> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 5mm LEDs 100pcs Pack 20x Red Green Blue Yellow White

**Type:** Product page · **SKU:** CE05103 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/5mm-leds-100-pcs-pack-20x-red-green-blue-yellow-white.html ([markdown](https://core-electronics.com.au/5mm-leds-100-pcs-pack-20x-red-green-blue-yellow-white.html.md))

This pack will equip your workspace with plenty of the most common LEDs you'll ever need. You'll have 20 LEDs in the following colors to mix into your projects; Red, Green, Yellow, Blue and White (That's 100 total).

## Pricing

- **Price:** $2.80 (inc GST) — $2.55 AUD, exc GST
- **Quantity discounts:** 10+ $2.29 (exc GST) · 50+ $2.16 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 87 today; more stock is typically available with a 8–12 day lead time.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE05103:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE05103:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The LED is arguably one of the most essential components in any maker project, from the Blink sketch and beyond. This pack will equip your workspace with plenty of the most common LEDs you'll ever need. You'll have 20 LEDs in the following colors to mix into your projects; Red, Green, Yellow, Blue and White (That's 100 total).

**Ideal for Makers** - 5mm through-hole LEDs are simply put, the most common LED you'll see in most projects. You can insert them straight into your breadboard, solder into veroboard, connect out to GPIO pins, or even mount them into a project panel as indicator lights.

**Assorted Colors** - With 5 colors to choose from, you'll have options for different uses.

**Connection and compatibility** - We find that these LEDs work well with between 2.5 - 3V at around 20mA current.

### How to use these LEDs in your project

When using LEDs the first thing you need to be aware of is that they are polarised components. Identify the Anode and Cathode legs of your LED. The quick and easy way is that the short leg is the Cathode (connected to GND/Negative). Next, you'll typically need a resistor in series to protect the LED from burning itself out. There are many creative ways to use LEDs in your projects, but this should let you hit the ground running.

We're wizards with LEDs (if we do say so), incorporating them into projects left-right and center. We wrote one of [the most comprehensive guides on LEDs that goes in-depth on all aspects of LEDs](https://core-electronics.com.au/guides/analogue-electronics/all-about-leds/). If you need any help with LEDs in your projects, we're here to help!

### Technical Specifications

- Voltage:1.8-2.2V (Red, Green, Yellow)
- Voltage:2.4-2.7V(White, Blue)
- Max current: 20mA
- Recommended current: 16-18mA
- Size: 36x5x5mm

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce5103-1.jpg)