1N5281BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5281BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 200 V. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device features a hermetically sealed DO-213AA glass package with internal metallurgical bonding. Electrical characteristics include a maximum reverse leakage current of 7,000 µA at the rated voltage and a positive temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed surface mount package with internal metallurgical bond
• Inherently radiation hard per Microsemi specifications
• Non-sensitive to electrostatic discharge
• Minimal capacitance across operating voltage ranges

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic systems requiring radiation hardness
• Surface mount circuit designs replacing axial-leaded equivalents

Single Zener Diodes Procurement Notes

Verify the specific tolerance suffix required for the application, as the base part number indicates standard tolerances. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are available on commercial grade only. Ensure sourcing channels provide documentation regarding MIL-PRF-19500 screening availability if military-grade reliability is mandated.

Single Zener Diodes Selection Notes

Select this component when a high-voltage Zener regulator in a compact surface mount form factor is required. The DO-213AA package serves as a direct equivalent to the JEDEC registered 1N5281 series. Consider the positive temperature coefficient and high leakage current typical of voltages above 200V when designing biasing networks.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener voltage regulators. The series provides surface mount equivalents to popular JEDEC registered axial-leaded diodes. The manufacturer offers various tolerance options and packaging configurations to meet diverse power and reliability requirements.

Single Zener Diodes Replacement Considerations

The 1N5281B-1 is an available axial-leaded alternative within the same product family.