1N4124UR-1

Single Zener Diodes Overview

The 1N4124UR-1 is a Zener voltage regulator manufactured by Microchip Technology. It utilizes a glass surface mount DO-213AA package and operates within a temperature range of -65°C to +175°C. The device provides a nominal Zener voltage of 20V with a standard tolerance of ±5%. It features a maximum power dissipation of 500 mW and a maximum Zener impedance of 200 ohms. The component exhibits a maximum reverse leakage current of 5 nA at 15.2 V and a forward voltage drop of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Constructed with an internal metallurgical bond for enhanced reliability in high-performance applications.
• Designed as a round-end voltage regulator suitable for surface mount assembly processes.
• Qualified per MIL-PRF-19500/435 standards, supporting JAN, JANTX, JANTXV, and JANS levels.

Single Zener Diodes Applications

• Voltage regulation in military-grade electronic systems.
• High-reliability circuit protection requiring stable reference voltages.
• Avionics and aerospace equipment operating under extreme thermal conditions.

Single Zener Diodes Procurement Notes

Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as these designations affect performance specifications and compliance. Confirm that the DO-213AA package dimensions align with your PCB footprint requirements. Ensure the supplier provides documentation confirming the internal metallurgical bond construction, which is critical for the intended high-reliability use cases.

Single Zener Diodes Selection Notes

Select this component when a 20V Zener reference is needed in a compact surface mount form factor. The DO-213AA package offers a smaller footprint compared to traditional axial leads while maintaining robust thermal characteristics. Consider the ±5% tolerance and 500 mW power rating to ensure compatibility with your circuit's voltage stability and heat dissipation needs.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR-1 through 1N4135UR-1 series of 0.5-watt glass surface mount Zener diodes. These devices are designed to replace older axial-leaded counterparts in modern surface mount designs. The series maintains the electrical characteristics of the original JEDEC registered parts while adapting them for automated assembly and space-constrained environments.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts from the 1N4099UR-1 through 1N4135UR-1 series if voltage ratings differ. For non-metallurgical versions, the 1N4124UR (without the -1 suffix) may be considered, though it lacks the specific MIL-qualified metallurgical bond. Verify package compatibility when substituting with generic DO-213AA components.