SMD fuse 1206 Fast-Acting 06F
SMD fuse 1206 Time Delay 06T
As a leader in the field of electronic protection, the SMD fuse 1206 is widely acclaimed across various industries and...
Surface Mount Fuses
Why Choose Us?
Rich Experience
XC Electronics (Shenzhen) Corp. Ltd is a leading industrial manufacturer that develops and manufactures all kinds of fuse and thermostat since 2002. The Hong Kong company named XGH ELETRIC COMPANY was founded in 1996.
Wide Range of Products
The products ranges miniature fuses, micro fuses, SMD fuses, power fuse, plug fuse, high voltage fuse, blade fuse, fuse holders, thermostat and thermal sensors for circuit protection and thermal protection solutions.
Professional Team
We have a stable R&D team with 30 people, each with more than 5 years' work experience. They can independent research and develop products and equipment.
Our Certificates
With vertically integrated manufacturing facilities certified TS16949, ISO9001, and ISO14001, All the products are lead-free that complies with RoHS Directive and REACH regulations. The products are extensively certified by CCC, VDE, cULus, PSE, KC, TÜV, CQC, ect.
What Is Surface Mount Fuses
A surface mount fuse, also known as a SMD fuse, is a type of electrical fuse that is designed to be mounted directly onto the surface of a printed circuit board (PCB). They are smaller in size than power fuses and are typically used in electronic devices and other low-power applications. They are designed to protect against overcurrent and short-circuit conditions.
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![SMD Fuse 0603]()
SMD Fuse 0603Lead-Free SMD Fuse 0603 Fast-Acting Thin-Film Fuse 06Fread more
Lead-Free SMD Fuse 0603 Slow-Blow Thin-Film Fuse 06T
The 0603 SMD Fuses are ultra-small (0603 size) thin-film devices designed... -
![SMD Fuse 2410]()
SMD Fuse 2410SMD Fuse 2410 Fast-Acting 24Fread more
SMD Fuse 2410 Time Delay 24T
The SMD Fuse 2410 is a surface mount type fuse rated for a voltage of 250V. These fuses are specially tested to meet the... -
![SMD Fuse 3210]()
SMD Fuse 3210Fast-Acting 32F SMD fuse 3210read more
SMD fuse 3210 Time Delay 32T
Designed to satisfy your electrical protection requirements, SMD Fuse 3210 is a modern tool. Running at 250V, this fuse...
Advantages of Surface Mount Fuses
There are several key advantages to using surface mount fuses in electronic applications, which include:
Space-saving design
Due to their compact size and surface mount configuration, these fuses require less space on a PCB compared to traditional through-hole fuses. This allows for more efficient use of board real estate and enables the development of smaller, lighter, and more powerful electronic devices.
Improved performance
Surface mount fuses typically have lower internal resistance and faster response times than their through-hole counterparts. This allows them to provide more accurate and reliable protection for sensitive electronic components.
Automated assembly
Surface mount fuses can be easily placed and soldered onto PCBs using automated assembly equipment, which reduces labor costs and increases production efficiency.
Environmental considerations
Surface mount fuses are generally more environmentally friendly than through-hole fuses, as they require fewer materials to manufacture and produce less waste during production and disposal.
Need for Surface-Mount Fuses
Historically, it is typically an industry’s need for technology advances that ultimately drives adoption in a wide range of applications. For example, brighter, more-efficient and lighter displays – first developed by the television industry – now are integral part of consumer, commercial, industrial, military and aerospace applications. In a similar way, it would appear the demands of the automotive industry are driving advances in circuit protection technology.
Resettable devices are the ideal choice where overcurrent conditions are the result of a transitory fault condition, but in many applications, particularly where fault currents can result in serious damage to other circuits or systems, the traditional one-time fuse is still the best choice for protection. While traditional clip-mounted glass tube fuses are found in a host of applications and blade-type fuses are ubiquitous in automotive applications, the move toward smaller, distributed and embedded electronic functionality has elevated the demand for high-performance, space-saving surface-mount fuses. In a similar manner as chip inductors and multi-layer ceramic capacitors (MLCCs), surface-mount fuses are packaged in a variety of EIA standard sizes determined by the technology uses and the rating.
While other surface mount, solid body fuses exist, this article focuses primarily on higher voltage applications that would generally utilize surface mount, wire-in-air fuses. In addition, information related to etched fuses is also presented, as they have garnered interest due of their low cost and limited use of board real estate.
Surface Mount Fuses (Smfs) Are Used In Electronic Circuits For Several Important Reasons
Space Efficiency
SMFs are compact and designed to occupy minimal board space, making them ideal for modern electronics where size is a critical factor.
Improved Reliability
Surface mount technology (SMT) allows for better solder joint reliability due to the smaller footprint and lower thermal stress during soldering.
Fast Response Time
SMFs typically respond quickly to overcurrent conditions, providing effective protection for sensitive components.
