DIY stepped attenuator using C7D0423N rotary switch.


I am planning to design a stepped attenuator based on the C7D0423N rotary switch available from Electro Switch. It is a 4 deck switch having 23 positions. I am not sure on the method to identify the terminals and the method to connect the resistors. Can someone suggest me a method I should follow.

I am attaching the C7D0423N manual along with the resistor tables for reference.

Thanks in advance,


  • Resistor Table.PNG
    Resistor Table.PNG
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  • C7D0423N.pdf
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