Explanation of 600V 0.5A plug-in fuse specifications and models.resettable fuse smd

　　The corresponding model of the brand 600V 0.5A plug-in fuse is A600-500, which is a recoverable fuse that plays an overcurrent protection role in the circuit. This model of fuse is a fast melting fuse that maintains a current of 0.5A, operates with a current of 1A, a maximum voltage of 600V, and a maximum voltage of 3A. The power generated by the fuse during operation is 5W. When the current passing through the fuse is 2.5A, the fuse will operate within 15S, At this moment, the minimum internal resistance of the fuse of the material number is 2.5 Ω, and the internal resistance after one hour of welding on the machine is 7 Ω. The above data are all for at room temperature of 25 ℃. We all know that the parameters of fuses can be affected in different working environments. If the rated current at 25 ℃ is 0.5A at room temperature, then at 40 ℃, the maintenance current of the fuse is only 88% of that at room temperature, which is 0.44A; At a temperature of 50 ℃, the fuse of this material number maintains a current of 80% below the gastrointestinal level, which is 0.4A; When the temperature rises to 60 ℃, the current maintained by the fuse at this temperature is 71% of room temperature, which is 0.355A; When the temperature reaches 70 ℃, the maintenance current of the fuse is 66% of room temperature, which is 0.33A; When the working temperature reaches a high temperature of 85 ℃, the maintenance current of the fuse is only 56% or 0.28A at room temperature. This is a high-temperature working environment. Therefore, when the working environment temperature is lower than room temperature and at 0 ℃, the maintenance current of the fuse is 120% or 0.6A at room temperature; When the working environment temperature is lower and reaches -20 ℃, the maintenance current of the fuse is 130% or 0.65A at room temperature; When the working environment temperature reaches an ultra-low temperature of -40 ℃, the maintenance current of the fuse is 145% of that at room temperature, which is 0.725A. So when making the selection, we need to consider the working environment temperature of the board to select the model more accurately.

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