1PMT4123/TR13

1PMT4123/TR13 Application Field and Working Principle

1PMT4123/TR13 is a single zener diode specifically designed for use in power converters and power supply. This diode consists of a p-n junction that is designed to have a very low dynamic resistance when forward biased. The dynamic resistance of the diode is greater under reverse bias and when the reverse voltage is equal or greater than the zener voltage the dynamic resistance is effectively reduced to a very low level. This makes it ideal for power applications.

The 1PMT4123/TR13 diode is available in different power ratings and voltage values. The standard power rating for this diode is up to 400V and is also available in up to 600V. It has a maximum power rating of up to 100 watts. The diode has a maximum operating temperature of 200°C.

The working principle of the 1PMT4123/TR13 diode is based on the voltage dependent characteristic of a p-n junction. When forward biased, a small current flows through the diode and changes its resistance according to the applied voltage. When a Zener voltage is applied to the diode, the voltage dependent resistance of the p-n junction becomes very low and the current will not flow very much.

When the 1PMT4123/TR13 diode is connected in series with a conventional diode, it forms a "Crowbar protection circuit". This circuit performs the function of protecting the circuit in the event of an over voltage or over current condition. The diode acts as a clamp device, limiting the voltage or current to a preset level. This ensures that the circuit does not get damaged or destroyed due to over voltage or over current.

The 1PMT4123/TR13 diode can also be used in the rectification circuit, to generate a constant voltage. In this configuration, the diode is biased into a low forward-biased state, and the duty cycle of the applied AC waveforms, is changed by varying the series resistance. This changes the voltage across the diode and the current flow. This helps to generate a constant voltage across the diode, which is then rectified to generate a DC voltage output.

The 1PMT4123/TR13 diode is also used to protect circuits from electromechanical overstressing. In this application, the diode is connected in series with a resistor such that when the voltage across the circuit exceeds the breakdown voltage of the diode, the current is diverted to ground. This helps to protect the circuit and ensures it works properly.

The 1PMT4123/TR13 diode is a highly useful device in power applications. Its low dynamic resistance and low forward voltage makes it ideal for any application where it is necessary to protect a circuit from an over voltage condition. Additionally, it can be used as a rectifier to generate a constant voltage output and as an electromechanical overstressing protection device.