表面上SMD電流芯片保險絲中國供應商

Several China-based companies specialize in manufacturing surface mount (貼片式) current chip fuses, with Dongguan YAXUN Electronics and FBelec being prominent examples. These companies offer a variety of SMD fuse types, including fast-acting and slow-blow options, and cater to different voltage and current ratings, with some specializing in specific applications like car chargers.
Here’s a more detailed look at some key suppliers:
Dongguan YAXUN Electronics Co., 有限公司:
This company is a major manufacturer of circuit protection components, including SMD fuses, and has a strong focus on the household appliance and automotive industries. They offer various sizes (e.g., 0603, 1032, 1206, 2410, 6125) and types (快速打擊, 緩慢的打擊).

2410/1808/6125 SMD electrical fuse 0.5A~30A

Eaton Bussmann SMD Electrical Fuse 0603, 6125, 1206 0.25A-50A 32V

0603, 1206 SMD one-time fuse 1~30A 32V, 63V

Chip fuses are miniaturized circuit protection components that use surface mount technology (SMT). They are mainly divided into two categories: one-time fuse type and self-recovery type. The following is a detailed introduction from the aspects of classification, 工作準則, and application:
1. Core classification
‌One-time chip fuse‌
By size: EIA standard packages such as 0402 (1.0×0.5mm), 0603 (1.6×0.8mm), 和 1206 (3.2×1.6mm).
By fuse characteristics:
Slow fuse type (T/TT mark): suitable for circuits with surge currents such as motors and transformers;
Fast fuse type (F/FF mark): used for precision circuits without surges;
Typical structure: ceramic square tube package, filled with quartz sand arc extinguishing medium, and double-layer electrode design to improve conductive stability.

‌Resettable Chip Fuse (PPTC)‌‌
核心材料: polymer resin and conductive particles are composited, and automatic reset is achieved through temperature sensitivity;
Working process: when overcurrent occurs, the resin expands to block the conductive path, and after the fault is eliminated, the conduction is restored after cooling;
Common sizes: 0805, 1812, 2920, ETC。, maintaining current 0.05-3.0A.

2. Key technical characteristics
‌Fusing mechanism‌: follow Joule’s law (Q=I²Rt), the fuse heats up and melts when overcurrent occurs;
‌Environmental protection process‌: lead-free welding technology, compliant with RoHS 2.0 standards, lead content <1000ppm;
‌Performance optimization‌:
Quartz sand filling shortens the breaking time to 0.1 秒 (在 20 times the rated current);
The self-recovery response speed is inversely proportional to the fault current intensity.

3. 典型的應用程序方案
‌Consumer electronics‌: mobile phone batteries, USB interface protection (commonly used 0603 packaging);
‌工業設備‌: program-controlled switches, patch panel security units;
‌Automotive electronics‌: vehicle charging circuit overcurrent protection.

SST1300 3A300V 2410 1808 6125 貼片保險絲

芯片保險絲 1808 當前的KOAC 2410 SMD CCF1N正常吹1A 1.6A 2.5A 3.15A 4A 5A 6.3A 8A 8A 10A 125V表面安裝

0603 T1A-8A Ceramic Chip Fuse

4. 選擇注意事項
The rated current should be more than 1.25 times the working current;
The pulse resistance is weaker than that of glass tube fuses, and the impact of surge current needs to be evaluated;
The self-recovery type is not suitable for scenarios that require complete power-off protection.

Current mainstream manufacturers such as Oxis Electronics have launched improved square chip fuses, which optimize connection reliability through brass square caps and alloy fuses.