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I'm struggling to understand the pin order on a ribbon cable.

I want to connect two boards (one main board with the MCU, the other one for the front panel to pots and buttons) and i need a 2x20 connector to connect the boards. I found on Mouser this connector but i can't find the related cable. I don't need to use that specific connector, it is just one that i found searching on Mouser.

On top of that, i need to understand what's the pin order using this cable. Basically how can I connect the two boards without swapping pins.

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This diagram shows how the pins on a standard 2x10 ribbon cable connector are numbered and how the ribbon cable conductors are connected to the pins of the connector.

enter image description here

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So your connector 5103308-8 would mate to a connector such as 1658621-9

enter image description here

This is a 40 position connector with a .100" pitch. because it is 2 row you would need a .050" pitch cable. Here are some options Digi-Key carries. Any disti will have some options depending on the length you need. -Robert

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