1N5527BUR-1

Overview

The Microchip Technology 1N5527BUR-1 is a low voltage avalanche Zener diode rated at 0.5 W, featuring a nominal breakdown voltage of 7.5 V with a ±5% tolerance. It operates within a junction temperature range of -65°C to +175°C and utilizes a hermetically sealed DO-213AA (MELF) surface mount package. The device includes an internal metallurgical bond and meets MIL-PRF-19500/437 qualification standards for JAN, JANTX, and JANTXV reliability levels.

Feature Summary

• Hermetically sealed glass MELF package construction
• Internal metallurgical bond option
• Radiation hard design
• ESD nonsensitive per MIL-STD-750 Method 1020

Applications

• Voltage regulation over broad operating current and temperature ranges
• Military and aerospace electronic circuits requiring high reliability
• Low capacitance signal processing applications

Procurement Notes

Verify the specific suffix configuration against the datasheet nomenclature table to ensure correct tolerance and bond type. Confirm RoHS compliance status as it applies only to commercial grades. Check for availability of tape and reel options if required by automated assembly processes.

Selection Notes

Select this component when a surface mount Zener regulator requires radiation hardness and extreme temperature stability. Ensure the circuit design accommodates the 0.5 W power dissipation limit and derating curves provided in the datasheet. Verify that the DO-213AA footprint matches the PCB layout requirements.

Part Context

This part belongs to the 1N5518BUR-1 through 1N5546BUR-1 series of low voltage avalanche Zener diodes manufactured by Microchip Technology. The series provides a wide selection of voltages from 3.3 V to 33 V with various tolerance options.

Replacement Considerations

Consult the manufacturer's documentation for direct equivalents or comparable parts within the same qualification levels.