Ohmite Manufacturing (Arlington Heights, IL) has introduced Wakefield Solutions’ 19000 Series radial-fin heat sink extrusions for LED light engines. Options range from a maximum 14.7°C rise for a 4.5 watt power rating to a maximum 29.2°C rise for a 42.8 watt power rating. All models do not exceed a maximum LED substrate temperature of 75°C, and are available in multiple sizes, weights, and thermal resistances.

Heat sink lengths range from 2 inches (50.8 millimeters) to 10 inches (190.5 millimeters), with diameters of 1.26 inches (32 millimeters) to 4.51 inches (115 millimeters), while the heat sink weights range from 0.2 pounds (92 grams) to 2.64 pounds (1199 grams). Available powers include 42.8, 26.3, 9, 4.5, and 24 watts, with corresponding thermal resistances of 0.68, 1.15, 2.38, 3.27, and 1.15 C/W.

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Lighting Technology Magazine

This article first appeared in the November, 2012 issue of Lighting Technology Magazine.

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