Self-recovery fuse can be divided into patch self-recovery fuse and plug-in self-recovery fuse. With the increasing miniaturization of product requirements, SMD fuses are widely used. Self-recovery fuse is composed of specially treated Polymer and conductive particles distributed in it. When the line is short-circuited or overloaded, the heat generated by the large current flowing through the self-recovery fuse melts the polymer resin, and the volume increases rapidly, forming a high resistance state (B), and the working current decreases rapidly, thus limiting and protecting the circuit. So what are the characteristics and application range of SMD self-recovery fuse?
I. "Features" of SMD self-recovery fuse.
(1) meet RoHS requirements;
(2) Size: 0603 ~ 2920;
(3) current range: 0.05A~5A；;
(4) The voltage level ranges from 6V to 60V, meeting the needs of computers and various electronic applications;
(5) Small pad size;
(6) Fast action time;
(7) Low impedance;
(8) Working temperature range:-40 ~+85℃;
(9) There are many varieties and complete specifications, which can replace imported models of Raychem, Little Eluse and BOURNS;
(10) Small size, firm structure and convenient automatic installation;
II. "Application" of SMD self-recovery fuse.
(1) computers and peripheral equipment;
(2) Mobile phone battery pack;
(3) Automotive electronics;
(4) Power supply;
(5) Communication system;
(6) Other applications, etc.
