Introducing the high-performance Wirewound Resistor from OHMITE MANUFACTURING, designed for reliable power dissipation and thermal management in demanding electronic applications. This chassis-mounted resistor offers robust construction and precise specifications to ensure optimal operation in various industrial and electronic systems.
Power rating: 90W - 330W, with specific models including 230W at 2Ω resistance
Resistance tolerance options: ±5%, ±10%
High dielectric strength: 2500 VAC peak
Working voltage: 1200 VAC
Test voltage: 6000 VAC
Lead wire options: XLPE, 600V, 125°C, 18 AWG stranded (wire terminal version only)
Insulation material: Silicone Rubber & Mica, UL-recognized (UL 94 HB), withstands temperatures up to 220°C, with short-term exposure up to 300°C
Designed with advanced flat core winding technology for low profile and superior thermal transfer
Aluminum housed for efficient heat dissipation and mounting flexibility
Terminations available: Solder, wire, and “Fast-On”
Custom wire lengths available for tailored applications
Electrical & Thermal Specifications
Parameter
Value
Power Rating
90W - 330W
Resistance Tolerance
±5%, ±10%
Temperature Coefficient
Normal: 50ppm - 150ppm; Low ohmic: 400ppm
Dielectric Strength
2500 VAC peak
Working Voltage
1200 VAC
Test Voltage
6000 VAC
Thermal Resistance (°C/W)
Measurement Point
WFH90
WFH160
WFH230
WFH330
R_TH 1
1
2
1
0.75
R_TH 2
6.8
3.9
2.75
2
R_TH 3
0.1
0.05
0.03
0.02
R_TH 4
0.3
0.17
0.1
0.085
Design & Mounting
The WFH series is engineered with aluminum housed wirewound technology, enabling effective heatsinking and close component mounting. Proper heatsinking is essential for maintaining maximum power ratings. Use thermocouples on the resistor base plate to monitor temperature, as the plastic housing or heat sink surface temperature alone is not sufficient for rating determination.
For mounting calculations and thermal management, refer to the detailed equations provided in the datasheet. Ensure the maximum temperature of the resistor's base plate remains below 220°C for reliable operation.
Note
This product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored to ensure safe operation. For detailed application guidelines, please consult the datasheet linked above.
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{"id":10021490884925,"title":"WFH230L2R0KE","handle":"wfh230l2r0ke","description":"\u003ch3\u003eOHMITE MANUFACTURING WFH230L2R0KE Wirewound Resistor - Chassis Mount, 230W, 2Ω, 10% Tolerance\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-performance \u003cstrong\u003eWirewound Resistor\u003c\/strong\u003e from OHMITE MANUFACTURING, designed for reliable power dissipation and thermal management in demanding electronic applications. This chassis-mounted resistor offers robust construction and precise specifications to ensure optimal operation in various industrial and electronic systems.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e WFH230L2R0KE\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e OHMITE MANUFACTURING\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e DK (Denmark)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (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 BOX\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/4donline.ihs.com\/images\/VipMasterIC\/IC\/OMIT\/OMITS00968\/OMITS00968-1.pdf?hkey=82A29B72BDB3BD67C626B77C2F032848\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower rating: 90W - 330W, with specific models including 230W at 2Ω resistance\u003c\/li\u003e\n \u003cli\u003eResistance tolerance options: ±5%, ±10%\u003c\/li\u003e\n \u003cli\u003eHigh dielectric 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\u003eLead wire options: XLPE, 600V, 125°C, 18 AWG stranded (wire terminal version only)\u003c\/li\u003e\n \u003cli\u003eInsulation material: Silicone Rubber \u0026amp; Mica, UL-recognized (UL 94 HB), withstands temperatures up to 220°C, with short-term exposure up to 300°C\u003c\/li\u003e\n \u003cli\u003eDesigned with advanced flat core winding technology for low profile and superior thermal transfer\u003c\/li\u003e\n \u003cli\u003eAluminum housed for efficient heat dissipation and mounting flexibility\u003c\/li\u003e\n \u003cli\u003eTerminations available: Solder, wire, and “Fast-On”\u003c\/li\u003e\n \u003cli\u003eCustom wire lengths available for tailored applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Thermal Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating\u003c\/td\u003e\n \u003ctd\u003e90W - 330W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Tolerance\u003c\/td\u003e\n \u003ctd\u003e±5%, ±10%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient\u003c\/td\u003e\n \u003ctd\u003eNormal: 50ppm - 150ppm; Low ohmic: 400ppm\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\u003eTest Voltage\u003c\/td\u003e\n \u003ctd\u003e6000 VAC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eThermal Resistance (°C\/W)\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eMeasurement Point\u003c\/th\u003e\n \u003cth\u003eWFH90\u003c\/th\u003e\n \u003cth\u003eWFH160\u003c\/th\u003e\n \u003cth\u003eWFH230\u003c\/th\u003e\n \u003cth\u003eWFH330\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 1\u003c\/td\u003e\n \u003ctd\u003e1\u003c\/td\u003e\n \u003ctd\u003e2\u003c\/td\u003e\n \u003ctd\u003e1\u003c\/td\u003e\n \u003ctd\u003e0.75\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 2\u003c\/td\u003e\n \u003ctd\u003e6.8\u003c\/td\u003e\n \u003ctd\u003e3.9\u003c\/td\u003e\n \u003ctd\u003e2.75\u003c\/td\u003e\n \u003ctd\u003e2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 3\u003c\/td\u003e\n \u003ctd\u003e0.1\u003c\/td\u003e\n \u003ctd\u003e0.05\u003c\/td\u003e\n \u003ctd\u003e0.03\u003c\/td\u003e\n \u003ctd\u003e0.02\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 4\u003c\/td\u003e\n \u003ctd\u003e0.3\u003c\/td\u003e\n \u003ctd\u003e0.17\u003c\/td\u003e\n \u003ctd\u003e0.1\u003c\/td\u003e\n \u003ctd\u003e0.085\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDesign \u0026amp; Mounting\u003c\/h3\u003e\n\u003cp\u003eThe WFH series is engineered with aluminum housed wirewound technology, enabling effective heatsinking and close component mounting. Proper heatsinking is essential for maintaining maximum power ratings. Use thermocouples on the resistor base plate to monitor temperature, as the plastic housing or heat sink surface temperature alone is not sufficient for rating determination.