Overview
The Kyocera Accu-Guard II SMD Thin-Film Fuse datasheet provides detailed specifications for a range of chip fuse models designed for high precision and reliability in various applications. These fuses, constructed on alumina substrates, are praised for their superior electrical, mechanical, and environmental properties. The datasheet outlines features like operating temperature ranges, current carrying capacity, fusing current, resistance, voltage drop, pre-arc I2t, rated voltage, part numbers, and environmental characteristics.
Key Features and Specifications
The Accu-Guard II fuses come in standard chip sizes including 0402, 0603, 0805, 1206, and 0612. Key specifications include an operating temperature ranging from -55°C to +125°C and varying current carrying capacities at different temperatures. For example, the FO4O2E and FO603E types offer 107% of the rated current carrying capacity at -55°C, decreasing to 80% at +125°C. In contrast, the F0612D type delivers 107% capacity at -55°C and 75% at +125°C. The interrupting rating is listed at 50A and the insulation resistance is guaranteed to be 20MΩ after fusing at the rated voltage.
Ratings and Characteristics
Fusing current is provided for immediate response within five seconds at 25°C. Voltage drop across the fuse at 1x rated current, resistance, and pre-arc I2t values are given to help users in application design. Detailed part numbers corresponding to various current ratings and other electrical specifications like resistance and rated voltage are provided to assist selection.
Environmental Considerations
The second page of the datasheet outlines the environmental characteristics of the fuses, emphasizing robustness in harsh conditions. It includes tests like solderability and shear, rapid change of temperature, vibration, bend, and load life, indicating each scenario’s conditions and required performance metrics, such as no visible damage and changes in resistance being less than 10% after the tests.
Important Notes
Designers and engineers are encouraged to refer to the complete disclaimer and review it in full before placing any orders. This disclaimer mentions that it is incorporated into the catalog where these specifications originate and is accessible online.
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