Re: Cooler recifier diodes?
1N5401 is 100v 3A well within what Schottkys do
Look at the circuit design. If they rectify and feed a capacitive load, then they will charge it with narrow spikes of high peak current and things like 1N5401 are spec'd at 1.2v drop which is a lot more than standard silicon Vbe.
Schottkys also exhibit increased drop at high current, but their starting point advantage still leaves them better at high currents. With the right parts, you could still halve the dissipated wattage.
David
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