1N5531BUR-1/TR

Overview

The 1N5531BUR-1/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation and overvoltage protection. It features an 11 V nominal Zener voltage with a ±5% tolerance. The device operates in the DO-213AA (SMA) surface-mount package and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 10 nA, a Zener impedance of 80 ohms, and a test current of 1 mA. It supports a wide operating temperature range from -65 °C to +175 °C.

Feature Summary

• Provides stable voltage regulation with high precision tolerance
• Designed for surface-mount assembly in compact electronic circuits
• Capable of operation across extended industrial temperature ranges

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive semiconductor components
• Reference voltage generation in analog signal processing

Procurement Notes

Verify the specific suffix /TR indicates tape-and-reel packaging when ordering. Confirm that the DO-213AA footprint matches your PCB design requirements. Ensure the 11V Zener voltage aligns with your circuit's regulatory needs. Check RoHS compliance status if required by your manufacturing standards. Validate the maximum operating temperature limits against your environmental conditions.

Selection Notes

Select this component when a precise 11V reference is needed in a small surface-mount form factor. Consider the low leakage current for high-impedance applications. Evaluate the thermal performance within the 500 mW dissipation limit. Compare the 80 ohm impedance against other regulators for noise sensitivity. Ensure the SMA package fits the available board space constraints.

Part Context

This part belongs to Microchip's single Zener diode family, specifically the 1N55xx series adapted for surface mount. It serves as a modern replacement for through-hole equivalents like the 1N5531A in compact designs. The DO-213AA package offers improved automation compatibility compared to axial leads while maintaining similar electrical characteristics to standard glass-passivated Zener diodes.

Replacement Considerations

The 1N5531BUR-1 is a direct surface-mount equivalent to the through-hole 1N5531A. Verify pinout compatibility if replacing axial components. Ensure the replacement maintains the same 11V nominal voltage and 500 mW power rating.