SMD fuses are relatively high-tech varieties in the small fuse industry. SMD fuses can be divided into SMD current fuses and SMD resettable fuses.

       SMD current fuses can be classified into three types according to their performance: fast blowing, slow blowing and enhanced melting heat.

       SMD resettable fuses can be classified according to size: 0402, 0603, 1206, 1812, 2018, 2920, etc. The size of 0603 series is 1.6*0.8mm; the size of 0805 series is 2.0*1.2mm; the size of 1206 series is 3.2*1.6mm; the size of 1210 series is 3.2*2.5mm; the size of 1812 series is 4.5*3.2mm; the size of 2016/2018 series 5.0*5.0mm; 2920 series size is 7.5*5.5mm.

       Computer peripheral products, mobile phones and other communication equipment, digital cameras, monitors, batteries are commonly used patch self-recovery. If the chip fuse has high requirements, it generally adopts the thin film process, ultra-low internal resistance, and is suitable for overcurrent protection, such as surge.

       There are four basic types of chip fuses:
   (1) Slow blow/time delay fuse;
   (2) Double alloy slow blowing fuse;
   (3) Fast-acting fuse;
   (4) Very fast response fuse.

       Slow-blow fuses are ideal for circuits that contain transient current surges or power-on surge inflows. These circuits include: motors, transformers, incandescent lamps and applicable load devices.

  Fast-acting fuses respond quickly and are suitable for circuits without transient current surges.

   Very fast acting fuses usually have silver connections, and these fuses are often used to protect semiconductor circuits due to their current limiting capabilities.