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300pcs 3mm and 5mm LED Assortment Kit

The YXT020 300pcs LED Assortment Kit is a handy LED set for electronics projects, school activities, Arduino builds, repairs, and basic circuit testing. It includes both 3mm and 5mm LEDs in common colors, packed in a plastic storage box for easy sorting.

This kit is useful for makers, students, hobbyists, and technicians who need assorted LEDs for prototypes, breadboard tests, indicator lights, displays, and low-voltage circuit projects.

Why Choose This LED Kit?

  • Includes 300 assorted LEDs for project use.
  • Comes with both 3mm and 5mm LED sizes.
  • Includes common colors for circuit testing and indicators.
  • Good for Arduino, Raspberry Pi, breadboard, and DIY electronics projects.
  • Packed in a plastic storage box for easier organization.
  • Useful for school labs, repair kits, and workbench stock.

Common Applications

  • Arduino LED projects
  • Breadboard circuit testing
  • Indicator light projects
  • Basic electronics lessons
  • DIY repair work
  • Low-voltage display projects
  • STEM and school activities
  • Prototype and module testing

What’s Included?

This kit includes 300 LEDs in 3mm and 5mm sizes.

  • 3mm White LED - 40 pcs
  • 3mm Green LED - 40 pcs
  • 3mm Blue LED - 40 pcs
  • 3mm Red LED - 40 pcs
  • 3mm Yellow LED - 40 pcs
  • 5mm White LED - 20 pcs
  • 5mm Green LED - 20 pcs
  • 5mm Blue LED - 20 pcs
  • 5mm Red LED - 20 pcs
  • 5mm Yellow LED - 20 pcs
  • Plastic storage box - 1 pc

Note: Resistors are not included. Use the correct current-limiting resistor for each LED to help prevent damage.

Technical Specifications

Product Type LED assortment kit
Model / Item Code YXT020
Total Quantity 300 pcs
LED Sizes 3mm and 5mm
Colors Included White, green, blue, red, and yellow
Listed Voltage 2.0V to 2.5V DC
Listed Current 10mA to 20mA
Storage Plastic storage box
Best For Arduino projects, breadboard testing, school labs, repairs, and DIY electronics

Usage Notes

Always connect an LED with a proper current-limiting resistor. Direct connection to a power source may burn out the LED.

LED polarity matters. The longer leg is usually positive, while the shorter leg is usually negative. Check polarity before powering your circuit.

Recommended Add-ons

FAQ

How many LEDs are included?

The kit includes 300 assorted LEDs.

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What LED sizes are included?

The kit includes both 3mm and 5mm LEDs.

What colors are included?

It includes white, green, blue, red, and yellow LEDs.

Can I use this with Arduino?

Yes. These LEDs are useful for Arduino output projects and breadboard tests.

Do I need resistors?

Yes. Use a current-limiting resistor to help protect each LED.

Build with this board

// from learn.circuit.rocks

Notes from the bench

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Ask the community

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