1N4121UR-1

Single Zener Diodes Overview

The 1N4121UR-1 is a glass surface mount Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 33 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and exhibits a dynamic impedance of 200 Ohms. It is housed in the DO-213AA (SMB) surface mount package, designed for round-end voltage regulation applications.

Single Zener Diodes Feature Summary

• Glass surface mount construction for robust performance
• Round-end voltage regulator design
• Single Zener diode configuration

Single Zener Diodes Applications

• Voltage regulation circuits
• Surge protection devices
• Reference voltage sources

Single Zener Diodes Procurement Notes

Verify the specific suffix to confirm tape and reel packaging if required for automated assembly. Confirm the manufacturer origin and quality grade, as military variants such as JANS exist. Ensure the DO-213AA footprint matches the PCB design. Cross-reference datasheets for thermal derating curves relevant to the operating environment.

Single Zener Diodes Selection Notes

Select this component when a 33 V reference with low power consumption is needed in a compact surface mount form factor. The 500 mW rating suits moderate current applications. Consider the ±5% tolerance for precision requirements. Evaluate thermal management capabilities within the SMB package constraints for continuous operation.

Single Zener Diodes Part Context

This part belongs to the family of glass surface mount Zener diodes from Microchip. It serves as a voltage regulator component in electronic circuits. The DO-213AA package provides a compact solution for space-constrained designs. It is distinct from through-hole equivalents due to its surface mount orientation.

Single Zener Diodes Replacement Considerations

Check for equivalent parts with matching 33 V Zener voltage and 500 mW power rating. Verify pinout compatibility for the DO-213AA package. Ensure dynamic impedance and tolerance specifications meet circuit requirements before substitution.