1N5225BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5225BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA glass surface mount package. It provides a nominal Zener voltage of 3.0 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and features an internal metallurgical bond for enhanced reliability.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF-style package with internal metallurgical bond
• Surface mount equivalent to JEDEC registered 1N5221 series
• Inherently radiation hard per Microsemi documentation
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense electronics
• Radiation-hardened circuit protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm tolerance, RoHS compliance status, and screening level. Ensure the procurement specification matches the required MIL-PRF-19500 up-screening if applicable. Confirm package orientation markings and terminal plating options prior to ordering.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The 1N5225BUR-1 offers a 3.0 V breakdown voltage suitable for low-voltage reference circuits. Consider the negative temperature coefficient at this voltage level when designing thermal compensation networks.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 W Zener diodes. The series covers a voltage range from 2.4 V to 200 V in a metallurgically bonded configuration. It serves as the surface mount alternative to the traditional axial-leaded JEDEC registered 1N5221B through 1N5281B series.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' DO-213AA (MLL34) packaged Zener diodes rated for 3.0 V and 0.5 W. Verify that substitute components meet the same hermetic sealing and metallurgical bond requirements if used in radiation-hardened or military-grade environments.