RG187A/U RF Cable 75 Ohm MIL-C-17 Taped PTFE Jacket White Coax for Defense and Aerospace

RG187A/U M17/136-00001 is a MIL-DTL-17 compliant 75 Ohm coaxial cable distinguished by its white taped PTFE jacket construction. Unlike extruded jackets that can limit flexibility and thermal performance, this cable features a wrapped PTFE tape outer layer that enables continuous operation from -55°C to +250°C while maintaining excellent flexibility for routing in tight spaces. The inner conductor consists of 0.30mm silver-plated copper-clad soft steel (SCCS), providing reliable signal transmission with the strength needed for fixed installations. The extruded PTFE dielectric at 1.60mm ensures consistent 75 Ohm impedance with 64 pF/m capacitance and 69.5% velocity of propagation. The silver-plated copper wire braid (2.01mm) delivers effective EMI shielding, while the taped PTFE jacket (2.79mm) provides exceptional thermal protection and moisture resistance. With 1200V RMS maximum operating voltage and 400 MHz rated frequency, RG187A/U is the preferred choice for aerospace avionics, defense systems, and high-temperature industrial applications where standard coaxial cables cannot withstand the thermal demands.

• White taped PTFE jacket – Wrapped construction (not extruded) provides superior flexibility and 250°C continuous temperature rating, outperforming FEP jacketed alternatives by 50°C
• 1200V operating voltage – Higher voltage rating than standard 75 Ohm miniature coax, suitable for demanding defense and aerospace applications
• Silver-plated copper-clad soft steel conductor – 0.30mm SCCS combines excellent conductivity with mechanical strength for reliable fixed installations
• Extruded PTFE dielectric – Precision extruded PTFE ensures consistent 75 Ohm impedance and low signal loss
• Silver-plated copper wire braid – 2.01mm outer conductor provides effective EMI/RFI protection with excellent conductivity
• 64 pF/m capacitance – Optimized for high-frequency signal transmission with 69.5% velocity of propagation
• 400 MHz operating frequency – Suitable for video, data, and RF applications within the specified range
• MIL-DTL-17 qualified – M17/136-00001 for mission-critical defense and aerospace applications requiring full traceability
• 2.79mm overall diameter – Compact form factor fits through tight cable channels in crowded avionics bays
• 12.7mm minimum bend radius – Flexible enough for complex routing paths while maintaining electrical performance
• 16.2 g/m lightweight construction – Ideal for weight-sensitive aerospace and airborne applications

• Aircraft avionics systems – Taped PTFE jacket withstands 250°C heat soak in engine-adjacent installations while 12.7mm bend radius routes through crowded equipment bays
• Defense communication equipment – MIL-DTL-17 compliant for tactical radios and data links requiring 1200V voltage rating
• Satellite payload wiring – PTFE construction provides low outgassing for vacuum operation with 16.2 g/m lightweight design
• Radar display systems – 75 Ohm impedance for video signal transmission in ground-based and airborne radar
• High-temperature industrial sensors – Continuous monitoring in oven and furnace applications up to 250°C
• Medical equipment sterilization – Withstands autoclave cycles for reusable medical devices requiring high-temperature resistance
• Test and measurement – Fixed installation in environmental chambers for component characterization at extreme temperatures
• Defence vehicle electronics – Rugged construction survives vibration and thermal cycling in armored vehicle installations
• Broadcast infrastructure – 75 Ohm video signal distribution in production facilities requiring high reliability
• Petroleum exploration – Downhole logging tools requiring both high temperature and high voltage capability

Q: What is the M17 part number for RG187A/U?

A: M17/136-00001 is the official MIL-DTL-17 part number, as shown in the specification sheet.

Q: What is the temperature rating?

A: Continuous operation from -55°C to +250°C, enabled by the taped PTFE jacket construction.

Q: What is the voltage rating?

A: 1200V RMS maximum operating voltage, higher than the 900V or 750V ratings commonly cited for this cable type.

Q: What type of jacket does RG187A/U use?

A: White taped PTFE, which is wrapped rather than extruded. This construction provides superior flexibility and higher temperature rating compared to extruded FEP jackets.

Q: What is the impedance and capacitance?

A: 75 Ohm impedance with 64 pF/m capacitance.

Q: What type of conductor does RG187A/U use?

A: 0.30mm silver-plated copper-clad soft steel (SCCS) – the "soft steel" designation indicates optimized ductility for this application.

Q: What is the outer diameter?

A: 2.79mm including the taped PTFE jacket.

Q: What is the minimum bend radius?

A: 12.7mm for static installation.

Q: What is the weight?

A: 16.2 grams per meter, making it suitable for weight-sensitive aerospace applications.

Q: What is the difference between taped PTFE and extruded FEP jackets?

A: Taped PTFE construction (as on this RG187A/U) offers 250°C temperature rating and superior flexibility, while extruded FEP jackets are typically limited to 200°C.

Q: What connectors work with RG187A/U?

A: BNC, TNC, MCX, and other 75 Ohm connectors designed for 2.8mm diameter cables.

Q: Do you offer custom lengths?

A: Yes, RG187A/U M17/136-00001 is available in bulk spools, cut pieces, or fully assembled with connectors.