1N5519BUR-1/TR

Overview

The Microchip Technology 1N5519BUR-1/TR 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 the DO-204AH (DO-35) axial leaded package and supports through-hole mounting. Key electrical parameters include a maximum power dissipation of 500 mW, a test current of 20 mA, and a Zener impedance of 24 Ohms. The component exhibits a maximum reverse leakage current of 3 µA at 1 V. It functions within an extended temperature range from -65 °C to +175 °C junction temperature.

Feature Summary

• Provides stable voltage regulation via Zener breakdown characteristics
• Supports high-temperature operation up to 175 °C junction temperature
• Utilizes axial leaded packaging for through-hole circuit integration

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Biasing networks for semiconductor components

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure that the procurement source provides valid manufacturer traceability and quality certifications. Cross-reference the part number with the latest datasheet to validate electrical tolerances and thermal ratings before finalizing acquisition orders.

Selection Notes

Select this component when a 3.6 V regulation point is required within a through-hole design architecture. Consider the 500 mW power dissipation limit and the 24 Ohm impedance value for load regulation requirements. Evaluate the extended temperature range suitability for harsh environmental conditions compared to standard commercial grade alternatives.

Part Context

This component belongs to the 1N55xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage options within the DO-35 package style. The 1N5519 variant specifically targets the 3.6 V market segment, providing a standardized solution for legacy and modern mixed-signal designs requiring reliable voltage clamping.

Replacement Considerations

Direct substitutes include other manufacturers' 1N5519B equivalents meeting identical electrical specifications. Verify pinout compatibility and thermal performance characteristics when transitioning between different production sources.