1N5519A

Overview

The Microchip Technology 1N5519A is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.6 V with a tolerance of 5%. The device operates in a DO-35 axial through-hole package and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 3 µA, a Zener impedance of 24 Ω at a test current of 20 mA, and a forward voltage of 1.1 V. It supports an operating temperature range from -65 °C to +175 °C.

Feature Summary

• Provides stable voltage regulation via Zener breakdown characteristics
• Capable of operation across extended industrial temperature ranges
• Utilizes a standard axial leaded package for through-hole mounting

Applications

• Voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog electronics

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact tolerance and testing standards. Ensure the procurement channel provides valid traceability records. Confirm RoHS compliance status as indicated in the latest datasheet revision. Validate that the component matches the required thermal and electrical specifications for the target application environment before finalizing orders.

Selection Notes

Select this component when a precise 3.6 V reference is required within a low-power design. Consider the 5% voltage tolerance and 24 Ω impedance for circuit stability analysis. Evaluate the 500 mW power dissipation limit relative to ambient temperature derating curves. Compare the axial package dimensions against available PCB real estate constraints.

Part Context

This part belongs to the standard 1N55xx series of glass-passivated Zener diodes manufactured by Microchip Technology. These components are widely utilized in general-purpose electronic circuits requiring reliable voltage clamping or reference functions. The series offers consistent performance across various industrial and commercial applications.

Replacement Considerations

Cross-reference with other manufacturers' 1N5519A equivalents to ensure pinout and electrical parameter compatibility. Verify that substitute parts meet the same 500 mW power rating and temperature specifications.