1N5519C

Overview

The Microchip Technology 1N5519C is a single Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 3.6 V with a tight tolerance of ±2%. The device is rated for a maximum power dissipation of 500 mW at ambient temperature. It utilizes a DO-204AH (DO-35) axial leaded package, suitable for through-hole mounting. Key electrical characteristics include a test current of 20 mA and an impedance of 24 Ohms.

Feature Summary

• Provides stable voltage regulation under reverse bias conditions
• Offers high precision with a narrow ±2% voltage tolerance
• Constructed in a hermetically sealed glass axial package

Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• Clamping applications in low-voltage systems

Procurement Notes

Verify the specific suffix designation to confirm tolerance and packaging variations. Ensure the procurement source provides traceability documentation required for aerospace or military specifications if applicable. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and compliance with RoHS directives where indicated.

Selection Notes

Select this component when a precise 3.6 V reference is required with minimal deviation. The ±2% tolerance makes it suitable for sensitive analog circuits. Consider the 500 mW power rating to ensure adequate thermal headroom in the final assembly. The DO-35 package dictates the PCB footprint and mounting constraints.

Part Context

This component belongs to the standard 1N55xx series of low-power Zener diodes manufactured by Microchip Technology. The series offers various voltage options within the same physical package form factor. The 'C' suffix typically denotes the specific voltage tolerance grade, distinguishing it from other variants in the family that may have wider tolerances.

Replacement Considerations

Direct substitutes include the 1N5519B-1 from Microsemi, which shares similar electrical parameters but may differ in tolerance or hermetic sealing requirements. Verify pinout compatibility and package dimensions before substitution.