Patented Heat Spreader Technology
Junction temperature is the temperature at the point where an individual diode connects to its base. Maintaining a low junction temperature increases output and slows LED lumen depreciation. Junction temperature is a key metric for evaluating an LED product’s quality and longevity.
The three things affecting junction temperature are: drive current, thermal path, and ambient temperature. In general, the higher the drive current, the greater the heat generated at the diode. Heat must be moved away from the diode in order to maintain expected light output, life, and color.
The amount of heat that can be removed depends upon the ambient temperature and the design of the thermal path from the diode to the surroundings. (Source: DOE)
The U.S. Department of Energy (DOE) advises: “Heat management and an awareness of the operating environment are critical considerations to the design and application of LED luminaries for general illumination. Successful products will use superior heat sink designs to dissipate heat and minimize junction temperature. Keeping the junction temperature as low as possible and within the manufacturer specifications is necessary in order to maximize the performance potential of LEDs.”
Benefits of Heat Spreader™ Technology
LED chips emit light after wired with power. About 75% of the electric power is turned into heat energy. In LED fixtures commonly used today, this heat energy is trapped in the fixture itself, limiting the LED’s performance and lifespan.
Heat Spreader™ technology moves the heat energy away from the LEDs, providing extended longevity and lumen output. The heat energy from the LED is transferred to the heat sink, instigating the Heat Spreader™ process.” The temperature drop through this is about 1 degree C which is transferred through the back of the LED and solder of the heat sink.