MMBZ5255B-E3-18

Single Zener Diodes Overview

The MMBZ5255B-E3-18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 28 V with a tolerance of ±5%. The device is designed for surface mount installation in an SOT-23-3 package. Maximum power dissipation is rated at 225 mW, and the maximum reverse leakage current is specified as 100 nA. The Zener impedance is 44 Ohms. The component operates within a temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation via a single Zener junction configured for surface mount applications.
• Utilizes a compact SOT-23-3 package suitable for space-constrained printed circuit board layouts.
• Maintains low reverse leakage current characteristics to minimize standby power consumption.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in signal lines
• Clamping applications in portable electronic devices

Single Zener Diodes Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and check for end-of-life notifications prior to procurement. Ensure packaging specifications match production requirements. Validate datasheet revisions against current design standards to avoid obsolescence risks during manufacturing.

Single Zener Diodes Selection Notes

Select this component when a 28 V regulation point is required in a small form factor. Compare thermal performance and impedance values against alternative packages if higher power handling is needed. Verify that the SOT-23-3 footprint aligns with existing PCB layout constraints and assembly capabilities.

Single Zener Diodes Part Context

This part belongs to the MMBZ52xx series of surface mount Zener diodes from Vishay. The series offers various voltage options within a standardized SOT-23-3 outline. These components are commonly used in consumer electronics and industrial control systems where reliable voltage clamping is necessary in limited board space.

Single Zener Diodes Replacement Considerations

Direct substitutes include MMBZ5255B from onsemi and MMBZ5255BLT1G from onsemi. Verify pinout compatibility and electrical parameter equivalence before substitution.