Can a MDA3500 (35ah 50V) be substituted by a CM3501 (35ah 100v) bridge rectifier?

Thread Starter


Joined Jul 19, 2017
The 1970s Motorola MDA3500 used in a pinball coil circuit measures open so I want to replace it but can I use a higher voltage version without issues? Or is there another substitution available?


Joined Aug 7, 2020
Yes. If the voltage rating is greater than the peak voltage in the circuit, and the current rating is greater than the current in the circuit it will be fine.
I do note that it is VERY unusual for a bridge rectifier to fail open-circuit. They inevitable fail short.