1N5222BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5222BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 2.5 V at a test current of 20 mA. It features a maximum power dissipation of 0.5 W and a dynamic impedance of 30 Ohms at the test point. The device operates within a junction temperature range of -65°C to +175°C and exhibits a reverse leakage current of 100 µA at 1 V. Packaged in a hermetically sealed DO-213AA (MLL34) glass MELF configuration, it provides a metallurgically bonded surface mount equivalent to the axial 1N5222 series.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA package with internal metallurgical bond for enhanced reliability.
• Surface mount form factor serving as an equivalent replacement for the JEDEC registered 1N5221 through 1N5281 axial series.
• Inherently radiation hard construction suitable for demanding environments.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges.
• Reference voltage generation in precision circuits.
• Protection against electrostatic discharge events.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the presence of the TR suffix indicates tape and reel packaging per EIA-481-B standards. Ensure the component meets MIL-PRF-19500 screening requirements if applicable to the design specifications.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The 1N5222BUR-1 offers a 5% voltage tolerance and 0.5 W power rating. Consider the low capacitance characteristics for high-speed signal paths and verify thermal derating curves for the specific PCB footprint used.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of metallurgically bonded glass surface mount Zeners. These devices provide a direct surface mount alternative to traditional axial-leaded components while maintaining similar electrical performance profiles across a wide voltage range from 2.4 V to 200 V.

Single Zener Diodes Replacement Considerations

Direct functional equivalents include the axial 1N5222B or 1N5222A variants. For surface mount replacements, verify pinout compatibility and ensure the substitute component supports the required hermetic sealing and radiation hardness levels specified in the original design.

Single Zener Diodes FAQ

What is the maximum solder temperature allowed for this component?

The maximum solder temperature is 260°C applied for a duration of 10 seconds.

How is polarity indicated on the DO-213AA package?

Polarity is indicated by a cathode band; the banded end must be positive with respect to the opposite end during Zener regulation operation.