1PMT5954A/TR13

Diodes - Zener - Single: 1PMT5954A/TR13 Application Field and Working Principle

Zener diodes are used for regulating the voltage in a system and are a very important component in power electronics designs. The 1PMT5954A/TR13 Zener diode is a single type of Zener diode and specializes in low power voltage regulation. This application note details the characteristics and use of the 1PMT5954A/TR13 and explains the working principle behind its operation.

What is a Zener Diode?

A Zener diode is a specialized type of diode most commonly used for voltage regulation in power systems. Zener diodes differ from standard diodes in their construction and the effects it produces. The Zener diode has a different junction structure than other diodes, creating a reverse-bias breakdown at a specific Zener voltage. When the Zener diode is in forward bias mode, it behaves like a short circuit and does not function as a voltage regulator.

1PMT5954A/TR13 Characteristics

The 1PMT5954A/TR13 Zener diode is a single type of Zener diode, meaning it is specifically designed for use in voltage regulating applications. It features a low power dissipation for efficiency and a high peak current tolerance, making it suitable for use in electric circuits. It is designed with a single-stage silicon oxide passivation layer to protect against electric breakdown, and its integrated mounting hole allows for easy installation. The 1PMT5954A/TR13 is rated to have a regulation voltage of 5.9V and a Zener voltage of 6.2V, with a peak voltage rating of 6.8V. Furthermore, the maximum reverse power dissipation is 200mW, and the maximum surge current rating is 50A.

1PMT5954A/TR13 Application

The 1PMT5954A/TR13 is most often used for low-voltage voltage regulation applications in electronic circuits, such as stabilizing voltage levels in power supplies or voltage regulation in low voltage equipment. It is also suitable for protecting power transistors from over-voltage transients and limiting the flyback voltage on inductive type loads. Additionally, it can be used to reduce voltage ripple, provide noise immunity and increase circuit stability. This diode can also be used as a temperature compensating device in temperature sensing circuits.

Working Principle

Zener diodes function on the principle of reverse breakdown. When a reverse bias voltage is applied to the diode, the diode\'s internal electric field increases until it reaches the breakdown voltage, which is determined by the Zener voltage of the specific Zener diode. At this voltage, the electric field is strong enough to break down the junction and cause current to flow in the opposite direction. This reverse current allows for the controlled regulation of voltage in a system. The temperature coefficient of a Zener diode is also considered, as the Zener voltage of the diode changes with temperature, and the diode must be able to keep the system voltage within tolerance.

Conclusion

The 1PMT5954A/TR13 Zener diode is a single type of low-power Zener diode, designed for use in voltage regulating applications. Its low power consumption and convenient mounting hole allows for efficient and easy installation. The diode functions on the principle of reverse breakdown, which is determined by the Zener voltage of the specific Zener diode. The 1PMT5954A/TR13 is suitable for voltage regulation applications in power supplies, protecting transistors from over-voltage transients and providing temperature compensation.