LED Resistor

Calculate the right resistor value for LEDs. Enter forward voltage, current, and supply voltage for series or parallel configs.

Supply Voltage (V)

LED Forward Voltage (V)

LED Current (mA)

Configuration

Exact Resistance

150.0 Ω

Nearest Standard

150Ω

Actual Current

20.0 mA

Resistor Power

60.0 mW

¼W resistor OK

R = (Vs - Vf) / I = (5 - 2) / 0.0200 = 150.0Ω

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