LED, 1/2 Watt

LED, 1/2 Watt
Our Price: $1.10 - $1.50

Qty Discounts

0 - 4$1.50
5 - 9$1.25

High flux LEDs are very popular right now and for good reason. They are not only incredibly bright, but they are highly efficient – more efficient than even compact fluorescent bulbs. They have a downside however – they are expensive. The typical 1 watt white LED costs in the neighborhood of $4 each! Not only that, but they have to be mounted on a special aluminum clad PCB in order to get the heat out.

I don’t know about you, but both of these issues throw a real damper on things. We have the solution for both of these problems – half watt LEDs from Optek. These things are a well kept secret and difficult to find.

They cost less than half of what 1 watt LEDs cost (per watt) and their size is in the sweet spot where you can mount them on an ordinary PCB and still get the heat out. Anything higher power and you must use special aluminum clad PCBs. Don’t be taken in by all the hype over higher power LEDs. Unless you are designing a flashlight requiring just one LED for focusing, you can get the same brightness without the heat and expense.

For the white and warm white devices, you can expect about 80 lumens per watt of power input. These things are really bright. You won’t want to stare directly at them!

While they are surface mount devices, they come in a reasonable 3.5mm size. You will need to consult the datasheet for footprint information. We have found that as long as you provide one square inch of pad per device on both sides, you will have adequate thermal conductivity. Connect these two large pads together with vias and connect them to the anode of the device.


  • Package: SMD 3.5 x 3.5mm
  • Colors: red, yellow, blue, white and warm white
  • Forward current: 175mA
  • Luminous flux (white & warm white): 30-40 lumens
  • Datasheet: click here

LED, 1/2 Watt by Provide Your Own is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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