During the operation of some product circuits, static electricity can be generated, which poses a great threat to some high-speed circuits. PGB fuses are needed to provide ESD protection (static electricity protection) for product circuits that are prone to static electricity. For example, products such as high-definition televisions, IPTV receiving devices, and set-top boxes that generate static electricity during high-speed operation can directly damage the internal chips of the product through exposed connectors or data cables, making it difficult to restore the internal chips of the product. How is the Lite PGB fuse protected from static electricity? The Lite PGB fuse can instantly transition from a high resistance state to a low resistance state, releasing the surge generated by static electricity to the ground. It maintains consistency in both high and low frequencies and has strong anti-interference ability. Compared with other products, Lite PGB fuse has better electrostat
In electronic products, chip fuses have two functions: protecting end users from harm and protecting circuits from damage. These functions benefit both device users and manufacturers. Over the past decade, the demand for electronic devices serving information technology, mobile, and consumer applications has sharply increased in the market. With this rapidly growing demand, the risk of unexpected situations in electronic devices has also increased, requiring the use of overcurrent protection devices such as chip fuses to avoid risks such as electrical overload. Before analyzing the electrical characteristics of various chip fuses in the market, it is first necessary to understand the basic design principles behind each technology. Standard fuses may be based on metal wires placed inside sealed ceramic or glass tubes filled with air or sand, but chip fuses are based on completely different principles. Most chip fuses appear to be standard chip devices and are made of single or mul
With the development of technology, there are more and more components in circuit design, so the requirements for electronic component packaging are becoming smaller and smaller. The 0603 SMD fuse emerged in this context. The 0603 chip fuse provides ultra fast action fusing characteristics in a smaller chip size. The rated current value of the device is up to 4.0A, and its breaking capacity is 35A at a rated voltage of 32V. The 0603 fuse adopts standard metric dimensions (91.55mmx85mmx45mm) and can provide secondary overcurrent protection for low-voltage power supplies in DC-DC converters, battery chargers, and portable consumer electronic devices. Through strictly controlled manufacturing processes and advanced thick film technology, fuses provide excellent long-term stable fusing characteristics for portable devices such as mobile phones, PDAs, digital cameras, cameras, and LCD flat panel displays. The halogen free and lead-free 0603 chip self recovery fuse supports lead-free
Disposable fuses can be divided into fast fuse and slow fuse. The models of disposable slow fuse available in Jidian Tong brand include: slow break JFC0603, slow break JFC1206, and slow break JFC2410. A one-time slow blown fuse, also known as a delay fuse, has a delay characteristic characterized by its ability to remain intact during non fault pulse currents in the circuit and provide protection against prolonged overload. Some circuits have a current that is several times greater than the normal working current at the moment of switching. Although this current peak is high, it appears for a short time. We call it pulse current, also known as impulse current or surge current. Ordinary fuses cannot withstand this current, and if a regular fuse is used in such a circuit, it may not be able to start normally. If a larger specification fuse is used, it will not be protected when the circuit is overloaded. The melt of the delay fuse is specially processed and has the function of absor
The main difference between slow fuse and fast fuse is its ability to withstand instantaneous pulse current, which means that it can withstand the impact of surge current when switching on and off the machine without action, thus ensuring the normal operation of the equipment. Therefore, slow fuse is often referred to as surge resistant fuse. From a technical perspective, slow melting fuses have a large melting heat value of I2t, and the energy required for fuse melting is relatively high. Therefore, for fuses with the same rated current, slow melting has a much stronger ability to withstand pulses than fast melting. Due to the fact that the I2t of a slow fuse is larger than that of a fast fuse of the same specification, the fusing time in the event of overcurrent in the circuit will also be slower than that of a fast fuse. Is it possible that the protection performance may be worse than some people are concerned about? We said no! Because once a circuit malfunctions, the overcurr
Self recovery fuses can be divided into patch based self recovery fuses and plug-in self recovery fuses. With the increasing miniaturization of product requirements, the range of use of patch based fuses has increased. The main encapsulation of SMD self recovery fuses are: 0805, 0603, 1206, 1812, 2920, and their working principle is: The self recovery fuse is composed of specially treated polymer resin and conductive particles (Carbon Black) distributed inside. Under normal operation, the polymer resin tightly binds conductive particles outside the crystalline structure, forming a chain like conductive electrical pathway. At this time, the recoverable fuse is in a low resistance state (a), and the heat generated by the current flowing through the self recovering fuse on the circuit is small and does not change the crystal structure. When a circuit experiences a short circuit or overload, the heat generated by the large current flowing through the self recovery fuse causes the pol