Driving the Seoul Acriche... ?

The Acriche LED cannot be connected directly to 110V or 230V!
You need a resistor to limit the current to 40mA for the 110V and to 20mA for the 230V version.
But if you buy the LED w/PCB as your link show, the correct resistors are already soldered on the PCB and you can connect the PCB directly to 110V.
A picture of the 4W 220V version is HERE.
 
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