V390ZU05PX2855

Varistor Voltage (Typ):	390V
Package / Case:	Disc 5mm
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 125°C (TA)
Capacitance @ Frequency:	80pF @ 1MHz
Number of Circuits:	1
Energy:	10J
Current - Surge:	400A
Varistor Voltage (Max):	429V
Series:	ZU
Varistor Voltage (Min):	351V
Maximum DC Volts:	330V
Maximum AC Volts:	250V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS - Varistors, MOVs: V390ZU05PX2855 Application Field and Working Principle

The V390ZU05PX2855 is a type of varistor or Metal-Oxide varistor, more commonly referred to as MOV. MOVs are an important type of surge protective device (SPD) used to keep electrical systems safe and reliable. They can be used to protect control circuits, communication networks, industrial machinery, and home appliances from harmful voltage surges or transients due to internal or external sources. This article will discuss the application field and working principle of the V390ZU05PX2855 varistor.The V390ZU05PX2855 is designed to protect circuits from overvoltage transients and short-duration voltage surges. It is ideal for use in installations where it is difficult to locate external protection devices, such as in high- density electrical cabinet solutions or sophisticated switchgear systems. The V390ZU05PX2855 has a voltage rating of 5V and a breakdown voltage of 28.55V. It is able to dissipate up to 5J of energy per pulse from short-duration surges with a maximum discharge current of 8.3ka. In terms of application field, the V390ZU05PX2855 is most commonly used in automotive, telecom, and consumer electronics applications, where it is used to protect circuits from transients or voltage surges. It is also suitable for use in high power grids and electric railways, particularly in areas where lightning is common, as it helps to efficiently regulate transient currents caused by multiple lightning strikes. The MOV also has applications in LED weatherproof lighting systems, where it is used to prevent damage from overvoltage transients.The V390ZU05PX2855 varistor works on a simple principle. When its breakdown voltage is exceeded by an impulse of voltage or current, the MOV is forced to conduct, causing it to absorb the excess energy and protect the circuit. MOVs are designed to fail-safe, meaning that if the voltage ever exceeds the specified breakdown voltage, the MOV will short-circuit and be effectively removed from the circuit. This prevents any further damage to the circuit by the overvoltage transient.MOVs are designed to provide reliable and efficient circuit protection, and the V390ZU05PX2855 is no exception. With its high voltage rating and low breakdown voltage, it is able to provide up to 8.3kA of short-duration protection from voltage surges. This makes it an ideal choice for protecting sensitive circuits, appliances, and equipment against overvoltage transients.In conclusion, the V390ZU05PX2855 is an ideal choice for providing surge protection in automotive, telecom, consumer electronics, and LED weatherproof lighting applications. Its low breakdown voltage and high current rating make it well-suited for protecting from harmful voltage transients. The working principle of the MOV is based on a simple concept - when its breakdown voltage is exceeded, it absorbs the energy of the transient and prevents any further harm from being done to the circuit.

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