1N4148 - Anything better?

MaxHeadRoom78 said:

I usually use an external high speed rect in parallel with the internal one, source to drain.
Also http://www.irf.com/technical-info/appnotes/an-936.pdf
Max.

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Tony Stewart said:

1. No, unless it is push pull.. the diode goes across the inductive load in reverse of normal direction, rated for same current and forms a smaller current loop.
2. No, unless just used at low rates as all diodes have capacitance.

Depending on speed diode must be a fast recovery type Schottky. The normal Body diode unless a zener does not protect for overvoltage because the diode is in reverse connected to Drain instead of V+ for low side switch.

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maicael said:

Ok. Thanks
But for question 1, you said no "unless its push pull..."
So how do I place the diode in push pull cos I do push pull application for people?.
And I play around sometimes
Also it has to be a zener right or will an ordinary diode do in this configuration..

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MaxHeadRoom78 said:

I use mine on a full bridge.
Max.

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Tony Stewart said:

Push-pull means complementary or half bridge driver.

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