Based on the information provided, it is difficult to accurately determine the six-pin screen printing as " FU" The exact model of the chip. Because different manufacturers may use different silk screen codes, and the silk screen code does not directly infer the chip model.
< br >
To determine the model of the chip, try the following steps:
< br >
1. Find the brand and model of the electric toothbrush and check the product manual or the manufacturer's website to see if information about the chip model is provided.
< br >
2. If the manufacturer provides support services, you can contact their technical support department to provide details of the electric toothbrush and ask for the silk screen printing as " FU" The chip model.
< br >
3. If none of the above methods can find an accurate answer, you can try to take a clear photo of the chip and post it on an electronic engineering-related forum or website, asking other electronic engineers if they can help identify the chip.
< br >
It should be noted that identifying the exact model of an electronic component may require specialized knowledge and skills, so if you do not have the relevant background knowledge, it is best to seek the assistance of a professional.