MMBZ5239C-E3-18

Single Zener Diodes Overview

The MMBZ5239C-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 tight tolerance of ±2%. The component is rated for a maximum power dissipation of 500 mW and operates within a temperature range of -55°C to +150°C. It utilizes the SOT-23-3 surface-mount package, offering a compact form factor suitable for space-constrained designs. The device exhibits a maximum Zener impedance of 10 Ohms and a reverse leakage current of 3 µA at 7 V.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the 9.1 V Zener voltage.
• Utilizes a compact SOT-23-3 surface-mount package for efficient board space utilization.
• Ensures reliable operation across an extended industrial temperature range from -55°C to +150°C.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable low-voltage sources
• Overvoltage protection in portable electronic devices
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix E3-18 to confirm RoHS compliance and reel packaging configuration. Ensure compatibility with SOT-23-3 footprints during PCB layout. Cross-reference datasheet parameters such as Zener impedance and leakage current against circuit requirements to guarantee performance under expected operating conditions.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V regulation point is required with high precision. The SOT-23-3 package is preferred over larger SOD-123 variants for dense layouts. Consider the 500 mW power rating relative to ambient thermal conditions. Verify that the ±2% tolerance meets stricter circuit specifications compared to standard ±5% alternatives.

Single Zener Diodes Part Context

This part belongs to the MMBZ5239 series of dual or single Zener diodes offered by Vishay. The MMBZ designation typically indicates a dual configuration in some contexts, but datasheets for this specific part number identify it as a single Zener diode in an SOT-23-3 package. It serves as a precision voltage reference solution within Vishay's general-purpose diode portfolio.

Single Zener Diodes Replacement Considerations

MMSZ5239C-E3-18 is a parameter-equivalent alternative available from the same manufacturer. Other manufacturers may offer similar 9.1 V Zener diodes in SOT-23 packages, but pinout and electrical characteristics must be verified before substitution.