You don't have to worry about adding a resistor to an LED if you get an LED with a built in resistor! This pack of 25 red 5mm LEDs will help alleviate any frustrations you've had with accidentally burning them out by having a resistor in the diode itself. Each LED has an operating voltage range of 2.0V to 5V to help make your next project shine!
Each pack of these LEDs are conveniently bagged in reusable ESD safe packaging to make sure nothing accidentally gets damaged before you are able to use them.
If you look closely at the image below, there is a small, black square IC on the post to limit the current on these types of LEDs.
For more information, check out our LED tutorial.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
See all skill levels
Based on 2 ratings:
4 out of the 25 LEDs were duds (incredibly dim to the point where you couldn't tell if they were on), one was yellow and one actually exploded. The images on the product page show an LED running at 9v. I ran them at 3.3v and one completely exploded. Thankfully it was only one of the bulbs but I'm honestly scared to use the rest of these bulbs without an additional resistor. So to summarize, 6 out of the 25 bulbs were not usable for what I had planned. The rest work fine enough, I just hope they don't explode on me.
Even though TTL chips usually have current limiting resistors on their output pins, LEDs going directly to ground can take away too much voltage for that output to be an effective input to another TTL chip. Adding resistors makes that work, but takes up a lot of space on a breadboard.
These LEDs don't take away too much voltage and they don't take away too much space, either!