1N5222B

Single Zener Diodes Overview

The Microchip Technology 1N5222B is a silicon unidirectional Zener voltage regulator diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It provides a nominal Zener voltage of 2.5 V with a ±5% tolerance, tested at a current of 20 mA. The device supports a maximum power dissipation of 0.5 W and operates within a temperature range of -65°C to +175°C junction temperature. Key electrical characteristics include a maximum reverse leakage current of 100 µA at 1 V and a maximum Zener impedance of 30 Ω.

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 reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific suffix 'B' indicates the required ±5% tolerance during procurement. Confirm that the component meets RoHS compliance requirements if applicable, as standard versions may differ from e3 variants. Ensure the ordering documentation specifies the correct JEDEC registered type number for quality assurance purposes.

Single Zener Diodes Selection Notes

Select this component when a precise 2.5 V reference is needed with tight tolerance limits. The DO-35 package suits through-hole mounting where space allows. Consider the negative temperature coefficient for low-voltage Zener operation when designing thermal compensation networks.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W glass axial-lead Zener diodes. The series covers a wide voltage selection from 2.4 V to 200 V. The 'B' suffix specifically denotes a tighter manufacturing tolerance compared to the standard 'A' suffix or non-suffix variants.

Single Zener Diodes Replacement Considerations

The 1N5222A serves as a parameter equivalent with a wider ±10% tolerance. Other series members like 1N5221 or 1N5223 offer different voltage ratings but share the same package and power dissipation characteristics.