1N5224B

Single Zener Diodes Overview

The Microchip Technology 1N5224B is a 0.5 W glass axial-lead Zener diode housed in a DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 2.8 V with a ±5% tolerance, tested at a current of 20 mA. The device features a maximum reverse leakage current of 75 µA at 1 V and a maximum dynamic impedance of 30 Ω. Operating temperatures range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance for high-frequency applications
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the manufacturer origin, as the component was originally produced by Microsemi Scottsdale Division. Confirm that the specific ordering suffix matches the required tolerance level and compliance standards. Ensure the package type corresponds to the standard axial-lead configuration.

Single Zener Diodes Selection Notes

Select this component when a precise 2.8 V reference is required within a low-power environment. The DO-35 package supports through-hole mounting. Consider the negative temperature coefficient for thermal stability requirements in the design phase.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 to 200 volts. These devices are JEDEC registered and utilize a hermetically sealed glass body.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF style package. RoHS compliant versions can be identified by adding the 'e3' suffix to the part number.

Single Zener Diodes FAQ

What is the maximum power dissipation rating?

The maximum power dissipation is 0.5 watts at an ambient temperature of 25°C.

How is polarity indicated on the component?

Polarity is indicated by a band on the cathode end of the glass body.