What fuses do you know

Release Time:

2020-07-15

There are many types of fuses, including classification by protection form, classification by scope of use, classification by volume, classification by rated voltage, classification by breaking capacity, classification by fusing speed, etc. The following introduces the classification by type, which is divided into: current fuse: chip fuse, miniature fuse, insert fuse, tubular fuse; temperature fuse: RH block type, RP resistance type, RY metal shell; self-recovery fuse: plug-in, Laminates, patches.   1. Current fuse. 1. SMD fuse. There are 0805, 1206 and other specifications, using thin-film technology to precisely control electrical characteristics, due to its small size, it is more suitable for circuits in space-constrained applications to provide secondary protection Ideal choice, such as hand-held portable electronic equipment and Various instruments. 2. Tubular fuse. This is very common, especially in various power supply applications such as switching power supplies. 3. Blade fuse. More common in automotive applications, sometimes called forkbolt fuses 4. Miniature fuse.   Second, the thermal fuse. Thermal fuse, also known as thermal fuse (national standard GB9816.1-2013), is a temperature sensing loop cut-off device. Thermal fuses can sense the overheating generated during the abnormal operation of electrical and electronic products, thereby cutting off the circuit to avoid the occurrence of fire. It is a non-recoverable one-time thermal protection device, with RH, RF, RY and other series, the product has exquisite appearance and structure, good sealing, sensitive and reliable operating temperature, small current impact, and vibration resistance, mainly used in electric fans , rice cooker, electric frying pan, disinfection cabinet, etc.   1.RH square thermal fuse. The appearance is a plastic square shell shape, a square thermal fuse, generally a low melting point alloy type 2.RY metal shell thermal fuse. Using metal as the shell and organic chemicals as the heat-sensing body, it has sensitive induction, accurate action, sealed structure and reliable performance. For rice cookers, hair dryers, motors, etc. 3. RP resistance type thermal fuse, generally a low melting point alloy type     3. Self-recovery fuse. This is a self-recoverable fuse whose current is too large and the circuit is in an open state. It is a multiple-use type and is suitable for overload protection circuits. 1. Plug-in resettable fuse 2. SMD resettable fuse 3. Laminated resettable fuse