RG188 Coaxial Cable M17/138 50 Ohm 3GHz MIL-DTL-17 RF Cables for Automotive Industry
RG188 is a MIL-DTL-17 compliant 50 Ohm coaxial cable (M17/138-RG188) engineered for high-temperature applications requiring reliable RF performance in a compact form. Featuring a stranded 7/0.17mm silver plated copper-clad steel conductor and single silver-plated copper braid shield, this cable delivers consistent signal transmission up to 3 GHz. The PTFE insulation and PFA jacket enable continuous operation from -55°C to +230°C, making it ideal for aerospace, defense, and automotive industry where extreme temperatures and space constraints are critical factors.
- 230°C continuous rating – Handles heat that melts standard coax, perfect for engine bays and industrial ovens
- Stranded SCCS conductor – Flexes without fatigue, outlasting solid conductors in vibrating equipment
- MIL-DTL-17 qualified – Built to mil-spec for mission-critical reliability
- PFA jacket – Non-stick, chemical-resistant, and tougher than standard FEP
- Compact 2.5mm diameter – Routes easily through tight spaces and cable bundles
- Low attenuation – Clean signal delivery from 100 MHz to 3 GHz
| Item | Material | Diameters (mm) |
|---|---|---|
| Inner Conductor | SCCS | 7/0.17 |
| Insulation | PTFE | 1.52 |
| Outer Conductor | 1:SC | 1.98 |
| Jacket | PFA | 2.49 |
| Capacitance (pF/m) | 96.5 |
|---|---|
| Impedance (Ohms) | 50 |
| Velocity of Propagation (%) | 69.5 |
| Max Voltage (Vrms) | 1200 |
| Max Frequency (MHz) | 3000 |
| Bend Radius (mm) | 13 |
| Temperature Range (℃) | -55~+230 |
| Frequency (MHz) | Attenuation (dB/m) |
|---|---|
| 100 | 0.262 |
| 400 | 0.531 |
| 1000 | 0.856 |
| 3000 | 1.532 |
- Aircraft engine compartments and thrust reversers
- Defense vehicle communication systems
- Industrial ovens and high-heat processing equipment
- Downhole drilling and oil exploration tools
- Satellite and space vehicle wiring
- Laboratory test leads exposed to heat
- Automotive sensors and high-temperature harnesses
- Medical equipment requiring sterilization cycles
A: RG188 offers higher temperature rating (230°C vs 200°C) with PFA jacketed.
A: The PFA jacket withstands continuous 230°C exposure while standard FEP jackets soften at 200°C.
A: Yes, the 7-strand SCCS conductor bends easily without work hardening.
A: Standard SMA, BNC, TNC, MCX, and MMCX connectors for 2.5mm diameter coax.
A: Yes, the stranded conductor resists fatigue failure better than solid conductors.
A: Yes, any length with no minimum. Assemblies with connectors also available.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.