UF4007 VS FR107

Witam, uszkodzona dioda UF4007, czy zamiast tej diody, mogę dać FR107?
Datasheet wygląda identycznie, chyba że się mylę

Arni писал(а):Datasheet wygląda identycznie, chyba że się mylę

Hello!
Not quite, actually.

- "Max peak forward voltage" is different.
UF4007= max 1,7V while FR107= max 1,3V (In this case the diode FR107 is better, because it has a lower voltage drop in forward direction -> lower power dissipation on the diode.)

- "Max reverse recovery time" is different.
UF4007= max 75ns while FR107= max 500ns (In this case there is a huge difference between the speed of both diodes. Diode FR107 is more than 6 times slower than UF4007.)

- "Junction capacitance" is also different.
UF4007= 17pF while FR107= 50pF (Lower capacitance is better, because it affects to the diode speed - the above mentioned "Reverse recovery time".)

* Electrical characteristics may vary slightly depending on the manufacturer.

If this diode is used in the switching power supply, I suggest you to find the replacement diode with a lower "Recovery time".
A suitable replacement would be a diode BYV26E for example.
Note that the diode BYV26E usually appear in different "ceramic" housing (picture below), but it is also available in the same "plastic" housing as the original one. It's name is BYV26EGP.
The diode BYV26E should be a suitable replacement regardless of the housing type.

Thanks for advaice but I decideted to buy UF4007