Product Overview
The SMA-K5 is commonly used as an SMA female straight connector for coaxial cable applications. The front side provides an SMA female interface, while the rear section is designed for connection to a suitable RF coaxial cable.
It is a small connector, but the cable fit makes a real difference. In our experience, the position of the center contact, dielectric and outer conductor needs to be controlled carefully if the finished SMA-K5 Connector is expected to perform consistently.
Connector Structure
The SMA-K5 consists mainly of an SMA female interface, center contact, dielectric insulator, outer conductor and cable termination section.
Its straight-body design keeps the SMA Coaxial Connector compact and convenient for many cable assemblies. Depending on the version, the cable side may use crimping, soldering or another specified termination method.
The rear structure can vary according to the cable being used, so we normally confirm the cable model and dimensions before production.
Electrical Performance
The SMA-K5 is generally used in 50 Ohm RF systems. Different SMA-K5 versions can have different frequency specifications. Some available versions are specified up to DC–6 GHz, so the actual frequency range should be confirmed according to the connector design.
For an SMA RF Connector, small changes in the internal dimensions can affect high-frequency performance. Center contact positioning and the relationship between the inner and outer conductors are particularly important when looking at VSWR and insertion loss.
If your application has a defined frequency range or VSWR requirement, we can check the connector according to the actual project.
Cable Compatibility
SMA-K5 connectors are commonly associated with 50 Ohm coaxial cables such as RG58, RG142 and RG223, although the exact cable compatibility varies between different versions.
For this reason, ordering a SMA Female Cable Connector only by the name "SMA-K5" may not always be enough. The cable model, outer diameter and conductor construction should also be checked.
If you are using RG58, RG142 or another coaxial cable, send us the cable model or dimensions. We can check the suitable SMA-K5 configuration.
Materials & Construction
Depending on the version, the SMA-K5 body can be made from brass or another suitable metal. The center contact may use beryllium copper or a similar contact material, with gold plating available for the contact area.
PTFE is commonly used for the dielectric section of SMA connectors.
These materials affect more than appearance. They have a direct relationship with mechanical strength, contact stability and long-term connector performance. During production of the SMA-K5 Connector, we pay particular attention to the center contact, dielectric and cable termination area.
Basic Specifications
| Item | Specification |
|---|---|
| Product | SMA-K5 |
| Connector Type | SMA Female |
| Body Style | Straight |
| Impedance | 50 Ohm |
| Application | RF Coaxial Cable |
| Cable Type | RG58 / RG142 / RG223* |
| Contact Material | Brass / CuBe* |
| Insulator | PTFE* |
| Plating | Gold / Nickel* |
| Cable Attachment | Crimp / Solder* |
| Frequency | Model dependent |
| RoHS | Available |
*Specifications may vary according to the actual SMA-K5 configuration. Please confirm the final product drawing and specification with Tongda Electronics.
Applications
The SMA-K5 Connector can be used in a variety of RF applications, including:
RF Test Equipment
Wireless Communication Equipment
Antenna Systems
RF Modules
Measurement Instruments
Coaxial Cable Assemblies
Laboratory Equipment
It is a practical option when a 50 Ohm coaxial cable needs to be terminated with an SMA female interface.
From Our Side
When a customer asks us for an SMA-K5, we normally check more than the part number. We want to know which cable is being used, the cable diameter and the required frequency range.
That may sound like a small thing, but it can prevent a lot of trouble later. Different SMA-K5 versions can look almost the same while being designed for different cables.
Contact Us
If you are looking for an SMA-K5 Connector, SMA Female Connector or SMA Coaxial Connector, send us your cable model, drawing, product photo or required quantity.
Not sure about the exact part number? That is fine. Send us what you have, and we will check the connector with you.
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