V661HA40

Varistor Voltage (Typ):	1.05kV
Package / Case:	Disc 40mm, Formed Tabs
Mounting Type:	Bolt Mount
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	2000pF @ 1MHz
Number of Circuits:	1
Energy:	900J
Current - Surge:	40kA
Varistor Voltage (Max):	1.155kV
Series:	HA
Varistor Voltage (Min):	945V
Maximum DC Volts:	850V
Maximum AC Volts:	660V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS - Varistors, MOVs

Varistors, MOVs (Metal Oxide Varistors, Metal Oxide Varistors) and TVS (Transient Voltage Suppressors) are all devices designed to protect electronic circuits from overvoltage and transient voltage events. Usually, all three device types provide very similar levels of protection, as they all can limit the amount of energy reaching a circuit. However, there are some distinct differences among them in terms of how they operate and the cost associated with them.The V661HA40 is a unique high-performance, polymeric, high-voltage, high-current metal oxide varistor. It provides a wide operating range with a very low leakage current and its high performance is attributed to its fine particle size and tightly controlled levels of ZnO (Zinc Oxide) grains. It is designed to protect sensitive electronic circuits from a wide range of transient voltage events and also offers a high level of immunity to power line transients.The V661HA40 is an excellent choice for a wide range of applications, such as overvoltage and surge protection of automotive, industrial, telecom, medical, consumer and portable electronic devices, as well as for the protection of data lines and power circuits. Its ability to offer uniform protection against high-frequency transients and its low capacitance also makes the V661HA40 well suited for protecting in-car audio and video systems.The working principle of the V661HA40 is based on its metal oxide varistor (MOV) core. When a fast overvoltage surge occurs, the MOV core quickly absorbs the energy and reduces the amplitude of the transient surge before it can damage sensitive electronic components. The MOV core utilizes a special zinc oxide material that has a non-linear voltage-current behavior, allowing it to absorb the surge energy in a quick and efficient manner.A typical MOV consists of a conductive metal plate and a thin layer of zinc oxide. When the voltage on the MOV exceeds a certain level, it will trigger a nonlinear change in its impedance, allowing it to absorb energy and protect the associated electronics. This protection is achieved by the MOV dissipating the surge energy by means of a resistive heating process, which happens rapidly and typically within a few microseconds (μs).The main advantages of the V661HA40 MOV compared to other MOV’s is its high performance and reliability, as well as its low leakage current and long service life. The V661HA40 is ideal for applications where transient voltage protection is critical and where space is at a premium. It is also a cost-effective solution that provides superior protection at an affordable price.In conclusion, the V661HA40 is an excellent choice for overvoltage protection and transient voltage protection of sensitive electronic components. Its unique design and advanced manufacturing process allow it to provide superior performance and protection at an affordable price. With its wide operating range and high peak current capability, it offers reliable protection to equipment from a wide range of transient voltage events. The V661HA40 is the ideal choice for applications such as automotive, industrial, telecom, medical, consumer, and portable electronic devices.

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