1N4125UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4125UR-1/TR is a glass surface mount Zener voltage regulator with a nominal voltage of 47 V. It operates within a temperature range of -65°C to +175°C and dissipates up to 0.5 W at an end cap temperature below 100°C. The device features a DO-213AA package, a test current of 250 µA, and a maximum impedance of 250 Ohms. Reverse leakage is limited to 40 nA at 35.75 V. The TR suffix indicates tape and reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF style package
• Internal metallurgical bond option for enhanced reliability
• Inherently radiation hard construction
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation in harsh environments
• Reference voltage sources
• Protection circuits requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with the required thermal management strategy given the 0.5 W power dissipation limit. Confirm that the tape and reel format meets automated assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The internal metallurgical bond provides superior mechanical stability compared to standard epoxy packages. Consider the radiation hardness properties for aerospace or defense electronics where standard semiconductors may fail.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR through 1N4135UR series of 0.5 Watt glass surface mount Zeners. These devices serve as surface mount equivalents to JEDEC registered axial-leaded parts. The series offers a wide selection of voltages from 1.8 to 100 Volts with standard 5% tolerance options.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4125. Surface mount alternatives within the same family are available with different suffixes for tighter tolerances or bulk packaging.