MM5Z4681T1G

Single Zener Diodes Overview

The MM5Z4681T1G is a unidirectional Zener voltage regulator diode from the MM5Z4xxxTxG series, manufactured by onsemi. It is housed in a SOD-523 surface-mount package (CASE 502) with two pins. The device provides a nominal reverse Zener voltage of 2.4 V, with a minimum of 2.28 V and a maximum of 2.52 V at a test current (IZT) of 50 µA. It features a low reverse leakage current of 2 µA at a reverse voltage (VR) of 1 V. The component has a total power dissipation rating of 500 mW on an FR-5 board at 75°C ambient temperature and operates within a junction and storage temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for space-constrained applications with a small SOD-523 surface-mount footprint optimized for automated board assembly.
• Offers wide Zener reverse voltage coverage ranging from 1.8 V to 43 V across the series.
• Features low reverse current characteristics suitable for precision regulation tasks.
• Provides high 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 that the ordering suffix matches the required tape and reel quantity, as T1G indicates 3,000 units per reel while T5G indicates 8,000 units. Confirm compliance requirements such as RoHS status and lead-free finish if applicable to your manufacturing process. Ensure the specific voltage tolerance aligns with circuit design needs, as variations exist within the series. Check for automotive qualification prefixes like SZ if AEC-Q101 standards are mandatory for the target application environment.

Single Zener Diodes Selection Notes

Select this component when a compact surface-mount solution is required for voltage regulation in portable electronics. The low test current makes it suitable for battery-powered applications where minimizing quiescent current is critical. Consider the thermal resistance and derating curves if operating in environments exceeding standard ambient temperatures. Evaluate the ESD rating against the specific exposure risks of the deployment environment to ensure adequate protection levels.

Single Zener Diodes Part Context

This device belongs to the MM5Z4xxxTxG series of Zener voltage regulators, which share common mechanical and electrical characteristics including the SOD-523 package and 500 mW power rating. The series covers a broad spectrum of voltage values, allowing designers to choose specific breakdown voltages without changing the package type. Similar parts in the lineup include MM5Z4678T1G through MM5Z4717T1G, offering nominal voltages from 1.8 V up to 43 V.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include MM5Z4680T1G (2.2 V nominal) and MM5Z4682T5G (2.7 V nominal), though voltage tolerances differ. Cross-series replacements like MMSZ4681T1G utilize the SOD-123 package, requiring layout adjustments. Verify pinout compatibility and thermal performance before substituting components from different manufacturers or package styles.

Single Zener Diodes FAQ

What is the maximum non-repetitive surge power capability of the MM5Z4681T1G?

The datasheet provides typical characteristics for peak surge power versus pulse width but does not list a single fixed maximum surge wattage value for all conditions; performance depends on pulse duration and waveform.

How is polarity indicated on the MM5Z4681T1G package?

Polarity is indicated by a cathode band on the component body. Pin 1 is the cathode and Pin 2 is the anode.

Is the MM5Z4681T1G qualified for automotive applications?

The standard MM5Z prefix is not explicitly stated as AEC-Q101 qualified in the general series description. However, the SZMM5Z prefix denotes devices that are AEC-Q101 qualified and PPAP capable for automotive and other demanding applications.