1N5532BUR-1

Overview

The Microchip Technology 1N5532BUR-1 is a low voltage avalanche Zener diode with a nominal breakdown voltage of 12 V and a tolerance of ±5%. It operates in a surface mount DO-213AA (MELF) package and dissipates up to 500 mW. The device features a maximum dynamic impedance of 90 Ohms at a test current of 1 mA, a forward voltage of 1.1 V at 200 mA, and a reverse leakage current of 0.05 µA at 10.8 V. It supports an operating temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass MELF package construction
• Qualified per MIL-PRF-19500/437 for JAN, JANTX, and JANTXV levels
• Internal metallurgical bond option available
• Inherently radiation hard

Applications

• Voltage regulation over broad operating current and temperature ranges
• ESD protection applications
• Radiation-hardened electronic systems

Procurement Notes

Verify the specific military qualification level required, as the part number suffix indicates standard commercial availability while JAN/JANTX variants require specific ordering. Confirm RoHS compliance status if applicable, noting that compliant versions are typically restricted to commercial grades. Ensure the metallurgical bond requirement is specified during procurement if needed for high-reliability environments.

Selection Notes

Select this component when a hermetically sealed surface mount Zener regulator is required for harsh environments. The 12 V nominal voltage and ±5% tolerance suit precision reference needs. Consider the 500 mW power dissipation limit and thermal resistance values for PCB layout. Verify compatibility with the system's operating temperature range extending to +175°C.

Part Context

This device belongs to the 1N5518BUR-1 through 1N5546BUR-1 series of low voltage avalanche Zener diodes manufactured by Microchip Technology. The series provides a selection of voltages from 3.3 V to 33 V in a standardized DO-213AA MELF package. These components are designed for high-reliability applications requiring radiation hardness and ESD robustness.

Replacement Considerations

Public confirmed substitute part numbers: JAN1N5532CUR-1, JAN1N5532CUR-1/TR.