TND07G-390KB00AAA0

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TVS – Varistors, MOVs

The TND07G-390KB00AAA0 is a specific type of varistor, or voltage dependent resistor. Varistors are two-terminal components that are characterized by their ability to conduct current when exposed to a voltage above their rated voltage, allowing them to act as protective devices in applications.The TND07G-390KB00AAA0 is a very popular varistor due to its increased robustness and relatively low cost. The component has a rated capacity of 390 V DC at a dissipation power of 0.7 W. Its wide operating voltage range makes it a perfect choice for protection applications in home appliances, consumer electronics, lighting, automotive systems, and industrial equipments.

Application Field

The main application for the TND07G-390KB00AAA0 is EMI related ESD protection. This protection is due to the component\'s current carrying capabilities, which enable it to provide protection up to a certain level. It is also used in other surge protection applications, as it is able to absorb the excess current during a surge, preventing damage from happening to other components.

The TND07G-390KB00AAA0 can also be used as an avalanche protection diode, as it is capable of conducting current both ways. This diode is particularly useful in over-current protectors, as it can protect the other components in the circuit by limiting the current to a safe level with its response time lagging behind the surge time.

Working principle

The working principle of the TND07G-390KB00AAA0 is based on the principle of the Voltage Dependent Resistor (VDR). This type of resistor consists of two contacts, a positive and a negative. When the voltage between the two contacts is increased, the resistance of the contacts decreases, allowing a current to flow. This voltage dependent characteristic is what makes the TND07G-390KB00AAA0 ideal for surge protection devices.

The current-carrying capability of the TND07G-390KB00AAA0 ensures that it can protect against electrostatic discharge (ESD), as its resistance decreases when the voltage is increased. It also acts as an avalanche barrier, as it can conduct more current when the voltage is increased. This allows it to protect against overvoltage and over-current conditions.

Although the TND07G-390KB00AAA0 has certain limitations due to its voltage dependent characteristics, it is still very useful in many applications. It is capable of providing reliable protection against surges, ESD, and over-current conditions, and its relatively low cost makes it a very popular choice for protection applications.

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