MMSZ4690-E3-18

Product Overview

Category

The MMSZ4690-E3-18 belongs to the category of Zener diodes, which are semiconductor devices designed to allow current to flow in the forward direction like a normal diode, but also in the reverse direction if the voltage is larger than the breakdown voltage known as the Zener voltage.

Use

This Zener diode is commonly used for voltage regulation and transient suppression in various electronic circuits.

Characteristics

• Voltage Regulation: The MMSZ4690-E3-18 provides stable voltage regulation, making it suitable for use in power supplies and voltage reference circuits.
• Transient Suppression: It offers effective protection against voltage spikes and transients, safeguarding sensitive components in electronic systems.
• Small Package: This diode comes in a small surface-mount package, making it suitable for compact circuit designs.
• Low Leakage Current: The device exhibits low leakage current, ensuring minimal power dissipation in standby or off-state conditions.

Package

The MMSZ4690-E3-18 is typically available in a SOD-123 surface-mount package.

Packaging/Quantity

It is commonly supplied in reels containing a specified quantity, typically ranging from hundreds to thousands of units per reel.

Specifications

• Zener Voltage: 18V
• Power Dissipation: 500mW
• Forward Voltage: 1.5V
• Reverse Leakage Current: 5μA
• Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The MMSZ4690-E3-18 Zener diode typically features a standard SOD-123 package with two pins. The pinout configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Voltage Regulation: The Zener diode maintains a constant voltage across its terminals, providing stability in various electronic circuits.
• Transient Suppression: It effectively clamps transient voltages, protecting downstream components from damage due to voltage spikes.
• Compact Design: Its small form factor makes it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages

• Effective voltage regulation
• Transient suppression capability
• Small package size for compact designs
• Low leakage current

Disadvantages

• Limited power dissipation capability compared to larger diode packages
• Higher sensitivity to temperature variations compared to some other voltage regulation methods

Working Principles

The MMSZ4690-E3-18 Zener diode operates based on the principle of the Zener effect, where it allows current to flow in the reverse-biased direction once the voltage across its terminals exceeds the Zener voltage. This behavior enables it to regulate voltage and suppress transients in electronic circuits.

Detailed Application Field Plans

The MMSZ4690-E3-18 Zener diode finds application in various fields, including: - Power Supplies: It is used for voltage regulation in linear and switching power supply circuits. - Voltage References: The diode serves as a stable voltage reference in precision measurement and instrumentation systems. - Transient Protection: It safeguards sensitive components in communication equipment, automotive electronics, and industrial control systems from voltage transients.

Detailed and Complete Alternative Models

Some alternative models to the MMSZ4690-E3-18 Zener diode include: - BZX84C18: A similar 18V Zener diode available in a SOT-23 package. - 1N4746A: A through-hole 18V Zener diode with higher power dissipation capability.

In conclusion, the MMSZ4690-E3-18 Zener diode offers reliable voltage regulation and transient suppression in a compact package, making it suitable for a wide range of electronic applications.

[Word count: 540]