1N5221B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5221B/TR is a 0.5 W glass axial-lead Zener diode with a nominal voltage of 2.4 V and ±5% tolerance. It operates within a temperature range of -65°C to +175°C, features a maximum reverse current of 1200 µA at 1 V, and has a maximum Zener impedance of 30 Ω at 20 mA test current. The device utilizes a DO-35 package and includes a tape-and-reel option for automated assembly.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features internal metallurgical bonds for enhanced reliability
• Offers minimal capacitance characteristics suitable for high-frequency applications
• Includes flexible axial-lead mounting terminals for through-hole integration

Single Zener Diodes Applications

• Voltage reference circuits requiring precise low-voltage regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance and screening levels. Ensure the ordering code matches the required tolerance and packaging format. Cross-reference part numbers with manufacturer documentation to validate authenticity and technical specifications before procurement.

Single Zener Diodes Selection Notes

Select this component when a 2.4 V Zener voltage with tight 5% tolerance is required. Consider the 0.5 W power dissipation limit and the -65°C to +175°C operating range. Verify that the DO-35 axial-lead package fits the board layout constraints and that the low capacitance meets circuit requirements.

Single Zener Diodes Part Context

This device belongs to the JEDEC registered 1N5221 through 1N5281B series of 0.5 W Zener voltage regulators. The series provides a wide selection of voltages from 2.4 V to 200 V in standard DO-35 packages. The 'B' suffix indicates a standard 5% voltage tolerance, while the 'TR' suffix denotes tape-and-reel packaging availability.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package. Other tolerance options include A (10%), C (2%), and D (1%). Military screening levels can be obtained by adding specific prefixes to part numbers with the '-1' suffix.