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Q. which PCB or similar punched board is suitable for these 3.5 mm connectors
A. Hi Norman. Thank you for your question. All of our strip board has a 2.54mm (0.1") pitch so is not suitable for these connectors you would need to have a drilled PCB made to spec. You can use every other hole in a standard strip board to utilise a 5.08mm terminal block like 21-0442.