1N4955US

The 1N4955US diode is a Zener diode that falls into the category of Single Diodes. This diode is designed to operate as a voltage regulator in order to limit the voltage that reaches a circuit. It does this by way of the Zener Breakdown effect, which is caused by the diode when it has been reverse biased and the depletion region near the P-N junction has grown enough to allow electrons to flow.

The most common application of the 1N4955US diode is in voltage regulation as it is much cheaper and more efficient than traditional linear regulators. For example, many power supplies require reliable voltage regulation and the 1N4955US diode can effectively provide this. This diode can also be used in motor controllers and in automotive applications to provide reliable voltage regulation.

The 1N4955US diode has a maximum power dissipation of 500 mW and a maximum working voltage of 24 volts. It also has a 30-35 volts zener voltage and a 100 mA zener voltage current. Its reverse stand-off voltage is 17 volts and its forward voltage is 1.2 volts. Its ESD-Pro rating is also quite impressive at 4 kV.

The working principle of the 1N4955US diode is quite simple. When there is no current flowing through the diode, its depletion region is quite small and so very little current is able to flow through it. However when the diode is reverse biased the depletion region will begin to enlarge and more electrons will be able to flow through it. This allows for the voltage to be limited and regulated as it is not able to go above the breakdown voltage. Once the voltage has been regulated, the current can then flow through the diode.

In summary, the 1N4955US is a Zener diode that falls into the category of Single Diodes. It has ubiquitous applications in voltage regulation and can be used in many motor controllers and in automotive applications. Its working principle is quite simple, the diode’s depletion region grows to allow more current to flow when it is reverse biased, and this limits and regulates the voltage.