MPC21 – Malico Inc. Home » Passive Heat Sink » MPC Series » MPC21 – Malico Inc. :: MPC21 :: Dimension Model No. L x W (mm) Height (mm) Weight (grams) CAD MPC 21-12 21 x 21 11.6 14.9 By request MPC 21-15 21 x 21 14.6 16.6 By request MPC 21-18 21 x 21 17.6 18.3 By request MPC 21-21 21 x 21 20.6 20.0 By request MPC 21-23 21 x 21 22.6 21.1 By request MPC 21-28 21 x 21 27.6 24.0 By request MPC 21-33 21 x 21 32.6 26.8 By request Material : Copper 1100 Finish : Anti-Oxidation Remarks : Model number MPC21-12 indicate 21x21mm 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) MPC 21-12 5.63 3.98 3.38 MPC 21-15 5.35 3.73 3.11 MPC 21-18 5.07 3.44 2.84 MPC 21-21 4.79 3.22 2.63 MPC 21-23 4.50 3.00 2.50 MPC 21-28 4.11 2.74 2.26 MPC 21-33 3.81 2.55 2.09