MMSZ5261B-HE3-18

Product Overview

Category

The MMSZ5261B-HE3-18 belongs to the category of Zener diodes, which are semiconductor devices designed to allow current to flow in the forward direction similar to 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 product is commonly used for voltage regulation and transient suppression in various electronic circuits. It is particularly useful in stabilizing voltage and protecting sensitive components from voltage spikes.

Characteristics

The MMSZ5261B-HE3-18 is characterized by its low impedance and sharp breakdown voltage, making it suitable for precision voltage regulation applications. It is also known for its compact size and high reliability.

Package

The MMSZ5261B-HE3-18 is typically available in a surface-mount package, making it suitable for automated assembly processes. The package is designed to provide efficient heat dissipation and mechanical protection.

Essence

The essence of this product lies in its ability to maintain a constant voltage across its terminals, ensuring stable operation of electronic circuits and protecting them from overvoltage conditions.

Packaging/Quantity

The MMSZ5261B-HE3-18 is commonly supplied in reels or tape and reel packaging, with quantities varying based on the manufacturer's specifications.

Specifications

• Voltage - Zener (Nom) (Vz): 18V
• Power - Max: 500mW
• Impedance (Max) (Zzt): 20 Ohm
• Current - Reverse Leakage @ Vr: 100nA @ 13.5V
• Operating Temperature: -65°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: SOD-123

Detailed Pin Configuration

The MMSZ5261B-HE3-18 features a standard SOD-123 package with two pins. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

The primary function of the MMSZ5261B-HE3-18 is to regulate voltage by allowing current to flow in the reverse direction when the voltage across its terminals exceeds the specified breakdown voltage. This characteristic makes it an essential component in voltage regulation circuits.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Compact size
• Low impedance
• High reliability
• Effective transient suppression

Disadvantages

• Limited power dissipation capability
• Susceptible to thermal runaway under certain conditions

Working Principles

The MMSZ5261B-HE3-18 operates based on the principle of the Zener effect, where a heavily doped semiconductor junction allows current to flow in the reverse direction once the voltage reaches the Zener voltage. This effectively maintains a constant voltage across the diode, providing stability in electronic circuits.

Detailed Application Field Plans

The MMSZ5261B-HE3-18 finds extensive use in various applications, including: - Voltage regulation in power supplies - Overvoltage protection in communication systems - Transient suppression in automotive electronics - Precision voltage references in instrumentation

Detailed and Complete Alternative Models

Some alternative models to the MMSZ5261B-HE3-18 include: - MMSZ5259B-HE3-18 - MMSZ5260B-HE3-18 - MMSZ5262B-HE3-18 - BZX84C18LT1G

In conclusion, the MMSZ5261B-HE3-18 Zener diode offers precise voltage regulation and transient suppression capabilities, making it an essential component in various electronic circuits. Its compact size and high reliability make it a preferred choice for applications requiring stable voltage references and protection against voltage spikes. However, users should be mindful of its limited power dissipation capability and potential thermal runaway issues under specific operating conditions.