1N4129UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4129UR/TR is a glass surface mount Zener voltage regulator with a nominal breakdown voltage of 62 V. It operates within the 1N4099UR through 1N4135UR series and utilizes a DO-213AA (SOD80/MLL34) MELF package. The device provides a maximum power dissipation of 0.5 W at an end cap temperature below 100°C or ambient temperature below 25°C. Electrical characteristics include a maximum Zener impedance of 500 Ohms, a test current of 250 µA, and a maximum reverse leakage current of 40 µA. The unit features a standard ±5% voltage tolerance and is supplied in tape and reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA surface mount package
• Internal metallurgical bond construction for reliability
• Minimal capacitance suitable for high-frequency applications
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation in surface mount circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the TR suffix to confirm tape and reel packaging configuration. Ensure compatibility with the DO-213AA footprint on the printed circuit board. Confirm RoHS compliance status if required by assembly specifications, as standard versions may differ from e3 variants.

Single Zener Diodes Selection Notes

Select this component when a 62 V Zener diode is required in a compact surface mount form factor. The 0.5 W power rating supports moderate current loads. Consider the 500 Ohm impedance for noise-sensitive designs. Verify thermal management requirements based on the specified derating curves for FR4 substrates.

Single Zener Diodes Part Context

This device belongs to the 1N4099UR through 1N4135UR series of 0.5 W glass Zener regulators manufactured by Microchip Technology. These components serve as surface mount equivalents to JEDEC registered axial-leaded parts. The series offers a wide voltage range from 1.8 V to 100 V with various tolerance options.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4129. Surface mount alternatives within the same series are available with different voltage ratings or tolerance suffixes such as C or D.