1N5276B (DO-35)

Single Zener Diodes Overview

The Microsemi 1N5276B is a silicon planar Zener voltage regulator diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It provides a nominal Zener voltage of 150 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 dissipates up to 0.5 watts at 25°C. Key electrical parameters include a maximum reverse current of 10 µA at 100 V, a Zener impedance of 1500 Ohms at IZT, and a positive voltage temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction
• Inherently radiation hard per MicroNote 050
• Minimal capacitance characteristics
• Non-sensitive to ESD

Single Zener Diodes Applications

• Voltage stabilization over broad operating ranges
• Reference voltage generation in precision circuits
• Protection against voltage transients

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required tolerance level, as the 'B' suffix specifically denotes a ±5% voltage tolerance. Confirm RoHS compliance status by checking for the 'e3' suffix if lead-free soldering processes are mandated. Ensure the procurement specification aligns with the manufacturer's JEDEC registration standards for this component series.

Single Zener Diodes Selection Notes

Select this component when a high-voltage reference near 150 V is required in a through-hole application. Consider the positive temperature coefficient for thermal stability analysis in high-temperature environments. Verify that the power dissipation requirements do not exceed the 0.5 W limit without applying appropriate derating curves based on ambient temperature.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators manufactured by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 2.4 to 200 volts in the DO-35 package. These devices are JEDEC registered and available in various screening levels and tolerance options.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF style package. Glass body axial-leaded DO-7 equivalents are also offered by the manufacturer.