TC-400-TM-X TNC Male Straight Solder Connector for LMR-400 Coaxial Cable
TC-400-TM-X Connector is a precision-engineered TNC Male (plug) connector specifically designed for the reliable termination of LMR-400 and other 400-series flexible low-loss coaxial cable. Featuring the traditional solder-pin center contact, this connector provides a durable, low-resistance connection essential for high-power or demanding RF environments. Its threaded TNC coupling ensures secure mating and excellent electrical performance up to 6 GHz.
Key Features & Advantages
- LMR-400 Optimized: Precision matched to the dimensions and electrical characteristics of LMR-400 coaxial cable, ensuring maximum performance and minimum reflection (VSWR < 1.30:1 up to 6 GHz).
- Solder-Pin Center Contact: Provides a strong, permanent, low-resistance electrical connection to the center conductor, making it an excellent choice for stranded center conductors where solderless designs may be less suitable.
- TNC Threaded Interface: Features the robust, miniature threaded coupling mechanism, offering high mechanical stability and superior performance compared to the BNC series, especially in high-vibration or outdoor environments.
- High Frequency Performance: Supports reliable signal transmission up to 6 GHz, meeting the demands of modern wireless and telecommunications applications.
- Durable Tri-Metal Plating: Constructed from brass with an Alballoy (White Bronze) body finish and Gold-plated center pin for excellent corrosion resistance and longevity.
TC-400-TM-X Detailed Technical Specifications
| Attribute | Detail |
| Connector Style | TNC |
| Gender | Male (Plug) |
| Interface | Straight, Threaded Coupling |
| Impedance | 50 Ohms |
| Max Frequency | 6 GHz |
| Compatible Cable Group | LMR-400 (FBT-400, TCOM-400, T-RAD-400) |
| Inner Contact Attachment | Solder |
| Outer Contact Attachment | Crimp |
| Body Material/Finish | Brass / Alballoy (White Bronze) |
| Center Contact Plating | Gold |
| VSWR (DC-6 GHz) | < 1.30:1 |
| Mating Cycles | 500 |
Typical Applications
The robust construction and high-frequency performance of the TC-400-TM-X make it a trusted connector for:
- Wireless Infrastructure: Base station feeders, antenna connections, and tower installations.
- Telecommunications: Jumper assemblies for high-performance transmission lines.
- Test and Measurement: Durable, low-loss cables for laboratory and field testing.
- Industrial RF Systems: Applications requiring secure, vibration-resistant connections.
Installation & Recommended Tooling
The TC-400-TM-X utilizes a solder/crimp termination method, requiring the following specialized tools for optimal results:
- Crimping Tool: Requires the appropriate hex die size (typically .429″ HEX for the ferrule—Always confirm with the latest datasheet).
- Cable Prep Tool: The dedicated CST-400 strip tool is essential for achieving the precise strip dimensions required for proper center pin soldering and jacket removal.
- Soldering Iron: Required for securely attaching the center pin to the cable’s inner conductor.


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