"Threaded Neill-Concelman". Designed as a screw-on version of BNC connector, TNC connectors have a 7/16 - 28 UNEF threaded coupling providing excellent vibration handling. Widely used due to electrical performance and mechanical durability. TNC series has a characteristic impedance of 50 Ω, however it is important to note that 75 Ω variations while uncommon do exist and are identifiable by the reduced amount of dielectric inside the interface.
While performance up to 11 GHz is possible with precision designs, typically commercial manufacturers will set a maximum operating frequency of 3 to 6 GHz.
Interface Standards
The interfacing standards for the TNC connector are defined by its design, which is similar to the BNC connector but with a threaded coupling mechanism. This design allows for a secure connection, even under severe vibrations and environmental conditions. The TNC connector comes in two variations: standard polarity (also known as regular or normal) and reverse polarity. The standard polarity connector has a male pin on the plug, while the reverse polarity connector has a female pin. This distinction is critical for ensuring compatibility between devices. The TNC connector is also available in two impedance options: 50 ohms and 75 ohms. The 50-ohm connectors are most commonly used in commercial wireless LAN antennas and devices, while the 75-ohm connectors are typically used in cable television and other RF applications. The TNC connector's robustness, reliability, and performance make it an ideal choice for applications such as cellular and mobile communications, industrial and medical equipment, and aerospace and military communications.
Interfacing detail can be found under the following international standards.
- MIL-PRF-39012
- IEC 60169-17
- CECC 22200
- DIN EN 122200
Male Dimensions (courtesy of Telegärtner)
| Legend | Min | Max |
|---|---|---|
|
A
|
1.3200
|
1.3700
|
|
B
|
4.8300
|
|
|
C
|
0.1500
|
|
|
D
|
2.0600
|
2.2100
|
|
E
|
0.0800
|
1.0200
|
|
F
|
1.9800
|
|
|
G
|
1.9600
|
3.0500
|
|
H
|
5.3300
|
|
|
I
|
5.2800
|
5.7900
|
Female Dimensions
| Legend | Min | Max |
|---|---|---|
|
A
|
4.7200
|
|
|
B
|
8.1000
|
8.1500
|
|
C
|
8.3100
|
8.4600
|
|
D
|
1.8800
|
2.2900
|
|
E
|
0.1500
|
|
|
F
|
4.5500
|
5.2300
|
|
G
|
5.2800
|
|
|
H
|
8.3100
|
8.5100
|
|
I
|
10.5200
|