89-27 ACCESS ROAD, NORWOOD, MA 02062 USA | T: 781.769. 2800 F: 781.769.9979 | WWW.QATS.COM R2_0912 LED Lighting DESIGN SERVICES: LED A global LED manufacturer approached ATS for help cooling an LED that was overheating. Their current heat sink, designed for a 6W LED in a vertical orientation, had a thermal resistance (R Hs ) of 9°C/W and a maximum heat sink temperature rise (?T hs-a ) of 64°C at ambient temperature. ATS analyzed the co

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