1N5519D

Overview

The Microchip Technology 1N5519D is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.6 V with a tight tolerance of ±1%. The device operates in a DO-204AH (DO-35) axial through-hole package and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 3 µA at 1 V, a Zener impedance of 24 Ohms, and a forward voltage of 1.1 V at 200 mA. It supports a wide operating temperature range from -65°C to +175°C junction temperature.

Feature Summary

• Provides precise voltage regulation with a tight ±1% tolerance on the 3.6 V Zener voltage.
• Capable of high-temperature operation with a junction temperature rating extending to +175°C.
• Utilizes a glass-passed silicon chip construction within a standard DO-35 axial leaded package.

Applications

• Precision voltage reference circuits requiring low tolerance stability.
• Overvoltage protection stages in sensitive electronic systems.
• Clamping applications in signal processing paths.

Procurement Notes

Verify the specific suffix designation when ordering, as packaging formats such as bulk or tape-and-reel may vary by manufacturer lot. Confirm that the required tolerance matches the ±1% specification inherent to the 'D' suffix variant. Ensure procurement channels provide original manufacturer documentation to validate authenticity and traceability for quality assurance purposes.

Selection Notes

Select this component when a stable 3.6 V reference is needed with strict tolerance requirements. The ±1% accuracy distinguishes it from standard commercial variants. Consider the DO-35 package constraints for board space and the 500 mW power dissipation limit under thermal analysis. Verify compatibility with the intended operating temperature range for the specific application environment.

Part Context

This part belongs to the 1N55xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage options in the DO-35 package. The 'D' suffix specifically denotes the tighter ±1% voltage tolerance compared to other commercial grades like 'B' or 'C'.

Replacement Considerations

Equivalent parts include JAN1N6313D and JANTX1N6313D from Microchip Technology, which share similar electrical characteristics and package types.