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RG402 is a high-performance, ultra small semi-rigid coaxial cable that has become the preferred interconnect solution for space limited and high-performance applications in microwave and RF engineering, such as precision testing equipment, aerospace, and defense systems, due to its excellent shielding (>100dB), low loss, wide bandwidth (up to 18GHz+), high power capacity, and excellent phase stability. Its semi-rigid characteristics require precise one-time molding and installation, but in return, it offers unparalleled electrical performance and reliability. If higher flexibility is required, RG400 or other flexible microwave cables should be considered.
| Construction Spectification | ||
| Item | Material | Diamenter (mm) |
| Inner Conductor | Silver Played Copper Clad Steel | 0.92±0.02 |
| Dielectric | PTF | 2.95±0.05 |
| Outer Conductor | Double Silver Plated Copper Braid | Nom. 3.50 |
| Jacket | FEP(blue) | 4.15±0.10 |
| Electrical Characteristics | ||
| Frequency Range | DC-1000MHz | |
| Impedance (Ohm) | 50 | |
| Velocity of Propagation | 70% | |
| Max. Oper. Voltage (VMS) | 1200 Vrms | |
| Max. Oper. Frequency (MHz) | 3000 | |
| Temperature Rating, UL | -55 to 200℃ | |
Precautions for selection and use, confirm specifications: RG402 parameters from different manufacturers may have slight differences, be sure to refer to the specific product specifications.
Connector: High quality SMA, 2.92mm, 3.5mm, or K-type equivalent shaft connectors are required for use. Termination requires specialized tools and skilled techniques to ensure reliable connection and low VSWR.
Bending Forming: Carefully plan the wiring path before installation. Use a specialized bending tool (pipe bender) to precisely bend into the desired shape in one go. Avoid repeated bending!
Supplier: Choose a reputable RF cable and connector supplier.
Alternative models: Sometimes RG401 (similar to RG402 but may have slight differences), UT-141 (a common model of Micro Coax with performance very similar to RG402), etc. are also seen, all of which belong to the category of slim semi-rigid cables.
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