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Push Buttons / Indicator Lamps

FAQ01846 of Push Buttons / Indicator Lamps FAQ

FAQ No. FAQ01846

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Question

Must a limiting resistor be connected to the LED of the lighting part?

Answer

The following models are not provided with a limiting resistor and so it is necessary to connect an external resistor.

Pushbutton Switches "A3D", "M2D", "A3A"

The following models provided with a limiting resistor do not require an external resistor.

Pushbutton Switches "A16" (M16), "A22" (M22), "A3P" (M2P), "A3K" (M2K), "A3S" (M2S)

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