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RF Product · Coaxial Cables & Connectors

RG303 50 Ohm Coaxial Cable (DC–3GHz) GLRG303

SKUGLRG303

GLRG303 is a 50 Ω RG303 flexible coax with a 4.3 mm FEP jacket and PTFE dielectric for RF cable assemblies.

DC–3GHz (VSWR ≤ 1.25)Jacket OD 4.3±0.1mmRG303, 50 Ω flexible coax

Need a different connector, cable configuration or frequency? Send the SKU and project requirements.

Commercial informationData revision V1 · 10 September 2026 · valid through 10 September 2029
MOQ10 pieces
SamplesFree sample available
Standard lead time7 days
CustomizationConnector and frequency
ProductionMass production

Volume pricing is negotiable. Custom-order MOQ is confirmed against the project specification.

Documented product data

Technical specifications

Values below come from the fields currently recorded for this model.
SKUGLRG303
FrequencyDC–3GHz (VSWR ≤ 1.25)
DimensionsJacket OD 4.3±0.1mm
Cable TypeRG303, 50 Ω flexible coax
Impedance50±2Ω
Inner ConductorSilver plated copper / Silver plated copper coated steel, 0.93±0.02mm
DielectricPTFE, Ø2.95±0.1mm
ShieldSilver plated copper wire
JacketFEP, Ø4.3±0.1mm
Capacitance95.1±2 pF/m
Velocity of Propagation69.5%
Peak Power2.1 kW
Cutoff Frequency41 GHz
VSWR≤ 1.25 (DC–3GHz)
Operating Temperature-55 to +200°C
CategoryCoaxial Cables & Connectors

Product details

GLRG303 is a 50 Ω flexible coax for assemblies that need the routing space and termination size associated with its 4.3 ± 0.1 mm jacket. Choose connectors and preparation tooling for this cable construction, rather than selecting only by the RG family name. The PTFE dielectric and silver-plated shielding are also relevant when specifying the assembly process.

The stated DC–3 GHz VSWR performance should be kept separate from the 41 GHz cutoff entry; the latter does not establish low-loss operation to that frequency. Request attenuation data at the required frequency and length before choosing a run. The cable temperature range also needs to be considered alongside the ratings of the finished connectors and terminations, especially in equipment exposed to sustained heat.

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