MMSZ5228BQ-7-F

Single Zener Diodes Overview

The MMSZ5228BQ-7-F is a surface mount Zener diode manufactured by Diodes Incorporated, designed for general-purpose voltage regulation. It operates within the MMSZ5221B to MMSZ5259B series and utilizes an SOD123 package. The device provides a nominal Zener voltage of 3.9V with a tolerance range of 3.71V to 4.10V at a test current of 20mA. It features a maximum Zener impedance of 23 Ohms and a maximum reverse leakage current of 10µA at 1.0V. The component supports a power dissipation of 500mW at 75°C case temperature and 370mW at 25°C ambient temperature. It is qualified to AEC-Q101 standards and operates across a temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Qualified to AEC-Q101 automotive reliability standards
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free green device
• Ideally suited for automated assembly processes

Single Zener Diodes Applications

• Automotive electronic circuits requiring high reliability
• General purpose medium current voltage regulation
• Surface mount automated assembly processes

Single Zener Diodes Procurement Notes

Verify that the ordering suffix Q indicates automotive qualification per the manufacturer's documentation. Confirm the specific part number matches the required electrical characteristics for your design. Check the latest datasheet revision for any updates to mechanical or electrical parameters. Ensure compliance with environmental directives such as RoHS and halogen-free requirements if applicable to your project specifications.

Single Zener Diodes Selection Notes

Select this component when automotive grade reliability is required for low voltage regulation applications. The SOD123 package offers a compact footprint suitable for space-constrained designs. Consider the 3.9V nominal voltage and 5% tolerance for precise reference needs. Evaluate thermal management requirements based on the specified power derating curves and operating temperature range.

Single Zener Diodes Part Context

This part belongs to the MMSZ5221B-MMSZ5259B series of 500mW surface mount Zener diodes from Diodes Incorporated. The series covers a wide range of Zener voltages from 2.4V to 39V. The 'Q' in the part number denotes automotive qualification, distinguishing it from commercial variants. These diodes are commonly used in protection and regulation roles in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

MMSZ5228B-7-F (Commercial version)

Single Zener Diodes FAQ

What is the difference between MMSZ5228BQ-7-F and MMSZ5228B-7-F?

The MMSZ5228BQ-7-F is qualified to AEC-Q101 standards for automotive applications, while the MMSZ5228B-7-F is a commercial grade device. Both share the same electrical characteristics and packaging.

What is the maximum power dissipation at 25°C ambient temperature?

The maximum power dissipation is 370mW at an ambient temperature of 25°C when mounted on an FR-4 PCB with a 1-inch copper pad layout.