1N5519B

Overview

The Microchip Technology 1N5519B is a low voltage avalanche Zener diode rated at 0.5 W, housed in an axial-lead glass DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 3.6 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse leakage current of 3 µA at the specified test voltage.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features hermetically sealed glass construction for environmental protection
• Offers flexible axial-lead mounting terminals for through-hole applications

Applications

• Voltage regulation circuits requiring stable reference voltages
• Protection against overvoltage conditions in sensitive electronics
• Clamping applications in signal processing paths

Procurement Notes

Verify that the specific order includes the correct suffixes if military qualification or metallurgical bonding is required. Confirm RoHS compliance status as it varies between commercial and qualified levels. Ensure the procurement documentation matches the exact JEDEC type number and tolerance class specified in the design requirements.

Selection Notes

Select this component when a precise 3.6 V reference is needed in a through-hole assembly. Consider the ±5% tolerance for general regulation tasks. Evaluate the thermal resistance and power derating curves if operating near the maximum junction temperature limits. Verify lead plating specifications against soldering process requirements.

Part Context

This part belongs to the 1N5518 thru 1N5546 series of low voltage avalanche Zener diodes. The series covers a voltage selection from 3.3 to 33 volts. These devices are designed for applications requiring reliable voltage regulation in compact axial packages.

Replacement Considerations

Consult the manufacturer's datasheet for direct equivalents within the same series. Verify pinout compatibility and electrical parameters before substituting.