YPBL3.70T Circuit Protection

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PTC resettable fuses, also called polyfuses or Polymeric Positive Temperature Coefficient resettable fuses, are polymer semiconductors used for overcurrent and overvoltage protection circuits. By combining semiconductor properties and dielectric properties, PTC fuses offer an efficient protective solution for versatile electronic applications. Compared to traditional fuse, the PTC technology provides superior failure protection, superior protection performance, enhanced reliability and increased safety.

YXBL3.70T is one of the leading products manufactured by YXP Group, which is a innovative designer and leading manufacturer of PTC component and assemblies. YXBL3.70T resettable fuses are designed for overcurrent and overvoltage protection in a wide variety of application. It takes advantage of the nonlinear positive temperature coefficient characteristics of the PTC to continuously monitor the circuit current and temperature. YXBL3.70T PTC fuse has a wide operating current range and can be applied in various applications such as LED lighting, mobile equipment, power boards, consumer electronics, telecommunication equipment and automotive systems.

The working principle of YXBL3.70T PTC resettable fuse is based on the PTC nonlinear temperature coefficient of resistance.When the input current is lower than fixed, its resistance is low and conduction current is larger. When the input current gets larger, Its resistance keeps decreases and its temperature reaches the point where the temperature coefficient of resistance dramatically rises. This leads to the trapped current voltages exceeds the specified fuse\'s design voltage. This increases the PTC\'s temperature to the point where it becomes an open circuit and current is interrupted.

Due to the nonlinear temperature coefficient, the PTC fuse has self-recovery capability. When the fault condition is eliminated and the temperature is reduced to a certain extent, the overcurrent protection device automatically restores its electrical characteristics and circuit current can be continued. This fast recovery action reduces the likelyhood of nuisance tripping and reduces the failure time of overcurrent protection.

The YXBL3.70T has low power consumption, fast response time, low temperature coefficient and wide operating temperature range. This makes it suitable for applications such as LED lighting, power boards, consumer electronics, telecommunication equipment and automotive systems. It has the features of small size, superior protection performance, enhanced reliability and increased safety, which make it an excellent choice for overcurrent protection for these application fields.

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