MMBZ5229BS-7-F

Overview

The MMBZ5229BS-7-F is a dual isolated Zener diode array manufactured by Diodes Incorporated, housed in an SOT-363 surface-mount package. It features planar die construction and provides two independent Zener channels within a single ultra-small footprint. The nominal Zener voltage is 4.3V with a tolerance range of 4.09V to 4.52V at a test current of 20mA. Maximum power dissipation is rated at 200mW, and the maximum reverse leakage current is 5.0µA at 1.0V. The device operates within a temperature range of -65°C to +150°C.

Feature Summary

• Dual isolated Zener configuration allows for independent voltage regulation or clamping functions within a compact space.
• Planar die construction ensures stable electrical characteristics and reliability under various operating conditions.
• Ultra-small SOT-363 package design facilitates automated assembly processes and high-density PCB layouts.

Applications

• Voltage reference circuits requiring dual independent rails
• Signal clamping and protection in data lines
• Over-voltage protection for sensitive input stages

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the standard tape and reel packaging containing 3000 units per reel. Confirm that the component meets RoHS compliance requirements and utilizes lead-free plating with a matte tin finish annealed over an Alloy 42 leadframe. Ensure the date code aligns with green molding compound specifications if halogen-free status is required for the application.

Selection Notes

Select this component when dual independent Zener regulation is needed in a minimal footprint. The 4.3V nominal breakdown voltage suits low-voltage logic level protection. Verify that the 200mW power dissipation rating accommodates the expected surge currents and duty cycles without exceeding thermal limits. Consider the SOT-363 pad layout dimensions for proper PCB footprint design.

Part Context

This part belongs to the MMBZ5221BS through MMBZ5259BS series, which offers a wide range of Zener voltages from 2.4V to 39V in the same SOT-363 package. The 'BS' designation indicates a dual isolated configuration, distinguishing it from single-channel variants like the MMBZ5229B. This series is designed for general-purpose surface mount applications requiring reliable voltage regulation.

Replacement Considerations

Direct substitutes include other MMBZ5229BS variants from Diodes Incorporated with different packaging options. Cross-manufacturer replacements must match the 4.3V Zener voltage, 200mW power rating, SOT-363 package outline, and dual isolated pinout configuration to ensure functional compatibility.