The Operating Principle of Tubular Fuses
Why do sometimes patch type fuses become highly resistant we know that the operating principle of tubular fuses is: that overcurrent causes the thermal balance on the melt to be disrupted, and when the melt temperature rises to the melting point of the metal material, the middle part of the melt changes from solid to liquid. Due to the surface tension and gravity of the metal material suspended in the tube, the liquid part of the melt pulls away from both ends and drops downwards, The flashover caused by voltage causes the melt temperature to continue to rise, and further flashover and further widening the distance until the circuit is completely cut off.
For patch type fuses, their operating principle is the same. However, due to different structural states, the surrounding of the metal melt is tightly surrounded by the polymer or ceramic materials of its matrix. Even the melted metal cannot contract towards both ends and can only rely on diffusion, infiltration, or absorption towards the surrounding materials. If the overcurrent disappears during this process (such as the instantaneous pulse phenomenon), The process of diffusion or absorption is still in progress, which will result in an increase in resistance and incomplete melting of the melt.
Let's take a look at the consequences of this phenomenon again: because the overcurrent has disappeared at this time and has not caused any adverse effects on the circuit, although the fuse has not been completely blown at this time, the capacity of the melt has weakened, and when subjected to overcurrent again, it will be blown quickly, ensuring the protective effect on the circuit; If the second overcurrent is still an instantaneous pulse, it will cause the resistance to increase again but still not fully fuse, and the capacity of the melt will also weaken again;
In short, the phenomenon of Shenzhen SMD fuse with increased resistance and incomplete blown does not affect its protective function for the circuit. As long as the overcurrent lasts for a long time, it will be completely blown. On the contrary, if there is no change after experiencing overcurrent, there may be a problem with the protective function of the fuse. Compared with tubular fuses, the melt of slow break fuses is composed of two or more metal materials, and there is also a process of diffusion and infiltration between different materials when subjected to overcurrent. Therefore, it can withstand pulses and has the opportunity to increase resistance.
- |
- +1 赞 0
- 收藏
- 评论 0
本文由三年不鸣转载自XC News,原文标题为:automotive blade fuse specification.smd chip fuse,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
相关推荐
How to Choose a Patch Fuse?
Chip fuses are mainly used in electronic products such as digital cameras, laptops, and mobile phones. From traditional glass tube fuses to micro fuses and chip fuses, the focus of their selection is slightly different due to differences in product technology.
Precautions for Selecting Chip Fuses
With the development of highly integrated electronic products such as digital cameras, laptops, and smartphones, and urgent need for factories to adopt full automation to reduce high labor costs in the market environment. Chip fuses are widely used in overcurrent protection applications, but due to differences in technology, they have different advantages compared to plug-in self-recovery fuses. At the same time, chip fuses also have some of their own weaknesses.
The Selection of Miniature Fuses
Miniature fuses are primarily used in digital cameras, laptops, mobile phones, and other electronic products. From traditional glass tube fuses to miniature fuses, the selection focus varies slightly due to differences in product technology. The selection of miniature fuses involves the following elements.
一文了解SMD片式贴片保险丝的应用及工作原理
贴片保险丝(SMD Fuse)是一种安装在电路板上的表面安装元件(Surface Mount Device),通过在电路中形成热失控开断过电流的方式来起到保护电子设备不被损坏或引起火灾的作用。贴片保险丝是保险丝的一种生产及焊接形式,在市场上主要适应产品小型化、方便化等,根据其分断能力可以分为慢断和快断两种。
旭程(XC)保险丝选型指南
目录- Company Profile Fuse User's Manual Fuse Auto Fuse Fuse Holder Thermostat
型号- 06F,3S,C0015302Z,C0040302Z,3T,10C,06T,C0060303Z,4F,KSD9700,C0030301Z,6CH,C7500301Z,4T,C0015301Z,C0070303Z,4TE,C0040303Z,8TE,C0025302Z,5C,KSD305,5F,5G,C4000302Z,5H,9L,KSD301,C2000302Z,C0030302Z,10FV,C0020301Z,5S,C7500302Z,5T,C0010302Z,24F,12F,32F,C0080303Z,5SH,6B,6C,C0025301Z,6F,6G,24T,6H,12T,C3000301Z,C4000301Z,C5000301Z,2F,C2000301Z,C0030303Z,32T,R3-13,5GH,R3-12,R3-11,5CH,6S,C0020302Z,6T,2T,5TE,XC-1,BS1362,C0010301Z,C3000302Z,5TR,3F,3G,C5000302Z,C1000302Z,XC-2,C0050303Z,C0035302Z,C0020303Z
005.163020004 24F 系列 6.3A/250V 24F 贴片快断保险管(环保产品)产品承认书(005.163020004 24F SERIES 6.3A/250V 24F SMD QUICK BLOW FUSE(Green Product) SPECIFICATION FOR APPROVAL)
描述- 该资料为旭程电子(深圳)有限公司提供的24F贴片快断保险管产品规格书。内容包括产品型号、技术要求、尺寸结构、机械性能、电气特性、安装方式、环境特性、信赖性试验、产品标志、包装和料号解释等。
型号- 24F,24F 系列,005.163020004,24F SERIES
What are the Types of Glass Tube Fuses
What are the types of Glass Tube Fuses?
