1PMT4110CE3/TR13

Diodes - Zener - Single

The 1PMT4110CE3/TR13 is a small size monolithic zener diode withbuilt-in resistors, dynamic impedance and a built-in low capacitance protection diode. It is packaged in a SOT-23 package. The device is used for applications such as short-circuit protection, secondary breakdown protection, current-limited supply and general logic circuit proteciton.

Application Field and Working Principle

1PMT4110CE3/TR13 is a voltage regulator used in a variety of applications including switching power supplies, DC-DC converters, and general electronic circuit protection. The major application fields of the device include Secondary Breakdown Protection, Current Limiting Supply, Short circuit protection, General Logic Circuit Protection, etc. The device consists of an array of six Zener diodes connected in parallel, with each Zener diode rated for a voltage drop of 4.7V or 5.25V, respectively. It is designed to accurately regulate the output voltage of an AC to DC or DC to DC converter and provide a lower, more stable voltage to protect downstream circuits.

When the input voltage to the circuit exceeds the Zener diode\'s breakdown voltage, a current begins to flow. This current further increases, causing the voltage across the Zener diode to hold steady. This ensures the output of the circuit remains the same irrespective of the input voltage, thereby providing a stable output voltage. This is achieved by the dynamic impedance of the device that decreases as the input voltage increases. The device also consists of an internal low capacitance protection diode that serves as an additional layer of protection against unexpected transients.

Another noteworthy working principle of the 1PMT4110CE3/TR13 is its temperature compensation feature. It compensates for the shift in the Zener voltage with temperature, by using the internal resistors to automatically adjust the Zener voltage in accordance with the ambient temperature. This greatly helps in maintaining a reliable output voltage regardless of the varying input voltage and temperatures.

Conclusion

The low size, low cost and reliable performance of the 1PMT4110CE3/TR13 make it an ideal solution for applications like secondary breakdown protection, current-limited supply, and general logic circuit protection. With its temperature compensation feature, it can provide an accurate and consistent output voltage even in varying temperatures.