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LED贴片灯珠0402尺寸为目前最小的量产贴片灯珠尺寸为1.0*0.5*0.45MM
、设计建议： Design ConsideraTIon 设计电路时，通过 LED 的电流不能超过规定的最大值，同时，还需要使用保护电阻，否则，微小的电压变化将会引起较大的电流变化，可能导致产品损毁。建议使用以下（A）电路，该电路能够很好的调节通过每个 LED 的电流：不推荐使用（B）电路，该电路在持续的电压驱动下，LED 的正向电压（VF）发生变化，电流会随之而发生变化，可能使某些 LED 承受不高于规定的电流值。 In designing a circuit， the current through each LED must not exceed the absolute maximum raTIng specified for each LED.In the meanwhile resistors for protecTIon should be applied，otherwise slight voltage shift will cause big current change，burn out may happen. It is recommended to use Circuit A which regulates the current flowing through each LED rather than Circuit B. When driving LED s with a constant voltage in Circuit B， the current through the LED s may vary due to the variaTIon in Forward Voltage （VF） of the LED s In the worst case， some LED may be subjected to stresses in excess of the Absolute Maximum Rating.
