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Application Board Level Power Semiconductors  Wakefield Application Board Level Power Semiconductors  Heatsinks Application Board Level Power Semiconductors  Wakefield Heatsinks Application Board Level Power Semiconductors   Brand/Series 641 Series  Wakefield Brand/Series 641 Series  Heatsinks Brand/Series 641 Series  Wakefield Heatsinks Brand/Series 641 Series   Color Black  Wakefield Color Black  Heatsinks Color Black  Wakefield Heatsinks Color Black   Configuration Horizontal  Wakefield Configuration Horizontal  Heatsinks Configuration Horizontal  Wakefield Heatsinks Configuration Horizontal   Convection, Forced 0.9°C/W @ 250 LFM  Wakefield Convection, Forced 0.9°C/W @ 250 LFM  Heatsinks Convection, Forced 0.9°C/W @ 250 LFM  Wakefield Heatsinks Convection, Forced 0.9°C/W @ 250 LFM   Convection, Natural 36°C @ 15 W  Wakefield Convection, Natural 36°C @ 15 W  Heatsinks Convection, Natural 36°C @ 15 W  Wakefield Heatsinks Convection, Natural 36°C @ 15 W   Dimensions 4.125 x 3 in.  Wakefield Dimensions 4.125 x 3 in.  Heatsinks Dimensions 4.125 x 3 in.  Wakefield Heatsinks Dimensions 4.125 x 3 in.   Finish Black Anodized  Wakefield Finish Black Anodized  Heatsinks Finish Black Anodized  Wakefield Heatsinks Finish Black Anodized   For Use With TO-3  Wakefield For Use With TO-3  Heatsinks For Use With TO-3  Wakefield Heatsinks For Use With TO-3   Height, Above PC Board 1 in.  Wakefield Height, Above PC Board 1 in.  Heatsinks Height, Above PC Board 1 in.  Wakefield Heatsinks Height, Above PC Board 1 in.   Material Aluminum  Wakefield Material Aluminum  Heatsinks Material Aluminum  Wakefield Heatsinks Material Aluminum   Mounting Style Horizontal  Wakefield Mounting Style Horizontal  Heatsinks Mounting Style Horizontal  Wakefield Heatsinks Mounting Style Horizontal   Primary Type TO-3  Wakefield Primary Type TO-3  Heatsinks Primary Type TO-3  Wakefield Heatsinks Primary Type TO-3   Resistance, Thermal 0.9 °C/W  Wakefield Resistance, Thermal 0.9 °C/W  Heatsinks Resistance, Thermal 0.9 °C/W  Wakefield Heatsinks Resistance, Thermal 0.9 °C/W   Special Features Maximum Performance Natural Convection Heat Sink for all Metal-Case Semiconductors  Wakefield Special Features Maximum Performance Natural Convection Heat Sink for all Metal-Case Semiconductors  Heatsinks Special Features Maximum Performance Natural Convection Heat Sink for all Metal-Case Semiconductors  Wakefield Heatsinks Special Features Maximum Performance Natural Convection Heat Sink for all Metal-Case Semiconductors   Thermal Resistance 0.9 °C/W  Wakefield Thermal Resistance 0.9 °C/W  Heatsinks Thermal Resistance 0.9 °C/W  Wakefield Heatsinks Thermal Resistance 0.9 °C/W   Type Board Level  Wakefield Type Board Level  Heatsinks Type Board Level  Wakefield Heatsinks Type Board Level   Weight 131.54 g  Wakefield Weight 131.54 g  Heatsinks Weight 131.54 g  Wakefield Heatsinks Weight 131.54 g