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The SMA could be constructed with both Brass of Stainless Metal our bodies. Initially SMA’s have been virtually at all times stainless-steel; for navy purposes, stainless-steel is often known as out. A key distinction between the two supplies is the torque required for correct mating; an sma torque wrench for chrome steel adapters requires about 8 in-lbs torque; brass sma’s are tightened to five in-lbs; utilizing an 8 in-lb torque wrench on a brass sma will twist the pinnacle of the connector off.
Prime quality SMA Connectors are often constructed to the suitable US mil-specs, which name out Teflon dielectric materials, BeCu contacts, & 50 microinches minimal gold plating on the contacts. Brass sma’s, usually focusing on industrial purposes with much less extreme environments & decrease price markets, might substitute plastic as a substitute of Teflon; brass contacts as a substitute of BeCu; and both 30 microinches, 10 microinches, or 3 microinches of gold plating on the contacts. The perfect SMA’s can work to 27 gHz; some very cheap variations work to solely 3gHz.
For coaxial attenuators, an SMA attenuator could be both stainless-steel or brass; likewise an SMA adapter could be of both materials. Figuring out which materials is suitable, & which torque wrench to make use of, is crucial in selecting the proper half for an software. SMA cables likewise are available each supplies.
Coaxial adapters, utilizing an SMA on one or both port likewise could be both brass or materials. Use a stainless if not sure of what you want; use a brass half if it suits with the remainder of the system, & you already know brass is suitable to your software. All the time examine for the suitable torque setiing; not like N’s and TNC’s, SMA require correct torque.
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