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Keszoox

LED Red 3mm Diffused General Purpose (10-Pack)

LED Red 3mm Diffused General Purpose (10-Pack)

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3mm red LEDs with diffused lens and good brightness.

DESCRIPTION

These are general purpose space saving 3mm red LEDs with diffused lens and good brightness.

PACKAGE INCLUDES:

LED Polarity

  • Qty 10 – Red diffused 3mm LEDs

KEY FEATURES OF LED RED 3MM DIFFUSED:

  • General purpose LEDs
  • Red color (625nm wavelength nominal)
  • Space saving 3mm diameter
  • Diffused lens for wide viewing angle
  • 20mA max drive current
  • Forward voltage drop 2V

These are general purpose 3mm LEDs with diffused lens and good brightness that work well for general indicator use. Being smaller than the normal 5mm LED, they take up less room when space is at a premium.

The shorter of the two leads and flat side of the housing denotes the cathode.  Note that there is a flat surface on both sides of the housing, so you cannot use that as the cathode indication.

For size comparison, a 3mm, 5mm and 10mm LED are shown to the right.LED Size Comparison

 

The LEDs are logic compatible with a max drive current of 20mA and a forward voltage drop of 2V.

A current limiting series resistor is needed to protect the LED and/or the device being used to drive it.

At an operating voltage of 5V a series voltage dropping resistor of 150 ohms will provide max brightness.  A larger resistor of around 220- 470 ohm can be used to reduce current at a lower brightness.

Calculating LED Resistor Values

Notes: 

  1. None

TECHNICAL SPECIFICATIONS

Type Single Color
Color Red
Lens Shape Circular
Dimensions (Dia x H) 3 x 5.5mm (0.12 x 0.22″)
Appearance Diffused
Intensity Standard brightness
Viewing Angle To Half Brightness 60 Degrees
Maximum Ratings
IF Maximum Forward Current 20mA
VF Maximum Forward Voltage 2V (Typical)
Dominant Wavelength 625nm (Typical)
Package Type Plastic body, 2-lead, through hole
Mfr China

FURTHER READING

Determining LED Current Limiting Resistor Values

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