Ease of Manufacturing
Surface mount fuses can be easily integrated into automated assembly processes, enhancing production efficiency.
Versatile Design Options
They come in various ratings and sizes, allowing designers to choose fuses that best fit their specific application requirements.
Reduced Parasitics
Direct mounting on the PCB reduces inductance and resistance, improving overall circuit performance.
Visual Inspection
Many surface mount fuses have transparent housings or are designed to be easily inspected visually, aiding in troubleshooting and maintenance.
Application of Surface Mount Fuses
This surface mount fuse is suitable for various kinds of electronic devices'circuit over current protection. Such as automotive, lithium battery protection board, battery protection circuits, battery charging circuit, motor controls, cooling fan system, storage system, LED driver, Portable DVE player, LCD/LED monitor, LCD/PDP panel, LCD backlight inverter, PC server, notebook/laptops, office automation, USB ports, PC computer digital camera, game console, wireless base station, office electronic equipment, networking device, telecom device, industrial equipment, medical equipment, telecom system, communication equipment, industrial of lighting, power supply, backlight inverter and adapter applications.
Working Principle of Surface Mount Fuses
Surface mount fuses (SMD fuses) work by converting electrical energy into heat, which melts the fuse when the current exceeds a certain level:
Electrical energy to heat
When the fuse is on, the resistance of the fuse converts electrical energy into heat.
Heat dissipation
The heat generated by the current radiates into the surrounding environment through the fuse and shell.
Fuse melts
When the current exceeds a certain level, the heat production is more than the fuse can dissipate, causing the fuse to melt.
Arc extinguishment
The melted fuse element severs the strain wire, which initiates arcing. The arc is extinguished in the arc-extinguishing chamber, either in the upper section for low-to-moderate fault conditions, or in the lower section for maximum fault conditions.
Fuse unit dropout
The arcing rod continues to travel upward, causing the actuating pin to penetrate the upper seal and initiate dropout of the fuse unit.
Surface mount fuses contain a number of components, including
Fusing element
A metal strip or wire that carries the charge through the circuit. Surface mount fuses can have silver or nickel-chrome fusing elements.
Ceramic monolithic structure
A ceramic structure that can be used in the construction of surface mount fuses.
Multi-layer design
A design that exposes more of the fuse element to the glass-ceramic absorption material. This helps to quench the fuse arc more efficiently.
Silver termination
A silver termination with nickel and tin plating.
Operating temperature range
The temperature range at which the fuse can operate. For example, some surface mount fuses have an operating temperature range of -55°C to 125°C.
What Are The Common Parameter Terms For Surface Mount Fuses?
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 the fuse will be extended.
Rated capacity of fuse: Also known as breaking capacity. The rated fuse capacity is the maximum allowable current that a fuse can truly blow at rated voltage. When there is a short circuit, the fuse will pass multiple times an instantaneous overload current greater than the normal working current. During safe operation, it is required that the fuse remain intact (without bursting or breaking).
Nominal melting heat energy: Refers to the energy required to melt a fused component, expressed in I2t and read as "amperes per square second". Generally, in authoritative certification institutions, melting heat energy testing is required: apply a current increment to the fuse and measure the time of melting. If melting does not occur within approximately 0.008 seconds or more, the intensity of the pulse current will be increased.
Types of Surface Mount Fuses
There are several types of surface mount fuses available, each designed for specific applications and requirements. Some of the most common types include:
Fast-acting fuses
These fuses are designed to open quickly when subjected to an overcurrent condition, providing rapid protection for sensitive electronic components. They are commonly used in power supplies, telecommunications equipment, and other applications where a quick response is crucial.
Time-delay fuses
Also known as slow-blow fuses, these fuses are designed to withstand short-duration overcurrent conditions without opening. They are commonly used in applications with inductive loads, such as motors and transformers, where temporary current surges are expected.
Temperature-sensitive fuses
These fuses, also known as thermal fuses, are designed to open when exposed to excessive temperatures. They are commonly used in applications where overtemperature conditions pose a risk to the device or its components, such as battery packs and power tools.
Our Factory
XC Electronics (Shenzhen) Corp. Ltd is a leading industrial manufacturer that develops and manufactures all kinds of fuse and thermostat since 2002. The Hong Kong company named XGH ELETRIC COMPANY was founded in 1996. The products ranges miniature fuses, micro fuses, SMD fuses, power fuse, plug fuse, high voltage fuse, blade fuse, fuse holders, thermostat and thermal sensors for circuit protection and thermal protection solutions that are widely used in powers, household appliances, lightings, batteries, new energy resources, automotive equipment, communications devices and computers.
FAQ
We're well-known as one of the leading surface mount fuses manufacturers and suppliers in China. If you're going to buy high quality surface mount fuses at competitive price, welcome to get more information from our factory.
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