MMSZ5231B_R1_00001

Single Zener Diodes Overview

The MMSZ5231B_R1_00001 is a surface mount silicon Zener diode from the MMSZ5221B series manufactured by Panjit International Inc. It features a nominal Zener voltage of 5.1 V with a tolerance range of 4.85 V to 5.36 V. The device has a maximum power dissipation of 500 mW and operates within a junction temperature range of -55°C to +150°C. Electrical characteristics include a maximum Zener impedance of 17 Ω at a test current of 20 mA, and a maximum reverse leakage current of 5 μA at 2 V. The component utilizes a SOD-123 molded plastic case.

Single Zener Diodes Feature Summary

• Planar die construction for reliable performance
• Ideally suited for automated assembly processes
• Lead-free compliant with EU RoHS 2.0 directives

Single Zener Diodes Applications

• General purpose voltage regulation
• Clipping circuits
• Voltage reference applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details such as reel size or tape specifications. Confirm compliance requirements including RoHS status and marking codes match project needs. Ensure thermal resistance parameters align with the intended PCB mounting conditions before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 5.1 V Zener voltage is required in a compact SOD-123 package. Consider the 500 mW power rating and operating temperature limits for thermal management. Verify that the 17 Ω impedance and 5 μA leakage current meet circuit sensitivity requirements compared to alternative packages or voltage ratings.

Single Zener Diodes Part Context

This part belongs to the MMSZ5221B ~ MMSZ5267B series of surface mount silicon Zener diodes. The series covers a voltage range from 2.4 V to 75 V with consistent 500 mW power dissipation capabilities across all variants. All devices share the same SOD-123 mechanical outline and planar die construction technology.

Single Zener Diodes Replacement Considerations

Cross-reference other manufacturers' SOD-123 Zener diodes with identical 5.1 V nominal voltage and 500 mW power rating. Verify matching electrical parameters including impedance, leakage current, and thermal resistance to ensure functional compatibility without redesigning the footprint.

Single Zener Diodes FAQ

What is the marking code for the MMSZ5231B?

The marking code for the MMSZ5231B is E1.

What is the typical thermal resistance of this device?

The typical thermal resistance (RθJA) is 430 °C/W on a 100 cm² copper area and 325 °C/W on an FR4 PCB single-sided copper mini pad.