Product Description for WFH230L2R0K Wirewound Resistor
The OHMITE MANUFACTURING WFH230L2R0K is a high-performance wirewound resistor designed for chassis mounting applications. Engineered with advanced aluminum housed wirewound technology, this resistor offers superior thermal transfer and reliable power dissipation in demanding electronic environments.
Key Features
Power Rating: 230 Watts at 40°C base plate temperature
Resistance Range: 0.22Ω to 6.8KΩ
Resistance Tolerance: ±5%, ±10%
Temperature Coefficient: 50ppm - 150ppm (normal), 400ppm (low ohmic values)
Dielectric Strength: 2500 VAC peak
Working Voltage: 1200 VAC
Test Voltage: 6000 VAC
Construction: Aluminum housed wirewound resistor with silicone rubber and mica insulation
Mounting: Chassis mount with solder lug, wire, and “Fast-on” terminations
Custom wire lengths and multiple resistor configurations available
Electrical and Thermal Specifications
Parameter
Value
Power Dissipation
Up to 350W (dependent on heat sink temperature)
Resistance Range
0.22Ω – 6.8KΩ
Dielectric Strength
2500 VAC peak
Working Voltage
1200 VAC
Temperature Range
-40°C to 220°C (base plate temperature)
Thermal Resistance (°C/W)
R TH1: 1, R TH2: 6.8, R TH3: 0.1, R TH4: 0.3 (values vary by model)
Physical Dimensions & Mounting
Model
A (mm)
B (mm)
L (mm)
WFH230L2R0K
210
80
193
Additional Information
Designed for use with proper heatsinking; maximum base plate temperature must be monitored
Attach thermocouples to the side of the resistor's base plate for accurate temperature measurement
This product is designed for use with proper heatsinking. The maximum base plate temperature of the resistor must be monitored and kept within specified limits to ensure reliability and longevity. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.
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{"id":10014625071421,"title":"WFH230L2R0K","handle":"wfh230l2r0k","description":"\u003ch3\u003eProduct Description for WFH230L2R0K Wirewound Resistor\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e WFH230L2R0K is a high-performance wirewound resistor designed for chassis mounting applications. Engineered with advanced aluminum housed wirewound technology, this resistor offers superior thermal transfer and reliable power dissipation in demanding electronic environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Rating: 230 Watts at 40°C base plate temperature\u003c\/li\u003e\n\u003cli\u003eResistance Range: 0.22Ω to 6.8KΩ\u003c\/li\u003e\n\u003cli\u003eResistance Tolerance: ±5%, ±10%\u003c\/li\u003e\n\u003cli\u003eTemperature Coefficient: 50ppm - 150ppm (normal), 400ppm (low ohmic values)\u003c\/li\u003e\n\u003cli\u003eDielectric Strength: 2500 VAC peak\u003c\/li\u003e\n\u003cli\u003eWorking Voltage: 1200 VAC\u003c\/li\u003e\n\u003cli\u003eTest Voltage: 6000 VAC\u003c\/li\u003e\n\u003cli\u003eConstruction: Aluminum housed wirewound resistor with silicone rubber and mica insulation\u003c\/li\u003e\n\u003cli\u003eMounting: Chassis mount with solder lug, wire, and “Fast-on” terminations\u003c\/li\u003e\n\u003cli\u003eCustom wire lengths and multiple resistor configurations available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical and Thermal Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eUp to 350W (dependent on heat sink temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.22Ω – 6.8KΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e2500 VAC peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd\u003e1200 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to 220°C (base plate temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Resistance (°C\/W)\u003c\/td\u003e\n\u003ctd\u003eR TH1: 1, R TH2: 6.8, R TH3: 0.1, R TH4: 0.3 (values vary by model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical Dimensions \u0026amp; Mounting\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eA (mm)\u003c\/th\u003e\n\u003cth\u003eB (mm)\u003c\/th\u003e\n\u003cth\u003eL (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWFH230L2R0K\u003c\/td\u003e\n\u003ctd\u003e210\u003c\/td\u003e\n\u003ctd\u003e80\u003c\/td\u003e\n\u003ctd\u003e193\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for use with proper heatsinking; maximum base plate temperature must be monitored\u003c\/li\u003e\n\u003cli\u003eAttach thermocouples to the side of the resistor's base plate for accurate temperature measurement\u003c\/li\u003e\n\u003cli\u003eRoHS Non-compliant\u003c\/li\u003e\n\u003cli\u003ePart Number: WFH230L2R0K\u003c\/li\u003e\n\u003cli\u003eManufacturer: OHMITE MANUFACTURING\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: DK\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/res_wfh.