V181HG34

Varistor Voltage (Typ):	282V
Package / Case:	Square 34mm, Formed Tabs
Mounting Type:	Bolt Mount
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	6800pF @ 1MHz
Number of Circuits:	1
Energy:	330J
Current - Surge:	40kA
Varistor Voltage (Max):	310V
Series:	HG34
Varistor Voltage (Min):	254V
Maximum DC Volts:	240V
Maximum AC Volts:	180V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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V181HG34 is a form of Transient Voltage Suppression (TVS) device, also known as a voltage-dependent resistor (VDR). Specifically, it is an Metal-Oxide Varistor (MOV), which is a type of voltage-dependent variable resistor. To understand its application field and working principle, it is important to first look at the basic components of a MOV.MOVs are composed of two electrodes, which are connected to a substrate. The substrate is usually a ceramic material containing metal oxide particles, which are electrically conductive when a voltage is applied. The metal oxide particles are held together by the substrate and form a parallel plate capacitator. When a high voltage is applied across these electrodes, the particles shift and form a resistance path between the two electrodes. This resistance path prevents an electrical surge from damaging the MOV.MOVs are commonly used in various fields like power conditioners, power converters, electronic cooling systems, etc. They are widely used in electronic and electrical equipment for protection against transient voltages. V181HG34 is an MOV variant and is used in many applications within motor controls and industrial instrumentation.V181HG34 does not begin to conduct until the applied voltage exceeds a predetermined “clamping voltage.” When this occurs, a small current surges through the MOV, providing a path for the excess current to flow. This protects the circuit from damaging overvoltages. When the circuit returns to its normal operating voltage, the MOV returns to its non-conductive state.In addition to providing protection against voltage surges, V181HG34 also prevents the accumulation of heat in sensitive components. As the MOV conducts the surge current, it dissipates the energy as heat, which helps to protect the components from heat damage.V181HG34 is also designed to provide a low clamping voltage and low let-through current when protecting against overvoltages. This helps to ensure that the MOV provides effective protection without impacting the normal operation of the circuit.To conclude, V181HG34 is a form of MOV, which is used in a variety of applications for protection against transient voltages. It has a low threshold voltage and low let-through currents, which helps to protect components from overvoltages and heat damage. Additionally, V181HG34 is an efficient device that is cost-effective and easy to install.

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