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DA-T268-101E Datasheet(PDF) 1 Page - Ohmite Mfg. Co. |
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DA-T268-101E Datasheet(HTML) 1 Page - Ohmite Mfg. Co. |
1 / 2 page 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 170 D Series Heatsink For TO-252, TO-263 and TO-268 devices Heat D i SS ip ation Fea ture S •Increasedsurfaceareasby3timesthereforether- malperformanceupto300%overthealuminum stampedheatsinksonmarkets •Lightweightaluminumconstructionallowsfaster pickandplaceassemblyreducingthemanufactur- ingcycletime •Radiusmounted“Rollers”aredesignedformaxi- mizingheattransferfromthecomponentand avoidingthethermal“bottle-neck”seeninstamped andstakedheatsinks. •Availableinbulkpackagingortape&reel(250 unitsperreel •RoHSCompliant OhmiteDSeriesheatsinksprovideaninnovative solutionforSMTcompatiblesemiconductorsand resistors.Theuniquedesign(PatentPending)com- binestinplated,solderablerodswithanaluminum extrudedheatsinkbody.Theserods(or“rollers”) arematedmechanicallytotheheatsinkbyforgingto reducethethermalresistancebetweentheheatsink bodyandthesolderablefeet. Specificallydesignedforusewiththeincreasingly popularTO-252,TO-263andTO-268packages,the DSeriesaffordstheusersuperiorthermalperfor- manceoverthemorecommonstampedaluminum heatsinks.Byeliminatingthestakingjointtypically usedinstampedheatsinks,theresultingairgapand thermal“bottle-neck”isalsoeliminated,whilesur- faceareaforcoolingismaximizedwiththeextruded finsoftheDSeriesbody. Finalthermalperformance ishighlydependentonthe thermalcharacteristicsof thePCB.Itispossibletosee a50%dropintemprisein naturalconvectionwitha thermallyimprovedPCB. 800 400 600 50 Heat Dissipated (watts) 40 30 25 8 4 45 35 26 10 60 14 6 4 8 10 12 200 1000 Air Velocity (ft./min.) 55 TO-252 (D) TO-263 (D2) 101 & 201 301 Heat Dissipated (watts) 40 30 25 8 4 45 35 26 10 50 6 2 4 8 10 12 800 400 200 600 1000 Air Velocity (ft./min.) TO-268 (D3) 101 & 201 301 D imen S ion S ±0.012” / ±0.30mm 0.56" (14.2mm) 0.44" (11.2mm) 0.27" 6.86mm 0.40" 10.16mm 0.10" 2.54mm 0.50" 12.7mm TO-252 (D) TO-263 (D2) 1.02" 25.91mm TO-268 (D3) 1.22" 30.9mm TO-252 (D) TO-263 (D2) 0.76" (19.2mm) 0.64" (16.2mm) TO-268 (D3) ±0.2mm 0.50" 12.7mm 0.64" 16.2mm ±0.2 0.76" 19.2mm ±0.2 0.15" 3.7mm 0.46" 11.6mm 0.26" 6.6mm 1.02" 25.9mm 0.44" 11.1mm 0.56" 14.1mm 0.50" 12.7mm 0.48"REF 12.1mm 0.09" 2.3mm 0.26" 6.6mm Style 10 Style 30 Style 20 TO-268 (D3) 1.58" 40.2mm TO-263 (D2) 1.39" 35.2mm TO-263 (D2) 0.44" 11.2mm 0.56" 14.2mm TO-268 (D3) (continued) |
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