SMA radio frequency coaxial connector was invented by James Cheal of Bendix in the United States in 1958. It was used to solve the problem of TEM mode conversion between coaxial and microstrip.
What is the difference between an SMA connector and an SMB connector?
What are the detailed differences between SMA and SMT in electronic components?
What are the components of the SMA connector?
What is the difference between an SMA connector and an SMB connector?
SMA connectors and SMB connectors are very common connector types, and both are also very small RF coaxial connectors. As a result, many purchasers who are new to RF series connectors cannot distinguish them accurately.
1. SMA has a small size, simple structure, and wide operating frequency, high reliability, and other advantages, so it will soon be widely used in aerospace systems, microwave communication engineering, and military weapons. At present, SMA has become the most versatile RF connector with the largest variety and specifications in the world.
SMA uses the threaded connection, the precision level can be used up to 26.5GHz occasions. The advantages of SMA are high frequency, small size, and stable connection. SMA is widely used in the microwave field: coaxial cable to waveguide; coaxial cable to PCB microstrip, in amplifiers, attenuators, filters, mixers, SMA can also be seen in crystal oscillators and switches.
2. SMB (Sub-Miniature-B) RF coaxial connector is a push-in connector with a stopper. It was developed in response to the market’s demand for a quick plug-in and unplugging of the connector. The center positioning function of the outer conductor shrapnel And overlapping insulators make SMB easy to snap and can maintain better performance in a vibration environment.
It has the advantages of small size, convenient insertion and removal, good vibration resistance, and small space occupation. It is widely used in communication equipment, instrumentation, and navigation systems with operating frequencies of 0-4GHz. It is used in PCB boards and RF or PCB boards. Digital signal connection.
What are the detailed differences between SMA and SMT in electronic components?
1. SMT
Surface mount technology is also called surface mount or surface mount technology. It is a smusi (short-lead smusi) device, usually called a chip device, placed on the PCB (printed circuit board, on the surface of the circuit board (L) or other substrates, by reflow soldering or dip soldering, etc. Welding circuit assembly process.
SMT mountain surface assembly components, circuit substrates, assembly design, assembly materials, assembly process, assembly equipment, assembly quality inspection, assembly system control and management, and other technical components, it is a subject involving microelectronics, precision machinery, automatic control, welding, Multidisciplinary comprehensive engineering science and technology including fine chemicals, materials, and testing.
2. SMA
PCB satin-finished electronic circuit products assembled with patches (referred to as patch products) are also called surface assemblies (shape memory alloys: surface impressions or printed circuit board components).
What are the components of the SMA connector?
In the structural principle, the connector consists of a pair of contacts, an insulator, and a shell.
1. Contact pairs of RF connectors. Depending on the structure, it can be divided into tweezers, tuning fork type, and curve reed, most of them have career guidance, contact department, equipment, and terminal department.
2. The main function of the RF connection isolator is to support and fix the contact pairs to isolate them from each other. Install the connector.
3. Junction box, the main function is mechanical and environmental protection and shielding; support the installation of the insulator; connect and disconnect the head; install the fixed connector.
The communication network has developed so fast that the demand for SMA is increasing greatly, but the products on the market do not have enough products of good quality. Lenovo has been focused on connector productions. Their staff can use the best solution for any scenario. You can get any SMA connectors as you want there.
