1mA is a small current for standard lighting emitting diode. Does it work for our LED?
We need to confirm that yes, 1mA is enough to make a SMD LED or DIP LED light up.
However, it will likely be dim. Because most of LED chip need more current to dirve it up.
Most of common indicator LEDs (such as 5mm white through-hole LED, Yellow LED, 5mm green Throguh-hole LED, Amber LED, 2835 SMD LED ect.) are rated for 20mA operation current.
For those LED that have power within 0.1W, 10-15mA will make LED very bright and perfectly visible. At 5mA, the LED is clearly lit but notieably dimmer and with 1mA-2mA, our ELD will glow, but it will be fairly dim. It is easily visible in a dark room, but might be hard to see in direct sunlight or a bright office.
So in summary, 1mA will be able to light up the LED and make it work? Yes, as long as the voltage is high enough.
And is it safe? Yes, it's well below the danger zone for a standard LED.
