Standard Switches
(92)It might seem that in the era of touch interfaces push buttons will gradually disappear from the market. However, the demand for mechanical switches is still very high. Oftentimes, they are not only more comfortable, but also provide a reliable way of disconnecting electrical circuits.
The offer of push button switches is immense. Their sizes and shapes are important, but when selecting a mechanical switch, you should also pay attention to other features. The number of stable positions of the switch is very important. This feature is often connected with pin configuration. The most common are SPDT (Single Pole Double Throw) and SPST (Single Pole Single Throw). The former refers to switches with three pins. Whereas in SPST, the button has only two pins.
When selecting your switches, you should also check their electrical parameters. Obviously, their load-carrying capacity, separate for alternating and direct voltage, should never be exceeded. In some situations, the maximum resistance of the connection may be a factor. The lower, the better.
If the switches are to be exposed to harsh conditions or used in a specific environment, be sure to consider the ingress protection class of the button, the material, the flammability classification, and estimated durability that may reach up to 1M cycles. Many of today’s switches feature backlight indicating the status of your device.
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