1N5529BUR-1

Overview

The Microchip Technology 1N5529BUR-1 is a low voltage avalanche Zener diode with a nominal breakdown voltage of 9.1 V at a test current of 1.0 mA. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device features a hermetically sealed DO-213AA MELF glass surface mount package. Electrical characteristics include a maximum reverse current of 0.1 µA, a maximum dynamic impedance of 0.1 Ω, and a maximum noise density of 0.01 µV/√Hz.

Feature Summary

• Hermetically sealed glass MELF package construction
• Internal metallurgical bond for enhanced reliability
• Qualified per MIL-PRF-19500/437 standards
• Inherently radiation hard design

Applications

• Voltage regulation in harsh environments
• Reference voltage sources
• Radiation-hardened electronic circuits

Procurement Notes

Verify the specific revision level and qualification grade (JAN, JANTX, or JANTXV) required for your application against the datasheet specifications. Confirm that the ordering suffix matches the desired tolerance and metallurgical bond configuration. Ensure compatibility with the recommended FR4 PC board footprint for proper thermal management and soldering.

Selection Notes

Select this component when a hermetically sealed surface mount Zener diode with high reliability is required. The B suffix indicates a 5% voltage tolerance. Consider the operating temperature range and power derating curves to ensure the device remains within safe operating limits under your specific load conditions.

Part Context

This part belongs to the 1N5518BUR-1 through 1N5546BUR-1 series of low voltage avalanche Zener diodes. These devices are designed for applications requiring robust performance in extreme temperatures and radiation environments. The series offers various voltage options from 3.3 V to 33 V in a compact MELF package.

Replacement Considerations

Direct replacements must match the JEDEC type number, package style, and qualification level. Verify equivalent parts from other manufacturers meet the MIL-PRF-19500/437 standard if military qualification is required.

FAQ

What does the 'B' suffix indicate in the part number?

The 'B' suffix denotes a Zener voltage tolerance of plus or minus 5.0%.

Is the 1N5529BUR-1 RoHS compliant?

RoHS compliant versions are available on commercial grades only, indicated by the '(e3)' suffix. Standard military qualified versions may not be RoHS compliant.