1N5531/TR

Overview

The Microchip Technology 1N5531/TR is a silicon oxide passivated Zener regulator diode housed in the DO-204AH (DO-35) axial through-hole package. It provides a nominal Zener voltage of 11 V with a maximum power dissipation of 500 mW. The device features a reverse leakage current of 1 nA at 9.9 V and a Zener impedance of 80 Ohms. It operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Utilizes silicon oxide passivation for enhanced reliability
• Hermetically sealed glass axial package construction
• Designed for precision voltage regulation applications

Applications

• Voltage reference circuits
• Overvoltage protection systems
• Precision voltage regulators

Procurement Notes

Verify that the specific suffix /TR indicates tape and reel packaging rather than bulk, as this affects handling procedures. Confirm RoHS compliance status directly with the manufacturer, as military-grade variants often differ from commercial standards. Ensure the ordering quantity aligns with the specified reel size to avoid partial reel issues.

Selection Notes

Select this component when an 11 V reference is required in a standard axial leaded format. Compare the 80 Ohm impedance against circuit sensitivity requirements. Verify that the 500 mW power rating accommodates the expected thermal environment without exceeding the maximum junction temperature limits under continuous operation.

Part Context

This part belongs to the 1N5531 series of Zener diodes manufactured by Microchip Technology. It serves as a hermetically sealed alternative to non-military equivalents, ensuring stability in harsh environments. The /TR suffix denotes a specific packaging configuration distinct from the standard bulk or single-unit variations found in the same series.

Replacement Considerations

JAN1N5531C-1

FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is +175°C.

What is the Zener impedance value?

The Zener impedance is 80 Ohms.