ROV10-391K-2 Circuit Protection

Varistor Voltage (Typ):	390V
Package / Case:	Disc 10mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	247pF @ 1kHz
Number of Circuits:	1
Energy:	60J
Current - Surge:	2.5kA
Varistor Voltage (Max):	429V
Series:	--
Varistor Voltage (Min):	351V
Maximum DC Volts:	320V
Maximum AC Volts:	250V
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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What is ROV10-391K-2?ROV10-391K-2 is an overvoltage protection module which includes a metal oxide varistor (MOV) and a spark gap. It is capable of offering comprehensive electrical and lightning transient protection for electronic systems, such as consumer electronics, solar systems, and telecommunications equipment.Classification ROV10-391K-2 falls into the family of transient voltage surge suppressors (TVS) due to its ability to offer surge and voltage transient protection for electronic systems. Specifically, it is classified as a Metal Oxide Varistor (MOV) which is a nonlinear electronic component that provides excellent surge protection in a small physical package. Application FieldROV10-391K-2 has multiple applications in the electronics industry. Its low-power applications include telecommunications and consumer electronics, while in high-power applications it is used to protect against transient voltage surges that can damage or destroy electric equipment. Specifically, it is used in solar systems and photovoltaics where its protective properties reduce the risk of fire, overloads, and short-circuits due to excessive voltages. Working Principle When an overvoltage occurs, an electrical arc is generated between the MOV’s two terminals, which generates the heat necessary to reduce the overvoltage. The MOV then creates a low resistance path which dissipates the overvoltage into the ground. This helps to protect the connected device from the damage caused by overvoltage.The MOV also acts as a temperature sensor, where the temperature is used to control a spark gap. The spark gap acts as a further layer of protection against excessively high currents that can cause harm to the system. When the temperature rises above a certain level, the spark gap will open and break the circuit, thus protecting the system from further damage.ConclusionROV10-391K-2 is an excellent tool to protect electronics systems from transient voltages and surges. By combining the metal oxide varistor and spark gap technologies, it offers effective and reliable protection from overvoltage. It has multiple applications in both low and high-power applications which makes it suitable for many electronics project.

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