V33MLA1206NT

TVS - Varistors, MOVs, V33MLA1206NT application field and working principle

Transient voltage suppressors (TVS) is a device with wide range application. It is designed to protect circuits, such as those used in telecommunications systems, against overvoltage transients. Among the available TVS devices, varistors, MOVs and V33MLA1206NT are among the most popular. They have great importance for protecting circuits from transient voltage and outrush current that can damage components and sensitive circuit board assemblies.

Varistors are non-linear two-terminal devices that act like voltage-dependent resistors. They present high resistance when exposed to low voltage (<1v). However, when exposed to high voltage (2.5 – 10v) they become very conductive. This property makes them ideal for ESD protection, overvoltage protection, and surge energy absorption. Varistors are usually manufactured from materials like ceramic and zinc oxide, which consist of a granular material whose dielectric constant depends on voltage.

On the other hand, MOVs are voltage-dependent resistors that are commonly used in surge suppression systems. They act like a variable resistor, where their resistance varies with the applied voltage. When exposed to a surge voltage they become conducting and absorb the excess voltage. Their low resistance allows them to dissipate large amounts of power with low saturation voltage and a low overshoot at the surge current wavefront. MOVs are commonly used to protect sensitive components and circuit boards, especially in power supplies and telecommunications systems.

The V33MLA1206NT is TVS designed for lightning and surge protection in portable and sensitive devices, such as mobile phones, laptops, tablets, camera batteries, GPS, etc. It is a diode-based, unidirectional device with low capacitance and low leakage current. Thanks to its low leakage current (typical 10uA @8V), it is well-suited for high-speed data protection applications like USB, HDMI, and PCIe. The V33MLA1206NT features a very low turn-on voltage of 4VDC and a maximum peak pulse voltage of 33V, which is ideal for protecting components and circuits against overvoltage and transient surges.

TVS devices are used to protect circuits against voltage transients and power surges. Varistors and MOVs are two-terminal devices designed to absorb excess voltage and current, and dissipate it into the environment. They have the ability to withstand high current without any damage. The V33MLA1206NT is designed to provide reliable protection in portable and sensitive devices against overvoltage and surge transients. It features a low turn-on voltage, low leakage current, and a high peak pulse voltage, which makes it suitable for a wide range of applications.