1N4558B

Single Zener Diodes Overview

The Microchip Technology 1N4558B is a high-power Zener diode belonging to the JEDEC registered 1N2804B through 1N2846B series. It provides voltage regulation with a nominal Zener voltage of 7.5 V and a maximum power dissipation of 50 W. The device features a TO-204AD (TO-3) through-hole package, suitable for robust industrial applications. Key electrical characteristics include a reverse leakage current of 50 µA at 5.4 V and a forward voltage drop of 1.5 V at 10 A. The unit operates within a temperature range of -65°C to 175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in high-power circuits up to 50 watts.
• Features low impedance and tight tolerance for precise reference applications.
• Designed for through-hole mounting in rugged environments.

Single Zener Diodes Applications

• High-power voltage regulation
• Overvoltage protection circuits
• Precision voltage references

Single Zener Diodes Procurement Notes

Verify the specific suffix against the official datasheet to confirm tolerance and qualification level. Ensure the procurement documentation matches the required MIL-PRF-19500/114 grade if military specifications are mandated. Confirm package integrity upon receipt.

Single Zener Diodes Selection Notes

Select this component when a 50-watt power rating and 7.5-volt regulation are required. Consider the TO-204AD footprint for mechanical compatibility. Evaluate thermal management requirements given the high power dissipation capability and operating temperature range.

Single Zener Diodes Part Context

This part is part of a broader family of 50-watt Zener diodes from Microchip Technology. The series includes various voltage ratings from 3.9 V to 200 V, sharing common packaging and qualification standards. It serves as a standard solution for heavy-duty power supply regulation tasks.

Single Zener Diodes Replacement Considerations

Consult the manufacturer's cross-reference guide for verified equivalents. Ensure any substitute maintains the 50 W power rating and TO-204AD package dimensions for direct replacement.