Application Explanation of Self Recovery Chip Fuses in Microcontrollers.7.5 amp mini blade fuse

　　PTC self recovery patch fuse is used for overcurrent protection between motherboard power supplies and backend equipment overcurrent protection. Regarding the issue of PTC self recovery patch fuse for short circuit and overcurrent protection outside the microcontroller. The output port of the microcontroller has direct external wiring. If there is a wiring error, it is easy to burn out the IC. In addition, if there is a load overload, it can also burn out the IC. Therefore, the output port of the I/O port is usually connected in series with a self recovery patch fuse for overcurrent protection.

　　In microcontroller circuit protection, disposable fuses or fuse resistors are also used for protection. Glass tube fuses and fuse resistors are traditional protection applications, with the advantage of low cost.

　　However, this application has gradually been phased out, and PTC self recovery patch fuses have been used instead. Due to the fact that disposable fuses only fuse for overcurrent overload and do not have automatic recovery function, it causes great inconvenience to users. PTC self recovery patch fuses can immediately protect and resume use when the current changes rapidly and greatly. In order to avoid subsequent equipment and local equipment damage, it can be seen that PTC self recovery patch fuses are superior to disposable fuses. PTC self recovery patch fuses demonstrate superior timely protection characteristics.

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