MWA31 – Malico Inc. Home » Heat Sink with Talon Clip » MWA Series » MWA31 – Malico Inc. :: MWA31 :: Dimension Model No. Height (mm) Thickness (mm) Weight (grams) CAD Attachment MWA 31-12 11.6 2.6 12.6 By request Clip , Tape MWA 31-15 14.6 2.6 13.9 By request Clip , Tape MWA 31-18 17.6 2.6 15.2 By request Clip , Tape MWA 31-21 20.6 2.6 16.6 By request Clip , Tape MWA 31-23 22.6 2.6 17.3 By request Clip , Tape MWA 31-28 27.6 2.6 19.7 By request Clip , Tape MWA 31-33 32.6 2.6 21.9 By request Clip , Tape Material : Aluminum 6063 Finish : Black anodize Remarks : Model number MWA31-12 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) MWA 31-12 3.37 2.25 1.87 MWA 31-15 3.13 2.02 1.66 MWA 31-18 2.85 1.79 1.45 MWA 31-21 2.63 1.59 1.31 MWA 31-23 2.44 1.44 1.21 MWA 31-28 2.14 1.28 1.06 MWA 31-33 1.91 1.11 0.93