1PMT5921BT1G

Diodes - Zener - Single

The 1PMT5921BT1G is a single zener diode with a power rating of 500 mW and an off-state voltage of 9.1 V. It is designed to provide electrical isolation of circuits within a wide range of temperature fluctuations, as well as an improved level of noise-immune performance. This type of diode is used in a variety of applications from voltage regulation to switch mode power supplies to optical isolation circuits.

Applications

The 1PMT5921BT1G is designed for stabilizing voltage in the general voltage-regulating circuit that minimizes emission noise and withstands pulse leakage current. It is appropriate for such equipment as a microcontroller, AC adapter, LED lighting, display unit, notebook computer, set-top box and more.This type of diode can also be used as “crowbar” circuit to protect electronic circuits from sudden voltage spikes. The higher breakdown voltage also makes them more suitable for power supplies and high-frequency circuits alike.

Working Principle

Zener diodes are diodes that are specially designed to handle higher voltages. During reverse bias the electric field across the diode exceeds its avalanche voltage, which causes the electrons to be accelerated to higher energies. When the electrons gain enough energy, they generate additional carriers of the opposite charge after collision with atoms in the crystal lattice. This process maintains a stable, low voltage on the diode’s output, regardless of the input voltage, providing a stable voltage reference. This stability makes it ideal for use as a voltage reference in a variety of applications.

Conclusion

The 1PMT5921BT1G single zener diode is an ideal choice for applications where voltage regulation and improved noise immunity is required. Its high power rating and wide voltage range make it suitable for a variety of applications, including power supplies, optical circuits, and voltage regulators. Its working principle also makes it suitable for protecting electronic circuits from sudden voltage spikes.