Precautions for fast recovery diodes

Fast recovery diodes are now ubiquitous in our daily lives, and whether it is LEDs or other electronic circuits, they cannot do without the assistance of our fast recovery diodes. So, what should be noted when using fast recovery diodes

What about the matter?

1、 Some single diodes have three pins, with the middle one being an empty pin, which is usually cut off at the factory, but there are also some that are not cut.

2、 If one of the pipes is damaged, it can be used as a single pipe.

3、 When measuring the pressure drop of the positive guide, the R × 1 gear must be used. If using the R × 1k gear, the measured VF value will be significantly lower due to the test current being too small, far below the normal operating current of the diode. In the above example, if the R × 1k gear is selected

Measurement shows that the forward resistance is equal to 2.2k Ω, with n '=9 grids. The VF value calculated from this is only 0.27V, much lower than the normal value (0.6V).

Of course, it is necessary to ensure that the detection of fast recovery diodes is carried out under the premise of safety.