1N4561A

Single Zener Diodes Overview

The Microchip Technology 1N4561A is a high-power silicon unidirectional Zener voltage regulator diode designed for through-hole mounting in the TO-204AD (TO-3) package. It features a nominal Zener voltage of 5.6 V with a tolerance of ±10% and a maximum power dissipation of 50 W. The device exhibits a maximum dynamic impedance of 0.12 Ohms and operates within a junction temperature range of -65°C to 175°C. Reverse leakage current is specified at 20 µA at 1 V, while forward voltage drop is 1.5 V at 10 A.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a high-power 50 W silicon Zener structure.
• Engineered for robust thermal performance with an extended operating temperature range up to 175°C.
• Utilizes a metal flange mount package for efficient heat dissipation in high-current applications.

Single Zener Diodes Applications

• High-power voltage reference circuits requiring stable regulation under significant load conditions.
• Industrial power supply protection systems utilizing through-hole mounting standards.
• Military and aerospace electronic assemblies qualified for extreme environmental temperatures.

Single Zener Diodes Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official Microchip Technology documentation. Confirm that the specific revision matches the required electrical tolerances and package dimensions. Ensure compliance with project specifications regarding non-RoHS status and military qualification levels if applicable. Validate supplier authorization to prevent counterfeit components.

Single Zener Diodes Selection Notes

Select this component when designing circuits requiring high power handling capabilities exceeding standard small-signal diodes. The TO-204AD package necessitates appropriate heatsinking strategies due to the 50 W dissipation rating. Consider the ±10% voltage tolerance for precision requirements and ensure the PCB layout supports the physical dimensions and thermal needs of the flange-mounted device.

Single Zener Diodes Part Context

This device belongs to the 1N4561 series of high-power Zener diodes manufactured by Microchip Technology. It serves as a commercial-grade variant within a broader family that includes military-qualified versions such as the JANTX1N4561B. The series provides reliable voltage regulation solutions for demanding industrial and defense applications where stability and power handling are critical design parameters.

Single Zener Diodes Replacement Considerations

The 1N4561C is documented as a parameter-equivalent substitute available from Microchip Technology. Verify mechanical fit and electrical compatibility before substitution.