Onsemi MMSZ5226BT1G Zener Diode: Key Features, Applications, and Technical Specifications

The Onsemi MMSZ5226BT1G is a popular surface-mount Zener diode designed for voltage regulation and protection in a wide range of electronic circuits. As part of the industry-standard SOD-123 package, this component is optimized for space-constrained applications while delivering reliable performance. Its primary function is to maintain a stable reference voltage by operating in the reverse-breakdown region, making it indispensable for precision power management.

Key Features

This diode offers several advantages that make it a preferred choice for designers. It provides a nominal Zener voltage (Vz) of 6.2V with a tight tolerance of ±5%, ensuring consistent and accurate regulation. The device is capable of dissipating 500 milliwatts of power at ambient temperatures, striking a balance between compact size and robust performance. Housed in a SOD-123 package, it is ideal for automated PCB assembly and high-density designs. Additionally, it features excellent surge handling capabilities, which enhances system durability against voltage transients. The diode also boasts low leakage current and sharp breakdown characteristics, contributing to efficient circuit operation.

Applications

The MMSZ5226BT1G is versatile and used across various domains. It is commonly employed as a voltage regulator in power supplies, ensuring stable DC output for sensitive ICs. In digital and analog circuits, it serves as a voltage reference for ADCs, DACs, and comparator circuits, where precision is critical. For protection purposes, it is widely used in ESD (Electrostatic Discharge) and overvoltage protection schemes, safeguarding inputs and outputs of ports like USB, HDMI, and other interfaces. It also finds use in voltage clamping applications, preventing signal lines from exceeding safe voltage levels. Automotive electronics, consumer gadgets, industrial controls, and communication systems frequently leverage this component for its reliability.

Technical Specifications

- Zener Voltage (Vz): 6.2V @ Izt = 20 mA

- Power Dissipation (Pd): 500 mW

- Tolerance: ±5%

- Package: SOD-123

- Operating Temperature Range: -65°C to +150°C

- Maximum Reverse Leakage Current: 100 nA @ 3V

- Zener Impedance (Zzt): 10 Ω @ Izt

ICGOOODFIND

The Onsemi MMSZ5226BT1G stands out as a highly efficient and compact solution for voltage regulation and circuit protection. Its combination of precise voltage control, robust power handling, and miniaturized form factor makes it an excellent choice for modern electronic designs, from consumer electronics to industrial systems.

Keywords:

Zener Diode, Voltage Regulation, ESD Protection, SOD-123 Package, Onsemi