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Triaxial TRB Type RF Connectors

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TRB connectors are connectors for triaxial cables, also called triple coaxial cables. It is used as a noise suppressor for micro current measurement equipment and precision measurement equipment. It can be used for low-level signal connection and balanced line applications. Bionet-lock type for easy coupling, but cannot be coupled with BNC connectors. Impedance is mismatched.

Trivia: About Cables

JIS Standard
Japanese Industrial Standards (JIS) compliant cables. The higher the number of the part number, the thicker the cable. "D: 50Ω" and "C: 75Ω" represent the impedance.
MIL Standard
Compliant with US military standards for cables. Begins with the initials "RG" and is also called Mil-Spec.
Micro Coaxial Cables
Micro coaxial cables for attaching to miniature RF connectors such as U.FL.
Semi-flexible
Shape memory coaxial cables can be bent to a certain degree but have high shielding and low loss (attenuation).
Semi-rigid
A coaxial cable that uses a seamless metal tube to achieve higher shielding and less attenuation than semi-flexible cables.

Triaxial cables, also called triple coaxial cables, have one more layer than normal coaxial cables.

In ordinary coaxial cables, an insulator between the inner and outer conductors prevents electromagnetic noise from leaking out.
However, when measuring minute currents, the small amount of current that leaks even with insulators separating the conductors can cause large errors in the measured values.

This is where triaxial cables come in. Triaxial cables have an additional layer of intermediate conductor and inner coating between the insulation and outer conductor.
This avoids measurement errors when measuring minute currents.


トライアキシャル・ケーブル


Triaxial TRB connectors use a bionet locking method (also called bayonet, bayonet, etc.) for easy coupling, and the mating part is similar to that of BNC.



However, they cannot be mated with BNC connectors.
Not only is the internal construction different for triaxial cables, but the number of studs (protrusions) for coupling is also different.
BNC connectors mate with two studs, whereas triaxial TRB connectors mate with three studs in a bionet-locked manner.





Triaxial cables, also known as triple coaxial cables, are supported, making them suitable for noise suppression in microcurrent measurements.

BNC connectors are available in two types of impedance 50Ω75Ω. Triaxial TRB connectors are impedance-mismatched products.
Therefore, they cannot be used in higher frequency bands.

The same as BNC, it is a bionet locking system. Three studs (protrusions) provide more secure coupling.

Micro current measuring instruments, precision measuring instruments, etc.

*The figures are typical values. Please contact us for details.

Compatible Standards MIL-PRF-49142
Impedance Mismatch
Conneciton Bayonet Coupling 3-lug
Voltage Rating AC 400V
Maximum Voltage
Between Center Contact And Intermediate Conductor:AC 1200V one minute
Between Intermediate Conductor And Outer Conductor:AC 500V one minute
Insulation Resistance 1,000MΩ min. at DC 500V
Contact Resistance Between Center Contacts:2.0mΩ max.
Between Intermediate Conductor:0.5mΩ max.
Between Outer Conductor:0.4mΩ max.

Talk to our Connector Experts

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We can quickly provide you with the ideal coaxial connectors for your requirements. We welcome small lot orders. To get started, please send us details of your needs, and one of our experts will get back to you shortly.

Tel. +81-3-3939-9161

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