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100pcs Ultra Bright 5mm L... has been added to your Cart

100pcs Ultra Bright 5mm LED Light Emitting Diode Diffused Red

4.6 out of 5 stars 186 ratings

Price: $6.20 ($0.06 / Count) Get Fast, Free Shipping with Amazon Prime & FREE Returns
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5mm Red 100pcs

Enhance your purchase

  • 100pcs Super Bright Red led diodes
  • Outer Diameter:5mm Round; Wavelength Red (620nm-625nm)
  • It is great for electronic and electrical experiments;
  • All Mist Shape(Diffused)
  • Current:20mA
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  • 100pcs Ultra Bright 5mm LED Light Emitting Diode Diffused Red
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  • EDGELEC 100pcs 1K ohm Resistor 1/2w (0.5Watt) ±1% Tolerance Metal Film Fixed Resistor, Multiple Values of Resistance Optional
  • +
  • EDGELEC 100pcs 330 ohm Resistor 1/4w (0.25 Watt) ±1% Tolerance Metal Film Fixed Resistor, Multiple Values of Resistance Optio
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Customer Rating 4.6 out of 5 stars (186) 4.7 out of 5 stars (744) 4.8 out of 5 stars (1111) 4.6 out of 5 stars (1902) 4.8 out of 5 stars (34) 4.6 out of 5 stars (802)
Price $6.20 $6.19 $12.99 $5.95 $5.49 $4.29
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Product description

Color:5mm Red 100pcs

Item: LED Light Luminous Diodes Kit
< Forward voltage -Current:
(1) White: 3.2-3.4V -Current: 20mA
(2) Red: 2.0-2.2V -Current: 20mA
(3) Yellow: 1.8-2.2V -Current: 20mA
(4) Green:3.0-3.2V -Current: 20mA
(5) Blue: 2.8-3.0V -Current: 20mA
(6) Orange:1.9-2.1V -Current: 20mA
These light-emitting diodes work well for a wide variety of applications including use for Arduino projects;
It is great for electronic and electrical experiments;

Product information

Color:5mm Red 100pcs

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4.6 out of 5 stars
4.6 out of 5
186 global ratings
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Top reviews from the United States

Reviewed in the United States on September 18, 2018
Color: 6 Colorsx20pcsVerified Purchase
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4.0 out of 5 stars Nice set of diffused LEDs
By Achint on September 18, 2018
After having disappointing outcomes of getting diffused LEDs from eBay, I was quite relieved that these LEDs were in fact diffused LEDs.

I got the 6 color LED set that comes with 20 LEDs of each color (white, blue, orange, yellow, red, green.) I intended to put them inside the painted acrylic balls for a birthday party. I was able to hook them up to a CR2032 battery without any problem and they light up fine.

OPERATION VOLTAGE LEVELS OF LEDs
The LEDs of different color require different voltages. I love the fact that this product comes with a print-out of operational voltage range for each type of LEDs. Just in case someone didn't get it with their order, they are as following:
White : 3.2V - 3.4V
Red: 1.8V - 2.2V
Blue : 2.8V - 3.0V
Yellow : 1.8V - 2.2V
Orange : 1.9V - 2.1V
Green : 3.0V - 3.2 V

FIGURING OUT IF YOU NEED RESISTOR OR NOT
You might or might not need a resistor with the LEDs. The resistor will prevent the LED from burning out if the battery being used is applying more voltage that the LED can handle. The CR2032 batteries that I have 3V output, so a resistor was needed to drop the voltage to the safe operating voltage.
In order to determine if you need a resistor or not, you need to consider the operating voltage of the LED you plan to use and what voltage will be applied to the LED.
If you are using Arduino then it operates at 5V, so you would need to add a resistor if it is directly connected to the input from Arduino. If you are using a single LED e.g White LED, its safe operating voltage is 3.2 - 3.4 V so you would need a resistor to drop the voltage down to 3.3V. The amount of resistance you would need can be determined by the formula V=I/R, or R = V/I. So if we want to drop the voltage in the circuit by 1.7V (5V - 3.3V) and the current is 200 mA then the resistor we need should be of 1.7/.02A = 80 ohm.

Though if you are using LEDs in series then the voltages of LEDs add up. e.g. If you are using three Blue LEDs in series then they can be connected to a battery of 9V since when connected in series they will be able to withstand voltage between 8.4V - 9V.

If you are using a processor that operates at 3V (e.g. nodeMCU) or using a battery that operates at 3V (e.g. CR2032) then you might need to add a resistor to LEDs that can withstand voltages less than 3V.

MY LEDS ARE NOT WORKING, WHAT DO I DO NOW
First make sure that the LEDs are connected correctly. LEDs will have two wires/electrodes. The long wire is the positive electrode (anode) and should be connected to the positive terminal of the battery. The shorter wire of LED is the negative electrode (cathode) and should be connected to the negative terminal of the battery. If these are not connected properly then not only the LED won't light-up, but it will block the flow of current to the rest of the circuit. Sometimes the LED wires are not cut properly and you might want to flip it around to see if that is the case.

Also, make sure that the Voltage of battery is within the operating range of LED. Usually, if you are using a battery with lower voltage or if there are too many LEDs connected in series causing the total voltage of LEDs to go beyond the battery's voltage then also the LED(s) won't light-up.
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8 people found this helpful
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Reviewed in the United States on February 23, 2019
Color: 5mm Red 100pcsVerified Purchase
2 people found this helpful
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Reviewed in the United States on February 4, 2021
Color: 5mm Green 100pcsVerified Purchase
Reviewed in the United States on June 9, 2020
Color: 5mm Yellow 100pcsVerified Purchase
2 people found this helpful
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Reviewed in the United States on November 12, 2018
Color: 6 Colorsx20pcsVerified Purchase
One person found this helpful
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Reviewed in the United States on January 1, 2021
Color: 5mm Blue 100pcsVerified Purchase
Reviewed in the United States on January 12, 2021
Color: Multi-coloredVerified Purchase
Reviewed in the United States on October 27, 2017
Color: 5mm Blue 100pcsVerified Purchase
One person found this helpful
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