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MMSZ5251BT1G from ON,ON Semiconductor

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MMSZ5251BT1G

Manufacturer: ON, ON/LRC

Zener Voltage Regulators 500 mW SOD−123 Surface Mount

Partnumber Manufacturer Quantity Availability
MMSZ5251BT1G ON, ON/LRC 147000 In Stock

Description and Introduction

Zener Voltage Regulators 500 mW SOD−123 Surface Mount The **MMSZ5251BT1G** is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. As part of the MMSZ series, this component offers precise voltage clamping with a nominal Zener voltage of **5.1V**, making it suitable for applications requiring stable reference voltages or transient suppression.  

Constructed in a compact **SOD-123** package, the MMSZ5251BT1G provides efficient power dissipation while occupying minimal board space. Its low leakage current and sharp breakdown characteristics ensure reliable performance in voltage stabilization tasks. With a power dissipation rating of **500mW**, it is well-suited for low-power circuits, including consumer electronics, power supplies, and signal conditioning modules.  

Key features of the MMSZ5251BT1G include a tight voltage tolerance (±5%) and fast response to voltage spikes, enhancing circuit protection against overvoltage events. The diode’s robust construction ensures durability in various operating conditions, making it a dependable choice for designers seeking consistent performance.  

Common applications include voltage clamping in communication interfaces, microcontroller I/O protection, and voltage reference circuits. Its compatibility with automated assembly processes further simplifies integration into modern PCB designs.  

Engineers and hobbyists alike value the MMSZ5251BT1G for its balance of precision, efficiency, and compact form factor, reinforcing its role as a fundamental component in electronic design.

Application Scenarios & Design Considerations

Zener Voltage Regulators 500 mW SOD−123 Surface Mount

Alternative Part Number

  • BZT52C22 --: 22V zener in SOD-123 with similar power rating and tolerance, a common cross for MMSZ5251B.
  • 1N4748A --: 22V 1W zener diode in DO-41, widely available and electrically compatible for most 22V regulation needs.
  • MMSZ5251B --: Same 22V zener specification in SOD-123 from an alternate manufacturer, direct functional equivalent.
  • CZRF22VB --: 22V zener diode in SOD-123F with comparable zener characteristics, suitable as a surface-mount substitute.

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