V18MLA0805NA

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

A TVS (transient voltage suppressor) device is an important part of the electrical protection system. The V18MLA0805NA is a particular type of unilateral TVS diode that helps provide surge protection for data and signal lines from potentially damaging transients and overvoltage events. This article will provide an overview of the V18MLA0805NA\'s application field and working principle.

The V18MLA0805NA is commonly used in consumer and low-voltage industrial electronic applications. It has a high surge capability of 18 V for data line protection, with a response time of typically 1.0µs (microsecond). Its power rating is 625mW (milliwatt) at 30°C ambient temperature. This device is ideal for protecting sensitive electronic circuitry from transients caused by ESD (electrostatic discharge), sustain inrush current, and other electrical overvoltage or overcurrent events.

V18MLA0805NA is a unilateral TVS diode with a breakdown voltage of 18 V. This means that it is only able to block voltages greater than 18 V, but not lower, which makes it ideal for protecting against sudden overvoltage events. When an overvoltage occurs, this device begins to conduct, allowing the current to flow through it and away from the protected circuitry. This is known as "clamping" the voltage, or suppressing the transient.

The fundamental working principle of the V18MLA0805NA is avalanche breakdown. This occurs when the kinetic energy from the current flow causes the internal junction of the device to become hot and accelerate electrons to a very high speed. This causes more electrons to be expelled, with each electron in turn producing more heat. This reaction continues until a large amount of current is allowed to flow, which will eventually burn out the diode and permanently damage the protected circuits.

The V18MLA0805NA is a bidirectional device, which means it can protect both lines by clamping the voltage from either direction. This means it can be used in either AC or DC applications. It features a low current leakage of 50µA (microampere) and a capacitance range between 12-30 pF (picofarads) at a 1kHz frequency.

The V18MLA0805NA is a type of MOV (metal-oxide varistor) that is designed to provide surge protection. It has a low leakage current and a high containment voltage, enabling it to offer superior protection from high energy transients and overvoltage events. As with any MOV, the V18MLA0805NA should be properly derated for temperature, reverse current, and capacitance to ensure the best protection and device reliability.

In summary, the V18MLA0805NA is an important protective device for data and signal lines in consumer and industrial electronic applications. This TVS diode is ideal for suppressing transients and overvoltage events, and its avalanche breakdown principle helps protect against damaging current surges. It has a high surge capability, a low current leakage, and a wide capacitance range.

The specific data is subject to PDF, and the above content is for reference