MPCA31 – Malico Inc. Home » Heat Sink with Talon Clip » MPCA Series » MPCA31 – Malico Inc. :: MPCA31 :: Dimension Model No. Height (mm) Thickness (mm) Weight (grams) CAD Attachment MPCA 31-12 11.6 2.6 34.1 By request Clip , Tape MPCA 31-15 14.6 2.6 37.5 By request Clip , Tape MPCA 31-18 17.6 2.6 40.9 By request Clip , Tape MPCA 31-21 20.6 2.6 44.3 By request Clip , Tape MPCA 31-23 22.6 2.6 46.5 By request Clip , Tape MPCA 31-28 27.6 2.6 52.2 By request Clip , Tape MPCA 31-33 32.6 2.6 57.9 By request Clip , Tape Material : Copper 1100 Finish : Anti-Oxidation Remarks : Model number MPCA31-12 indicate 31x31mm 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 31-12 3.55 2.39 1.80 MPCA 31-15 3.31 2.16 1.54 MPCA 31-18 3.06 1.94 1.37 MPCA 31-21 2.85 1.77 1.21 MPCA 31-23 2.60 1.61 1.07 MPCA 31-28 2.42 1.45 0.95 MPCA 31-33 2.22 1.26 0.83