Resistors Resistors Resistors Heatsink for WMHP Series Heatsink for WMHP Series Heatsink for WMHP Series High Power Resistors High Power Resistors High Power Resistors WMHP-HS Series Clear mounting WMHP-HS Series hole WMHP-HS Series For TO-220 and TO-247 packages Clear mounting hole For TO-220 and TO-247 packages Ideal for use with WMHP series power resistors For TO-220 and TO-247 packages IdReidgal feod fr uinsse f worit hih WghMerH sPur sfearicee as preoaw weir reth losiwst morsas s Ideal for use with WMHP series power resistors Ridged fins for higher surface area with low mass Low thermal resistance Ridged fins for higher surface area with low mass Low thermal resistance Black anodized finish Low thermal resistance Solderable pins for robust PCB mounting Black anodized finish Black anodised finish Solderable pins for robust PCB mounting Solde rable pins for robust PCB mounting All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) Functional Data Functional Data Functional Data WMHP-HS-25 WMHP-HS-25 WMHP-HS-25 Height mm 25.4 Height mm 25.4 Height mm 25.4 Compati bl e package type TO-220, TO-247 Compatible package type TO-220, TO-247 Compati bl e package type TO-220, TO-247 Compatible resistors WMHP20, WMHP35, WMHP50, WMHP100 Compatible resistors WMHP20, WMHP35, WMHP50, WMHP100 Compatible resistors 2 WMHP20, WMHP35, WMHP50, WMHP100 2 Surface area mm 10,155 Surface area mm 10,155 2 Surface area mm 10,155 WWeieighghtt gg 22.722.7 Weight g 22.7 Thermal resistance, forced air 5m/s C/W 0.5 Thermal resistance, forced air 5m/s C/W 0.5 Thermal resistance, forced air 5m/s C/W 0.5 Physical Data Physical Data Physical Data Di mensi ons (mm) Dimensions (mm) Di mensi ons (mm) H H Type Type nom nom H Type nom WMHP-HS-25 25.4 WMHP-HS-25 25.4 WMHP-HS-25 25.4 Construction Construction Construction The heatsink is extruded from 6063-T5 aluminium cut to length, drilled and then black anodised. Two 2.3mm The heatsink is extruded from 6063-T5 aluminium cut to length, drilled and then black anodised. Two 2.3mm The heatsink is extruded from 6063-T5 aluminium cut to length, drilled and then black anodised. Two 2.3mm diameter brass pins with 100% tin finish are interference fitted. diameter brass pins with 100% tin finish are interference ed.fitt diameter brass pins with 100% tin finish are interference fitted. General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronics.com/resistors 09.17 TT Electronics plc 09.17 09.17 HeatHeasink fortsink for WM WMHP SeriHP Series High Powes High Power Reser Ristesoris st ors Heatsink for WMHP Series High Power Resistors WMHP-HS Series WMHP-HS Series WMHP-HS Series TheThrmaerlma Perl fPormerformancean Dceat Da ata Thermal Performance - Data Duct toD uct to MountiMngo Suruntfiacnge Sur Tefmacpee Tratemurpee rature MountiMngo Suruntfiacnge Sur Tefmacpee Tratemurpee rature constrai cn onstrain Probe PPoinrobt e Point Probe PPoinrobt e Point airflow airflow UP UP UP UP TheseT dhatesa ere datlata ere tolat a stane to ad stanard hdearatds hinek attessint k contesdt iticonond ition TheseT dhatesa ere datlata ere tolat a ne toorm a nalo aprmpallic apatiponlic coatinondi cotionnd ition with uwinothb sutrunocted fbstruicted fns anidn ds uancted d duaicted rflowai,rfl and aow, arend a re with fiwnisth o fibsntrus octbsetrud bcty aed P bCBy a a PndCB no andn-d noucted ain-ducted airflow,rfl ow, included for comparison purposes. and maanyd b mae uys ebde for usepdra for ctipcalra ctithecalrm thale drmesalign. de sign. included for comparison purposes. 09.17 09.17 General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronics.com/resistors TT Electronics plc 09.17