1N5223A

Single Zener Diodes Overview

The Microchip Technology 1N5223A is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 2.7 V with a test current of 20 mA and a maximum reverse current of 75 µA at 1 V. The device features a maximum Zener impedance of 30 Ohms at 0.25 mA and a temperature coefficient of -0.080 %/°C. Operating temperatures range from -65°C to +175°C, with a forward voltage of 1.5 V maximum at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance characteristics suitable for high-frequency applications
• Inherently radiation hard per MicroNote 050 specifications

Single Zener Diodes Applications

• Voltage reference circuits requiring low capacitance
• Protection against electrostatic discharge (ESD)
• General-purpose voltage regulation in industrial environments

Single Zener Diodes Procurement Notes

Verify the specific suffix letter on the component marking to confirm tolerance class. The 'A' suffix indicates a 10% tolerance, while the 'B' suffix denotes a 5% tolerance. Ensure the procurement order explicitly states the required tolerance level to match the design specifications. Confirm RoHS compliance status if environmental regulations apply to the final assembly.

Single Zener Diodes Selection Notes

Select this component when a precise 2.7 V reference is needed within the 0.5 W power dissipation limit. Consider the negative temperature coefficient for thermal stability requirements. Verify that the application circuit can accommodate the specified leakage current and impedance values under worst-case operating conditions.

Single Zener Diodes Part Context

This part belongs to the JEDEC registered 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 in standard tolerances. These devices are manufactured by Microsemi Scottsdale Division, now part of Microchip Technology, utilizing hermetically sealed glass axial-lead packages.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available as MLL5223 in the DO-213AA MELF style package. Other manufacturers may offer direct replacements within the 1N52xx series, provided the voltage, power rating, and package type are compatible.