MOV-20D151KTR Circuit Protection

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TVS diodes, also known as Transient Voltage Surge Suppressors (TVSS), are discrete electrical components used in circuit boards to protect other active components from transient overvoltage, commonly known as voltage spikes. TVS diodes, especially MOVs (Metal Oxide Varistors) are the most commonly used TVSS components in circuit board designs, and the MOV-20D151KTR is one of the most popular MOVs. In this article, we will discuss the MOV-20D151KTR\'s application field and working principle.

The MOV-20D151KTR has a wide range of applications in circuit board designs. It is widely used in portable battery powered applications, power rails, HVAC, electrical distribution systems, residential, commercial, and industrial D/C applications. Its robust construction includes 200V encapsulated MOV with internal foil and external terminations Sn/Pb soldering for ease of use. The MOV-20D151KTR features a high transient current pulse power rating at 10/1000 µs waveform, low zener standoff voltage, and low clamping voltage making it one of the most versatile MOVs available.

In terms of working principle, the MOV-20D151KTR is a type of Metal Oxide Varistor (MOV). MOVs protect active components from transient voltage spikes by providing a path for the high-energy spikes or surges to travel through without damaging the other components in the circuit. They do this by using a phenomenon known as voltage dependent resistance. An MOV consists of stacks of alternating layers of Zinc Oxide granules and very thin metallic layers. When a voltage spike exceeding the varistor\'s rated voltage occurs on the circuit, a voltage dependent resistance mechanism occurs resulting in a very steep increase in the MOV\'s resistance. This reduces the current flow through the MOV and protects the components in the circuit from damage.

The MOV-20D151KTR has an excellent reputation in the electrical engineering community for its protection features and reliability in commercial and industrial applications. It also offers several features unique to the MOV technology such as a low leakage current and a low clamping voltage. Much like other MOVs, the MOV-20D151KTR is very robust and can handle up to 150Amps of peak impulse current and a wide operating temperature range of -40°C to 85°C. Additionally, it provides excellent protections against surges, spikes, overvoltage, and electrical noise.

MOV-20D151KTR is a suitable choice for many applications due to its excellent protection features coupled with its reliable operation. Its wide range of applications, robust construction, and its low leakage and clamping voltage make it well suited for use in many power supply and HVAC applications. The principles underlying its excellent performance is based on voltage-dependent resistors and the Zinc Oxide granules and thin metallic layers contained in the device which allow the MOV to create a low-resistance path for the transient-overvoltages.

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