1N4990US

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The 1N4990US is a part of the Diodes - Zener - Single family and is mainly used to provide a low forward voltage, high current surge in various electronic devices. The 1N4990US is a single zener diode, which means that it has a single junction and can be used to regulate a current or voltage. In particular, it is especially effective at protecting the circuit from the excessive voltage and current in the event of a transient surge, protecting sensitive components and providing a stable voltage source.

The 1N4990US has an absolute maximum rating of 5.0 volts while its maximum Zener breakdown voltage is 4.7 volts. The maximum reverse current, which is the amount of current it can handle in the reverse direction, is 4mA and the maximum surge forward current is 100mA. Additionally, the 1N4990US has a typical thermal resistance of 75 degrees Celsius per Watt.

The 1N4990US can be used in a variety of applications, for example it can be used as a voltage regulator, surge protector, and in order to limit the magnitude of a voltage or current. In particular, it is ideal for protecting sensitive electronic devices from the danger of the excessive voltage and current coming from the power source. Additionally, it is widely used in a variety of electronic and mechanical components, such as resistors, transistors, LEDs, capacitors, and amplifiers.

The working principle of the 1N4990US is fairly simple. It works by limiting the current or voltage that is sent through the diode by creating a voltage drop across it, preventing it from exceeding the defined threshold. Additionally, it is capable of regulating the voltage by allowing only a fraction of the current to pass through the diode, thus providing a stabilizing effect on the system. When the 1N4990US is subjected to a voltage or current that is above its defined threshold, it will start to conduct a current, thus protecting the electronic components connected to it.

Overall, the 1N4990US is a single zener diode that offers a variety of advantages such as providing a low forward voltage and high current surge protection, as well as providing a stable voltage and current in a circuit. It is widely used in a variety of electronic and mechanical components, such as resistors, transistors, LEDs, capacitors, and amplifiers. Additionally, its working principle is quite straightforward, as it limits the current or voltage by creating a voltage drop across the diode and preventing it from exceeding the desired threshold. Therefore, the 1N4990US is an essential part of any electronics system that requires protection from voltage and current surges.

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