Chip Fuse Products Classified by Performance
Normal current flow: Everyone needs to understand the normal current flow through the patch fuse in the circuit being used. Generally speaking, everyone needs to set a derating amount in advance, and then select according to the following basic principle: the normal current amount must be lower than the product of the rated current and the derating coefficient.
Fusing current: According to UL specifications and models, patch fuses should quickly fuse at twice the rated current. But in most cases, to ensure stable fusing, we suggest that the fusing current should be greater than 2.5 times the rated current. In addition, when the time of the circuit breaker is important, the judgment must also be made by referring to the circuit breaker performance diagram provided by the manufacturer.
Open circuit voltage: The open circuit voltage should usually be selected below the rated voltage. For example, when using a Chip fuse with a rated voltage of DC24V in an ACl00V circuit, it may ignite the chip fuse or cause the fuse to crack.
The ambient temperature of the fuse should be within the specified operating temperature range. Selection Method for Chip Fuses
There are many series of fuses in the electronic component market, among which are patch fuses. This series of fuses is widely used in factories, with few being used by individual users.
According to industry experts, SMD fuses are a relatively high skill level new variety in the small fuse profession. Chip fuses can be divided into chip current fuses and chip self recovery fuses. After one-time fuse maintenance, it needs to be replaced. After self restoring fuse maintenance, it can be self restored and reused after a power outage.
Fig.1
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