LED for 2V
prices for one piece
Producer: Rafi 1.90 692
the following colours are available
Colour |
avail. |
Remark |
Red |
20 |
- - |
Green |
12 |
- - |
Yellow |
2 |
- - |
!!! A suitable series resistor must be fitted externally.!!!
These items do NOT have the necessary external resistor.
This Resistor is calculated by:
R = (UB - UF) DIV IF with the following parameters:
| Supplying voltage (Battery) |
UB |
| Led voltage |
UF |
Current through LED
(Forward current) |
IF |
Recommended resistor ratings:
- for 5-7V=270Ω / 0.25W
- for 12 - 14 V = 680 Ω / 0.50 W
- for 24 - 28 V = 1500 Ω / 0.75 W
