V480LA40APX2855

V480LA40APX2855 Application Field and Working Principle

V480LA40APX2855 is a voltage-dependent resistor (VDR, a.k.a. varistor) that belongs to the TVS - Varistors, MOVs family. The V480LA40APX2855 features an aluminum oxide nonlinear element for the highest voltage and current surge protection available. It is designed to protect sensitive electronic components from damaging transients in sensitive electronics.

Application Field

V480LA40APX2855 is commonly used in high voltage and current applications, including telecommunications, power supplies, computers, signal switching, consumer electronics, and automotive electronics. Its robust design can withstand ESD and EMI/RFI transients up to 28V. It is also ideal for medical equipment and instrumentation where enhanced surge protection is necessary.

Working Principle

The V480LA40APX2855’s working principle is based on the nonlinear property of an aluminum oxide capacitor, which is formed from a semiconductor-type material. When subject to a potential difference, the resulting electrical current between the two electrodes generates an additional electric field that changes the capacitance of the device. This results in a voltage-dependent capacitance that allows the V480LA40APX2855 to clamp lightning surges, ESD, and other transient voltages without any significant degradation of response time.

The V480LA40APX2855 is rapidly responsive to transient signals and quickly responds to over-voltage situations, thereby protecting sensitive components. It is also capable of withstanding a wide temperature range of -55 to 85℃ and can withstand vibration levels up to 16g.

Conclusion

In conclusion, the V480LA40APX2855 is a voltage-dependent resistor that belongs to the TVS - Varistors, MOVs family. It is commonly used in high voltage and current applications, and its robust design and rapidly response time make it ideal for sensitive electronic components that need enhanced surge protection.