1N5221

Single Zener Diodes Overview

The Microchip Technology 1N5221 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 2.4 V with a tolerance of ±20%. The device operates in a DO-204AH (DO-35) axial through-hole package and supports a maximum power dissipation of 500 mW. It exhibits a Zener impedance of 30 Ohms at a test current of 20 mA, with a reverse leakage current of 100 µA at 1 V. The component functions within an operating temperature range of -65°C to +175°C junction temperature.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single Zener diode configuration
• Supports high-temperature operation up to 175°C junction temperature
• Utilizes a standard DO-204AH axial leaded package for through-hole mounting

Single Zener Diodes Applications

• Voltage reference circuits requiring low voltage stabilization
• Overvoltage protection in sensitive electronic systems
• General-purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix or tape-and-reel designation when ordering, as availability varies between bulk and reel packaging formats. Confirm RoHS compliance status, as historical data indicates some variants may not meet current environmental standards. Ensure the supplier provides official datasheets matching the exact part number to confirm electrical parameters like tolerance and impedance before purchase.

Single Zener Diodes Selection Notes

Select this component when a precise 2.4 V reference is required with moderate tolerance. Consider the ±20% voltage tolerance for applications where strict precision is not critical. Evaluate the 500 mW power rating against expected circuit currents to ensure safe thermal operation. Verify that the axial through-hole form factor fits the target PCB layout constraints.

Single Zener Diodes Part Context

This component belongs to the 1N5221 through 1N5281B series of Zener diodes manufactured by Microchip Technology. These devices are widely used in discrete semiconductor applications requiring reliable voltage clamping. The series offers various voltage options within the same physical package, allowing for design flexibility across different voltage regulation needs.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N5221 equivalents. Verify pinout compatibility and ensure the substitute meets the 500 mW power dissipation and 2.4 V Zener voltage specifications. Check if the alternative component matches the DO-204AH package dimensions for mechanical fit.