HEATSINK D Series Ohmite D Series heatsinks provide an innovative solution for SMT compatible semiconductors and resistors. The unique design (Patent Pending) combines tin plated, solderable rods with an aluminum extruded heat sink body. These rods (or “rollers”) are mated mechanically to the heatsink by forging to reduce the thermal resistance between the heatsink body and the solderable feet. Specifically designed for use with the increasingly popular TO-252, TO-263 and TO-268 packages, the D Series affords the user superior thermal performance over the more common stamped aluminum heatsinks. By eliminating the staking joint typically used in stamped heatsinks, the resulting air gap and thermal “bottle-neck” is also eliminated, while surface area for cooling is maximized with the extruded fins of the D Series body. THERMAL MANAGEMENT Heatsink For TO-252, TO-263 and TO-268 devices F e at u r e s •Increased surface areas by 3 times therefore thermal performance up to 300% over the aluminum stamped heat sinks on markets •Light weight aluminum construction allows faster pick and place assembly reducing the manufacturing cycle time •Radius mounted “Rollers” are designed for maximizing heat transfer from the component and avoiding the thermal “bottle-neck” seen in stamped and staked heatsinks. •Available in bulk packaging or tape & reel (250 units per reel •RoHS Compliant H e a t d i ss i p a t i o n Air Velocity (ft./min.) 1000 50 14 12 50 101 & 201 45 10 40 8 35 301 6 30 Case Temp. Rise above Ambient (oC) 800 TO-252 (D) TO-263 (D2) 55 Case Temp. Rise above Ambient (oC) 600 Thermal Resistance from Mounting Surface to Ambient (oC/watts) 60 400 2 4 6 8 Heat Dissipated (watts) 400 600 800 1000 12 TO-268 (D3) 45 10 101 & 201 40 8 6 35 30 4 301 25 4 25 200 Final thermal performance is highly dependent on the thermal characteristics of the PCB. It is possible to see a 50% drop in temp rise in natural convection with a thermally improved PCB. 2 2 10 Thermal Resistance from Mounting Surface to Ambient (oC/watts) Air Velocity (ft./min.) 200 4 6 8 Heat Dissipated (watts) 10 dimensions Style 10 TO-252 (D) TO-263 (D2) TO-268 (D3) 1.02" 1.22" 25.91mm 31.0mm Style 20 0.10" 2.54mm 2 1.58" 40.2mm 0.50" 0.50" 12.7mm 12.7mm 0.50" 12.7mm 0.40" 10.16mm Style 30 1.02" 25.9mm 0.27" 6.86mm 0.48"REF 12.1mm 0.44" (11.2mm) 0.56" (14.2mm) TO-252 (D) TO-263 (D2) 0.63" (16.1mm) 0.75" (19.1mm) TO-268 (D3) 0.26" 6.6mm 0.44" 11.1mm 0.56" 14.1mm 0.46" 11.6mm 0.09" 2.3mm 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 0.26" 6.6mm 0.64" 16.2mm 0.76" 19.2mm 0.15" 3.7mm HEATSINK D Series THERMAL MANAGEMENT Heatsink For TO-252, TO-263 and TO-268 devices L a n d Pat t e r n s Land Patterns for D, D2 and D3 TO-252 (D) TO-263 (D2) TO-268 (D3) 0.62" (15.8mm) 0.35" (8.89mm) 0.44" (11.2mm) 0.64" (16.3mm) 0.56" (14.2mm) TO-263 (D2) 0.56" (14.2mm) 0.54" (13.7mm) 0.06" (1.40mm) 0.81" (20.6mm) 0.63" (16.0mm) 0.83" (21.1mm) TO-252 (D) 0.54" (13.7mm) 0.06" (1.40mm) 0.076" TO-252 (D) (1.94mm) 0.03" (0.80mm) TO-263 (D2) Ta p e a n d R e e l o r d e r i n g i n f o r m at i o n Reel diameter: 13.00” (330.00mm) 250 pcs. per K0 P1 0.03" (0.80mm) Style 10, 20 or 30 RoHS Compliant DA-T263-201E-TR P0 S0 W Series Finish D A = black anodized V = degreased Package T263 = TO-263 (or TO-252) T268 = TO-268 Tape & Reel Length 1 = 0.50" 2, 3, 4 = optional lengths assigned sequentially on customer request Standard part numbers For D Series ø D0 Style 10 Style 20 Style 30 D0 1.55mm 1.5mm 1.5mm K0 10.5mm 12.20mm 11.50mm P0 4mm 4.0mm 4.0mm P1 24mm 24mm 24.0mm S0 40.4mm 40.4mm 52.4mm W0 44mm 44mm 56mm Removable Kapton tape on each part facilitates handling by automatic pick and place equipment. Style 10 tape and reel only. 3 Part Number Description Packaging Weight DV-T263-101E DA-T263-101E DV-T263-101E-TR DA-T263-101E-TR for for for for D2 D2 D2 D2 pack, pack, pack, pack, degreased black anodized degreased black anodized Bulk Bulk Reel Reel 3.8 3.8 3.8 3.8 g g g g DV-T268-101E DA-T268-101E DV-T268-101E-TR DA-T268-101E-TR for for for for D3 D3 D3 D3 pack, pack, pack, pack, degreased black anodized degreased black anodized Bulk Bulk Reel Reel 4.1 4.1 4.1 4.1 g g g g DV-T263-201E DA-T263-201E DV-T263-201E-TR DA-T263-201E-TR for for for for D D D D D2 D2 D2 D2 DV-T268-301E DA-T268-301E DV-T268-301E-TR DA-T268-301E-TR for for for for D3 D3 D3 D3 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] or or or or pack, pack, pack, pack, pack, pack, pack, pack, degreased black anodized degreased black anodized degreased black anodized degreased black anodized Bulk Bulk Reel Reel Bulk Bulk Reel Reel