Why is the Juding three terminal fuse so good?

The reason why the Ju Ding three terminal fuse is widely praised in the market is mainly due to its unique design advantages, excellent performance, and wide application adaptability. The following analysis is conducted from four dimensions: technical principles, product features, application scenarios, and market reputation:
1、 Innovative three terminal structure design
The traditional fuse adopts a two terminal design, while the innovative introduction of a third terminal in the polyding three terminal fuse forms a "input-output common terminal" three terminal structure. This design breakthrough brings two core advantages:
Current path optimization
The third terminal serves as a current detection node, which can monitor the current difference between the input/output terminals in real time and accurately identify overload or short circuit faults.
Compared to traditional fuses, the fault response time is shortened by more than 30%, especially in the scenario of small overcurrent (1.5 times the rated current), the melting speed is increased by 50%.
Thermal runaway suppression
The three terminal structure achieves current diversion and reduces the risk of thermal accumulation at a single terminal.
At 2 times the rated current, the surface temperature rise is 20 ℃ lower than that of traditional fuses, significantly reducing chain failures caused by high temperatures.
2、 Innovation in Materials Science and Technology
The Ju Ding three terminal fuse adopts a multi-layer composite material system, combined with precision manufacturing technology, to achieve performance breakthroughs:
Conductive layer
Silver palladium alloy (Ag/Pd 70/30) is selected as the electrode material, which has excellent conductivity (resistivity<2.5 μ Ω· cm) and strong resistance to sulfurization, making it suitable for harsh environments.
Fuse layer
Using nanoscale tin based alloys (Sn Bi system), uniform thin films are formed through magnetron sputtering technology, with melting point accuracy controlled within ± 2 ℃ to ensure consistent melting.
Insulation layer
Introducing polyimide (PI) and ceramic composite materials, with a withstand voltage of 600V and a dielectric strength greater than 15kV/mm, effectively preventing arc breakdown.
manufacturing process
By using femtosecond laser impedance tuning technology, the resistance accuracy can reach ± 0.1%.
Adopting lead-free reflow soldering process, compatible with SMT mounting, with a yield rate of over 99.9%.
3、 Leading performance parameters comprehensively
Parameter gathering three terminal fuse, traditional two terminal fuse
Response time<5ms (twice rated current)>10ms
I ² t value 0.005A ² · s (typical value) 0.01A ² · s
Temperature rise 20 ℃ (twice rated current) 35 ℃
Voltage withstand 600V 250V
Package size 0402/0603/0805 Starting from 1206
4、 Deep adaptation to application scenarios
Consumer Electronics
Case: A flagship mobile phone of a certain brand uses 0402 packaged three terminal fuses to protect the Type-C interface from 24V high voltage impact, reducing the failure rate by 80%.
Automotive Electronics
Case: The car OBC (car charger) uses a 1206 packaged product, which can withstand temperatures ranging from -40 ℃ to 125 ℃. It has passed the AEC-Q200 vehicle specification certification and has a failure rate of less than 0.1% during its lifecycle.
Industrial control
Case: The PLC module integrates a multi terminal fuse, which maintains 99.99% reliability even under motor start stop impact, and increases MTBF (mean time between failures) by three times.
new energy
Case: The DC side of the photovoltaic inverter adopts the 2920 package high current model, which can withstand 600V DC voltage and has a lightning surge immunity of 4kV.
5、 Market reputation and industry certification
user feedback
According to data from a leading power supply manufacturer, the product repair rate has decreased from 1.2% to 0.3% and customer satisfaction has increased by 40% after adopting a multi terminal fuse.
Industry recognition
Awarded titles such as "Top 100 Chinese Electronic Component Enterprises" and "National Specialized, Refined, Unique and New Little Giant".
The product has passed global safety certifications such as UL, VDE, TUV, CQC, etc.
Patent layout
We have applied for over 120 patents, including 45 invention patents, covering core technologies such as three terminal structures, material formulations, and manufacturing processes.
6、 Future technological evolution direction
Intelligent upgrade
Integrating temperature sensors and MCU to achieve dual parameter monitoring of current and temperature, with a warning accuracy of ± 1 ℃.
Material breakthrough
Research and development of graphene composite fuse layer, with response speed reaching microsecond level and endurance energy increased by 10 times.
Miniaturization limit
Launched 008004 (0.25 × 0.125mm) package, suitable for ultra miniaturization scenarios such as AR/VR devices.
The Ju Ding three terminal fuse has redefined the performance boundaries of circuit protection components through structural innovation, material revolution, and technological breakthroughs. Its "smaller, faster, and more reliable" characteristics not only solve the problem of response lag and thermal runaway of traditional fuses, but also demonstrate irreplaceable value in emerging fields such as 5G, electric vehicles, and the Internet of Things. With the continuous evolution of technology, the Ju Ding three terminal fuse is expected to become the "invisible guardian" of the next generation of electronic devices.