In all kinds of electronic products, the trend of setting overcurrent protection and overvoltage protection components is increasing, the reason why, it can be summarized mainly in the following aspects:
(1) With the needs of the development of electronic products, the function (integration) of IC is also becoming stronger and stronger, and its "value" is naturally more and more noble, so it needs to strengthen protection.
(2) In order to reduce power consumption, reduce heat, extend the service life, the working voltage of semiconductor components and ics is getting lower and lower, according to the SIA (Semiconductor Industry Association) statistics, the current working voltage is about 1.5V, to 2004 will be reduced to 1.2V below, so its ability to resist overcurrent/overvoltage needs to adapt to the new protection requirements.
(3) More and more mobile electronic products, such as handheld phones, PDAs, laptops, camcorders, digital cameras, optical disc players, etc., these electronic products need battery components as battery components and battery chargers must be equipped with protective components.
(4) In modern luxury cars, more and more electronic equipment is equipped, and the working conditions are worse than ordinary electronic products, such as the rapidly changing car driving conditions and environment, and the car will produce a large instantaneous peak voltage when starting. Therefore, in the power adapter for these electronic devices, it is generally necessary to install both overcurrent and overvoltage protection elements.
(5) Many power/electronic products need to prevent lightning strikes and the cross between the power line and the telephone line to ensure normal communication and the user's personal safety. Therefore, with the development of power/electronic products, the demand for overcurrent/overvoltage protection components is on the rise.
(6) According to statistics, 75% of the failures in electronic products are caused by overcurrent/overvoltage. IBM has analyzed the causes of computer power failure, of which 88.5% is due to overcurrent/overvoltage caused. With the demanding quality of electronic products, manufacturers must use a large number of circuit protection components in order to improve market competitiveness