What size are SMA connectors?
1/4-inch
Connector design The SMA connector employs a 1/4-inch diameter, 36-thread-per-inch threaded barrel. The male is equipped with a hex nut measuring 5/16 inch (0.3125 inch / 7.9 mm) across opposite flats, thus taking the same wrench as a #6 SAE hex nut.
What is SMA connector used for?
SMA and RP-SMA are standard threaded antenna connectors for high frequency applications from 1 GHz to approx. 16 Ghz. They are most commonly used in microwave systems, such as portable radio and mobile phone antennas, but also with WiFi antenna systems.
How does an SMA connector work?
SMA Connectors are 50 Ohm RF Coaxial connectors that operate up to a 18 GHz. These connectors have screw type coupling mechanism which minimizes reflections and attenuation by ensuring uniform contact. SMA connectors are one of the most used RF connectors.
How do you identify SMA connectors?
The SMA female connector is identified by outside 1/4″-36 threads. A standard polarity connector will have a female sleeve. The RP SMA male connector is identified by inside 1/4″-36 threads and a 5/16″ hex nut. It will not have a male pin, but will have a female sleeve.
Is SMA better than BNC?
The SMA is better at resisting water intrusion than the BNC and is the most popular style connection on most 2-way radios. For a free-wide connection, such as to an external antenna, yes the BNC is a better choice but it isn;t something that an SMA to BNC adapter wouldn’t solve.
How much power can a SMA connector handle?
Connector Specifications
| Connector Type | Maximum Frequency (GHz) | Maximum CW Power @ Max, Frequency (Watts) |
|---|---|---|
| 3.5mm | 34 | 45 |
| SMA precision | 26.5 | 70 |
| BNC | 4 | 70 |
Is SMA compatible with 3.5 mm?
The SMA connector is mechanically compatible with two other connector types: 3.5- and 2.92-mm connectors. 2.92-mm connectors can be used at higher frequencies than 3.5-mm connectors, as they offer performance to 40 GHz.