1N5280BE3

Single Zener Diodes Overview

The Microchip Technology 1N5280BE3 is a 500 mW glass axial-lead Zener diode housed in a DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 190 V with a standard tolerance of ±5% for the B suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 10 µA at 137 V. Electrical characteristics include a test current of 0.66 mA, a maximum Zener impedance of 2400 Ohms at IZT, and a maximum temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance suitable for high-frequency applications
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance as specified by the manufacturer. Confirm the 'B' suffix indicates the required ±5% voltage tolerance. Ensure the component meets the specific thermal resistance requirements for your mounting configuration, noting the difference between lead-mounted and board-mounted power dissipation limits.

Single Zener Diodes Selection Notes

Select this component when a 190 V Zener voltage is required in a through-hole DO-35 package. Consider the ±5% tolerance if tighter precision is not needed. Evaluate the thermal derating curve for high-temperature environments above 50°C. Verify that the low capacitance characteristic aligns with circuit signal integrity requirements.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 2.4 V to 200 V in the standard DO-35 glass axial-lead package. These devices are JEDEC registered and available in various screening levels and tolerance options.

Single Zener Diodes Replacement Considerations

Equivalent parts include the non-RoHS 1N5280B or variants with different suffixes such as 1N5280A for 10% tolerance. Surface mount equivalents like MLL5280B are available in the DO-213AA MELF package.