LC110

A TVS diode, or transient voltage suppressor, is designed to defend against electrical transients. Transient voltage suppression (TVS) diodes help protect against voltage transients that may cause damage or performance degradation. The LC110 is a type of TVS diode, which provides protection against electrical transients.

LC110 Application Field

The LC110 from Littelfuse is a unidirectional Transient Voltage Suppressor diode designed for low capacitance and high-current operation. It is an ideal device for protection against transients due to lightning, inductive loads switching, and electrical interference for telecommunications, computer, automotive, and industrial applications. The device is also suitable for providing reliable protection in a variety of general-purpose AC/DC power supplies.

The LC110 covers an operating voltage range from 5V to 24V with a peak pulse power of 1.5kW. The device also features a fast response time of typically 5ps, low clamping voltage of 18V, and low capacitance of 1.2pF for superior surge protection performance.

LC110 Working Principle

The working principle of the LC110 is based on the use of a zinc-oxide (ZnO) Varistor to limit the peak transient voltage of up to 24 V. The ZnO material has a negative temperature coefficient, meaning that its electrical resistance is reduced as the temperature increases. This allows the device to dissipate the energy of the transient efficiently while also providing protection against overvoltage.

When a transient voltage is applied across the device, the ZnO material breaks down and starts to conduct, allowing current to flow through it. This limits the voltage across the device and helps protect the circuit from overvoltage. The current also heats the material, which reduces its electrical resistance and helps dissipate the energy of the transient. After the transient has passed, the device cools down and its electrical resistance increases, allowing it to return to its original state.

Conclusion

The LC110 from Littelfuse is a unidirectional transient voltage suppressor diode designed for low-capacitance and high-current operation. It is an ideal device for providing reliable protection against transients due to lightning, inductive loads switching, and electrical interference for telecommunications, computer, automotive, and industrial applications. The device features a fast response time, low clamping voltage, and low capacitance for superior surge protection performance.