1N5917BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5917BUR-1 is a surface-mountable 1.5 W Zener diode in the JEDEC DO-213AB MELF package. It provides a nominal Zener voltage of 4.7 V with a 5% tolerance (suffix B). The device operates within a junction temperature range of -65°C to +175°C and features a maximum DC current of 319 mA. Electrical characteristics include a dynamic impedance of 5.0 Ohms at IZT and a reverse current of 5.0 µA at VR.

Single Zener Diodes Feature Summary

• Hermetically sealed glass package with tungsten slugs for enhanced reliability
• Metallurgically bonded internal contacts reducing thermal resistance
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Inherently radiation hard design suitable for harsh environments

Single Zener Diodes Applications

• High-density surface mounting requiring low parasitic effects
• Voltage regulation across broad ranges of operation current and temperature
• High reliability applications subject to source control drawings or MIL-PRF-19500 screening

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the datasheet nomenclature, as options such as RoHS compliance (e3) and reliability levels (MQ/MX/MV/MSP) alter the part number. Confirm tape and reel availability if TR suffix is required. Ensure sourcing aligns with the manufacturer's official documentation for the 1N5913BUR-1 through 1N5956BUR-1 series to guarantee electrical parameter accuracy.

Single Zener Diodes Selection Notes

Select this component when a hermetic, leadless surface-mount Zener diode is required for high-reliability circuits. The DO-213AB MELF package offers superior thermal performance compared to standard plastic packages. Consider the 5% tolerance and 4.7 V nominal voltage for precision regulation needs. Evaluate the radiation hardness and ESD robustness for aerospace or defense applications where standard commercial parts may fail.

Single Zener Diodes Part Context

This device belongs to the 1N5913BUR-1 through 1N5956BUR-1 series, which are surface-mount equivalents of the JEDEC registered 1N5913B through 1N5956B axial-leaded diodes. The series covers Zener voltages from 3.3 V to 200 V. It is also historically identified as the CDLL5913B through CDLL5956B series featuring enhanced metallurgical bonds.

Single Zener Diodes Replacement Considerations

Direct replacements include the 1N5917B (axial-leaded) or SMBG(J)5917B (SMB tabbed surface mount) from the same product family. Verify that substitute packages meet the required thermal resistance and hermetic sealing specifications for the application environment.