RG178 is a MIL-DTL-17 compliant 50 Ohm coaxial cable (M17/93-RG178) designed for high-density applications where space is limited. With a compact 1.8mm outer diameter, this miniature cable features a stranded silver-coated copper-covered steel center conductor and single silver-plated copper braid shield, delivering reliable RF performance up to 3 GHz. The PTFE dielectric and FEP jacket enable continuous operation from -55°C to +200°C, making it suitable for avionics, electronics, and antenna R&D where weight savings and thermal stability are critical.

• Ultra-compact 1.8mm diameter for tight spaces and high-density PCB layouts
• MIL-DTL-17 qualified to M17/93-RG178 specification
• Stranded silver-coated copper-covered steel conductor for flexibility and strength
• PTFE dielectric for stable electrical performance across -55°C to +200°C
• FEP jacket resistant to UV, chemicals, moisture, and abrasion
• Single silver-plated copper braid provides effective EMI shielding
• Lightweight construction – only 1.3 kg per 100m

• Internal equipment wiring for cramped enclosures and high-density PCBs
• Test leads and probes for antenna R&D use
• Aerospace avionics where weight savings are essential
• Medical devices requiring compact cabling solutions
• RF module interconnects within transceivers and amplifiers
• GPS receivers needing clean signal delivery in small spaces
• Defense electronics requiring MIL-DTL-17 qualification
• Sensor connections in space-constrained environments

Q: What is the M17 designation for RG178?
A: M17/93-RG178 is the official MIL-DTL-17 part number.

Q: How small is RG178?
A: RG178 has an outer diameter of just 1.8mm, making it one of the smallest 50 Ohm coaxial cables available.

Q: What is the conductor construction?
A: RG178 uses a stranded 7/0.10mm silver-coated copper-covered steel conductor for flexibility and strength.

Q: What is the maximum frequency?
A: RG178 is rated up to 3 GHz, suitable for most RF applications in compact spaces.

Q: What is the temperature range?
A: Continuous operation from -55°C to +200°C.

Q: What connectors work with RG178?
A: Micro-miniature connectors including MCX, MMCX, SMA, and U.FL compatible types designed for 1.8mm cables.

Q: Is RG178 flexible?
A: Yes, the stranded conductor makes it flexible and easy to route in tight spaces.

Q: What is the voltage rating?
A: 1000 V RMS.

Q: Do you offer custom lengths?
A: Yes, sold by meter or foot with no minimum order. Custom assemblies with micro-connectors are available.