Resistors for use with LEDs - 3.3V, 5V, 6V, 9V, 12V - 100 pack
Description
These high quality resistors are suitable for use with LEDs - simply choose the voltage you want to power your LED from and the correct resistors will be supplied.
The resistors supplied are based on a voltage across the LED of 2V or 3V and a current rating of 20mA. Please check your LED Forward Voltage (VF) and select the correct voltage from the drop down above. If you are unsure, please assume 2V forward voltage to be on the safe side.
The following value resistors will be provided:
Supply Voltage | LED voltage | Resistance | Current (approximately) | Power rating |
---|---|---|---|---|
3.3V | 2V | 68 Ohm | 20mA | 0.25W |
3V | 15 Ohm | 20mA | 0.25W | |
5V | 2V | 150 Ohm | 20mA | 0.25W |
3V | 100 Ohm | 20mA | 0.25W | |
6V | 2V | 220 Ohm | 20mA | 0.25W |
3V | 150 Ohm | 20mA | 0.25W | |
9V | 2V | 390 Ohm | 19mA | 0.25W |
3V | 330 Ohm | 20mA | 0.25W | |
12V | 2V | 560 Ohm | 20mA | 0.5W |
3V | 470 Ohm | 20mA | 0.5W |
All quoted values are approximate.
We provide 0.5W resistors for 12V supply as we choose resistors so you never use more than 60% of the rated power - this is to supply you with a large safety margin and to ensure the long life of the resistor and the LED. This ensures that your resistor does not get too hot while in use.
Your circuit should be arranged as in the following diagram:
