Product Description: KNOWLES / CORNELL DUBILIER WMF4P1K-F Film Capacitor
The KNOWLES / CORNELL DUBILIER WMF4P1K-F is a high-quality polyester film capacitor designed for commercial and industrial applications. Featuring axial leads and a sealed outer wrapper, this capacitor offers excellent moisture resistance and reliable performance in high peak current environments.
Operating Temperature Range: –55°C to 125°C (full rated voltage at 85°C, derated linearly to 50% at 125°C)
High dV/dt capability and peak current handling
Low inductance with non-inductive wound sections
Moisture resistant with epoxy sealed ends
Specifications:
Specification
Details
Capacitance Range
0.001 to 5 µF
Capacitance Tolerance @ 1 kHz/25 ºC
±10% (Standard), Optional ±5% / ±20%
Rated Voltage
50 to 630 V DC
Insulation Resistance
30,000 MΩ x µF, Minimum 100,000 MΩ
Dissipation Factor
Maximum 0.75% at 25°C, 1 kHz
Dielectric Strength
250%
Life Test
500 hours at 85°C at 125% rated voltage
Physical Dimensions:
Construction Details
Specifications
Case Material
UL510 Polyester Tape Wrap
Resin Material
UL94V-0 Epoxy Fill
Terminal Material
Tin Plated Copper - Clad Steel
For more detailed specifications, please refer to the datasheet.
Note: All product drawings, descriptions, and specifications are subject to change. Please verify details before ordering. For additional information, visit this datasheet.
Disclaimers: All product information is provided without warranty. Customers should verify suitability for their specific applications. High-reliability applications should incorporate appropriate safeguards.
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{"id":10026840326461,"title":"WMF4P1K-F","handle":"wmf4p1k-f","description":"\u003ch3\u003eProduct Description: KNOWLES \/ CORNELL DUBILIER WMF4P1K-F Film Capacitor\u003c\/h3\u003e\n\u003cp\u003eThe KNOWLES \/ CORNELL DUBILIER WMF4P1K-F is a high-quality polyester film capacitor designed for commercial and industrial applications. Featuring axial leads and a sealed outer wrapper, this capacitor offers excellent moisture resistance and reliable performance in high peak current environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e WMF4P1K-F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e KNOWLES \/ CORNELL DUBILIER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin (COO):\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure (UOM):\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCapacitance: 0.1 µF (100 nF)\u003c\/li\u003e\n\u003cli\u003eRated Voltage: 400 V DC\u003c\/li\u003e\n\u003cli\u003eCapacitance Tolerance: ±10%\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: –55°C to 125°C (full rated voltage at 85°C, derated linearly to 50% at 125°C)\u003c\/li\u003e\n\u003cli\u003eHigh dV\/dt capability and peak current handling\u003c\/li\u003e\n\u003cli\u003eLow inductance with non-inductive wound sections\u003c\/li\u003e\n\u003cli\u003eMoisture resistant with epoxy sealed ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance Range\u003c\/td\u003e\n\u003ctd\u003e0.001 to 5 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance Tolerance @ 1 kHz\/25 ºC\u003c\/td\u003e\n\u003ctd\u003e±10% (Standard), Optional ±5% \/ ±20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e50 to 630 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e30,000 MΩ x µF, Minimum 100,000 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation Factor\u003c\/td\u003e\n\u003ctd\u003eMaximum 0.75% at 25°C, 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e250%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLife Test\u003c\/td\u003e\n\u003ctd\u003e500 hours at 85°C at 125% rated voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction Details\u003c\/th\u003e\n\u003cth\u003eSpecifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003eUL510 Polyester Tape Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResin Material\u003c\/td\u003e\n\u003ctd\u003eUL94V-0 Epoxy Fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Material\u003c\/td\u003e\n\u003ctd\u003eTin Plated Copper - Clad Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eNote: All product drawings, descriptions, and specifications are subject to change. Please verify details before ordering. For additional information, visit \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003ethis datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eDisclaimers: All product information is provided without warranty. Customers should verify suitability for their specific applications. High-reliability applications should incorporate appropriate safeguards.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-15T16:38:15+05:30","created_at":"2025-08-15T16:38:17+05:30","vendor":"Waldom Electonics","type":"Capacitors","tags":["400V","Capacitor","Film","IMPORT_CSV","IMPORT_PT2","KNOWL-CORN-COR","WLDM"],"price":75255,"price_min":75255,"price_max":75255,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50623218811197,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WMF4P1K-F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"WMF4P1K-F","public_title":null,"options":["Default Title"],"price":75255,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WMF4P1K-F","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/WMF4P1K-F_10950571_13722b52.jpg?v=1755256097"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WMF4P1K-F_10950571_13722b52.jpg?v=1755256097","options":["Title"],"media":[{"alt":null,"id":45852908126525,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WMF4P1K-F_10950571_13722b52.jpg?v=1755256097"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WMF4P1K-F_10950571_13722b52.jpg?v=1755256097","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description: KNOWLES \/ CORNELL DUBILIER WMF4P1K-F Film Capacitor\u003c\/h3\u003e\n\u003cp\u003eThe KNOWLES \/ CORNELL DUBILIER WMF4P1K-F is a high-quality polyester film capacitor designed for commercial and industrial applications. Featuring axial leads and a sealed outer wrapper, this capacitor offers excellent moisture resistance and reliable performance in high peak current environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e WMF4P1K-F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e KNOWLES \/ CORNELL DUBILIER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin (COO):\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure (UOM):\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCapacitance: 0.1 µF (100 nF)\u003c\/li\u003e\n\u003cli\u003eRated Voltage: 400 V DC\u003c\/li\u003e\n\u003cli\u003eCapacitance Tolerance: ±10%\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: –55°C to 125°C (full rated voltage at 85°C, derated linearly to 50% at 125°C)\u003c\/li\u003e\n\u003cli\u003eHigh dV\/dt capability and peak current handling\u003c\/li\u003e\n\u003cli\u003eLow inductance with non-inductive wound sections\u003c\/li\u003e\n\u003cli\u003eMoisture resistant with epoxy sealed ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance Range\u003c\/td\u003e\n\u003ctd\u003e0.001 to 5 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance Tolerance @ 1 kHz\/25 ºC\u003c\/td\u003e\n\u003ctd\u003e±10% (Standard), Optional ±5% \/ ±20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e50 to 630 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e30,000 MΩ x µF, Minimum 100,000 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation Factor\u003c\/td\u003e\n\u003ctd\u003eMaximum 0.75% at 25°C, 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e250%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLife Test\u003c\/td\u003e\n\u003ctd\u003e500 hours at 85°C at 125% rated voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction Details\u003c\/th\u003e\n\u003cth\u003eSpecifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003eUL510 Polyester Tape Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResin Material\u003c\/td\u003e\n\u003ctd\u003eUL94V-0 Epoxy Fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Material\u003c\/td\u003e\n\u003ctd\u003eTin Plated Copper - Clad Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eNote: All product drawings, descriptions, and specifications are subject to change. Please verify details before ordering. For additional information, visit \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cd\/cd-wmf4p1k-f.pdf\" target=\"_blank\"\u003ethis datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eDisclaimers: All product information is provided without warranty. Customers should verify suitability for their specific applications. High-reliability applications should incorporate appropriate safeguards.\u003c\/p\u003e\u003cbr\u003e"}
