1N5528B

Overview

The Microchip Technology 1N5528B is a low voltage avalanche Zener diode with an 8.2 V nominal voltage and ±5% tolerance. It operates in the DO-35 (DO-204AH) axial-lead package, dissipating up to 0.5 W at temperatures below 50°C. The device features a maximum reverse leakage current of 0.5 µA at 6.5 V and a dynamic impedance of 40 Ω at a test current of 1 mA. It supports a wide operating temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass DO-35 package construction
• Guaranteed voltage regulation across broad operating currents
• Inherently radiation hard design
• ESD nonsensitive per MIL-STD-750 Method 1020

Applications

• Voltage regulation over broad operating ranges
• Reference voltage generation
• Protection circuits requiring radiation hardness

Procurement Notes

Verify the specific suffix requirements for military qualification levels such as JAN, JANTX, or JANTXV, which mandate metallurgical bond options and tighter tolerances. Confirm RoHS compliance status, as it applies only to commercial grades. Ensure ordering specifications match the required voltage tolerance and packaging format before procurement.

Selection Notes

Select this component when a stable 8.2 V reference is needed within a standard axial-lead footprint. Consider the 0.5 W power dissipation limit and derating curves for thermal management. Verify that the ±5% tolerance meets circuit requirements and check if radiation hardness or ESD immunity is necessary for the target environment.

Part Context

This part belongs to the 1N5518 through 1N5546 series of 0.5 watt axial-leaded glass Zener Voltage Regulators. The series provides voltages from 3.3 to 33 volts with various tolerance options. The 1N5528B specifically denotes the 8.2 V variant with the standard ±5% B suffix tolerance.

Replacement Considerations

Equivalent parts include JAN1N5528B-1/TR and CDLL5528B/TR. Substitutes must maintain the 8.2 V nominal voltage, 500 mW power rating, and DO-35 package compatibility.