V275LT40AP Circuit Protection

Varistor Voltage (Typ):	430V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	900pF @ 1MHz
Number of Circuits:	1
Energy:	140J
Current - Surge:	6.5kA
Varistor Voltage (Max):	473V
Series:	LT
Varistor Voltage (Min):	387V
Maximum DC Volts:	369V
Maximum AC Volts:	275V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS – Varistors, MOVs

Varistors, MOVs, and TVS (transient voltage suppressors) are components that protect against power surges. High-energy transients of electrostatic or electromagnetic origin may reach dangerous levels in an electrical system and cause irreversible damage to the components. TVS components are most commonly used to protect against overvoltage, overcurrent, induction, reverse polarity, or short-circuiting. In particular, they protect electronic components from destructive surges caused by lightning or switching operations in AC mains and telecoms applications.The V275LT40AP is a 275V Metal Oxide Varistor with a clamping voltage of 400V. It is designed to provide protection against overvoltage in telecoms and mains ac applications by dissipating large instantaneous surges of energy.The V275LT40AP is a single-center safety terminal and is an ideal component for protecting sensitive equipment from high energy voltages. The varistor is rated for a maximum surge current of 5kA and has an insulation resistance of >1Gohm, making it ideal for small-signal applications where high surge current protection is needed.How does a TVS work?A TVS is designed to act as a surge arrestor so that in the event of an overvoltage surge, it will limit the amount of energy that travels any further. This helps to protect the other components in the circuit. A TVS typically consists of either a thyristor or a transient voltage suppressor (TVS) diode, which is designed to clamp the voltage at a pre-determined level and provide protection from surges and other transient voltages.When a transient voltage appears on the input of the TVS, it generates an impedance that effectively eats up the peak voltage and prevents it from reaching the sensitive load, thus avoiding the destruction of that load.When the surge voltage dissipates and the current drops, the TVS will reset itself and return to its original state.Applications of the V275LT40AP:The V275LT40AP is designed to provide protection against high energy surges in telecoms and mains ac applications. Specifically, it is ideal for use in applications such as:• Telecoms and telephone circuits• Cable and satellite TV systems• Low-voltage data line protection• Power line protectors• Industrial machinery• Battery charging systems• Automotive systemsConclusion:TVS components, like the V275LT40AP, provide essential protection for electronic circuits and components from electrostatic and electromagnetic surges. TVS components can protect against overvoltage, reverse polarity, and short-circuiting, as well as dissipate large energy instantaneously. The V275LT40AP is a 275V Metal Oxide Varistor with a clamping voltage of 400V and it is the ideal choice for telecoms and ac mains applications, providing a 5kA surge current rating and >1Gohm insulation resistance.

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