power fuse supply
中文
Online Message
Online Message
News & Events News & Events

News & Events

Keep abreast of company dynamics

fast blow or slow blow fuse for amplifier.Technical standards for fuses

08

2023-11

Share:

　　42e0365f7bfecca

　　1. Rated zero power resistance

　　PPTC thermistors should be packaged according to zero power resistance levels, and the resistance range should be indicated on the outer packaging. After the withstand voltage and current resistance tests, the change rate of the resistance before each group of samples is extremely poor δ| After Ri - Before Ri - (After Rj - Before Rj)/Before Rj | ≤ 100%

　　2. PTC effect

　　A material has a PTC (Positive Temperature Coefficient) effect, which means that the resistance of the material increases with increasing temperature. Most metal materials have the PTC effect. In these materials, the PTC effect is manifested as a linear increase in resistance with increasing temperature, which is commonly referred to as the linear PTC effect.

　　3. Nonlinear PTC effect

　　The material undergoing phase transformation will exhibit a phenomenon where the resistance rapidly increases by several to more than ten orders of magnitude along a narrow temperature range, known as the nonlinear PTC effect. Various types of conductive polymers exhibit this effect, such as polymer PTC thermistors. These conductive polymers are very useful for manufacturing overcurrent protection devices.

　　4. Initial resistance Rmin

　　Before being installed in the circuit, test the resistance value of the polymer PTC thermistor of the self resetting fuse series at an ambient temperature of 25 ℃.

　　5. Rmax

　　Under room temperature conditions, the self resetting fuse series polymer PTC thermistor acts or reflows.

　　The maximum resistance value measured after one hour of installation in the circuit board.

　　6. Minimum resistance (Rmin)/maximum resistance (Rmax)

　　At a specified ambient temperature, such as 25 ℃, the resistance value of a specific model of self resetting fuse series polymer thermistor before installation in the circuit will be within a specified range, that is, between the minimum value (Rmin) and the maximum value (Rmax). This value is listed in the resistance column of the specification.

Read recommendations:

3 phase motor thermostat

micro blade fuse

thermal camera sensor

Temperature control fuse.resettable fuse hold current

The Protection Application of Self Recovery Fuses in Sweepers.mini cooper fuse box symbols meaning

PREVIOUS:fast blow or slow blow fuse for microwave.Fuse selection

Return

Next：fast blow or slow blow fuse for multimeter.What are the standard requirements for self restoring fuse technology?

Related News

August 12,2023

How to prevent current fuse holder failure?mini blade fuse kit

　　　　1. Carefully select the correct current fuse　　The application, operating parameters, and environment of fuses can all affect their lifespan, so choosing the correct fuse is very important.　　2. Ensure the rationality of circuit design　　Faults in circuit design can also lead to fuse failure, which can be catastrophic. Only by ensuring that the equipment operates within a larger rated range can faults be avoided.　　3. Reasonable use of fuses　　Correct use can avoid faults caused by errors, and it is also important to control the ambient temperature of the fuse used, which helps to reduce the possibility of current fuse holder failure. If you are unfamiliar with the use of fuses, you can directly consult the fuse manufacturer.

October 25,2023

mini cooper fuse box location.How to choose a fuse correctly?

　　　　In today's rapidly developing science and technology, fuses are applied in all aspects of people, and the correct selection of fuses is related to the personal and property safety of users! How to choose a fuse correctly?　　1. When choosing a fuse, you first need to consider the safety certification of the fuse used in your product. Then, choose its shape and size, rated voltage (usually 250V), and breaking capacity (fast or slow fuse), so that you can preliminarily choose a model.　　2. Then select the upper limit and lower limit of the rated current of the fuse based on your circuit, so that you can determine the specific model and current,　　3. Then select the fuse for testing and choose the most suitable one. Fuses, also known as fuses, are made of alloys with low melting points. When an overload or short circuit fault occurs in household electrical equipment, the current of the circuit increases, causing the fuse to quickly heat up to the melting point and melt, and timely disconn

August 25,2023

How to select a suitable resistive fuse.tube amp blown fuse symptoms

　　　　The specifications of resistance fuses are distinguished based on current. If we choose a fuse with a high rated current, it will not be able to ensure safety during use. So when choosing fuses, everyone must choose according to the actual situation. So how can we choose the most suitable resistive fuse?　　The first point is that everyone should first choose a reliable production enterprise. Only by finding a trustworthy fuse supplier can we obtain the highest quality fuse products from them.　　Secondly, when selecting fuses, we must pay attention to the different materials of fuses that have different usage effects, and choose the appropriate type based on the specific properties of our own production. We may be more concerned about the price of resistive fuses, but with the continuous development and improvement of the entire market, the price of such fuses has been effectively controlled. In other words, as long as everyone purchases through normal channels, they are not afraid to

October 27,2023

car charger fuse replacement.Essential knowledge for selecting automotive fuses

　　　　1、 The function of a fuse:　　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. Normal working current or allowable　　When a certain overload current passes through, the heat generated is radiated to the surrounding environment through the melt and 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 melt temperature can increase; When the temperature reaches or exceeds the melting point of the melt, the melt melts, fuses, and cuts off the current, playing a role in safety protection of the circu

September 11,2023

Brief analysis of the protective components and their corresponding functions required for circuits

　　　　In order to reduce losses and unnecessary trouble, the use of corresponding protective components in the circuit allows design engineers to quickly and better identify and analyze fault problems after designing the circuit, without damaging the newly designed circuit. Circuit protection components are essential in circuits.　　The types of protective components in the circuit include: fuse tubes, temperature fuses, current fuses, self recovery fuses, overcurrent protectors, surge protectors, gas discharge tubes, varistors, overvoltage overcurrent protection, overheating protection, thermistors, LED drive overheating protection, circuit breakers, hybrid protectors, LED protection components, and ESD protection devices.　　Circuit protection devices mainly include overvoltage protection devices, overcurrent protection devices, and overvoltage protection devices.　　Overvoltage Protection Device (OVP): Used to protect subsequent circuits from load shedding or instantaneous high voltage dama

+86 755 89762685

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

About Us Products Resource Solutions Certifications News & Events Contact Us

© Copyright. xc 2023. All rights reserved.粤ICP备11049369号