Application of SMD Fuses in Independent Devices
SMD fuse, also known as SMD chip fuse, is a type of SMD packaged fuse that has a wide range of applications due to its small size and chip type. Its application in some independent devices is gradually playing an irreplaceable role.The scope of battery powered equipment has expanded from powerful hand tools for craftsmen to sensors for housing supervision and even medical assistance services. The security of such devices faces enormous challenges. To ensure safe operation of these independent devices, JDTFUSE offers two SMD fuses with low power consumption and high tolerance tripping time.
How to Choose the Rated Voltage and Current of Chip Fuses
How to choose the rated voltage and current of a patch fuse: The rated voltage of a patch fuse depends on the current flowing through it, and is not related to the working voltage of the circuit. From the perspective of safe use, the rated voltage of SMD fuse is proposed, which is the highest working voltage of the circuit when the SMD fuse is in a safe working state. This means that fuses can only be placed in circuits with a working voltage less than or equal to the rated voltage of the fuse. Only in this way can the fuse operate safely and effectively.
24F 系列1A /250 V 24F 贴片快断保险管(环保产品)产品承认书(24F SERIES 1A /250V 24F SMD QUICK BLOW FUSE(Green Product)SPECIFICATION FOR APPROVAL)
描述- 该资料为旭程电子(深圳)有限公司提供的24F贴片快断保险管产品规格书。内容包括产品适用范围、型号定义、相关标准、尺寸与结构、机械特性、电气特性、安装方式及条件、环境特性、信赖性试验、产品标志和包装等方面的详细信息。
型号- 24T,24F,24TSERIES,005.110020003,24F 系列,24F SERIES,24T 系列
SMD fuse and Chip Fuse Specifications
SMD fuses can be divided into SMD disposable fuses and SMD self recovery fuses. Among them, the specifications of patch disposable fuses include series 060312062410 fuses, and the specifications and dimensions of patch self recovery fuses include series 0603, 0805, 1206, 1210, 1812, 2920, etc.
Chip Fuse Products Classified by Performance
According to industry experts, SMD fuses are a relatively high skill level new variety in the small fuse profession. Chip fuses can be divided into chip current fuses and chip self recovery fuses. After one-time fuse maintenance, it needs to be replaced. After self restoring fuse maintenance, it can be self restored and reused after a power outage.
How Many Types of Fuses are There?
Below is an introduction to the classification by type, which can be divided into current fuses: patch fuses, miniature fuses, plug-in fuses, and tubular fuses; Temperature fuse: RH square type, RP resistance type, RY metal case; Self recovery fuse: plug-in, laminated, patch.
What are the Classifications of Fuses
There are many types of fuses, including classification by protection form, scope of use, volume, rated voltage, breaking capacity, and fusing speed.
Supplementary knowledge on purchasing chip type fuses
Fuses (patch type fuses), also known as fuses, as the name suggests, are used to protect circuit components. When the current exceeds the specified range of the electrical appliance, the fuse will heat up and blow, thereby achieving the purpose of cutting off the current and protecting the electrical appliance. Supplementary knowledge on purchasing chip type fuses.
电子商城
服务
可定制烧结NdFeB磁铁的剩磁最高1.45T,易加工成各种尺寸。充磁方向:径向充磁、轴向充磁、辐射充磁等;镀层:Zn、Sn、Ni、电泳等,最高工作温度220℃。
最小起订量: 1 提交需求>
登录 | 立即注册
提交评论