100-Pack 3mm/5mm Round LEDs for DIY Electronics

$4.99 $7.99

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3mm Box
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Why it works

Keep a practical batch of round LEDs ready for indicators, breadboards, PCB experiments and everyday electronics builds.

A 100-piece LED pack with 3 mm and 5 mm options, approximately 18 mm pins and package choices for prototyping and indicator projects.

Key benefits

Why you will keep it within reach

Keep more LEDs ready at the bench

A 100-piece pack reduces the need to stop a project because a common indicator LED has run out.

Choose the size that fits the layout

3 mm and 5 mm options give you flexibility for compact boards, indicators and larger visible projects.

Useful across common electronics jobs

Use compatible LEDs for breadboard testing, PCB circuits, indicator lights and DIY electronics builds.

Pick a storage format that works for you

Box and bag options let you choose a package style that better fits your parts drawer, bench or project kit.

Details that matter

Product details

Keep Common Indicator LEDs Ready for Your Next Build

This 100-piece round LED pack is made for breadboard experiments, PCB projects, indicator lights and general electronics work. Choose a 3 mm or 5 mm package option depending on the space and appearance your project needs, so you can keep a useful batch of components ready at the bench.

Match the Electrical Setup to the LED Color

The LEDs have approximately 18 mm pins and are designed for 20 mA operation. Forward voltage varies by color: red and yellow use 1.8–2.3 V, while blue, green and white use 2.8–3.6 V. Use an appropriate current-limiting resistor and confirm polarity before powering the circuit.

  • 100-piece quantity reduces frequent component reordering
  • 3 mm and 5 mm options fit different project layouts
  • Useful for indicators, breadboards, PCB work and DIY electronics
  • Box or bag package options suit different storage preferences

How it works

Simple by design

Choose the LED size and package

Select the 3 mm or 5 mm option and the available box or bag format.

Match the circuit to the LED

Use an appropriate current-limiting resistor and confirm the forward-voltage requirement for the LED color in your circuit.

Install with the correct polarity

Place the LED into a compatible circuit, confirm polarity and operate it within suitable electrical limits.

The specifics

Product details

Quantity
100 pieces
Component type
Round LED
Size options
3 mm and 5 mm
Pin length
Approx. 18 mm
Operating current
20 mA
Red/Yellow forward voltage
1.8–2.3 V
Blue/Green/White forward voltage
2.8–3.6 V
Applications
Indicators, breadboards, PCB circuits and DIY electronics
Package options
3 mm box, 5 mm bag, 5 mm box

Buying from ByOurielle

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FAQ

Good to know before you order

How many LEDs are included?
The product is sold as a 100-piece LED pack.
Which sizes can I choose?
The available package sizes are 3 mm and 5 mm.
Can I use them for breadboard or PCB projects?
Yes. They are intended for common electronics work such as breadboards, PCB circuits and indicator-light projects when wired correctly.
Do all LED colors use the same voltage?
No. Forward voltage varies by LED color, so choose the correct resistor and power conditions for the LED you are using.