V300LT4P Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS - Varistors, MOVs - V300LT4P Application Field and Working Principle

Varistors, also referred to as voltage–dependent resistance (VDR) devices, are used in a variety of applications. They are commonly utilized for voltage transient protection of integrated circuits, personal computers, telecommunications, automotive applications, and in industrial power supplies. When used in an over-voltage protection circuit, they present an effectively infinite resistance until a specified voltage is exceeded, at which point they behave as a low-value resistor (typically between 1 and 10 ohms). This process is known as Varistor clamping.

MOVs are special components used in switching power supplies, UPS systems, circuit protection, motor speed control, and other power conditioning equipment. During operation, MOVs provide a short duration impulse of easily dissipated current when there is an abnormal voltage increase across its terminals, acting as an energy absorption device. This protects sensitive components or devices from damage caused by an excessive potential difference.

V300LT4P is a compactly designed, surface-mount voltage-dependent resistors (VDRs) with a capacitance range of 275pF to 25,000pF and a rated surge voltage of 275VAC. The unique design of V300LT4P provides superior protection for sensitive electronic circuitry against transients and electrostatic discharges. It is designed for polarity sensitivity and contact resistance variances, and constructed from small, high-energy particles. V300LT4P is ideal for use in applications where noise suppression is required, including home appliances, LED lighting, power supplies,and digital products.

Working Principle of V300LT4P

When a voltage transient occurs, V300LT4P’s body dissipates energy into an internal air gap, making it more resistant to damage caused by over-voltage conditions. When V300LT4P reaches the surge voltage threshold, it exhibits a very quick rise in voltage, limiting the maximum transient peak voltage on the protected line. It provides fast response for pulse and steady state transients.

The V300LT4P has an internal structure of electrons that is constructed out of small, high-energy particles. Upon receiving a voltage transient, an electrical potential is generated in the MOV element, causing the electrons to move quickly and generate heat. This heat is further dissipated into the air gap, limiting the maximum voltage applied on the protected line.

In summary, V300LT4P provides superior protection for sensitive electronic circuitry against transients and electrostatic discharges. It is ideal for use in applications where noise suppression is required, such as LED lighting, power supplies, home appliances, and digital products. Its internal structure of electrons constructed of small, high-energy particles rapidly dissipates energy and limits the maximum voltage on the protected line.

The specific data is subject to PDF, and the above content is for reference