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As an important component for circuit protection, SMD PTC Resettable Fuse plays a crucial role in electronic devices. Proper selection can not only effectively protect circuits from overcurrent and overheating damage, but also ensure long-term stable operation of equipment. This article will provide a detailed introduction to the six core elements that need to be considered when selecting disposable patch fuses, helping engineers make professional decisions.
The following is a systematic summary of the conventional packaging of disposable patch fuses:
The following is a classification of disposable patch fuse brand manufacturers based on global market and technological characteristics, combined with industry trends and product features:
The terminal electrodes of patch fuses are usually treated with multi-layer electroplating technology. Gold plating and silver plating are two high-performance surface treatment schemes, and their differences are mainly reflected in material characteristics, application scenarios, and costs
Although the structure of disposable surface mount fuses (also known as surface mount fuses) is compact, the material selection is crucial for performance and reliability. The material composition mainly revolves around the following core parts:
The conventional volume of disposable patch fuses is mainly divided based on their packaging size, with common packaging sizes including 0402, 0603, 0805, 1206, 1210, 1812, 2010, 2012, 2016, 2410, 2412, 2512, 2920, etc. These package sizes are typically represented as four digits, with the first two digits representing length and the last two digits representing width, measured in hundredths of an inch (i.e. 1/100 inch). The following is a detailed introduction to some common packaging sizes of disposable patch fuses:
Littelfuse patch fuses, with their advanced design concepts and manufacturing technologies, have demonstrated unique advantages in the field of circuit protection, particularly in high-density electronic devices, automated production, and harsh environmental applications. The following is a detailed analysis of its core advantages:
Walter Electronics' 1206F and 1206T series are both patch fuses with dimensions of 3.2mm × 1.6mm, suitable for surface mount technology (SMT), but there are significant differences in technical parameters, performance characteristics, and application scenarios. Compare the differences between the two from the core dimension as follows:
Walter's 0603F and 0603T series patch fuses are two disposable fuses designed for different circuit protection requirements. There are significant differences between the two in terms of melting characteristics, response speed, and application scenarios.
Disposable patch fuses are widely used as circuit protection components in consumer electronics, automotive electronics, communication equipment, and other fields. From the perspectives of international and domestic brands, combined with technological characteristics and market positioning, we will summarize the mainstream brands and their advantages:
