MMBZ5242BLT1

Single Zener Diodes Overview

The MMBZ5242BLT1G is a single Zener diode from the MMBZ52xxBLT1G series, manufactured by onsemi. It provides voltage regulation with a nominal Zener voltage of 12 V and a tolerance of ±5%. The device operates in an SOT-23 surface-mount package (Case 318) with a pinout of Anode, No Connection, and Cathode. Key electrical parameters include a maximum power dissipation of 225 mW on FR-5 boards, a test current of 20 mA, a maximum Zener impedance of 30 Ohms at Izt, and a maximum reverse leakage current of 1 uA at 9.1 V. The component supports a junction temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for voltage regulation with minimal space requirements in high-density PCB layouts.
• Package optimized for automated board assembly processes.
• Provides electrostatic discharge protection rated at Class 3 (>16 kV) per the human body model.

Single Zener Diodes Applications

• Cellular phones
• Handheld portable devices
• High density PC boards

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and compliance attributes. Confirm that the requested part number matches the exact voltage rating and package style required for the design. Check for RoHS compliance status and lead-free markings as specified in the datasheet. Ensure the supplier provides valid traceability documents if automotive or industrial reliability standards are required.

Single Zener Diodes Selection Notes

Select this component when a compact surface-mount solution is needed for low-power voltage reference applications. The SOT-23 package allows for efficient use of board real estate compared to through-hole alternatives. Consider the thermal derating characteristics if operating in environments exceeding standard ambient temperatures. Verify that the 225 mW power dissipation limit aligns with the circuit's expected load conditions.

Single Zener Diodes Part Context

This device belongs to the MMBZ52xxBLT1G series of Zener voltage regulators offered by onsemi. The series covers a wide range of Zener voltages from 2.4 V to 91 V within the same physical footprint. The 'BL' designation typically indicates a specific voltage binning or marking code within the broader product family. These components are intended for general-purpose regulation tasks where size and cost efficiency are primary design constraints.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 12 V nominal voltage, SOT-23 package, and 225 mW power rating. Verify compatibility with the original manufacturer's specifications for impedance and leakage current. Cross-referencing with other manufacturers requires careful validation of pinout orientation and thermal performance under identical mounting conditions.