Generally, there are many kinds of rubber shells in on-line board connectors, such as 1.0, 1.25, 2.0, 2.5, 2.54, 3.0, 3.96, 4.2, 5.08, 6.35MM, etc. There are many kinds of TXGA rubber shells, which are equipped with needle seats and terminals, as well as wire harnesses.
The housing, also known as the outer cover of the connector, provides mechanical protection for the built-in insulating mounting plate and pins, and provides alignment when the plug and socket are inserted, thus fixing the connector to the equipment.
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The materials used in the production of connectors on different products are also different. For example, waterproof connectors, when producing this kind of connectors, different materials will be used.
In terms of environmental parameters, it is best to choose the corresponding metal shell according to the actual environmental conditions, because the environment will be affected by temperature, humidity, environmental corrosion, sudden temperature change and atmospheric pressure. Take the waterproof connector as an example, the environment used and kept during transportation has a great influence on its performance.
Generally speaking, there is not much difference between a metal shell and a plastic (nylon TA66) shell. Compared with the metal shell, the plastic shell has lower cost, more reasonable structure, and there is not much difference in performance in all aspects.