MMBZ5259B-E3-08

Single Zener Diodes Overview

The MMBZ5259B-E3-08 is a single silicon Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The device is designed for surface mount installation in a TO-236AB (SOT-23) package, offering a maximum power dissipation of 225 mW. Key electrical characteristics include a maximum dynamic impedance of 80 Ω and a maximum reverse leakage current of 100 nA. The component operates within a temperature range of -55 °C to +150 °C and complies with RoHS standards.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 39 V Zener potential
• Utilizes a compact SOT-23 surface-mount package for automated assembly
• Constructed from silicon material for reliable unidirectional operation
• Rated for high-temperature environments up to 150 °C

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 39 V levels
• Over-voltage protection stages in low-power electronics
• Clamping applications in signal conditioning paths
• Biasing networks in transistor amplifier stages

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation and package code against official datasheets before procurement. Confirm that the E3 suffix indicates lead-free compliance and halogen-free status as per current Vishay specifications. Ensure the ordering part number matches the required tape-and-reel packaging format. Cross-reference the component revision history to confirm availability and any potential obsolescence notices associated with this specific Vishay product line.

Single Zener Diodes Selection Notes

Select this component when a 39 V regulation point is required in space-constrained designs utilizing SOT-23 footprints. Consider the 225 mW power rating to ensure adequate thermal headroom for the intended application current. Evaluate the 80 Ω dynamic impedance for noise sensitivity requirements in precision analog circuits. Compare the 100 nA leakage specification against low-power standby mode constraints to verify suitability for energy-efficient systems.

Single Zener Diodes Part Context

This device belongs to the MMBZ52xx series of small-signal Zener diodes produced by Vishay. The series is characterized by its use in general-purpose voltage regulation and protection roles within consumer and industrial electronics. The MMBZ5259B variant specifically targets the 39 V segment of the standard Zener voltage lineup, providing a standardized solution for designers needing this specific potential in a miniature form factor.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data.