MW23 – Malico Inc. Home » Passive Heat Sink » MW Series » MW23 – Malico Inc. :: MW23 :: Dimension Model No. L x W (mm) Height (mm) Weight (grams) CAD MW 23-12 23 x 23 11.6 5.7 By request MW 23-15 23 x 23 12.6 6.4 By request MW 23-18 23 x 23 17.6 7.2 By request MW 23-21 23 x 23 20.6 8.0 By request MW 23-23 23 x 23 22.6 8.7 By request MW 23-28 23 x 23 27.6 9.7 By request MW 23-33 23 x 23 32.6 11.0 By request Material : Aluminum 6063 Finish : Black anodize Remarks : Model number MW23-12 indicate 23x23mm 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) MW 23-12 4.56 3.20 2.72 MW 23-15 4.22 2.94 2.46 MW 23-18 3.92 2.71 2.25 MW 23-21 3.69 2.49 2.06 MW 23-23 3.45 2.32 1.92 MW 23-28 3.10 2.10 1.75 MW 23-33 2.82 1.89 1.60