1N5526BUR-1

Overview

The Microchip Technology JAN1N5526BUR-1 is a 0.5 W glass surface mount Zener voltage regulator qualified per MIL-PRF-19500/437. It provides a nominal Zener voltage of 6.8 V with a ±5% tolerance and features an internal metallurgical bond. The device operates within a junction temperature range of -65°C to +175°C, exhibits a maximum reverse current of 1 µA at 6.2 V, and has a maximum dynamic impedance of 30 Ohms.

Feature Summary

• Hermetically sealed DO-213AA MELF package with internal metallurgical bond
• Qualified for JAN, JANTX, and JANTXV military reliability levels
• Inherently radiation hard design
• ESD nonsensitive per MIL-STD-750 Method 1020

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense electronics
• Radiation-hardened circuit protection

Procurement Notes

Verify the specific qualification level (JAN, JANTX, or JANTXV) required for your application, as this affects screening standards. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are commercial grade only. Ensure the metallurgical bond option (-1 suffix) matches system requirements. Check datasheet derating curves for thermal management on FR4 PCBs.

Selection Notes

Select based on required Zener voltage tolerance; the 'B' suffix indicates ±5%. Verify power dissipation limits against ambient temperature using derating curves. Consider the low capacitance characteristic for high-speed applications. Ensure the surface mount footprint matches the recommended pad layout in the datasheet.

Part Context

This component belongs to the 1N5518BUR-1 through 1N5546BUR-1 series of low-voltage avalanche Zener diodes. It serves as a surface mount equivalent to the JEDEC registered 1N5518 through 1N5546 axial lead series. The series covers voltages from 3.3 V to 33 V in a compact DO-213AA package.

Replacement Considerations

The 1N5526B-1 is a parameter-equivalent axial lead alternative.