V751HB34

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Varistors, MOVs and other Transient Voltage Suppressors (TVS) are commonly used across a wide range of industries to provide reliable, robust surge protection of electrical and electronic equipment. Varistors, specifically, are non-linear resistors with variable resistance levels, used to protect circuits from surges and transient voltages. The V751HB34 Varistor is one such component, offering reliable protection from transient voltage spikes and expanded general-purpose circuit protection.

The V751HB34 Varistor is a Medium Voltage Long Form component, with a DC voltage rating of 750 Volts and a peak reverse voltage rating of 1500 Volts. The device also offers an energy rating of 17.5J, with an effective clamping voltage at 10A of 1020V. The component is 10mm in diameter, with a maximum length of 24.2 mm, radial leaded and encapsulated in an epoxy coating for superior current, voltage and frequency ratings.

Working Principle

Varistors, like the V751HB34, operate on the principle of Varistor Voltage. This effect occurs when a voltage drop is produced across a non-linear device, such as a semiconductor. The voltage drop depends on the device’s junction potential and the magnitude of current flow. As the device carries an applied voltage near its breakdown voltage, the junction potential levels cause a decrease in voltage while the device is forward-biased.

This effect also can be used to control TVS resistance levels. As the voltage is increased, the device’s forward-biased junction potential causes a decrease in voltage, while increasing the current flow. The resulting increase in current flow will cause the resistance level of the TVS to decrease, thereby allowing for a more efficient transfer of energy. Consequently, varistors and TVS devices such as the V751HB34 are able to provide superior protection from transient voltage spikes, with efficient current transfer.

Application Field

The V751HB34 Varistor is a suitable TVS for applications requiring protection from over-voltage, over-current and over-temperature conditions. It finds application in automation and control systems, industrial machinery and appliances, computers and peripherals, consumer electronics and telecommunications equipment. Additionally, its superior voltage, current and frequency ratings make it suitable for use in extreme environmental conditions, such as harsh environments, cold and hot places, and high-humidity areas.

The V751HB34 Varistor can be used in high-current environments, such as in industrial environments with large AC or DC drive motors. Its small, compact size makes it also suitable for use in wireless applications, such as in wireless antennas and cell phones.

The V751HB34 Varistor is a reliable, robust, and cost effective TVS for general-purpose circuit protection across a wide range of industries. Its superior current, voltage and frequency ratings, along with its compatibility with extreme environmental conditions, make it an ideal solution for a wide variety of applications.

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