MP45 – Malico Inc. Home » Passive Heat Sink » MP Series » MP45 – Malico Inc. :: MP45 :: Dimension Model No. L x W (mm) Height (mm) Weight (grams) CAD MP 45-12 45 x 45 11.6 21.3 By request MP 45-15 45 x 45 14.6 23.6 By request MP 45-18 45 x 45 17.6 26.0 By request MP 45-21 45 x 45 20.6 28.4 By request MP 45-23 45 x 45 22.6 10.0 By request MP 45-28 45 x 45 27.6 33.9 By request MP 45-33 45 x 45 32.6 37.9 By request Material : Aluminum 6063 Finish : Black anodize Remarks : Model number MP45-12 indicate 45x45mm 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 45-12 2.73 1.62 1.14 MP 45-15 2.48 1.44 0.97 MP 45-18 2.27 1.29 0.82 MP 45-21 2.09 1.13 0.68 MP 45-23 1.88 0.99 0.57 MP 45-28 1.65 0.86 0.46 MP 45-33 1.41 0.70 0.35