1N5224B (DO-35)

Single Zener Diodes Overview

The Microsemi Corporation 1N5224B is a hermetically sealed glass axial-lead Zener diode in the DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 2.8 V with a standard tolerance of ±5%. The device operates at a test current of 20 mA and dissipates up to 0.5 watts at 25°C ambient temperature. Maximum reverse current is specified at 75 µA, while maximum Zener impedance is 140 Ohms at 0.25 mA. The unit features a negative temperature coefficient of -0.080 %/°C and withstands operating temperatures from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for corrosion resistance
• Flexible axial-lead mounting terminals
• Minimal capacitance characteristics
• Inherently radiation hard

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify that the part number includes the correct suffix to confirm specific electrical tolerances and compliance status. Confirm whether military screening prefixes or internal bond options are required for the intended application environment. Ensure the ordering specification matches the exact JEDEC registration requirements for the circuit design.

Single Zener Diodes Selection Notes

Select this component when a precise 2.8 V reference is needed within a through-hole glass package. Consider the B suffix for tighter voltage tolerances compared to standard A suffix devices. Evaluate thermal derating curves if the operating environment exceeds standard ambient conditions or requires high power dissipation.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection of voltages ranging from 2.4 to 200 volts. These components are widely used in general-purpose electronic applications requiring stable voltage references.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5224B variants meeting JEDEC specifications. Surface mount equivalents are available as MLL5224B in the DO-213AA MELF style package.