1N5266BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5266BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA (SOD80/MLL34) surface mount package. It provides a nominal Zener voltage of 68 V at a test current of 1.8 mA with a maximum dynamic impedance of 230 Ohms and a reverse leakage current of 100 nA. The device features a positive temperature coefficient of +0.097 %/°C, operates within a junction temperature range of -65°C to +175°C, and includes an internal metallurgical bond.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond
• Surface mount equivalent to JEDEC registered 1N5221 series
• Inherently radiation hard per Microsemi specifications
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage generation in radiation-hardened environments
• ESD protection circuits requiring minimal capacitance

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for your application, as the 'B' indicates a 5% tolerance while other suffixes denote different tolerances or RoHS compliance status. Confirm whether MIL-PRF-19500 screening is required, as this affects part availability and nomenclature. Ensure the commercial grade version meets environmental standards if RoHS compliance is mandatory for your assembly process.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution matching the electrical characteristics of the axial 1N5266B is needed. The DO-213AA package offers a compact footprint suitable for high-density PCB layouts. Consider the positive temperature coefficient for applications where voltage stability increases with temperature, and verify that the 230 Ohm dynamic impedance aligns with the noise and regulation requirements of the circuit design.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as the surface mount counterpart to the widely used JEDEC registered 1N5221 through 1N5281 axial diode series. The series covers a voltage range from 2.4 V to 200 V, providing designers with extensive options for various regulation needs while maintaining consistent packaging and performance characteristics across the product line.

Single Zener Diodes Replacement Considerations

The 1N5266B/TR is the axial leaded equivalent offering identical electrical parameters in a DO-35 package.