Surface Monte SMD CHIP CHIP FUSE FUSI Cina Fornitore

Several China-based companies specialize in manufacturing surface mount (SMD) 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 (PER ESEMPIO., 0603, 1032, 1206, 2410, 6125) and types (BUSH FAST, slow blow).

2410/1808/6125 Fusibile elettrico SMD 0,5 A~30 A

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

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

I fusibili a chip sono componenti miniaturizzati di protezione del circuito che utilizzano la tecnologia a montaggio superficiale (SMT). Si dividono principalmente in due categorie: tipo con fusibile monouso e tipo con ripristino automatico. Quella che segue è un'introduzione dettagliata dagli aspetti della classificazione, principio di funzionamento, e applicazione:
1. Core classification
‌One-time chip fuse‌
By size: EIA standard packages such as 0402 (1.0×0.5mm), 0603 (1.6×0.8mm), E 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)‌
Materiale core: polymer resin and conductive particles are composited, and automatic reset is achieved through temperature sensitivity;
Working process: Quando si verifica la sovracorrente, 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, ecc., 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 secondi (A 20 volte la corrente nominale);
The self-recovery response speed is inversely proportional to the fault current intensity.

3. Scenari applicativi tipici
‌Elettronica di consumo‌: mobile phone batteries, USB interface protection (commonly used 0603 confezione);
‌ Equipaggiamento industriale‌: program-controlled switches, patch panel security units;
‌Elettronica automobilistica‌: vehicle charging circuit overcurrent protection.

SST1300 3A300V 2410 1808 6125 Fusibile SMD

Fusibile chip 1808 Koac attuale 2410 SMD CCF1N BUOCO NORMAL 1A 1.6A 2.5A 3.15A 4A 5A 6.3A 8A 10A 125 V Monte superficiale

0603 T1A-8A Ceramic Chip Fuse

4. Considerazioni sulla selezione
The rated current should be more than 1.25 volte la corrente di lavoro;
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.