ROV05-391K

Varistor Voltage (Typ):	390V
Package / Case:	Disc 5mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	56pF @ 1kHz
Number of Circuits:	1
Energy:	15J
Current - Surge:	400A
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Part Status:	Obsolete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:	Bulk

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ROV 05-391K is an oil-filled variable resistor product that is part of the TVS-Varistors, MOVs selection from ROV Electronics. It is a high-voltage, current-limiting variable resistor that provides voltage and current protection, as well as overvoltage protection. Its function is primarily to prevent overvoltage due to induced lightning, nuclear radiation and other sources. It is used in many different applications, including in automotive circuits, renewable energy systems and, more generally, all regulated DC circuits.ROV 05-391K can be divided into two primary components: an internal series of field-effect thyristors (FETs) and an external series of oil-filled capacitors. The FETs are triggered and controlled by a microcontroller, and can be calibrated to voltage and current protection levels. The FETs work in conjunction with the external oil-filled capacitors to limit the applied current and stabilize the voltage. The capacitors also have the added benefit of providing ESD protection.The device is designed to protect sensitive electronic components and circuits from damage through overvoltage or overcurrent events. The device is implemented either as a component of the industrial circuit, or as a support element, incorporated externally to the circuit itself. It works by redirecting and dissipating excess current away from sensitive components and into a form of sink. When the voltage is greater than the set protection value, the FETs are activated, and the excess energy is dissipated through the external oil-filled capacitors.ROV 05-391K is capable of handling peak currents up to 1000A, with a maximum voltage rating of 1800V, and has a standard energy handling capacity of 2000 Joules. This is significantly greater than similar devices, and allows it to be used in a variety of high-voltage, high-current applications. The device is also certified according to UL 60950-1 standard.The applications of ROV 05-391K are too numerous to list, and include automotive circuits, renewable energy systems, electrical power systems, medical equipment, robotic systems, security systems, and more. It is well-suited for applications in which overvoltage protection and current-limiting resistance is required, such as the protection of sensitive electronic components and circuits from lightning and other sources of overvoltage.In conclusion, ROV 05-391K is an incredibly versatile and reliable product from ROV Electronics that coordinates with the TVS-Varistors, MOVs selection. It provides overvoltage and current-limiting protection, thanks to its internal FETs and external oil-filled capacitors. It can handle peak currents up to 1000A, with a maximum voltage rating of 1800V, and is widely used in automotive circuits, renewable energy systems, electrical power systems and more.

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