Површинска моунт СМД Цуррент Цхип Фусе Цхина Добављач

Several China-based companies specialize in manufacturing surface mount (СМД) 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., Ltd.:
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 (Нпр., 0603, 1032, 1206, 2410, 6125) and types (fast blow, slow blow).

2410/1808/6125 СМД електрични осигурач 0.5А~30А

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

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

Осигурачи за чип су минијатурне компоненте заштите кола које користе технологију површинске монтаже (СМТ). Они су углавном подељени у две категорије: тип једнократног осигурача и тип самоопоравка. Следи детаљан увод са аспеката класификације, принцип рада, и примена:
1. Core classification
‌One-time chip fuse‌
By size: EIA standard packages such as 0402 (1.0×0.5mm), 0603 (1.6×0.8mm), и 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 (Пптц)‌
Core material: 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, итд., maintaining current 0.05-3.0A.

2. Key technical characteristics
Механизам за спајање: 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 секунди (у 20 пута називне струје);
The self-recovery response speed is inversely proportional to the fault current intensity.

3. Typical application scenarios
‌Consumer electronics‌: mobile phone batteries, USB interface protection (commonly used 0603 паковање);
Индустријска опрема: program-controlled switches, patch panel security units;
‌Automotive electronics‌: vehicle charging circuit overcurrent protection.

SST1300 3A300V 2410 1808 6125 СМД ФУСЕ

Цхип Фусе 1808 Тренутни КОАЦ 2410 СМД ЦЦФ1Н НОРМАЛ БРОБ 1А 1.6А 2.5А 3.15А 4А 5А 6.3А 8А 10А 125В Површински носач

0603 T1A-8A Ceramic Chip Fuse

4. Selection considerations
The rated current should be more than 1.25 пута радну струју;
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.