TC-400-NF-X N Female Crimp/Solder Connector for LMR-400 coaxial cable
TC-400-NF-X Connector is a heavy-duty N-Type Female (jack) connector specifically designed for the reliable termination of LMR-400 and similar 400-series flexible low-loss coaxial cable. As part of the traditional TC Series, this connector features a solder pin connection, which is often preferred for applications using stranded center conductors or where maximum mechanical and electrical integrity is required. It provides a durable, weatherproof, and high-performance female connection point for systems operating up to 6 GHz.
Key Features & Advantages
- LMR-400 Optimized: Precision-engineered for the larger diameter and superior low-loss characteristics of LMR-400 coaxial cable, ensuring optimal signal integrity and power handling.
- Solder Pin Connection: The traditional solder inner contact is ideal for installations where maximum durability and a low-resistance electrical connection are critical, especially with stranded center conductors.
- High-Frequency N-Type: The robust, medium-sized threaded coupling mechanism is renowned for its durability and excellent electrical characteristics, supporting frequencies up to 6 GHz.
- Weatherproof Design: The N-Type interface provides a reliable, threaded, weatherproof coupling when mated, making it suitable for both indoor and outdoor rated systems.
- Rugged Materials: Constructed from brass with nickel body finish and a gold-plated center pin for exceptional corrosion resistance and a long lifespan.
Detailed Technical Specifications
| Attribute | Detail |
| Connector Style | N-Type |
| Gender | Female (Jack) |
| Interface | Straight, Threaded Coupling |
| Impedance | 50 Ohms |
| Max Frequency | 6 GHz |
| VSWR ($\le 1.30:1$ Freq.) | 2.5 GHz |
| Compatible Cable Group | LMR-400 (and equivalents) |
| Inner Contact Attach | Solder (Pin Supplied) |
| Outer Contact Attach | Crimp |
| Body Material/Finish | Brass / Nickel Plating |
| Center Contact Plating | Gold |
| Dielectric Material | PTFE (Polytetrafluoroethylene) |
Typical Applications
The robust construction and LMR-400 compatibility make the TC-400-NF-X essential for:
- Wireless Infrastructure: Used in cellular base stations, antennas, and repeater systems.
- High-Power Systems: Where the low loss and power handling of LMR-400 coaxial cable are required.
- Coaxial Jumper Assemblies: Creating durable, high-performance N-Female cables for device interconnection.
- Test & Measurement: Used in lab environments for robust, high-frequency test leads.
Installation & Recommended Tooling
The TC-400-NF-X requires a specific set of tools for proper solder and crimp installation:
- Cable Prep Tool: A dedicated LMR-400 strip tool (e.g., CST-400 or equivalent) is essential for accurate conductor and dielectric preparation.
- Crimping Tool: Requires the appropriate hex die size (typically .429″ HEX or Times Microwave 3190-666/CT-400 tool) for the ferrule.
- Soldering Equipment: Requires a fine-tip soldering iron and high-quality solder for reliably securing the center pin.


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