5mm LED Assorted Pack

Build, test and prototype faster with this 5mm LED Assorted Pack, a convenient collection of standard through-hole light emitting diodes for everyday electronics work. The pack contains 50 pieces of 5mm round LEDs in assorted colours, typically 10 each of White, Red, Green, Blue and Yellow. These LEDs are widely used as visual indicators because they are compact, low power, inexpensive and compatible with simple digital output circuits when used with the correct series resistor. A 5mm LED works by emitting light when current flows in the forward direction through its semiconductor junction. The longer lead is usually the anode (+) and the shorter lead is the cathode (-); the flat edge on the LED body also normally marks the cathode. Forward voltage depends on colour: red and yellow LEDs generally need a lower voltage, while blue and white LEDs typically need around 3.0V to 3.4V. For safe operation, always use a current-limiting resistor or a regulated LED driver, especially when connecting to 5V Arduino, 3.3V microcontroller boards, batteries or bench power supplies. This assorted LED kit is ideal for breadboard learning, school and college electronics labs, STEM kits, Arduino and Raspberry Pi GPIO indication, DIY toys, decorative lighting, electronic repair, continuity testers, control panels, model railways and display prototypes. The 5mm through-hole package is easy to insert into PCBs and perfboards, and the visible dome lens makes it suitable for front-panel mounting where a clear status indication is required. What is in the box: 50 x 5mm round through-hole LEDs in assorted colours, generally 10 each White, Red, Green, Blue and Yellow. Exact brightness, tint, lens finish and forward voltage may vary slightly by manufacturing batch, so verify polarity and resistor value before final assembly.