifies grounding at shield terminations.
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Marine & Industrial Grade Sheath: Chrome-colored PVC outer jacket resists sunlight, moisture, oil, and continuous panel vibration.
Specifications
| Feature | Specification |
| Manufacturer / Brand | Belden Inc. |
| Part Code / Series | 9842 (BE9842-1000-060 / 9842 0601000) |
| Cable Architecture | 2-Pair (4 Conductors) Shielded Twisted Pair (STP) |
| Conductor Gauge | 24 AWG (0.22 mm²) |
| Conductor Stranding | 7 * 32 (7 Strands of 32 AWG Tinned Copper) |
| Conductor Material | High-Purity Tinned Copper (TC) |
| Insulation Material | Polyethylene (PE) |
| Insulation Color Code | Pair 1: White/Blue & Blue/White | Pair 2: White/Orange & Orange/White |
| Shielding Type | Overall Beldfoil® Tape (100%) + Tinned Copper Braid (90%) |
| Drain Wire Specification | 24 AWG (7 * 32) Stranded Tinned Copper |
| Outer Jacket Material | Polyvinyl Chloride (PVC) — Chrome Gray |
| Nominal Outer Diameter | 8.64 mm (0.340 in) |
| Nominal Characteristic Impedance | 120 Ω |
| Nominal Capacitance (Cond-to-Cond) | 12.8 pF/ft (42.0 pF/m) |
| Nominal Capacitance (Cond-to-Shield) | 23.0 pF/ft (75.5 pF/m) |
| Nominal Velocity of Propagation (VP) | 66% |
| Nominal Conductor DC Resistance | 24.0 Ω / 1000 ft (78.7 Ω / km) |
| Voltage & Current Rating | 300V RMS (UL CM/AWM) | 2.1 A per conductor @ 25°C |
| Operating Temperature Range | -30°C to +80°C (-22°F to +176°F) |
| Compliance & Approvals | UL Style 2919, NEC/CEC CM, DMX-512, EU RoHS, CE |
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