1N4561RB

Single Zener Diodes Overview

The Microchip Technology 1N4561RB is a high-power silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a maximum power dissipation of 50 W. The device exhibits a maximum dynamic impedance (Zzt) of 0.12 Ohms and a reverse leakage current of 20 µA at 1 V. It operates within a temperature range of -65°C to 175°C junction temperature and utilizes a TO-204AD (TO-3) through-hole package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in high-power circuits using a robust silicon construction.
• Capable of dissipating up to 50 W of power, suitable for demanding industrial environments.
• Features low dynamic impedance to maintain consistent voltage under varying load conditions.

Single Zener Diodes Applications

• High-power voltage reference circuits
• Industrial power supply protection
• Over-voltage clamping in heavy-duty equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix RB against official Microchip documentation to confirm exact tolerance and testing requirements. Ensure compatibility with existing thermal management solutions due to the 50 W power rating. Confirm RoHS status as commercial versions may not be compliant. Validate that the TO-204AD mounting style matches the target PCB or chassis design constraints.

Single Zener Diodes Selection Notes

Select this component when a 5.6 V regulation point is required with significant power handling capabilities. The TO-204AD package necessitates adequate heatsinking to manage the 50 W dissipation effectively. Consider the ±10% tolerance if tighter precision is not critical. Evaluate the operating temperature range to ensure suitability for extreme environmental conditions.

Single Zener Diodes Part Context

The 1N4561RB belongs to the 1N45xx series of 50 Watt Zener diodes manufactured by Microchip Technology. This series is widely recognized for its reliability in high-power discrete semiconductor applications. The part shares core electrical characteristics with other variants in the family, differing primarily in packaging or specific qualification levels.

Single Zener Diodes Replacement Considerations

The 1N4561C is documented as a parameter-equivalent substitute from Microchip Technology. Verify mechanical fit and thermal performance when substituting. Cross-brand replacements require careful validation of pinout and voltage tolerances.