USB Type-C (hereinafter referred to as Type-C) is the latest standard for USB connectors. There is no distinction between positive and negative sides, and the data transmission speed can reach up to 10Gbits/second (Gbps), supporting "USB Power Delivery (PD)" power supply. However, as the charging current increases, the likelihood of accidents such as abnormal heating and burning of connectors also increases. So in order to prevent such accidents from happening, it is necessary to equip the TYPE-C with an overcurrent protection element - PPTC thermistor, also known as the PPTC self recovery fuse. PPTC is a component that blends carbon into a polymer resin and sandwiches it between metal foils. In normal working conditions, the resistance of PPTC components is much lower than other components in the circuit. Under overcurrent, the resistance of the components increases (acts), thereby reducing the current in the circuit to a value that other circuit components can safely carry. This
The quick break fuse tube is generally used in the circuit of resistive load, such as electric kettle, electric stove, and Space heater with electric heating wire. Because the electric heating wire is a resistive load, and the working current of resistive load is basically unchanged, the quick break (quick fuse) fuse is required. Alternatively, quick break fuses may also be used in circuits that require the protection of sensitive and valuable devices such as ICs. When the load experiences a short circuit, it is necessary to fuse it in a timely manner for protection. Slow break fuses, also known as delay fuses, are mainly used for inductive or capacitive loads, such as square fuses, circular fuses, plastic encapsulated miniature fuses, which are generally very common in switching power supplies. In the switching power supply, there is a Electrolytic capacitor with a very large capacity. When the capacitor is first powered on, it is close to short circuit, and its charging current
There are often testing requirements in circuit protection to prevent high voltage misconnections. In general, the self recovery fuse can be used in conjunction with overvoltage protection devices to prevent high-voltage misconnections. When high voltage is mistakenly connected to the circuit, the backend overvoltage protection device will quickly react, generate large currents, and limit the backend voltage to a certain range. The large current generated by the backend overvoltage protection device can quickly activate the , limit the total current of the system, and ensure that the backend overvoltage protection device will not be damaged due to long-term overcurrent. The key to this cooperation is that after enduring surges for a long time, can quickly act and limit the circulating current before the backend overvoltage protection device reaches the limit value. Therefore, low current can more effectively cooperate with back-end overvoltage protection devices to prevent misconn
Generally speaking, DC power circuits have protection requirements for anti reverse connection, and in many cases, protection is achieved by connecting anti reverse diodes in series. However, in some cases, anti reflection diodes are not suitable due to the series voltage drop. At this point, the self recovery fuse based on surge protection can be combined with one-way TVS to achieve anti reverse protection. As shown in Figure 6, when the DC power supply is reversed, the unidirectional TVS is directly connected, generating overcurrent, causing the to act quickly and limit the current. When applying this scheme, it is also necessary to consider the withstand voltage of and the power of TVS. self recovery fuses are widely used for overcurrent protection in power lines, communication lines, and various I/O input and output ports of electronic products in communication, security, industrial, automotive, consumer and other fields. It can effectively prevent product damage due to short
USB ports are increasingly included in Industrial internet of things (IIoT) devices. The data speeds of USB 3.0, 3.1 and 3.2 vary from 5GB/s to 20GB/s. USB protocol can provide bandwidth and reliability required by almost all industrial applications. The USB port provides a connection between the host and IIoT devices for real-time monitoring and control, enabling users to make smarter decisions and improve productivity across multiple processes. Overcurrent and overvoltage in IIoT devices may be caused by power overload, surge, or short circuit, which can generate a large amount of heat and increase the risk of physical damage or electrical fire. self recovery fuses can disconnect the circuit during a fault event like disposable fuses, but they are recoverable, allowing them to achieve longer lifespan of the product. Each fuse is composed of a positive temperature coefficient material, and its internal resistance increases exponentially with increasing operating temperature. The
Rechargeable batteries, as an indispensable energy supply method in modern life, have been widely used in various devices such as mobile devices, smartphones, electric vehicles, etc. However, in the event of prolonged charging or charger failure, the charging battery may experience overload, which can cause danger. To address this issue, we recommend using self recovery fuses for overload protection on rechargeable batteries, providing comprehensive safety protection for your device. self recovery fuse is an intelligent electronic protection component that rapidly increases impedance and limits the flow of current when the current exceeds the rated current, thereby protecting rechargeable batteries and devices from the harm caused by overcurrent. Now, we will focus on the advantages of self recovery fuse in overload protection of rechargeable batteries. Firstly, the application of self recovery fuse on rechargeable batteries helps to prevent damage from overcurrent to the battery
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
