According to the size and performance, SMD current fuses can be divided into the following shape numbers:
(1) Products can be divided into 0402, 0603 and 1206 according to size.
(2) Products can be divided according to performance.
The classification is: fast melting, slow melting and enhanced melting heat energy.
Patch self-healing fuses can be divided into 0402, 0603, 1206, 1812, 2920 and so on.
According to the size. If the requirements of SMD fuses are high, they are generally made of thin film, and the internal resistance is extremely low, which is suitable for overcurrent protection such as surge. Computer peripheral products, mobile phones and other communication equipment, digital cameras, monitors, batteries are commonly used. Manufacturers who can produce with this technology have a certain scale.
SMD fuses can be divided into disposable SMD fuses and SMD self-recovery fuses. One-time fuse needs to be replaced after protection, and the self-recovery fuse can be used after power failure.
There are four basic types of chip fuses:
(1) Slow fuse / delay fuse;
(2) Dual alloy slow-blow fuse;
(3) Fast response fuze;
(4) Ultra-fast response fuze.
Slow-burning fuses are ideal for circuits that contain transient current surges or impulses that are about to be energized. These circuits include motors, transformers, incandescent lamps and suitable load equipment.
The fast response fuse has a fast response speed and is suitable for circuits without transient current surges
Fast-response fuses are usually connected to silver. Due to the current-limiting capabilities of fuses, these fuses are often used to protect semiconductor circuits.