MMBZ5239B-E3-18

Single Zener Diodes Overview

The MMBZ5239B-E3-18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device is designed for surface mount installation in an SOT-23-3 package, measuring 2.92 mm in length, 1.3 mm in width, and 0.93 mm in height. Maximum power dissipation is rated at 225 mW. Electrical characteristics include a maximum reverse leakage current of 3 µA and a Zener impedance of 10 Ohms. The component operates within a temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through Zener breakdown characteristics in the SOT-23-3 surface-mount package.
• Engineered for automotive applications with AEC-Q101 qualification ensuring reliability under varying thermal conditions.
• Offers low reverse leakage current to minimize power loss in high-impedance circuits.

Single Zener Diodes Applications

• Automotive electronic circuit protection
• Voltage reference generation in compact PCB designs
• Clamping applications in signal processing lines

Single Zener Diodes Procurement Notes

Verify component authenticity and datasheet revisions prior to integration. Confirm that the specific suffix corresponds to the required automotive grade and packaging format. Check for end-of-life status or obsolescence notices from the manufacturer to ensure long-term supply chain stability for production runs.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V reference is required in space-constrained automotive environments. The SOT-23-3 footprint allows for dense board layouts compared to larger packages. Ensure the 225 mW power rating aligns with the expected operating current and thermal management capabilities of the target application design.

Single Zener Diodes Part Context

This part belongs to the MMBZ52xx series of small-signal Zener diodes produced by Vishay. The series is characterized by its compact SOT-23 form factor and suitability for automated surface-mount assembly processes. It serves as a specialized variant within the broader diode portfolio, focusing on automotive-grade performance metrics.

Single Zener Diodes Replacement Considerations

• MMBZ5239B_NL

Single Zener Diodes FAQ

Is the MMBZ5239B-E3-18 qualified for automotive use?

Yes, the component holds AEC-Q101 qualification, indicating it meets the stress test requirements for automotive electronic components.

What is the maximum operating junction temperature?

The maximum operating temperature is specified as +150°C.