The main conditions between fast fuses and slow fuses
Suitable for semiconductor devices that are sensitive to current changes and require rapid circuit disconnection, such as integrated circuits. When a short circuit or instantaneous high current
occurs in the circuit, a fast melting fuse can melt in a very short time, protecting the device from damage.
In some high-speed digital circuits, fast melting semiconductor fuses are usually chosen to protect the chip from the impact of short-circuit currents.
For some semiconductor devices with high starting current, such as semiconductor devices in motor drive circuits, slow melting fuses are more suitable. This type of device will have a much higher
current at the moment of startup than the normal operating current. If a fast melting fuse is used, it may melt when the device is started.
When the motor starts, the starting current may be several times the normal operating current, and using a slow melting fuse can avoid accidental melting.
