1N5280DO35

Single Zener Diodes Overview

The Microsemi Corporation 1N5280DO35 is a 0.5-watt glass axial-lead Zener diode housed in a DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 190 V with a test current of 0.66 mA. The device features a maximum reverse leakage current of 0.1 µA at 137 V and a maximum Zener impedance of 6500 Ohms at a knee current of 0.25 mA. It operates within a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Inherently radiation hard per MicroNote 050
• Minimal capacitance characteristics suitable for high-frequency applications
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current ranges
• Temperature compensation circuits
• Reference voltage sources in harsh environments

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the datasheet, as standard JEDEC types may differ from tighter tolerance variants. Confirm RoHS compliance status if required by the assembly process, noting that e3 suffixes denote compliant devices. Ensure the ordering prefix matches any necessary military screening levels such as JAN or JANS.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 190 V reference point in a low-power environment. Consider the high dynamic impedance when designing for load regulation requirements. Verify thermal derating curves are respected if ambient temperatures exceed standard conditions. Evaluate the DO-35 package constraints for PCB layout space.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5-watt Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 to 200 volts. Variants are available with different tolerance suffixes and military screening prefixes to meet specific reliability standards.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package. Cross-reference with other manufacturers' 1N5280 equivalents ensuring identical power dissipation and voltage ratings.