TMOV34S421EP

Varistor Voltage (Typ):	680V
Package / Case:	Square 34mm, Formed Tabs
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	3000pF @ 1MHz
Number of Circuits:	1
Energy:	910J
Current - Surge:	40kA
Varistor Voltage (Max):	748V
Series:	TMOV® 34S
Varistor Voltage (Min):	612V
Maximum DC Volts:	560V
Maximum AC Volts:	420V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TMOV34S421EP Application Field and Working Principle

Minimum operating voltage (MOV) surge protectors, or transient voltage suppressors (TVs), are electrical components that protect sensitive electronic equipment from voltage spikes or surges. A common type is the thyristor-based MOV (metal oxide varistor). The MOV34S421EP is one such MOV designed for use within electronic circuits.The MOV34S421EP is a type of varistor, a specific type of electric surge protector. It is designed to absorb overvoltage transient impulses, also known as transients, in order to limit damage to electrical circuits. The varistor is a diode-like device that has a nonlinear voltage-current characteristic. This characteristic allows it to absorb excess electricity due to a voltage surge, protecting the circuit from the surge and improving its reliability. The MOV34S421EP is designed to be used in a variety of electronic applications. It is primarily used in the telecom industry, in surge-protected telecommunications networks, as well as consumer applications such as AC/DC power supplies, automotive systems, and more. It also features a wide operating temperature range of -55 to +125 degrees Celsius, making it suitable for applications in extreme temperatures. Using MOV34S421EP in an electronic circuit helps reduce damage due to sudden high voltage surges. The device is designed to absorb voltage spikes within a certain range, while also providing a level of protection against overvoltage and undervoltage. The MOV34S421EP operates based on the basic principles of surge protection. This includes the ability to clamp the voltage level at a given point, limit current, and reduce voltage transients. The voltage level is usually determined by the manufacturer and is often adjustable. The MOV34S421EP is designed to operate in two modes - DC and AC. In DC mode, the voltage level is limited to a preset level, while in AC mode, the current level is limited to the preset level. In order to protect a circuit, the MOV34S421EP must be connected properly, as improper connection may result in a decrease in its performance.The MOV34S421EP is also designed with safety features such as thermal shutoff protection, which protects the device from overloading. The MOV34S421EP also features built-in electrical noise suppression, which helps to suppress any unwanted interference in the circuit.Overall, the MOV34S421EP is a useful surge protection device, designed to protect sensitive electronic components from voltage surges. It is designed to protect circuits from overvoltage, undervoltage, and voltage transients, while also providing additional safety features. The MOV34S421EP can be used in a variety of applications, including telecommunications networks, AC/DC power supplies, and automotive systems.

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