TMOV14R300M

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Transient Voltage Suppressors (TVSs) are used for protection of semiconductor devices, such as integrated circuits, from transients and surges caused by electrostatic discharge, contact discharge, lightning and inductive switching. TVSs are usually divided into two categories, Varistors and Metal Oxide Varistors (MOVs).The TMOV14R300M is a MOV of the TMOV series manufactured by Littelfuse. These MOVs are designed to protect electronic and electrical equipment in AC line connected applications from overvoltage transients. This type is designed to replace conventional MOVs in most applications.

The TMV14R300M is a radial leaded, single-phase overvoltage protector designed to fit standard subminiature packages. It has a standard operating voltage of 300 V, and it has a peak operating voltage of 330 V. The burst or clamping voltage of this unit is 340 V, and it has a low capacitance rating of 45 pF. Its maximum operating temperature is 85°C, and its rated current is 12 A. The TMOV14R300M is designed for a wide range of AC applications, including AC battery power circuits, AC phones, AC computers, AC scientific instruments, AC motor controllers, AC coolers and air conditioners, and AC industrial control circuits.Its general applications include industrial equipment, home appliances, computers, audio/video equipment, telecoms systems, automotive, and medical devices.

The main working principle of the TMOV14R300M is to protect the connected device from overvoltage transients. When the unit is subjected to a transient surge or spike, the MOVs act as a voltage-dependent resistor, diverting the current away from the protected circuit and clamping the voltage. The MOVs have a very low dynamic resistance, allowing them to absorb a large amount of energy and to reduce the voltages very quickly. When the transient event is gone, the MOV returns to its normal low resistance state, and the protected circuit is restored.

The TMOV14R300M has an internal zinc-oxide semiconductor element that is designed to absorb most of the voltage and current during an overvoltage condition. The MOV also has an external protective shield which offers protection from electrostatic and other forces that can cause damage to the MOV. The MOV is also designed to dissipate heat quickly, so it is less likely to be damaged by overcurrent or overheating.

In conclusion, the TMOV14R300M is a reliable overvoltage protector with a wide range of applications, including industrial equipment, home appliances, computers, audio/video equipment, telecoms systems, automotive, and medical devices. It is designed to protect the connected device from overvoltage transients by acting as a voltage-dependent resistor and diverting most of the current away from the protected circuit. The unit is designed with a zinc-oxide semiconductor element, an external protective shield, and a low dynamic resistance, and it has a maximum operating temperature of 85°C and a rated current of 12 A.

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