1N5280BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5280BUR-1 is a surface mount Zener voltage regulator in the DO-213AA package. It provides a nominal Zener voltage of 190 V with a tolerance of ±5%. The device operates at a test current of 0.66 mA and dissipates up to 0.5 W. Maximum reverse leakage current is 0.1 µA, and dynamic impedance is 6500 Ohms at the knee current. It functions within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond
• Surface mount equivalent of JEDEC registered 1N5221 thru 1N5281 series
• Inherently radiation hard per Microsemi documentation
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Protection circuits requiring minimal capacitance
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm voltage tolerance and RoHS compliance status. Confirm whether screening in reference to MIL-PRF-19500 is required for the intended application environment. Ensure the ordering suffix matches the desired reliability level and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-voltage regulation applications. The 1N5280BUR-1 offers a 190 V nominal breakdown suitable for industrial or aerospace environments. Consider the low leakage current and radiation hardness characteristics when designing for harsh operational conditions.

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 axial-leaded JEDEC registered devices. These components utilize a metallurgically bonded glass construction to ensure durability and environmental sealing.

Single Zener Diodes Replacement Considerations

The 1N5280UR-1 is listed as a parameter-equivalent alternative.