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eThis product is designed for use with proper heatsinking. The maximum base plate temperature of the resistor must be monitored and kept within specified limits to ensure reliability and longevity. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.\u003c\/p\u003e","published_at":"2025-08-11T01:50:37+05:30","created_at":"2025-08-11T01:50:37+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["Chassis","IMPORT_CSV","OHMIT","Resistors","Wire","WLDM"],"price":831269,"price_min":831269,"price_max":831269,"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":50582825926973,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WFH230L2R0K","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"WFH230L2R0K","public_title":null,"options":["Default Title"],"price":831269,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WFH230L2R0K","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0K_12039294_5a75dd5e.jpg?v=1754857241"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0K_12039294_5a75dd5e.jpg?v=1754857241","options":["Title"],"media":[{"alt":null,"id":45768741880125,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0K_12039294_5a75dd5e.jpg?v=1754857241"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0K_12039294_5a75dd5e.jpg?v=1754857241","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description for WFH230L2R0K Wirewound Resistor\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e WFH230L2R0K is a high-performance wirewound resistor designed for chassis mounting applications. Engineered with advanced aluminum housed wirewound technology, this resistor offers superior thermal transfer and reliable power dissipation in demanding electronic environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Rating: 230 Watts at 40°C base plate temperature\u003c\/li\u003e\n\u003cli\u003eResistance Range: 0.22Ω to 6.8KΩ\u003c\/li\u003e\n\u003cli\u003eResistance Tolerance: ±5%, ±10%\u003c\/li\u003e\n\u003cli\u003eTemperature Coefficient: 50ppm - 150ppm (normal), 400ppm (low ohmic values)\u003c\/li\u003e\n\u003cli\u003eDielectric Strength: 2500 VAC peak\u003c\/li\u003e\n\u003cli\u003eWorking Voltage: 1200 VAC\u003c\/li\u003e\n\u003cli\u003eTest Voltage: 6000 VAC\u003c\/li\u003e\n\u003cli\u003eConstruction: Aluminum housed wirewound resistor with silicone rubber and mica insulation\u003c\/li\u003e\n\u003cli\u003eMounting: Chassis mount with solder lug, wire, and “Fast-on” terminations\u003c\/li\u003e\n\u003cli\u003eCustom wire lengths and multiple resistor configurations available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical and Thermal Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eUp to 350W (dependent on heat sink temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.22Ω – 6.8KΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e2500 VAC peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd\u003e1200 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to 220°C (base plate temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Resistance (°C\/W)\u003c\/td\u003e\n\u003ctd\u003eR TH1: 1, R TH2: 6.8, R TH3: 0.1, R TH4: 0.3 (values vary by model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical Dimensions \u0026amp; Mounting\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eA (mm)\u003c\/th\u003e\n\u003cth\u003eB (mm)\u003c\/th\u003e\n\u003cth\u003eL (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWFH230L2R0K\u003c\/td\u003e\n\u003ctd\u003e210\u003c\/td\u003e\n\u003ctd\u003e80\u003c\/td\u003e\n\u003ctd\u003e193\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for use with proper heatsinking; maximum base plate temperature must be monitored\u003c\/li\u003e\n\u003cli\u003eAttach thermocouples to the side of the resistor's base plate for accurate temperature measurement\u003c\/li\u003e\n\u003cli\u003eRoHS Non-compliant\u003c\/li\u003e\n\u003cli\u003ePart Number: WFH230L2R0K\u003c\/li\u003e\n\u003cli\u003eManufacturer: OHMITE MANUFACTURING\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: DK\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/res_wfh.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eThis product is designed for use with proper heatsinking. The maximum base plate temperature of the resistor must be monitored and kept within specified limits to ensure reliability and longevity. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.\u003c\/p\u003e"}
