126NQ200-1

126NQ200-1 Application Field and Working Principle

126NQ200-1 is a rectifying diode with a voltage rating of 200V and 6.5A Repetitive peak reverse current. It is widely used in appliances, small toys, and general switching circuits. The diode is of a two-terminal construction, featuring an anode terminal and a cathode terminal. The anode terminal is connected to a positive power supply (Vin) while the cathode terminal is connected to the load. When a forward voltage is applied between the anode and the cathode, it acts as a conductor and allows current from the power supply to flow through the forward valve in order to energize the load. When the voltage is removed, the diode acts as a sudden open-circuit which prevents the current from flowing in the reverse direction. In order for the diode to work properly, it must be placed in the correct directions with respect to the load.

When a forward current is present, the anode is more positive than the cathode and a potential barrier is formed. This potential barrier is known as a PN-junction barrier. This potential barrier decreases the amount of current that can flow from the cathode to the anode. The PN-junction barrier voltage can also vary depending on the applied forward voltage. This is known as the voltage drop (Vf). The voltage drop is determined by the temperature within the diode, which can vary as the current or power required for the load increases.

As the diode is alight with a forward current, barriers are created in the PN-junctions that look like a bunch of back-to-back diodes. As the forward current increases, the barrier height prevents larger currents from flowing through the device. This is known as the cut-off voltage and is usually set at a safe value that will not damage the diode when applied in a circuit. The diode is also designed such that when reverse current is present, a much higher potential barrier is created which stops any reverse current flow in the device. This is known as the reverse breakdown voltage and is usually set at a higher limit than the cut-off voltage.

The diode also maintains its forward voltage drop, even if the current or power required by the load increases. As the load increases, the temperature of the diode also increases, which causes the PN-junction voltage drop to increase, providing an automatic protection mechanism for the diode. This also helps to regulate the power delivered to the load and helps to prevent the diode from getting damaged.

In conclusion, 126NQ200-1 is a rectifying diode that is suitable for use in appliances, small toys, and general switching circuits. Its two-terminal construction allows for the current to flow in one direction, while preventing the flow of current in the opposite direction. The diode also has a built-in protection mechanism that helps regulate the power delivered to the load and safeguard the diode against damage.