Vishay Semiconductor Diodes Division
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MMSZ4687-HE3-18
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MMSZ4687-HE3-18

Introduction

The MMSZ4687-HE3-18 is a semiconductor product belonging to the category of Zener diodes. This component is widely used in electronic circuits for voltage regulation and protection against overvoltage conditions. The MMSZ4687-HE3-18 possesses specific characteristics, packaging, and functional features that make it suitable for various applications in the electronics industry.

Basic Information Overview

  • Category: Zener Diode
  • Use: Voltage regulation and overvoltage protection in electronic circuits
  • Characteristics: Low leakage current, precise voltage regulation, small form factor
  • Package: SOD-123 Package
  • Essence: Semiconductor material with a specific reverse breakdown voltage
  • Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

  • Voltage Range: 2.4V to 75V
  • Power Dissipation: 500mW
  • Operating Temperature Range: -65°C to +150°C
  • Zener Voltage Tolerance: ±5%
  • Maximum Reverse Leakage Current: 5μA

Detailed Pin Configuration

The MMSZ4687-HE3-18 Zener diode has a standard SOD-123 package with two pins. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

  • Precise Voltage Regulation: The MMSZ4687-HE3-18 maintains a constant voltage across its terminals, providing stability in electronic circuits.
  • Overvoltage Protection: When the voltage exceeds the specified value, the diode conducts, diverting excess current and protecting the circuitry.

Advantages and Disadvantages

Advantages

  • Small Form Factor: The compact size of the diode allows for space-efficient circuit designs.
  • Low Leakage Current: Ensures minimal power loss in standby or off-state conditions.

Disadvantages

  • Voltage Limitation: The diode can only regulate voltages within its specified range.
  • Thermal Considerations: High operating temperatures may affect the performance of the diode.

Working Principles

The MMSZ4687-HE3-18 operates based on the principle of the Zener effect. When the voltage across its terminals reaches the specified Zener voltage, the diode enters a state of controlled breakdown, allowing current to flow in the reverse direction. This characteristic makes it suitable for voltage regulation and protection in electronic circuits.

Detailed Application Field Plans

The MMSZ4687-HE3-18 finds extensive use in various electronic applications, including: - Voltage Regulation in Power Supplies - Overvoltage Protection in Communication Systems - Signal Clipping in Audio Circuits - Voltage Reference in Instrumentation

Detailed and Complete Alternative Models

Several alternative models to the MMSZ4687-HE3-18 include: - 1N4728A - BZX55C2V4 - 1N5226B - BZT52C2V4

In conclusion, the MMSZ4687-HE3-18 Zener diode offers precise voltage regulation and overvoltage protection in a compact package, making it an essential component in modern electronic circuits.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MMSZ4687-HE3-18 v technických řešeních

  1. What is the MMSZ4687-HE3-18?

    • The MMSZ4687-HE3-18 is a Zener diode designed for voltage regulation and protection in various electronic circuits.

  2. What is the voltage rating of the MMSZ4687-HE3-18?

    • The MMSZ4687-HE3-18 has a nominal voltage of 18V, making it suitable for applications requiring voltage clamping or regulation at this level.

  3. What are the typical applications of the MMSZ4687-HE3-18?

    • Common applications include overvoltage protection, voltage regulation, and signal conditioning in electronic circuits and systems.

  4. What is the maximum power dissipation of the MMSZ4687-HE3-18?

    • The maximum power dissipation of the MMSZ4687-HE3-18 is typically around 500mW, depending on the operating conditions.

  5. Can the MMSZ4687-HE3-18 be used for reverse polarity protection?

    • Yes, the MMSZ4687-HE3-18 can be utilized for reverse polarity protection in electronic circuits to prevent damage from incorrect power connections.

  6. What is the temperature range for the MMSZ4687-HE3-18?

    • The MMSZ4687-HE3-18 is typically rated for operation within a temperature range of -65°C to 150°C, making it suitable for a wide range of environments.

  7. Is the MMSZ4687-HE3-18 RoHS compliant?

    • Yes, the MMSZ4687-HE3-18 is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring its environmental friendliness.

  8. What are the packaging options available for the MMSZ4687-HE3-18?

    • The MMSZ4687-HE3-18 is commonly available in surface mount packages such as SOD-123 or SOD-323, offering flexibility for different PCB designs.

  9. Can the MMSZ4687-HE3-18 be used in automotive applications?

    • Yes, the MMSZ4687-HE3-18 is often used in automotive electronics for voltage regulation and transient protection due to its robust characteristics.

  10. Are there any application notes or reference designs available for the MMSZ4687-HE3-18?

    • Yes, manufacturers often provide application notes and reference designs to assist engineers in implementing the MMSZ4687-HE3-18 effectively in their technical solutions.