[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-564971-105":53,"doc-detail-564971-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","metal-film-fixed-resistors-mcmf0w4-series-specifications","Metal Film Fixed Resistors - MCMF0W4 Series - Specifications","","Metal Film Fixed Resistors MCMF0W4 Series specification sheet covering construction, dimensions in millimetres, and allowable exposure of welding points and terminals. It lists power rating, maximum working and overload voltages, dielectric withstand voltage, operating and ambient temperature ranges, and resistance tolerance and range. It further defines voltage rating formulas, nominal resistance per E-96 series, marking with color coding per JIS C 0802, and detailed characteristics with corresponding test methods such as DC resistance, temperature coefficient, overloads, insulation, soldering heat, solderability, solvent resistance, and temperature cycling.",{"@graph":63,"@context":122},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/metal-film-fixed-resistors-mcmf0w4-series-specifications/564971/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/metal-film-fixed-resistors-mcmf0w4-series-specifications/564971.png","ImageObject",442,249,{"name":88,"@type":89},"eBook King","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-19","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114,118],{"name":105,"@type":106,"acceptedAnswer":107},"What are the key construction elements of the MCMF0W4 metal film fixed resistors?","Question",{"text":108,"@type":109},"The document specifies a rod type ceramic basic body, a metal film resistance layer, steel (tin plated iron) end caps, annealed copper leads coated with tin, welded joints, epoxy insulated resin coating (sky blue), and epoxy resin color code.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What are the main electrical ratings and operating conditions?",{"text":113,"@type":109},"Rated power is 0.25 W at 70°C, with maximum working voltage 250 V and maximum overload voltage 500 V. The rated ambient temperature is 70°C, with operating temperature range -55°C to +155°C, and resistance tolerance of ±0.5% over a range of 10 Ω to 1 MΩ.",{"name":115,"@type":106,"acceptedAnswer":116},"How is the rated DC or RMS AC continuous working voltage determined?",{"text":117,"@type":109},"It is based on the relationship RCWV = √(P·R), where RCWV is the rated DC or RMS AC continuous working voltage at commercial-line frequency and waveform, P is the power rating, and R is the nominal resistance in ohms, with a limit not exceeding the applicable maximum value.",{"name":119,"@type":106,"acceptedAnswer":120},"Which reliability tests are listed for this series?",{"text":121,"@type":109},"The sheet includes DC resistance measurement, temperature coefficient evaluation, short-time overload, dielectric withstand voltage, pulse overload, terminal strength, resistance to soldering heat, solderability, resistance to solvent, temperature cycling, and load life in humidity and under load with defined limits and test conditions.","https://schema.org",{"og:url":78,"og:type":124,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":126,"canonical":78},"index,follow",{"doc_id":128,"site_id":56},564971,1792382410,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":88,"user_avatar":133,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":73,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":47,"language":139,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":61,"update_tm":143,"read_time":73},962088006270,"https://ap-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45","Metal Film Fixed Resistors  \nMCMF0W4 Series  \nConstruction:  \nDimensions:  \n\n| No. | Name | Material |\n| --- | --- | --- |\n| 1 | Basic Body | Rod type ceramics |\n| 2 | Resistance Film | Metal film |\n| 3 | End Cap | Steel (tin plated iron surface) |\n| 4 | Lead Wire | Annealed copper wire coated with tin |\n| 5 | Joint | By welding |\n| 6 | Coating | Epoxy insulated resin (colour : sky blue) |\n| 7 | Colour Code | Epoxy resin |\n\n| Type | Power Rating | D (Maximum) | L (Maximum) | d ±0.05 | H ±3 |\n| --- | --- | --- | --- | --- | --- |\n| MF | 1/4 W | 2.5 | 6.8 | 0.54 | 28 |\n\nDimensions : Millimetres  \nPainting Method:  \nWelding point, terminal and lead wire, is permissible to be exposed without the outer coated cover. The extent should be within 1/2 of the are angle  \nD = Resistor body diameter  \n[www.element14.com](www.element14.com)[ ](www.element14.com)[www.farnell.com](www.farnell.com)[ ](www.farnell.com)[www.newark.com](www.newark.com)  \nMetal Film Fixed Resistors  \nMCMF0W4 Series  \nRatings:  \n\n| Type | MF |\n| --- | --- |\n| Rated Power | 0.25 Ω at 70􀂰C |\n| Maximum Working Voltage | 250 V |\n| Maximum Overload Voltage | 500 V |\n| Dielectric Withstanding Voltage | 500 V |\n| Rated Ambient Temperature | 70􀂰C |\n| Operating Temperature Range | -55 Ω to + 155 Ω |\n| Resistance Tolerance | ±0.5% |\n| Resistance Range | 10 Ω to 1 MΩ |\n\nPower Rating and Dimensions  \nResistors shall have a power rating based on continuous full load operation at an ambient temperature of 70􀂰C. For temperature in excess of 70􀂰C , the load shall be derated.  \nPercent rated load (%)  \nAmbient temperature (􀂰C)  \nVoltage Rating:  \nResistors shall have a rated direct-current (DC) continuous working voltage or an approximate sine-wave root-mean-square (RMS) alternating-current (AC) continuous working voltage at commercialline frequency and waveform curresponding to the power rating, as determined from the following formula :  \nRCWV = √P 􀃗 R  \nWhere : RCWV = Rated DC or RMS AC continuous working voltage at commercial-line frequency and waveform (V)  \nP = Power rating (W)  \nR = Nominal resistance (ohm)  \nIn no case shall the rated DC or RMS AC continuous working voltage be greater than the applicable maximum value  \nNominal Resistance:  \nEffective figures of nominal resistance shall be in accordance with E-96 series, and resistance tolerance  \nMarking:  \nResistor :  \nResistors shall be marked with color coding colors shall be  \nin accordance with JIS C 0802 1st significant figure  \n2nd significant figure 3rd significant figure  \nMultiplier Tolerance  \n[www.element14.com](www.element14.com)[ ](www.element14.com)[www.farnell.com](www.farnell.com)[ ](www.farnell.com)[www.newark.com](www.newark.com)  \nMetal Film Fixed Resistors  \nMCMF0W4 Series  \n| Characteristics | Limits | Test Methods (JIS C 5201-1) |\n| --- | --- | --- |\n| DC resistance | Must be within the specified tolerance | The limit of error of measuring apparatus shall not exceed allowable range or 0.5% of resistance tolerance |\n| Temperature Coefficient | Within the temperature coefficient specified\u003Cbr>below : ±50PPM/􀂰C maximum | Natural resistance change per temperature degree centigrade\u003Cbr>R2-R1 / R1 (t2-t1) 􀃗 106 (PPM / 􀂰C)\u003Cbr>R1 : Resistance value at room temperature (t1)\u003Cbr>R2 : Resistance value at room temperature plus 100􀂰C (t2) |\n| Short Time Overload | Resistance change rate is ±(0 .5% + 0.05 Ω) maximum with no evidence of mechanical damage | Permanent resistance change after the application of a potential of 2.5 times RCWV for 5 s |\n| Dielectric withstanding voltage | No evidence of flashover mechanical damage, arcing or insulation breakdown | Resistors shall be clamped in the trough of a 90􀂰 metallic V-block and shall be tested at AC potential respectively |\n| Pulse Overload | Resistance change rate is ±(1% + 0.05 Ω) maximum with no evidence of mechanical damage | Resistance change after 10,000 cycles 1 second \"on\", 25 seconds \"off\" at 4 times RCWV |\n| Terminal Strength | No evidence of mechanical dam","cbCail5shdeatuLp","https://ap.wps.com/l/cbCail5shdeatuLp","pdf",242910,"English","# Construction and Dimensions\n## Ratings\n## Power Rating and Dimensions\n## Voltage Rating\n## Nominal Resistance and Marking\n## Electrical and Reliability Characteristics","[{\"question\":\"What are the key construction elements of the MCMF0W4 metal film fixed resistors?\",\"answer\":\"The document specifies a rod type ceramic basic body, a metal film resistance layer, steel (tin plated iron) end caps, annealed copper leads coated with tin, welded joints, epoxy insulated resin coating (sky blue), and epoxy resin color code.\"},{\"question\":\"What are the main electrical ratings and operating conditions?\",\"answer\":\"Rated power is 0.25 W at 70°C, with maximum working voltage 250 V and maximum overload voltage 500 V. The rated ambient temperature is 70°C, with operating temperature range -55°C to +155°C, and resistance tolerance of ±0.5% over a range of 10 Ω to 1 MΩ.\"},{\"question\":\"How is the rated DC or RMS AC continuous working voltage determined?\",\"answer\":\"It is based on the relationship RCWV = √(P·R), where RCWV is the rated DC or RMS AC continuous working voltage at commercial-line frequency and waveform, P is the power rating, and R is the nominal resistance in ohms, with a limit not exceeding the applicable maximum value.\"},{\"question\":\"Which reliability tests are listed for this series?\",\"answer\":\"The sheet includes DC resistance measurement, temperature coefficient evaluation, short-time overload, dielectric withstand voltage, pulse overload, terminal strength, resistance to soldering heat, solderability, resistance to solvent, temperature cycling, and load life in humidity and under load with defined limits and test conditions.\"}]","Metal Film Fixed Resistors - MCMF0W4 Series - Specifications | PDF",1791845446]