MMSZ5257B-E3-18

Single Zener Diodes Overview

The MMSZ5257B-E3-18 is a silicon planar Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 33 V with a standard tolerance of ±5%. The device operates within a test current range of 1.7 to 20 mA and features a maximum power dissipation of 500 mW at thermal equilibrium. It utilizes an SOD-123 surface-mount package, supports an operating temperature range from -55 °C to +150 °C, and complies with RoHS standards.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Provides standard ±5% Zener voltage tolerance
• Supports high-temperature operation up to +150 °C

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific suffix 'E3-18' to confirm the commercial grade, RoHS-compliant status, and 10,000-unit reel packaging configuration. Ensure the required tolerance aligns with the 'B' designation for ±5% accuracy rather than the tighter 'C' variant. Confirm that the SOD-123 footprint matches the target PCB design constraints.

Single Zener Diodes Selection Notes

Select this component when a 33 V Zener voltage with ±5% tolerance is required in a compact SMD form factor. Consider the 500 mW power dissipation limit and the dynamic resistance characteristics at the specified test current. Evaluate the thermal management requirements given the junction-to-ambient thermal resistance specifications for the SOD-123 package.

Single Zener Diodes Part Context

This part belongs to the MMSZ5225 to MMSZ5267 series of small signal Zener diodes. The series covers a wide Zener voltage range from 3.0 V to 75 V. The 'B' suffix indicates the standard ±5% tolerance version, while the '-E3-18' suffix denotes RoHS compliance and tape-and-reel packaging on a 13-inch reel.

Single Zener Diodes Replacement Considerations

MMSZ33T1G (onsemi)

Single Zener Diodes FAQ

What is the Zener voltage tolerance for the MMSZ5257B-E3-18?

The 'B' suffix indicates a standard Zener voltage tolerance of ±5%.

What is the maximum power dissipation rating?

The maximum power dissipation is 500 mW under thermal equilibrium conditions.