1N5249BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5249BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 19 V and a maximum power dissipation of 0.5 W. It features a 5% voltage tolerance, a test current of 6.6 mA, and a dynamic impedance of 23 Ohms at the test point. The device operates within a junction temperature range of -65°C to +175°C and utilizes a hermetically sealed DO-213AA (MELF) package.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 series
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• ESD protection applications requiring minimal capacitance
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm RoHS compliance status and reliability level. Ensure the procurement documentation explicitly references the DO-213AA package type and the correct electrical tolerances for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability environments. The DO-213AA package provides a direct footprint alternative to axial leads while maintaining radiation hardness. Confirm that the 19 V breakdown voltage aligns with the circuit's regulation requirements and thermal derating curves.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which offers a comprehensive range of Zener voltages from 2.4 V to 200 V in a single surface mount form factor. The series maintains consistent physical dimensions and mounting characteristics across all voltage variants, simplifying inventory management for designs requiring multiple regulation levels.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent substitutes include the 1N5249B-1 and MX1N5249BUR-1TR. Verify compatibility regarding package dimensions, pinout polarity, and maximum ratings before substitution.