If you received actual 3W LEDs and were to run them at 3.5V, 700 mA without a heatsink, then yes, you will sooner-rather-than-later kill them.

You have three options.

  1. Run them at a lower voltage/current.
  2. Heat sink them, perhaps improvised out of some aluminum bar stock and metal epoxy (Home Depot)
  3. Buy star PCB heat sinks and assemble them yourself.

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Oliver Smith

Oliver es un ingeniero electrónico experimentado y experto en diseño de PCB., circuitos analogicos, sistemas embebidos, y prototipos. Su profundo conocimiento abarca la captura esquemática, codificación de firmware, simulación, diseño, pruebas, y solución de problemas. Oliver se destaca en llevar proyectos desde el concepto hasta la producción en masa utilizando su talento en diseño eléctrico y su aptitud mecánica..

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