V25S750PX1347 Circuit Protection

Varistor Voltage (Typ):	1.2kV
Package / Case:	Radial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	550pF @ 1MHz
Number of Circuits:	1
Energy:	890J
Current - Surge:	22kA
Varistor Voltage (Max):	1.32kV
Series:	UltraMOV™
Varistor Voltage (Min):	1.08kV
Maximum DC Volts:	970V
Maximum AC Volts:	750V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS – Varistors, MOVs

Transient Voltage Suppressors (TVS) are a type of electrical component used to protect vulnerable circuits from high voltages. This type of protection is commonly referred to as “Surge Protection.” Varistors and Metal Oxide Varistors (MOVs) are examples of TVSs used to protect against transient voltage surges. The V25S750PX1347 is an example of a specific TVS. Understanding the V25S750PX1347’s application fields and working principle is essential to ensure that it is used correctly.The V25S750PX1347 is an unidirectional TVS specifically designed for Transient Voltage Surge Suppression (TVSS) applications. It is intended for use in power supplies, motor control systems, and other systems that require overvoltage protection. It is rated for voltages up to 7.5V and has an operating temperature range of -55°C to 125°C. It is an axial-leaded, low-power electronic component measuring 2.5 x 7.5mm. Manufactured by Stackpole, the V25S750PX1347 adheres to European RoHS standards.The operating principle of the V25S750PX1347 is based on the electrical behavior of a Varistor, or Voltage-dependent Resistor (VDR). A Varistor is an electrical component consisting of two electrodes separated by an insulating material. When subjected to a voltage greater than its rated value, the Varistor provides a low resistance path for current, thus limiting the voltage of the system. The V25S750PX1347’s Varistor is designed to have an impedance of ≤ 0.7 Ω at 7 volts, thus allowing the current to pass through the component, yet minimizing the voltage surge in the system.The V25S750PX1347’s Varistor effectively combines the properties of a resistance and a capacitor. The device acts as a resistance to low voltages and a capacitor to high voltages. Therefore, when an overvoltage is applied, the V25S750PX1347 provides protection to the system by functioning as a capacitor, allowing the voltage to drop across the device. This allows the system to return to a safe voltage without experiencing permanent damage.When installing the V25S750PX1347, it is important to ensure that the leads are correctly connected. In order for the component to function properly, the leads must be connected to the ground plane. It is also important to avoid placing components too close together in order to avoid capacity coupling. Capacity coupling occurs when the electric field produced by adjacent components leads to interference.The V25S750PX1347 is designed for use in applications that require Transient Voltage Surge Suppression (TVSS). It is an unidirectional TVS providing overvoltage protection in power supplies and other related systems. Operating on the principle of a Varistor, the component acts as a resistance to low voltages and a capacitor to high voltages, allowing the voltage drop across the device to prevent system damage. Proper installation and maintenance of the V25S750PX1347 is essential for it to function correctly, as capacity coupling must be avoided.

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