The massification of electronics in any aspect of our lives (domestic, commercial, industrial, administration, ...), the dramatic miniaturization of electronic components and our huge dependability on them (computers, ...) have increased our need to protect against any possible threat that may disrupt the normal operation of electronic equipment.

Electronics today are more and more vulnerable to high-frequency power disturbances such as voltage transients and noise. These problems occur in the frequency range of the microprocessor clock speed (MHz), so it is a growing power problem, which will increasingly keep on affecting electronic equipment.

Though power quality indeed has improved in the last years, high frequency power disturbances associated to lightning or load switching cannot be eliminated. Actually these are growing, since fast transistor based switching is more widely used.

Surge Protection Devices are more needed in any kind of electrical installation, in order to protect, and provide the following benefits:
1) Avoid downtimes caused by random logic failures (that require to restart electronic equipment to get it
1) back into operation).
2) Increase operative life of electronics, by providing to it always a clean and disturbance-free power supply.
3) Protect against lightning, its destructive consequences, and the costly repairs and downtimes that they
1) originate.