Probably would be worth contacting them and asking for clarification, but their products have been really good in my experience. If you do a search for 6 volt on their website, it will recommend a different LED that also looks like it is listed as a 12 volt one. I love their products, but their website has always been a bit difficult to deal with.
A colored LED will also work on less voltage, but you have to use a smaller resistor. (100 ohms works well for 4.5VDC) The LEDs that you found that said they didn't need resistors were probably a package unit that had them built in. Most modelers use the 'component LEDs' (my word) which are just the plain LEDs without anything else wired to them.
What type of circuit should I use? Is one better than the other…Series, Parallel, or Series/Parallel? The requirements of a lighting application often dictate what type of circuit can be used, but if given the choice, the most efficient way to run high power LEDs is using a series circuit with a constant current LED driver.
Value of Resistor = (VSupply - VF) ÷ IF. Where: VSupply = Supply voltage. VF = Forward Voltage. IF = Forward Current. The following formula can be used to calculate the value of power rating of the resistor. Power Rating of Resistor = IF2 × Value of Resistor. Finding the Value of Resistor to Connect with an LED.
in video i want to show you how to use LED light with 12v DC using resistor, or how to connect led to 12v DC
Let's assume you have a supply voltage of 12v dc. The chosen LED is rated at a Max forward current (Shown as IF) of 20Ma and its working avearage voltage is 2.2v. The sum is then supply V - LED v / forward current. Or 12v - 2.2 divided by 0.20. (12-2.2=9.8/0.02 = 490) Therefore a resistor of at least 490 ohms is required.
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do 12v leds need resistors
