Vishay Semiconductor Diodes Division
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MMSZ4686-HE3-18
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MMSZ4686-HE3-18

Introduction

The MMSZ4686-HE3-18 is a semiconductor product belonging to the category of Zener diodes. This entry provides an overview of its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Zener Diode
  • Use: Voltage regulation and protection in electronic circuits
  • Characteristics: Precise voltage regulation, low leakage current, small package size
  • Package: SOD-123
  • Essence: Semiconductor device for maintaining a stable voltage across a load
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Voltage - Zener (Nom) (Vz): 18V
  • Power - Max: 500mW
  • Impedance (Max) (Zzt): 40 Ohm
  • Current - Reverse Leakage @ Vr: 100nA @ 12V
  • Operating Temperature: -65°C ~ 150°C

Detailed Pin Configuration

The MMSZ4686-HE3-18 has a standard SOD-123 package with three pins: Anode, Cathode, and No Connection (NC).

Functional Features

  • Voltage Regulation: Maintains a constant output voltage despite variations in input voltage or load resistance.
  • Overvoltage Protection: Safeguards sensitive components by limiting the voltage across them.
  • Low Leakage Current: Minimizes power loss and enhances efficiency.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Small package size
  • Low leakage current

Disadvantages

  • Limited power dissipation capability
  • Susceptible to thermal runaway at high currents

Working Principles

The MMSZ4686-HE3-18 operates based on the principle of the Zener effect, where it maintains a nearly constant voltage drop across its terminals when reverse-biased at the specified voltage.

Detailed Application Field Plans

The MMSZ4686-HE3-18 finds extensive use in various applications, including: 1. Voltage regulation in power supplies 2. Overvoltage protection in electronic circuits 3. Signal clamping and limiting 4. Voltage reference in precision instruments

Detailed and Complete Alternative Models

Some alternative models to the MMSZ4686-HE3-18 include: - BZX84C18 - 1N4746A - MM3Z18VT1G - BZT52C18S

In conclusion, the MMSZ4686-HE3-18 Zener diode offers precise voltage regulation and overvoltage protection in a compact package, making it suitable for a wide range of electronic applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MMSZ4686-HE3-18 v technických řešeních

  1. What is the MMSZ4686-HE3-18?

    • The MMSZ4686-HE3-18 is a Zener diode designed for voltage regulation and protection in various technical solutions.

  2. What is the voltage rating of the MMSZ4686-HE3-18?

    • The MMSZ4686-HE3-18 has a nominal voltage of 18V, making it suitable for applications requiring precise voltage regulation.

  3. What are the typical applications of the MMSZ4686-HE3-18?

    • Typical applications include voltage clamping, voltage regulation, and transient voltage suppression in electronic circuits and systems.

  4. What is the power dissipation of the MMSZ4686-HE3-18?

    • The power dissipation of the MMSZ4686-HE3-18 is typically around 500mW, allowing it to handle moderate power levels.

  5. What is the maximum current that the MMSZ4686-HE3-18 can handle?

    • The maximum current rating for the MMSZ4686-HE3-18 is typically around 40mA, making it suitable for low-power applications.

  6. Is the MMSZ4686-HE3-18 RoHS compliant?

    • Yes, the MMSZ4686-HE3-18 is RoHS compliant, ensuring it meets environmental standards for electronics manufacturing.

  7. Can the MMSZ4686-HE3-18 be used for overvoltage protection?

    • Yes, the MMSZ4686-HE3-18 can be used to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  8. What is the temperature range for the MMSZ4686-HE3-18?

    • The MMSZ4686-HE3-18 is typically rated for operation within a temperature range of -55°C to 150°C, making it suitable for a wide range of environments.

  9. Does the MMSZ4686-HE3-18 require external components for operation?

    • The MMSZ4686-HE3-18 can be used independently for basic voltage regulation and protection, but additional circuitry may be required for specific applications.

  10. Where can I find detailed specifications and application notes for the MMSZ4686-HE3-18?

    • Detailed specifications and application notes for the MMSZ4686-HE3-18 can be found in the manufacturer's datasheet and application guides, which are available on their official website or through authorized distributors.