1N5280B

Single Zener Diodes Overview

The Microchip Technology 1N5280B is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 190 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 2400 μA at 170 V. Its electrical characteristics include a test current of 2.6 mA, a dynamic impedance of 2400 Ω at 2.6 mA, and a temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for reliable operation
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge (ESD)
• Minimal capacitance across operating conditions

Single Zener Diodes Applications

• Voltage regulation over broad operating current ranges
• Reference voltage generation in electronic circuits
• Overvoltage protection applications

Single Zener Diodes Procurement Notes

Verify that the part number includes the correct suffix to confirm specific tolerance levels and RoHS compliance status. Ensure the ordering prefix matches the required screening level if military specifications are necessary. Confirm the package type aligns with the intended through-hole mounting requirements before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a stable 190 V reference is required in high-reliability environments. The DO-35 glass package offers robust thermal performance and hermetic sealing. Consider the positive temperature coefficient for circuit stability at elevated temperatures compared to lower voltage alternatives.

Single Zener Diodes Part Context

This device belongs to the JEDEC registered 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series covers a wide voltage selection from 2.4 V to 200 V. Variants are available with different tolerance suffixes and optional internal metallurgical bonds for enhanced durability.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package. These options provide similar electrical characteristics in a compact form factor suitable for automated assembly processes.