小尺寸的ECS無源晶體支持時序解決方案ECS-200-20-5PXDN-TR，更高的等效串聯電阻 (ESR) 是工程師在使用更小的無源晶振晶體時會看到的其他東西。ESR是內部電阻，代表電子電路中的能量損失。幾乎每個電路都會有不同程度的某種 ESR。
ESR的水平取決于許多因素，例如特定的結構、材料、質量等。ESR可以在從幾毫歐到幾歐（或 1,000 毫歐）的任何地方測量。如果ESR太高，您可能會看到不同的結果，例如晶振功率損耗、效率低下和電路不穩定。
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