The design and development of waterproof fuse holders are aimed at better installation and replacement of individual fuses. When installing fuses, we need to use some necessary equipment. Only after the equipment is completed can we ensure a smoother installation of the fuse. When installing equipment, we should use waterproof fuse holders because without this equipment, we cannot install fuses on the products we need.When studying fuses, we usually take a look at the waterproof fuse holder. Due to different integrations being installed on different circuit boards, if the circuit boards are different, then the waterproof fuse holder we choose should be different. The installation position is different, and the waterproof fuse holder we choose should be different.The fuse holder can be divided into panel mounted fuse holders, PCB (hard) board fuse holders, automatic plug-in fuse holders, and plug-in fuse holders. The fuse holder must include requirements for resistance to current, volta
1. What is the normal operating current of the fuse, whether it cannot be blown during normal circuit operation, and immediately blown when the circuit is overloaded. 2. Is the standard voltage for circuit operation appropriate? The standard voltage for circuit operation must be lower than the rated current of the fuse. 3. Circuit overload: After the fuse blows, the circuit can be disconnected, making this overload circuit completely disconnected and unable to be maintained according to other circuits, thus maintaining circuit safety reasonably. 4. The minimum and maximum allowable abnormal current occurrence. 5. The working temperature of the fuse shall not exceed the limit value that the fuse can withstand. During the operation of certain circuits, the ambient temperature is prone to rise, so it is necessary to choose a suitable ambient temperature for maintenance. 6. The fuse should be able to withstand single pulse, impulse current, surge voltage, operating current, and ci
When current passes through a conductor, contact occurs and the conductor may generate heat because it has a certain resistance. And the calorific value is calculated according to this formula: Q=0.24I2RT. 2. Among them, Q is a calorific value and 0.24 is a parameter. I is the current flowing through the conductor, R is the resistance of the conductor, and T is the time flowing through the conductor. By using this formula, you can easily discover the simple principle of fuses. When the raw materials and appearance of the fuse manufacturing are clear, its resistance R is relatively clear (if its resistance temperature coefficient is not considered). When an electric current flows through it, it becomes hot, and over time, its calorific value also increases. 4. The height of current and resistance determines the speed of thermal energy, while the structure and assembly of the fuse determine the speed of thermal energy loss. If the speed of thermal energy is lower than the speed of
The heat emitted by high-voltage fuses through convection, conduction, and other means gradually reaches a balance with the heat generated. If the generated heat is greater than the dissipated heat, the excess heat gradually accumulates on the melt, causing the temperature of the melt to rise; When the temperature reaches or exceeds the melting point of the melt, it will cause the melt to melt, fuse, and cut off the current, playing a role in safety protection of the circuit. Classification of high-voltage fuses: 1. Divided into: φ 2 φ 3 φ 4 φ 5 φ 6 and others. 2. According to the fuse characteristics, it is divided into fast fuse type, medium delay fuse type, and delay fuse type. (It can also be divided into express and strong delay). 3. According to the breaking capacity, it can be divided into low breaking type, high breaking type (and can also be divided into enhanced breaking type). 4. According to safety standards (or usage regions), it can be divided into UL/cUL (North
In electronic products, patch fuses have two main functions, which are to provide overload protection, avoid circuit damage, and protect users from personal injury. These functions are beneficial for both device users and manufacturers. In the past two decades, the electronic product market for information technology, mobile, and consumer applications has grown rapidly. With the miniaturization and SMD of electronic components, fuses have also moved towards miniaturization. The application of SMD fuses is becoming increasingly evident and widespread. They are used in computer and peripheral interfaces, mobile phones, portable devices, energy storage systems, medical devices, networking devices, LCP/PDP devices Overcurrent protection in automotive electronics and battery packs has shown great skill. Key performance parameters The fusing characteristic is the most important characteristic of patch fuses, which defines the melting time at a certain overcurrent level. If the current
Most SMD fuses look like standard SMD devices, using single or multi-layer ceramic substrates. Some previous designs used epoxy glass fiber substrates similar to printed circuit boards. Its structure includes: a shell, a lower cover, quartz sand, a fuse, and two terminal blocks. The shell is a ceramic box like structure without a bottom surface, and the two terminal blocks are connected together through a suspended fuse set inside the shell, which is clamped on the edge of the shell. The basic fuse in the middle is a high conductivity material, such as copper, gold or copper tin, silver palladium alloy. Depending on the type of substrate, the fuse can use laser fine tuned thick film deposits or chemically etched metal layers to achieve the desired performance parameters, and adhesive gold wires can also be used. Due to the determined shape and thickness, when subjected to overvoltage and the current reaches a certain level, the fuse will fuse within a certain period of time. To a
MB:+86 13924633629 Ms.vicky
E-mail: waimao@xcfuse.com
Factory :
XC Electronics(Shenzhen)Corp.,LTD
Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd
Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
