MMSZ5230BT1G

Single Zener Diodes Overview

The MMSZ5230BT1G is a single-channel Zener voltage regulator diode manufactured by onsemi, housed in an SOD-123 surface-mount package. It features a nominal Zener voltage of 4.7 V with a ±5% tolerance and a maximum power dissipation rating of 500 mW. The device operates within a junction temperature range of -55°C to +150°C. Key electrical characteristics include a test current (IZT) of 20 mA, a maximum Zener impedance (ZZT) of 19 Ω at the test current, and a maximum reverse leakage current (IR) of 5 µA at a reverse voltage (VR) of 5 V.

Single Zener Diodes Feature Summary

• Designed for high-density applications with a small SOD-123 surface-mount footprint.
• Provides general-purpose voltage regulation suitable for medium-current circuits.
• Features robust electrostatic discharge protection rated at Class 3 (>16 kV) per the human body model.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable bias levels.
• Overvoltage protection stages in signal conditioning paths.
• Clamping applications in general-purpose electronic equipment.

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging configuration and compliance status. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm that the delivered parts match the specified MMSZ5230BT1G designation and package type before integration into production workflows.

Single Zener Diodes Selection Notes

Select this component when a 4.7 V regulation point is required in a compact surface-mount design. The 500 mW power rating supports moderate current loads compared to lower-power alternatives. Consider the 19 Ω dynamic impedance for applications sensitive to voltage fluctuations under varying load conditions. Verify thermal management requirements based on the derating curves provided in the datasheet.

Single Zener Diodes Part Context

This device belongs to the MMSZ52xxxT1G series of Zener voltage regulators offered by onsemi. The series utilizes a plastic SOD-123 case designed for automated board assembly. It serves as a leadless alternative to traditional leaded packages, facilitating space-constrained designs while maintaining reliable performance across industrial temperature ranges.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering SOD-123 packaged Zener diodes with identical 4.7 V nominal voltage and 500 mW power ratings. Verify pinout compatibility and electrical parameter tolerances before substitution. Ensure that any replacement part meets the same thermal and mechanical specifications defined for the original component.