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Old 21st Jan 2019, 1:23 pm   #4
Join Date: Oct 2010
Location: Tintinara, South Australia, Australia
Posts: 1,008
Default Re: Data requested for BAY83 diode (1969 vintage)

75v is more than enough.

The flyback voltage across a coil with a diode connected wont be any more than the forward voltage drop of the diode itself and then only for a matter of milliseconds.

If your still worried about it, use a 1N4004 or 1N4007.
Terry VK5TM
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