1PMT4621CE3/TR13

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Diodes - Zener - Single

A single zener diode, also known as a PN junction diode or a voltage regulator diode, is a two-terminal semiconductor device designed to allow current to flow in only one direction while providing electrical isolation between the two terminals. In this way, the diode serves as a voltage regulator, allowing a certain amount of voltage to be applied to its terminals without allowing any other voltage to pass through. This is especially useful in situations where input or output voltages may fluctuate. Furthermore, the diode can be used to control the current flow in any given circuit.

The 1PMT4621CE3/TR13 is a single Zener diode, manufactured by Microsemi Corporation. It has a maximum power Dissipation of 4.6 W, a Peak Repetitive Reverse Voltage (Vrm) of 6.2 V, a Breakdown Voltage of 5.7V and a Peak Non-Repetitive Reverse Voltage (VRRM) of 10V. It offers an ultra-low leakage/test current of 1µA at a junction temperature of -20℃ to + 125℃ and a total power dissipation of 4.6W at a temperature of 25℃. Moreover, the diode has a fast response time of 25nsec, allowing it to respond quickly to changes in temperature and voltage, making it suitable for use in high frequency applications.

The 1PMT4621CE3/TR13 is ideal for use in applications such as over and under voltage protection, switch-mode power supplies, line-driven switching converters, and reverse power-cycle protection systems. It is also used in applications that require surge protection as it offers a high surge current tolerance of up to 100A. With its small size and low profile, it can be used in tight spaces where larger components may have difficulty fitting.

The working principle behind the 1PMT4621CE3/TR13 is best explained using the theory of P-N junction diodes. This explains how a single zener diode acts as a voltage regulator by preventing current from flowing in a certain direction while allowing current in the opposite direction. In the majority of applications, this is done so that the out-put voltage will remain constant, even when the input voltage changes. This is achieved by creating a ‘barrier’ or ‘cliff’ known as the ‘built-in electric field’, which will not allow any excess voltages to pass.

In order for the regulation to take place, the reverse bias voltage must reach the breakdown voltage. Once this voltage is exceeded, the electric field within the diode collapses, allowing current to freely flow in both directions.

Overall, the 1PMT4621CE3/TR13 is a high-performance voltage regulator diode, suitable for a wide range of applications requiring surge protection or over/under voltage protection. With its ultra low leakage/test current and fast response time, it is well-suited for high-frequency applications.

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