1PMT4133/TR7

1PMT4133/TR7 Application Field and Working Principle

1PMT4133/TR7 is a single Zener diode with three distinct fields of application: general purpose, shunt regulation, and surge protection. It has a peak reverse power of 3.0 W and is suitable for a wide range of applications in low voltage and signal level signal conditioning.

General Purpose

1PMT4133/TR7 is commonly used for general circuit protection and as a reference point to control the voltage in a circuit. This diode can also be used in circuits to combat AC inter-electrode capacitance or to suppress the negative feedback of amplifiers.

Shunt Regulation

1PMT4133/TR7 can be used as a shunt regulator, ensuring that voltage levels fluctuate within a safe range in the event of unexpected peak discharge. The diode is designed to conduct excess electricity back to the source, rather than allow it to continue to circulate in the circuit, while keeping the voltage within required levels.

Surge Protection

1PMT4133/TR7 can also be used for surge protection. When used in series with a resistor, it can act as a voltage regulator to protect sensitive components in circuits from over-voltage and thermal overload.

Working Principle

1PMT4133/TR7 utilizes the Zener effect, in which electrical current crosses an abrupt junction between a p-type and n-type semiconductor material, causing electrons to flow from the n-type material to the p-type material. The junction then acts as a type of rectifier, allowing current to pass in one direction (from the n-type to the p-type material) while preventing it from passing in the other direction.

The Zener diode also has a reverse breakdown voltage, which is the voltage at which the diode begins to conduct in reverse, allowing the current to pass in both directions. This reverse breakdown voltage is what allows the 1PMT4133/TR7 to act as a voltage regulator by shunt regulating or by providing a low impedance path for excess current.

In summary, 1PMT4133/TR7 is an ideal single Zener diode for many applications, including general purpose, shunt regulation, and surge protection. It offers excellent protection from over-voltage and thermal overload, and its reverse breakdown voltage allows it to act as a voltage regulator to keep voltage within safe levels.