2.92mm K Type RF Connector Catalog
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What is a 2.92mm K Type RF Connector
The 2.92mm type rf connector, also called the K type rf connector, is one of the high-performance miniature connectors for high frequencies up to 40 GHz. They are compatible with SMA type and 3.5mm type rf connectors, with an impedance of 50 Ω series and a threaded coupling method for secure coupling.
Some 2.92mm K type RF connectors are available for purchase from Digi-Key.
Product List
Adapters
Right Angle Adapters
Flange adapters
Terminators
SMA
Between-series Adapters
SMP
Between-series Adapters
2.4mm
Between-series Adapters
2.4mm Right Angle Between-series Adapters
3.5mm
Between-series Adapters
Cable with 2.92mmType RF Connector
High-performance cable with 2.92mm plugs or jacks on both ends and capable of up to 40 GHz. The total length is 300 mm to 1,000 mm. 1 piece can be made to order, and delivery time is 2 to 5 weeks depending on the production lot. 
Custom-order Semi-flexible Cables
Semi-flexible cable that supports frequencies from 18 to 40 GHz.It is a shape memory type and can be bent to some extent, but it is a coaxial cable with high shielding properties and low loss (attenuation).
Cables can be selected according to 3 types of thickness and presence/absence of coating.It can be attached to small connectors for high frequencies such as SMA, N, 2.92mm (K), and SMP.Compatible connectors differ for each cable, so please check the diagram below and contact us.
*Connectors with "◎" are also available in low-cost versions with lower specifications. Please contact us with your preferred specifications and budget.
Custom-order Semi-rigid Cables
Semi-rigid cables for frequency bands from 18 to 50 GHz.This coaxial cable uses a seamless metal tube to ensure higher shielding and less attenuation than semi-flexible cables.
Cables can be ordered in 5 different diameters, and bending can also be customized.The cable can be attached to SMA, N, 2.92mm(K), 2.4mm, 1.8mm(V), and other small connectors for high-frequency applications.Compatible connectors differ for each cable, so please check the diagram below and contact us.
*Connectors with "◎" are also available in low-cost versions with lower specifications. Please contact us with your preferred specifications and budget.
High Frequency Test Cables
We have an extensive lineup of high-frequency measurement cables with 2.92 mm K connectors attached, which can be combined with SMA connectors and other connectors. Please refer to the product page for specifications.
TC-048 40GHz compatible, High Frequency
TC-205 is a high-end cable for measurement at 40 GHz with low loss and high phase stability, triple-shielded and stable against bending and temperature, making it ideal for network analysis and other measurement applications.
Connectors can be selected from 2.92 mm (plug and jack), SMA (plug and jack), and 3.5 mm (plug and jack).
Non-magnetic 2.92 mm (plug) is also available.
Please check the below pages for detailed cable specifications, electrical characteristics, etc.,
TC-120 50GHz compatible, Low loss
TC-120 is a high-end 50 GHz compatible, low-loss, high-phase stability, precision grade cable with triple-shielded, bend-resistant, and temperature-stable characteristics, ideal for network analysis and other measurement applications.
Connectors can be selected from 2.4 mm (plug, jack), 2.92 mm (plug, jack), and SMA (plug, jack).
Non-magnetic 1.85 mm (plug and jack) is also available, but only up to 50 GHz. In addition to the standard type, an armored type with stainless steel tube reinforcement can be selected.
Please check the below pages for detailed cable specifications, electrical characteristics, etc.,
TC-054 60GHz compatible, High Flexibility
This is a 0.085-inch (RG405) equivalent cable that is highly flexible and maintains stable characteristics up to the millimeter wave band. It can be used in a wide range of applications due to its wide variety of compatible connectors and relatively low cost.
Connectors can be selected from 1.85 mm (plug), 2.92 mm (plug, jack), SMA (plug, L plug, jack), N (plug), and others on request.
The 1.85 mm cable core is pinned, allowing it to be utilized up to 60 GHz with very low reflection.
Please check the below pages for detailed cable specifications, electrical characteristics, etc.,
2.92mm K Type RF Connector Features
High Frequency
We have a lineup of products that can be used in the high-frequency band from DC to 40 GHz. The air dielectric and the 2.92mm outer diameter allows for higher frequencies than SMA connectors.
Compatibility
The 2.92mm K connectors are mutually compatible with SMA and 3.5mm and can be mated.
Compact Size
The small size of the connector allows for high-density mounting in a small space, not only for wiring within devices but also for connection between subassemblies and between devices that make up a device.
2.92mm K Type RF Connector Applications
Satellite mount, military equipment, aviation equipment, network analyzers, etc.
2.92mm K Type RF Connector Standards & Dimensions
Note: The figures provided are typical values. For further details, please contact us.
| Compatible Standards | IEC 61169-35, MIL-STD-348A |
| Characteristic Impedance | 50 Ω |
| Coupling Method (Connection) | Threaded Coupling 1/4-36UNS-2A, 2B |
| Voltage Rating | AC 250 V |
| Maximum Voltage |
|
| Insulation Resistance | 5,000 mΩ min. at 500 V DC |
| Contact Resistance | Center 3.0 mΩ max.; Outer 2 mΩ max. |
| Frequency Range | DC to 40 GHz |
2.92mm K Type RF Connector FAQ
Q
What is the difference between SMA and K connectors?
A
A. The inner conductor diameter of the 2.92mm K connector is 1.27mm, the same as the SMA connector and 3.5mm connector. It uses an air dielectric, the outer diameter is 2.92mm. This allows for an even higher waveguide mode cutoff frequency, achieving an operating frequency of DC to 40GHz.
Learn More:
Q
Why is there a conversion connector for SMA connectors when it is compatible with SMA connectors?
A
SMA, 3.5mm, and 2.92mm are compatible and can be mated. Therefore between series adapters are useful at research facilities, universities, and other sites where severe measurements are required.
Q
Are there connectors with higher frequency and smaller sizes?
A
SMA connectors are designed for 18 GHz, 3.5mm connectors for 26.5GHz, and 2.92mm K connectors for 40GHz, respectively. We are developing SMP connectors that support up to 40GHz and are smaller in size. Please contact us if you have any questions about the development status or the shape you require.
Talk to our Connector Experts
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.
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