MMBZ5244BQ-7-F

Single Zener Diodes Overview

The MMBZ5244BQ-7-F is a single Zener diode manufactured by Diodes Incorporated, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 14 V with a tolerance range of 13.30 V to 14.70 V at a test current of 9.0 mA. The device supports a maximum power dissipation of 350 mW on an FR-4 PCB and operates within a temperature range of -65 °C to +150 °C. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 10 V and a maximum Zener impedance of 15 Ω at the test current.

Single Zener Diodes Feature Summary

• Utilizes planar die construction for high reliability and stable performance under varying conditions.
• Compliant with RoHS directives and fully lead-free, ensuring environmental safety and regulatory adherence.
• Designed specifically for automated assembly processes, facilitating efficient integration into modern manufacturing lines.

Single Zener Diodes Applications

• Voltage regulation in automotive electronic systems requiring specific change control protocols.
• General-purpose voltage reference circuits in consumer electronics.
• Overvoltage protection stages in signal conditioning applications.

Single Zener Diodes Procurement Notes

Verify that the component carries the Q-suffix designation if your application requires AEC-Q101 qualification, PPAP capability, or manufacture in IATF 16949 certified facilities. Confirm the ordering suffix matches the required packing quantity, as standard versions are supplied in 3,000-unit tape and reel carriers. Ensure compatibility with moisture sensitivity level 1 requirements during storage and handling.

Single Zener Diodes Selection Notes

Select this component when a precise 14 V reference is needed in a compact SOT-23 footprint. Consider the low leakage current specification for high-impedance circuits. Evaluate thermal resistance constraints if operating near the upper temperature limits, as power dissipation relies on FR-4 PCB mounting. Verify that the 350 mW rating aligns with the expected ambient temperature and board layout heat dissipation capabilities.

Single Zener Diodes Part Context

This part belongs to the MMBZ5221B through MMBZ5259B series of surface mount Zener diodes. The series offers a wide range of nominal voltages from 2.4 V to 39 V within the same physical package. The Q-suffix indicates automotive-grade qualification, distinguishing it from standard commercial variants while maintaining identical electrical pinouts and mechanical dimensions for design flexibility.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same family include MMBZ5244B-7-F (commercial grade) or MMBZ5244BWQ-7-F (alternative marking). Cross-manufacturer replacements must match the 14 V nominal voltage, SOT-23 package, and 350 mW power rating. Verify that any alternative meets the same AEC-Q101 standards if automotive reliability is required.

Single Zener Diodes FAQ

What is the maximum reverse leakage current specified for this device?

The maximum reverse leakage current is 0.1 µA, measured at a reverse voltage of 10 V.

Does the Q-suffix indicate a different electrical function than the standard version?

No, the Q-suffix denotes automotive qualification (AEC-Q101/PPAP/IATF 16949) but does not alter the electrical parameters or functionality compared to the non-Q version.

How is the power dissipation rating defined?

The 350 mW power dissipation rating is specified when the device is mounted on an FR-4 printed circuit board using the recommended pad layout.