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LED Resistor Calculator

R = (Vcc - Vf) / If · Next E12 value

z.B. 3,3 / 5 / 12 V

Forward Voltage

Durchlassstrom

Exact Resistance

150 O

Next E12 Value

150 O

Verlustleistung: 60.0 mW
Formel: (5V - 2V) / 20mA