SMA Type RF Connector Catalog
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What is a SMA Type RF Connector
SMA (Subminiature Type A) connectors are a type of high-performance miniature connector for RF/microwave applications, offering a wide range of frequencies and exceptional durability.
The body is available in stainless steel or brass, depending on the application. The impedance is 50Ω, using a threaded coupling method.
We also offer high-frequency cables when working with bands above 18 GHz. Please inquire for details.
Some SMA type RF connectors are available for purchase from Digi-Key.
Product List
SMA Straight Plugs
SMA Right Angle Plugs
SMA Straight Jacks
SMA Bulkhead Jacks
SMA Flange Jacks
SMA Adapters
SMA Flange Adapters
SMA Right Angle Adapters
SMA Receptacles
SMA PCB Receptacles
SMA Protective Caps
SMA Reverse Polarity
SMA Others
SMA Cables
High-Frequency Test Cables
Between-series Adapters
Probes (under development)
Probes (under development)
Lead-Free
In-Stock Coaxial Cables with SMA Type RF Connectors
1.5D Equivalent Coaxial Cable, SMA Plugs on Both Ends
| Product Name | Total Length |
| SAP0.5W1.5DSQEHV | 0.5m |
| SAP1W1.5DSQEHV | 1m |
| SAP1.5W1.5DSQEHV | 1.5m |
| SAP2W1.5DSQEHV | 2m |
| SAP3W1.5DSQEHV | 3m |
| SAP5W1.5DSQEHV | 5m |
Micro Coaxial Cable with SMA Bulkhead Jack on One End and U.FL Plug on the Other
| Product Name | Total Length |
| SMABJ0.1UFL-1.32 | 0.1m |
| SMABJ0.15UFL-1.32 | 0.15m |
Cables Suitable for SMA Type RF Connectors
MIL Standard
Micro Coaxial Cables
Semi-flexible
Semi-rigid
Trivia: About Cables
- 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
- Coaxial cables with higher shielding and less attenuation than semi-flexible cables using a seamless metal tube.
SMA Type RF Connector Features
Compact Size
The small size of the connector enables high-density mounting in a small space for wiring in equipment and for connections between subassemblies and devices that make up the equipment.
High Frequency
We have a line up of products that can be used in the high-frequency band from DC to 18 GHz and measurement cables that can be used up to 25 GHz.
Stability
Unlike the Quick-Connect type, the threaded coupling is recommended for a more secured connection.
SMA Type RF Connectors Applications
Mobile communication base stations, small communication devices, precision measuring instruments, wireless LAN, GPS, etc.
SMA Type RF Connector Standards & Dimensions
Note: The figures provided are typical values. For further details, please contact us.
| Compatible Standards | MIL-C-39012、IEC 60169-15、JEITA RC-5234 |
| Impedance | 50Ω |
| Conneciton | Threaded Coupling 1/4-36UNS-2A、2B |
| Voltage Rating | AC 500V |
| Maximum Voltage |
|
| Insulation Resistance | 5,000MΩ min. at DC 500V |
| Contact Resistance | 4mΩ max. at DC 0.1A |
| Frequency Range | 0 ～ 12,000MHz |
| V.S.W.R. |
|
| Materials | Stainless steel, brass |
| Surface Treatment | Passivate, nickel plating, gold plating |
| Wiring Method | Solder, Crimp, Tightening |
SMA Type RF Connector FAQ
Q
What is the difference between SMB and SMA connectors?
A
SMB (Subminiature Type B) connectors are smaller than SMA (Subminiature Type A). SMB connectors use a snap-on method for coupling, whereas SMA connectors use a threaded-on method. The snap-on type requires less effort for coupling but is less sensitive to vibration and is easier to disconnect than the threaded coupling type.
Additionally, SMBs use a lower frequency band than SMAs, so you must consider the installation location and electrical characteristics when installing an SMB.
MCX and MMCX are also miniature connectors that use the snap-on coupling mechanism.
Q
What is reverse polarity?
A
Typically, male contacts are used for plugs, and female ones are used for jacks, so the contacts mated to each other when connected.
Reverse Polarity SMA connectors have the contacts reversed from usual, with female contacts as plugs and male as jacks. This is often the case in radio communication equipment made outside of Japan.
Learn More:
• View Reverse polarity SMA Connectors
Q
Are frequencies above 18 GHz supported?
A
Some SMA connector standard products can support up to 18 GHz. For frequencies above 18 GHz, more advanced cable processing techniques and measuring instruments are required, so we cannot guarantee the connector alone. For the above frequency bands, we sell processed cable products. We can also provide products for frequencies up to 25 GHz upon request.
Learn More:
• View TC series cables measurements
Q
Is there a compatible connector that is even smaller?
A
There are categories such as 3.5 mm, 2.92 mm (K connectors). The outer diameter is smaller than that of SMA connectors while still being compatible (and coupling-compatible) with SMA connectors. These connectors are compatible with frequencies above 18 GHz.
Our lineup includes the TC series of cables for measurement, 3.5 mm connectors, and 2.92 mm (K) connectors.
Learn More:
Q
Why are SMA, 3.5 mm, and 2.92 mm K compatible but have conversion connectors?
A
SMA, 3.5 mm, and 2.92 mm are compatible and can be mated. Therefore between series adapters are useful at research facilities, universities, and other sites where severe measurements are required.
Learn More:
• View 3.5 mm SMA adapters
• View 2.92 mm K SMA adapters
Q
Using screws to join connectors is cumbersome. Is there a product that allows quick detachable connectors?
A
Quick connect adapters, which allows for quick and easy connection with all existing threaded connectors. It improves efficiency at measurement sites. Quick connect adapters are available in N and SMA.
Q
Are waterproof connectors available?
A
Waterproof SMA connectors are available. IP levels differ depending on the product.
Please find the following for more details.
1. Waterproofing of connector mating parts
2. Waterproofing of the tube at the cable attachment point
3. O-ring waterproofing at the cable attachment point
4. O-ring waterproofing at flange mounting
Talk to our Experts
Our well experienced engineers would carefully look into your requests and respond with the finest proposal. No minimum quantity is set for the orders of customization. Please do not hesitate to contact and ask us anything.
Tel. +81-3-3939-9161
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