MP40 – Malico Inc. Home » Passive Heat Sink » MP Series » MP40 – Malico Inc. :: MP40 :: Dimension Model No. L x W (mm) Height (mm) Weight (grams) CAD MP 40-12 40 x 40 11.6 18.3 By request MP 40-15 40 x 40 14.6 20.6 By request MP 40-18 40 x 40 17.6 23.0 By request MP 40-21 40 x 40 20.6 25.4 By request MP 40-23 40 x 40 22.6 27.0 By request MP 40-28 40 x 40 27.6 30.9 By request MP 40-33 40 x 40 32.6 34.9 By request Material : Aluminum 6063 Finish : Black anodize Remarks : Model number MP40-12 indicate 40x40mm is package footprint and 12 mm is overall height , all the dimensions are in arithmetic , the drawing overall height is real dimension :: Rth ( oC/W ) :: Air Velocity / Rth ( oC/W ) 200(LFM) 400(LFM) 600(LFM) MP 40-12 2.96 1.92 1.39 MP 40-15 2.76 1.70 1.21 MP 40-18 2.50 1.49 1.01 MP 40-21 2.30 1.32 0.89 MP 40-23 2.09 1.18 0.75 MP 40-28 1.85 1.05 0.64 MP 40-33 1.65 0.88 0.52