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LED 3W Deep Red 650-670nm (10-Pack)

LED 3W Deep Red 650-670nm (10-Pack)

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These 3W LEDs have a color spectrum of 650-670nm which is considered deep red.

DESCRIPTION

These 3W LEDs have a color spectrum of 650-670nm which is considered deep red.LED Deep Red Graphic

PACKAGE INCLUDES:

  • Qty 10 – LED 3W Red 650-670nm

KEY FEATURES OF LED 3W RED 650-670NM:

  • 650-670nm wavelength which is deep red
  • ± 60° viewing angle
  • 700mA max drive current
  • Bridgelux or Epistar LED chips

These LEDs are popular for DIY projects for illuminating plants or anywhere that a deep red color is desired.

Calculating LED Resistor Values

Calculating LED Resistor Values

These LEDs are primarily designed to be used with a constant current LED driver like the Meanwell LDD-700 but can be driven off other circuits that have some form of current limiting to avoid damage to the LEDs or the driving source.

For experimentation, the device can be driven at lower brightness directly off the pins of an MCU with a suitable current limiting series resistor.

Color Max Power Wavelength Max Forward Current Forward Voltage Luminous Flux LED Chip Size
Red 3W 650-670nm 600-700mA 2.0 – 2.4V 60-70 42mil

The LEDs can get quite hot when driven at full power.  For high power applications, the LEDs should be placed on a suitable heat sink with thermal paste to avoid possible overheating.

Most LED 3W with Aluminum Basecommonly, these individual LEDs are soldered to an aluminum star type heat sink which is then mounted to a larger piece of aluminum or larger heat sink assembly.  Point-to-point wiring can then be used to connect the LEDs.

When soldering the LED to the star board, it is critical to use thermal paste between the body of the LED and the center pad on the star board.  This is to ensure efficient heat transfer from the LED to the star board.  If using hot air or a hot plate to reflow the solder to mount the LED, it is possible to use solder paste under the LED to solder the LED to the center pad rather than using thermal paste.  The solder provides ideal thermal coupling.

The LEDs are typically wired in a serial chain powered by a constant current LED driver which can be PWM controlled to adjust LED brightness.  The driver output voltage must be large enough to account for the voltage drop across all the LEDs in the chain.

Notes:

  1. None

TECHNICAL SPECIFICATIONS

Type Single Color
Color Deep Red 650-670nm
Lens Shape Circular
Dimensions (lens only) 5.9 x 5.9 x 2.8mm
Appearance Clear
Power Maximum 3W
Viewing Angle To Half Brightness ± 60 Degrees
Maximum Ratings
IF Maximum Forward Current 700mA
VF Maximum Forward Voltage 2.0 – 2.4V
Package Type Plastic body, 2-lead, SMD
Package Dimensions Diagonal x lead-to-lead x height 8mm x 14.5mm x 5.3mm
Mfr LED wafers Epistar or Bridgelux
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