[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-563077-105":59,"doc-detail-563077-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","aluminium-housed-wire-wound-resistors-series-wd-data-sheet","Aluminium housed wire-wound resistors series WD - Data sheet","","Aluminium housed wire-wound resistors series WD are high-quality, high-stability power resistors built for direct heat sink attachment, offering a wide resistance range from R01 to 150K and power ratings spanning 5 to 300 W. The series emphasizes excellent heat transfer with compact dimensions, good electrical stability, reliability, and mechanical rigidity, with an available non-inductive version. Electrical and mechanical specifications include tolerance options, temperature coefficient values, insulation resistance, overload and shelf-life changes, dielectric strength, and detailed standard heat-sink dimensions plus derating considerations.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/aluminium-housed-wire-wound-resistors-series-wd-data-sheet/563077/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/aluminium-housed-wire-wound-resistors-series-wd-data-sheet/563077.png","ImageObject",300,407,{"name":92,"@type":93},"MrHarris58","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-14","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the intended mounting method for the WD series resistors?","Question",{"text":112,"@type":113},"The WD series is designed for direct heat sink attachment, enabling efficient heat transfer.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What resistance and tolerance ranges are provided for the WD series?",{"text":117,"@type":113},"Resistance values span from R01 to 150K. Tolerance is ±5% for values below 1 Ω, with tighter options and ±0.25% to ±5% for values above 1 Ω depending on the requested tolerance.",{"name":119,"@type":110,"acceptedAnswer":120},"Are electrical stability and temperature behavior specified for the WD resistors?",{"text":121,"@type":113},"Yes. Temperature coefficients are listed (e.g., 60 ppm/°C for resistance values under 100 Ω and 30 ppm/°C for values above 100 Ω), along with insulation resistance and change-in-resistance limits under overload and shelf-life conditions.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},563077,1791858252,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":24},687212988360,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Aluminium housed wire-wound resistors series WD  \nData sheet  \nGeneral description  \nThe WD style is a range of high quality, high stability Aluminium housed power resistors designed for direct heat sink attachment. A wide range of resistance values is available in 5 to 300 W. Design of higher wattage resistors for special applications can be done with ease.  \nFeatures  \n• Excellent heat transfers and small dimensions  \n• Good electrical stability, reliability and mechanically very rigid  \n• Non inductive version available  \n• Values from R01 to 150K  \n• Custom terminations, mounting arrangements possible  \n• RoHS compliant  \nGeneral series characteristics  \n\n| Characteristic | Condition | Compliance |\n| --- | --- | --- |\n| Tolerance | For values less than 1 Ω | ± 5% |\n| (Tighter tolerance available on request) | For values greater than 1 Ω | ± 0.25 to ± 5% |\n| Temperature co-efficient\u003Cbr>(Lower TCR available on request) | For values less than 100 Ω For values greater than 100 Ω | 60 ppm / °C\u003Cbr>30 ppm / °C |\n| Insulation resistance | Dry / Normal | 10GΩ min |\n| Change in resistance |  |  |\n| -short time overload | 10x rated voltage für 5 sec | ± 0.5% |\n| -shelf life | After 3 years | \u003C ± 1% |\n| Incombustibility | 16x rated wattage for 5 sec | No flame |\n| Operating temperature | From-25°C to 250 °C |  |\n\nPower derating  \nPower Derating Chart  \n% Rated Power  \n0 25 50 75 100 150 200 250  \nTemp (degC)  \nWidapAG  \nCH-3185 Schmitten  \nTel.: +41 26 497 50 60  \nFax: +41 26 497 50 69  \neMail: [info@widap.ch](info@widap.ch)  \nInternet: [www.widap.ch](www.widap.ch)  \nEdition 02.14  \nE 5-2-01  \nAluminium housed wire-wound resistors series WD  \nData sheet  \nElectrical specifications  \n\n| Series | Power rating\u003Cbr>on standard\u003Cbr>heat sink\u003Cbr>@ 25 °C | Power ra\u003Cbr>ting with no\u003Cbr>heat sink\u003Cbr>@ 25°C | Resistance\u003Cbr>range | Limiting\u003Cbr>element\u003Cbr>voltage\u003Cbr>(DC / AC rms) | Dielectric\u003Cbr>strength\u003Cbr>(AC peak) | Weight\u003Cbr>approx.\u003Cbr>(g) | Standard heat sink |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  | Area\u003Cbr>(cm2) | Thickness\u003Cbr>(mm) |\n| WD5 | 10 | 5 | R01 - 10K | 160 | 1‘400 | 5 | 400 | 1 |\n| WD10 | 15 | 8 | R01 - 15K | 260 | 1‘400 | 7 | 400 | 1 |\n| WD25 | 25 | 12.5 | R01 - 35K | 550 | 2‘500 | 15 | 550 | 1 |\n| WD50 | 50 | 20 | R01 - 100K | 1‘250 | 2‘500 | 30 | 550 | 1 |\n| WD75 | 75 | 45 | R01 - 50K | 1‘400 | 5‘000 | 85 | 1‘000 | 3 |\n| WD100 | 100 | 50 | R01 - 100K | 1‘900 | 5‘000 | 115 | 1‘000 | 3 |\n| WD150 | 150 | 55 | R01 - 100K | 2‘500 | 5‘000 | 175 | 1‘000 | 3 |\n| WD200 | 200 | 50 | R01 - 50K | 1‘900 | 5‘000 | 475 | 3‘750 | 3 |\n| WD250 | 250 | 60 | R01 - 65K | 2‘200 | 5‘000 | 600 | 4‘800 | 3 |\n| WD300 | 300 | 75 | R01 - 80K | 2‘500 | 5‘000 | 700 | 5‘800 | 3 |\n\nMechanical specifications  \n\n| Series | L ± 0.5 | A max. | H | PX ± 0.3 | PX1 | PY ± 0.3 | M ± 0.5 | B max. | C max. | D |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| WD5 | 16.8 | 31 | 17 | 11.3 | - | 12.4 | 2.4 | 4.5 | 9 | 2.5 |\n| WD10 | 20.1 | 36.5 | 21 | 14.3 | - | 15.9 | 2.4 | 5.5 | 11 | 2.5 |\n| WD25 | 27.3 | 51.8 | 28 | 18.3 | - | 19.8 | 3.2 | 7.5 | 15 | 3 |\n| WD50 | 50.1 | 72.5 | 30 | 39.7 | - | 21.4 | 3.2 | 8.5 | 17 | 3 |\n| WD75 | 48.9 | 71 | 48 | 29 | - | 37.0 | 4.4 | 12 | 26 | 4 |\n| WD100 | 65.4 | 87.5 | 48 | 35 | - | 37.0 | 4.4 | 12 | 26 | 4 |\n| WD150 | 97 | 122 | 48 | 29 | 29 | 37.0 | 4.4 | 12 | 26 | 4 |\n| WD200 | 89 | 143 | 73 | 35 | - | 57.2 | 5.1 | 20.5 | 45 | 5.5 |\n| WD250 | 114 | 163 | 73 | 44.5 | - | 57.2 | 5.1 | 20.5 | 45 | 5.5 |\n| WD300 | 127 | 180 | 73 | 52 | - | 59.0 | 6.6 | 20.5 | 45 | 5.5 |\n\nWD5-50 WD75-150 WD200-300  \nWidapAG  \nCH-3185 Schmitten  \nTel.: +41 26 497 50 60  \nFax: +41 26 497 50 69  \neMail: [info@widap.ch](info@widap.ch)  \nInternet: [www.widap.ch](www.widap.ch)  \nEdition 02.14  \nE 5-2-02","cbCaieRPOVhDLTtl","https://ap.wps.com/l/cbCaieRPOVhDLTtl","pdf",395163,"English","# General description\n## Features\n## General series characteristics\n## Power derating\n## Electrical specifications\n## Mechanical specifications","[{\"question\":\"What is the intended mounting method for the WD series resistors?\",\"answer\":\"The WD series is designed for direct heat sink attachment, enabling efficient heat transfer.\"},{\"question\":\"What resistance and tolerance ranges are provided for the WD series?\",\"answer\":\"Resistance values span from R01 to 150K. Tolerance is ±5% for values below 1 Ω, with tighter options and ±0.25% to ±5% for values above 1 Ω depending on the requested tolerance.\"},{\"question\":\"Are electrical stability and temperature behavior specified for the WD resistors?\",\"answer\":\"Yes. Temperature coefficients are listed (e.g., 60 ppm/°C for resistance values under 100 Ω and 30 ppm/°C for values above 100 Ω), along with insulation resistance and change-in-resistance limits under overload and shelf-life conditions.\"}]","Aluminium housed wire-wound resistors series WD - Data sheet | PDF",1791810475]