V48MLA1210A

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TVS - Varistors, MOVs: V48MLA1210A Application Field and Working Principle

A transient voltage suppressor, also known as a Transient Voltage Suppressor (TVS), is a key component in the design of electrical and electronic systems used to protect against high voltage and/or high-energy transients. This device was first used in the early 70s when the popularity of integrated circuit (IC) technology was expanding and there was an increased need for protection from high-frequency disturbances. TVSs vary in size, operation, and application field, and the most popular type is the Metal Oxide Varistor (MOV). Other popular types include bidirectional TVS, TVS diodes, and Zener diodes.

One of the most well-known MOVs is the V48MLA1210A, a 1200V/50A MOV. It has an electroplated metal oxide film electrode, plus an aluminum clad construction for improved thermal applications. The devices are lead-free and are made in accordance with the RoHS guidelines. It is suitable for medium voltage suppression and is often used in PCs, LCDs, FPGAs, automotive electronics, LED lighting, and telecom applications.

When voltage and current exceed a certain limit on the MOV, the MOV begins to conduct current. This is the principle behind a MOV\'s protection against surges or spikes-it allows the current to bypass the circuit to protect it from damage. The V48MLA1210A has a peak pulse power handling capacity of 8.8 kV. It can also protect the connected components from voltages up to 1200V, with an operational temperature range up to 150°C. It features low leakage current and low capacitance.

The V48MLA1210A is designed to be installed into an indoor environment. It features bolt-on mounting and a snap-in feature for quick installation. The device is available with an optional cover for added protection when in use, and the unit is suitable for vertical, horizontal, or panel mounted configurations. For surge protection applications, the MOV can be mounted directly onto PCBs and other mounting surfaces. Additionally, the device is suitable for a wide variety of applications, including meeting IEC 62305 Class IV/ Class C protection requirements.

A MOV works by spotting changes in the voltage before they become a hazard to the circuit. When a surge is detected, the MOV rapidly conducts current and acts as a buffer protecting the circuit. This allows the surge to be diverted before it can damage the circuit. This mechanism is known as "clamping" and is one of the primary functions of TVSs and MOVs.

The V48MLA1210A is designed for medium voltage transient voltage suppression, providing effective protection from overvoltage transients. The device is UL, CSA, and VDE-recognized, making it suitable for use in a wide array of applications. Its durable, reliable construction and robust design make it ideal for use in any indoor environment. It is perfect for those who need reliable surge protection without sacrificing performance, and it gives users peace of mind knowing their equipment is safe from electrical damage.

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