Parameter Min Typ Max Unit Luminous Intensity 4308 5600 6200 mcd Viewing Angle ~ 30 ~ Deg PeakEmission Wavelength ~ 515 ~ nm Forward Voltage ~ 3.6 4.5 V Reverse Voltage ~ 5 ~ V Forward Current ~ 20 ~ mA Reverse Current ~ ~ 100 uA Operating Temperature Range -25°C to +80°C Storage Temperature Range -40°C to +80°C Lead Soldering Temperature (4mm from body) 260°C for 5 seconds Color Link to LED http://www.lsdiodes.com/5mm/ The 5 mm green led - 6200mcd Will this be qualiyied as a 3 or 5 V led? Im going to have 4 leds in serie, 4*3 V = 12V So I can connect it directly to the 12V from the PSU. Will this work? Ill need a switch somewhere to to turn on/off
First off, 4 LEDs in series will require more than 12v. This is because the forward voltage requirement is 3.6v, NOT 3v. That results in a series voltage requirement of: 3.6v*4=14.4v You may also want to check this thread: http://forums.bit-tech.net/showthread.php?p=542414 There I posted a link to a nice calculator for series LEDs that will help you figure out all the values you need. If you want to drive these off of a 12v power line, then you would be best served by using a series/parallel combination, or strictly parallel. However, be careful as the series resistance necessary to minimize the forward current will be different than the necessary parallel resistance.
Red led forward voltage 1.7 Forward current 20Ma 12V molex Switch on/off In series 4 leds of 1.7 V and 20Ma and at the end a 270 Ohm resistor. 0V molex Is this a right setup?
A new question If I want to change the colour on the power led, to blue... how? How many volt are the Mainboard giving? The same question for the acticit led to
