Introduction to product description: Self-recovery fuse is composed of specially treated polymer resin (Polymer) and conductive particles (Carbon Black) distributed inside. Under normal operation, the polymer resin tightly binds the conductive particles outside the crystalline structure to form a chain-like conductive electrical path. At this time, the resettable fuse is in a low resistance state (a), and the current flows through the resettable fuse. The heat generated is small and does not change the crystal structure.
Self-recovery fuses are composed of specially treated polymer and carbon black. Under normal operation, the conductive particles are tightly combined with the polymer resin outside the crystalline structure to form a chain-like conductive path. At this time, the resettable fuse is in a low resistance state (a). The heat generated by the resettable fuse on the circuit when the current flows is very small, and the crystal structure will not change.
When the circuit is short-circuited or overloaded, the large current flowing through the self-recovery fuse will cause the polymer resin to melt, and the volume will increase rapidly to form a high-resistance state (b), and the operating current will decrease rapidly, thereby limiting and protecting the circuit .
When the fault is eliminated, the resettable fuse cools and crystallizes again, the volume shrinks, the conductive particles re-form a conductive path, and the resettable fuse returns to a low resistance state, thus completing the protection of the circuit without manual replacement.
There are 0402 series, 0603 series, 0805 series, 1206 series, 1210 series, 1810 series, 2016 series, 2018 series, 2920 series 9 series, according to the size of the internal resistance of the fuse can be divided into low internal resistance patch self-recovery type Fuses, self-recovery fuse series are: 0603SL series, 0805SL series, 1206SL series, 1210SL series, 1812SL series 5 series. The above series of fuses have UL certification, and have passed RoHS and halogen-free requirements.