續流二極體flyback diode),有時也稱為飛輪二極體freewheeling diode)或是snubber二極體,是一種配合電感性負載使用的二極體,當電感性負載的電流有突然的變化或減少時,電感二端會產生突波電壓英語Voltage spike,可能會破壞其他元件。配合續流二極體時,其電流可以較平緩的變化,避免突波電壓的發生。

一個有電感負載及續流二極體的電路

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