Type N Connector
Understanding the Type N Connector
Developed in the 1940s by Paul Neill at Bell Labs, the Type N remains one of the most widely used RF connectors worldwide. Its robust threaded coupling and weatherproof design make it the default choice for outdoor installations and high-reliability systems.
Key Specifications
- Impedance: 50 ohms (RF) or 75 ohms (video/CATV). Not cross-compatible
- Frequency range: DC to 11 GHz (standard), DC to 18 GHz (precision)
- VSWR: 1.07:1 at 11 GHz (precision grade)
- Power handling: Up to 2 kW at low frequencies, derated with frequency
- Coupling: 5/8-24 UNEF threaded, 15 in-lb torque
Type N vs Other Connectors
- vs SMA: N is larger, handles more power, lower max frequency. N for infrastructure; SMA for PCB and lab
- vs TNC: N is larger with higher power rating. TNC fits where BNC-size is needed with threads
- vs BNC: N is threaded (vibration-proof), higher frequency, weatherproof
Key Equations
The Type N is a medium-size, threaded RF connector rated DC to 11 GHz (18 GHz precision). Named after Paul Neill of Bell Labs, it...
Key specifications:
11 GHz | 18 GHz | 50 ohm | 75 ohm
Power: P(dBm) = 10log(PmW), 0dBm = 1mW
Comparison
| Connector | Freq Max | Impedance | Power | Interface |
|---|---|---|---|---|
| SMA | 18 GHz | 50 Ω | 0.5 W | Threaded |
| N-Type | 11 GHz | 50 Ω | 5 W | Threaded |
| 2.92mm (K) | 40 GHz | 50 Ω | 0.3 W | Threaded |
| 1.85mm (V) | 67 GHz | 50 Ω | 0.2 W | Threaded |
| 1.0mm (W) | 110 GHz | 50 Ω | 0.1 W | Threaded |
Frequently Asked Questions
What is a Type N connector?
A medium-size, threaded RF connector rated DC to 11 GHz (18 GHz precision). Named after Paul Neill of Bell Labs. Available in 50 and 75 ohm versions with weatherproof design. Standard for test equipment and base stations.
Type N vs SMA vs TNC?
Larger than both, handles more power (up to 2 kW). SMA is smaller, higher frequency. TNC is BNC-size with threads. Type N is the calibration standard for VNA and spectrum analyzers.
50-ohm vs 75-ohm Type N?
Different center pin diameters prevent cross-mating. 50-ohm for RF/telecom; 75-ohm for video, CATV, and broadcast. They look similar but are NOT interchangeable.