What are the resistances for each colour of the LEDs?

To calculate the resistor you need to use for an LED: take your supply voltage, subtract 1volt for the drop over the LED (actually 0.7-1.5 v typical) then divide that figure by .015 amps. (15mA is usually very bright). That figure is the resistor value. Lots of tolerance upwards from that value. (e.g if supply is 12 volts, to run an LED try 11/.015= 733 ohms or more (nearest available resistor value is 820 ohms)

Can you provide 24vdc to these LED's?

Yes but you need the original voltage and current for the LED -OR- a resistor box to bring the voltage up from 0 vdc to the full bright voltage level that is safe for the LED. With that and using Ohm's Law or E=IR you can figure out the value of the Dropping Resistor you will need for a 24 vdc supply.

I am using these to back light a clock. i hooked one of them up to a 9v battery. it fried it. will it stop the frying the bulb if i string 4 or 5?

Sounds like you want to string these in series. Add up each LED voltage rating for the color LED and if is equal to or greater than 9v you should be ok. EG: 2.2 + 3.2 + 2.2 + 3.2 + 2.2 = 10.8v should be ok.

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(100 Pcs) MCIGICM 5mm LED Light Diodes, LED Circuit Assorted Kit for Science Project Experiment (Multi-Colored - 5 Color)

(100 Pcs) MCIGICM 5mm LED Light Diodes, LED Circuit Assorted Kit for Science Project Experiment (Multi-Colored - 5 Color)

Product ID: 417776897

Details

Brand
MCIGICM
Light Type
LED
Special Feature
Not Dimmable
Light Colour
multicolor
Net Quantity
100.00 count
Shape
round

⚡20mA max current

💡3V forward voltage

🔴5 vibrant colors

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Description

💡 Light up your innovation with every color of possibility!

DIY ESSENTIAL KIT - Ideal for school experiments, electronics, and signal indicators
COMPACT VERSATILE - Round head design perfect for DIY, science, and decor
COLOR YOUR CREATIVITY - 100 multi-hued 5mm LEDs to light up every project
POWER PACKED PRECISION - Optimized 3V-3.2V forward voltage for consistent brightness
RELIABLE CURRENT CONTROL - Max 20mA ensures safe, long-lasting illumination

This MCIGICM kit includes 100 assorted 5mm LED diodes in five vibrant colors (white, red, green, blue, yellow), each designed with a round head and optimized forward voltage (2-3.2V) and max current of 20mA. Perfect for DIY electronics, science projects, and decorative lighting, these reliable LEDs offer consistent brightness and versatility for indoor use.

Specifications

ASIN	B07PG84V17
Accepted Voltage Frequency	220 to 240 Volts and 50 Hertz
Additional Features	Not Dimmable
Best Sellers Rank	#81,665 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #458 in Diodes
Brand	MCIGICM
Brand Name	MCIGICM
Bulb Base	E26
Control Method	App
Country of Publication	India
Customer Reviews	4.5 out of 5 stars 1,658 Reviews
Indoor Outdoor Usage	Indoor
Item Weight	0.03 Kilograms
Light Color	multicolor
Light Colour	multicolor
Light Source Type	LED
Light Type	LED
Manufacturer	MCIGICM
Material Type	copper
Net Quantity	100.00 Count
Package Quantity	1
Power Source Type	electrical
Shape	round
Special Feature	Not Dimmable
Theme	Physics
UPC	727040387167
Unit Count	100.00 Count

Reviews

K**R

Reliable Bright Low-Cost Larger LEDs

25.02.2026

A**R

Lights okay but lots didn’t work

28.12.2024

R**Y

Good little LED's

10.05.2025

O**N

Perfect for my project

17.02.2026

J**.

Bright and good value for the money

6.10.2024

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€ 7.61

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