Analysis of SMD Self-Resettable Fuse Screen Printing Comparison Table

With the continuous development of electronic products, patch resettable fuses (PTC Resettable Fuse) are widely used in various circuit designs due to their excellent overcurrent protection performance. In order to facilitate identification and selection, manufacturers usually print specific silk screen codes on the surface of chip fuses. This article will introduce in detail the SMD self-restoring fuse screen printing comparison table to help engineers and purchasing personnel quickly and accurately identify product specifications and improve work efficiency.

The chip resettable fuse is an electronic component with overcurrent protection function. When the current exceeds the set value, the material inside the fuse will heat up rapidly and the resistance will increase significantly, thus limiting the current flow and protecting the safety of the circuit. After the current returns to normal, the fuse will automatically cool down, the resistance will return to its original state, and it has the ability to self-recover multiple times.

The silk screen code is the characters printed on the surface of the chip fuse, usually including model, rated current, rated voltage, size and other information. Through silk screen codes, users can quickly distinguish products of different specifications and avoid selection errors. Silk screen codes are also important for inventory management and quality tracking.

Different manufacturers have slightly different screen printing formats, but generally follow the following rules:

The letter part usually indicates the product series or model;

The digital part represents the rated current in amperes (A);

Sometimes voltage rating or size information is appended.

For example, "J100" might mean a J-series, 1.0A rated chip fuse.

| Silk screen code | Rated current (A) | Rated voltage (V) | Remarks |

|----------|---------------|---------------|------|

| J050 | 0.5 | 6 | Small size |

| J100 | 1.0 | 6 | Standard type |

| J250 | 2.5 | 12 | High current type |

| J500 | 5.0 | 24 | High current type |

When selecting a chip resettable fuse, you need to select it based on the circuit operating current, maximum allowable voltage, and size restrictions. Through the silk screen comparison table, confirm that the rated current and voltage of the fuse meet the circuit requirements to ensure protection effect and safety.

The same silk screen code from different manufacturers may represent different parameters. It is recommended to confirm with the product specifications;

Silk screen printing is sometimes blurry due to the influence of the printing process. If necessary, professional equipment can be used to assist in identification;

The ambient temperature and circuit working conditions have a great impact on the performance of the fuse, so comprehensive considerations need to be taken into consideration when selecting the fuse.

采购环节快速确认产品规格；

维修时快速识别替换件；

质量管理中追踪批次和型号；

设计阶段辅助选型和参数确认。

贴片自恢复保险丝丝印对照表是电子工程师和采购人员必备的工具，有助于快速识别产品规格，避免选型错误，提高工作效率。了解丝印代码的含义和对应参数，结合实际电路需求，能够更好地发挥贴片自恢复保险丝的保护作用，保障电子设备的安全稳定运行。建议在选购和使用过程中，结合厂家提供的详细规格书，确保选型准确无误。