
Revain sells several variants of these kits. I received the "eboot" version of LN0628 which was satisfactory. I usually design 10mA LED circuits, but have found that I can get by with half that for indicator use. A common mistake in description is that they glow when forward biased. That's wrong: they glow when reverse-biased. When forward biased they behave like a standard diode with a voltage drop of about 0.7 volts. The longer contact labeled "anode" must be positive. You can use them with AC power supplies when current is limited; I have one in my lighted doorbell button (with an appropriate damping resistor to control the current).

Upgrade Your Car'S Interior Lighting With Phinlion Super Bright Green LED Bulbs - Pack Of 4
5 Review

Adjustable Focus 405Nm Blue Violet Mini Dot Diode Module Head With 100MW Power For DC 3-5V Micro Tubes
4 Review

EDGELEC 180Pcs 5Mm 9 Colors X 20Pcs Assorted LED Lights Flat Lens 1.14In Long Lead + 300 Resistors (DC 6-12V) Bulb Lamps Light Emitting Diode Kit
6 Review

Chanzon 10Pcs 8Mm LED Pilot Diode Light With Frosted Round Lens And 24Awg Wiring In 5 Colors, 8Mm Panel Mount + 5Mm 12V Universal Flush Dash Board Indicator Panel Socket Lights Lamp Bulb Set
9 Review