If the cathode max currents of a Proton tricolor led are 50,25,25 how much current can the anode handle?

The tricolor LED's in question are custom common anode LED's from Proton LED in Lyons GA. I heard that because of heat, the total package current had to be less than the sum of the cathodes.

If the cathode max currents of a Proton tricolor led are 50,25,25 how much current can the anode handle?
Do you have a data sheet for the device? that would be the place to look for this information. It is possible that the total allowable device dissipation would be less that the sum of the maximums for the component LED operated individually, but it is also possible that it is equal to the sum, it depends on the specific device and operating condition.
Reply:A tricolor LED is really three devices in one. The anode of each device handles the same current as the cathode. The cathode current of of each device is channeled to a common cathode and it can handle geegowatts. No just kidding. However definetly much more then all the cathodes can throw at it.





See the spec sheet below.
Reply:Proton :





That is true of the LED. In the Tricolor LED displays we run all 3 at no more 15 mA to be safe. The wavelength stays constant of course and we still generate a nice pure white with very adequate brightness. The common anode was a tricky design


for us, but well worth it!


- Protonled