LED lamp bead type commonly used in solar lamps
Hello everyone, today I will share with you a few knowledge points about the LED lamp beads of solar lamps. At present, on the market, you will see many manufacturers' standard lamp bead models such as 5730, 3030, 2835, 5050, COB and so on. Let me introduce what these numbers mean. Take 5730 patch as an example:this patch lamp bead is usually named after the product's specifications, that is,5.7mm*3.0mm. The voltage of red and yellow light is generally around 1.9-2.4V. The voltage of blue, white and green light is generally between 2.9-3.6V. If the power is 0.2W, the rated current is 60mA. If the power is 0.5W, the rated current is 150mA. It is actually a parameter value of current and voltage.
We all know that in the case of series connection, the voltage does not change, and the current is added. Therefore, the entire lamp bead should be lit, and the required starting voltage must be at least 3.2V, there are not too high at this voltage, it may cause a short circuit or damage the lamp beads.
We assume that this 5730 lamp bead is 0.5W, then the starting current required for this light source board is: 48*150mA=7200mA, of course, 7200mA represents the best state, if it is lower than this current, the light source can also. It`s just not playing its best condition. We then use voltage*current=7.2A*3.2V=23.04Wh, so we can conclude that the entire light source board is discharged with a power of 23W, which can theoretically last about an hour.