Voltage rating: The voltage rating of a fuse must be equal to or greater than the effective circuit voltage. The standard voltage rating series for general patch fuses are 24V, 32V, 48V, 63V, and 125V. Resistance: The resistance of a fuse is not very important in the entire circuit. But for fuses with an amperage less than 1, the resistance will be a few tenths of an ohm, so this issue should be considered when using fuses in low-voltage circuits. Most fuses are made of positive temperature coefficient materials, so there are also two types of resistors: cold resistance and thermal resistance. Environmental temperature: Fuses are temperature sensitive components. The current carrying capacity of the fuse was tested at an ambient temperature of 25 ℃. The higher the ambient temperature, the higher the operating temperature of the fuse, the lower the current carrying capacity of the fuse, and the shorter its lifespan. On the contrary, at relatively low temperatures, the lifespan of
Among various small fuses, SMD chip fuse is a type with high technological content. In recent years, driven by the application of portable products such as mobile phones, digital cameras, and laptops, this type of product has gradually become popular. With the continuous reduction of prices and further improvement of production processes, as well as the expansion of application fields, the cost-effective advantage of SMD chip fuses will be favored by more OEMs. SMD patch fuses are widely used, particularly in portable electronic products, power converters, in car entertainment facilities, communication peripherals, and home audiovisual devices. Among them, portable electronic products cover a wide range, including mobile phones, digital cameras, PDAs, laptops, game consoles, PMPs, MP3s, learning machines, and so on; In terms of power converter applications, lithium battery protection boards and inverter protection for mobile phones and other products are currently the main appli
1. Under normal circumstances, fuses play a connecting role in the circuit. 2. Under abnormal (overload) conditions, the fuse serves as a safety protection component in the circuit, which can safely cut off and protect the circuit through its own fusing. 2、 The working principle of a fuse: When a fuse is energized, the heat converted from electrical energy causes the temperature of the melt to rise. When normal working current or allowable overload current passes through, the heat generated is radiated to the surrounding environment through the melt or shell, and the heat dissipated 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 rol
We know that there are many series of fuses in the electronic component market, including patch fuses. This series of fuses is commonly used in factories, with few being used by individual users. But what should we pay attention to when testing patch fuses? Today, editor Dai Liang, let's take a look together. Firstly, The detection method for patch fuses is recommended to be based on the following aspects: normal current, fusing current, open circuit voltage, short circuit current, impulse current, and ambient temperature. 1. Normal current: Firstly, we must know the normal current flowing through the fuse in the circuit used. Usually, we need to pre-set a derating amount and choose according to the following principle: the normal current must be less than the product of the rated current and the derating coefficient. 2. Fusing current: According to UL specifications, the fuse should quickly fuse at twice the rated current. But in most cases, to ensure reliable fusing, we recomm
Fuses must be easily melted metal wires in order to fuse in a timely manner and provide protection when the current is high, so lead antimony alloy wires are usually used. The fuse material is mainly made of low melting point alloys such as aluminum antimony alloy. The main element of aluminum magnesium alloy aluminum plate is aluminum, and a small amount of magnesium or other metal materials are added to enhance its hardness. Aluminum alloy with Mg as the main additive element is also known as rust resistant aluminum alloy due to its good corrosion resistance. Because it is itself a metal, its thermal conductivity The fuse material is mainly made of low melting point alloys such as aluminum antimony alloy. The main element of aluminum magnesium alloy aluminum plate is aluminum, and a small amount of magnesium or other metal materials are added to enhance its hardness. Aluminum alloy with Mg as the main additive element is also known as rust resistant aluminum alloy due to its g
5154 aluminum plate is used in welded structures, storage tanks, pressure vessels, ship structures and offshore facilities, and transportation tanks. 5182 aluminum plate is used in thin plate processing for easy to open can covers, automotive body panels, control panels, reinforcements, brackets, and other components. 5252 aluminum plate is used in the manufacturing of decorative components with high strength, such as automobiles and other decorative components. Having a bright and transparent oxide film after anodizing 5254 aluminum plate is used in containers for hydrogen peroxide and other chemical products. 5356 aluminum plate is used for welding aluminum magnesium alloy welding rods and wires with a magnesium content greater than 3%. 5454 aluminum plate is used in welded structures, pressure vessels, and marine facilities pipelines. 5456 aluminum plate is used in armor plates, high-strength welded structures, storage tanks, pressure vessels, and ship materials. 5457 alu
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
