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D Series Heatsink

D Series Heatsink
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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 • 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 Case Temp. Rise above Ambient ( C) 55 Case Temp. Rise above Ambient ( C) Thermal Resistance from Mounting Surface to Ambient ( C/watts) 4 6 8 Heat Dissipated (watts) 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. Thermal Resistance from Mounting Surface to Ambient ( C/watts) 4 6 8 Heat Dissipated (watts) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

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THERMAL MANAGEMENT RoHS Compliant Series Finish D A = black anodized V = degreased Tape & Reel Length 1 = 0.50" 2, 3, 4 = optional lengths assigned sequentially on customer request Standard part numbers For D Series ø D0 Removable Kapton tape on each part facilitates handling by automatic pick and place equipment. Style 10 tape and reel only. Part Number pack, pack, pack, pack, degreased black anodized degreased black anodized Bulk Bulk Reel Reel pack, pack, pack, pack, degreased black anodized degreased black anodized Bulk Bulk Reel Reel 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax...

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