MPCA40 – Malico Inc. Home » Heat Sink with Talon Clip » MPCA Series » MPCA40 – Malico Inc. :: MPCA40 :: Dimension Model No. Height (mm) Thickness (mm) Weight (grams) CAD Attachment MPCA 40-12 11.6 2.6 62.4 By request Clip , Tape MPCA 40-15 14.6 2.6 70.0 By request Clip , Tape MPCA 40-18 17.6 2.6 77.7 By request Clip , Tape MPCA 40-21 20.6 2.6 85.4 By request Clip , Tape MPCA 40-23 22.6 2.6 90.5 By request Clip , Tape MPCA 40-28 27.6 2.6 103.4 By request Clip , Tape MPCA 40-33 32.6 2.6 116.2 By request Clip , Tape Material : Copper 1100 Finish : Anti-Oxidation Remarks : Model number MPCA40-12 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) MPCA 40-12 3.17 1.73 1.29 MPCA 40-15 2.96 1.55 1.09 MPCA 40-18 2.73 1.35 0.93 MPCA 40-21 2.49 1.20 0.79 MPCA 40-23 2.28 1.05 0.70 MPCA 40-28 2.01 0.87 0.56 MPCA 40-33 1.78 0.73 0.46