Enter LED Requirements:

Source Voltage:	VDC (3.6 - 24.0 Volts)
LED forward voltage (Vf):	VDC
Desired LED operating current:	mA (10 - 50 mA)

Note: If you are using multiple series connected LED's, add the Vf voltages together.

	Click to Calculate Current Limiting Resistor

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Calculated Results:

You will need a standard  ohm  watt resistor

Resistor Color Code:

Calculated Resistance Value:	Ohms
Actual LED Current:	mA
Power Dissipated by LED:	mW
Power Dissipated by Resistor:	mW