V05E25P

Varistor Voltage (Typ):	39V
Package / Case:	Disc 5mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	750pF @ 1MHz
Number of Circuits:	1
Energy:	3.5J
Current - Surge:	500A
Varistor Voltage (Max):	42.9V
Series:	LV UltraMOV™
Varistor Voltage (Min):	35.1V
Maximum DC Volts:	31V
Maximum AC Volts:	25V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to TVS - Varistors, MOVs

The term TVS (transient voltage suppression) refers to a class of overvoltage protection devices used to protect vulnerable electronic circuits and components from high-voltage pulses and surge voltages. Available in both stand-alone components and in integrated circuits, TVS devices are designed to suppress, or "clamp”, transient voltages with currents higher than the rated circuit current. The components used in transient voltage suppression applications include varistors, MOVs (metal oxide varistors), and diode-based components.

V05E25P Application Field and Working Principles

The V05E25P is a medium-power transient voltage suppressor (TVS) component with an overvoltage protection rating of 5V and 25A. This type of TVS component is designed to protect sensitive electronic devices and circuits from power surges, voltage spikes, and other transient voltage events. Specifically, it can protect against DC power surges up to 25A and AC power surges up to 8A.The V05E25P is an MOV (metal oxide varistor) device, and works principally by clamping the voltage when it reaches a certain level. The device consists of a zinc oxide core with internal electrodes connected to the leads. When high-voltage or overvoltage conditions occur, the MOV device is pottery component in the circuit, allowing the current to be diverted away from sensitive components and devices. This action "clamps" the voltage to a safe level, protecting vulnerable parts from significant damage.

Comparing Different Types of TVS Components

Varistor-based TVS components are commonly used in overvoltage protection applications, due to their low cost and high reliability. Varistors are cheaper than MOVs, more efficient, and have a much higher clamping voltage rating. Varistor-based TVS devices can provide reliable protection for transient voltages up to 8kV and currents of up to 40A. In comparison, MOV-based TVS components are typically designed for use in more intense applications where high-power protection is needed. These devices typically have clamping voltages of up to 24V and currents up to 500A. MOVs are also more expensive than varistor-based TVS devices, but can also provide superior protection against power surges and other transient voltage events.

Conclusion

The V05E25P is a medium-power MOV-based TVS component designed for use in power surge and transient voltage protection applications. When high-voltage or overvoltage conditions occur, the device safely diverts the current away from sensitive components and devices, protecting them from significant damage. While more expensive than varistor-based TVS devices, MOVs typically provide superior protection in more intense power surge and voltage spike situations.

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