\u003c\/p\u003e\n\u003cp\u003eFor mounting calculations and thermal management, refer to the detailed equations provided in the datasheet. Ensure the maximum temperature of the resistor's base plate remains below 220°C for reliable operation.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eThis product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored to ensure safe operation. For detailed application guidelines, please consult the datasheet linked above.\u003c\/p\u003e","published_at":"2025-08-12T18:26:58+05:30","created_at":"2025-08-12T18:26:58+05:30","vendor":"Waldom Electonics","type":"","tags":["IMPORT_CSV","OHMIT","Wire","WLDM"],"price":613404,"price_min":613404,"price_max":613404,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50612529496381,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WFH230L2R0KE","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"WFH230L2R0KE","public_title":null,"options":["Default Title"],"price":613404,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WFH230L2R0KE","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0KE_12039295_4c1b1fae.jpg?v=1755003422"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0KE_12039295_4c1b1fae.jpg?v=1755003422","options":["Title"],"media":[{"alt":null,"id":45803419566397,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0KE_12039295_4c1b1fae.jpg?v=1755003422"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/WFH230L2R0KE_12039295_4c1b1fae.jpg?v=1755003422","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eOHMITE MANUFACTURING WFH230L2R0KE Wirewound Resistor - Chassis Mount, 230W, 2Ω, 10% Tolerance\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-performance \u003cstrong\u003eWirewound Resistor\u003c\/strong\u003e from OHMITE MANUFACTURING, designed for reliable power dissipation and thermal management in demanding electronic applications. This chassis-mounted resistor offers robust construction and precise specifications to ensure optimal operation in various industrial and electronic systems.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e WFH230L2R0KE\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e OHMITE MANUFACTURING\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e DK (Denmark)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (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 BOX\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/4donline.ihs.com\/images\/VipMasterIC\/IC\/OMIT\/OMITS00968\/OMITS00968-1.pdf?hkey=82A29B72BDB3BD67C626B77C2F032848\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower rating: 90W - 330W, with specific models including 230W at 2Ω resistance\u003c\/li\u003e\n \u003cli\u003eResistance tolerance options: ±5%, ±10%\u003c\/li\u003e\n \u003cli\u003eHigh dielectric 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\u003eLead wire options: XLPE, 600V, 125°C, 18 AWG stranded (wire terminal version only)\u003c\/li\u003e\n \u003cli\u003eInsulation material: Silicone Rubber \u0026amp; Mica, UL-recognized (UL 94 HB), withstands temperatures up to 220°C, with short-term exposure up to 300°C\u003c\/li\u003e\n \u003cli\u003eDesigned with advanced flat core winding technology for low profile and superior thermal transfer\u003c\/li\u003e\n \u003cli\u003eAluminum housed for efficient heat dissipation and mounting flexibility\u003c\/li\u003e\n \u003cli\u003eTerminations available: Solder, wire, and “Fast-On”\u003c\/li\u003e\n \u003cli\u003eCustom wire lengths available for tailored applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Thermal Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating\u003c\/td\u003e\n \u003ctd\u003e90W - 330W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Tolerance\u003c\/td\u003e\n \u003ctd\u003e±5%, ±10%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient\u003c\/td\u003e\n \u003ctd\u003eNormal: 50ppm - 150ppm; Low ohmic: 400ppm\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\u003eTest Voltage\u003c\/td\u003e\n \u003ctd\u003e6000 VAC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eThermal Resistance (°C\/W)\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eMeasurement Point\u003c\/th\u003e\n \u003cth\u003eWFH90\u003c\/th\u003e\n \u003cth\u003eWFH160\u003c\/th\u003e\n \u003cth\u003eWFH230\u003c\/th\u003e\n \u003cth\u003eWFH330\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 1\u003c\/td\u003e\n \u003ctd\u003e1\u003c\/td\u003e\n \u003ctd\u003e2\u003c\/td\u003e\n \u003ctd\u003e1\u003c\/td\u003e\n \u003ctd\u003e0.75\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 2\u003c\/td\u003e\n \u003ctd\u003e6.8\u003c\/td\u003e\n \u003ctd\u003e3.9\u003c\/td\u003e\n \u003ctd\u003e2.75\u003c\/td\u003e\n \u003ctd\u003e2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 3\u003c\/td\u003e\n \u003ctd\u003e0.1\u003c\/td\u003e\n \u003ctd\u003e0.05\u003c\/td\u003e\n \u003ctd\u003e0.03\u003c\/td\u003e\n \u003ctd\u003e0.02\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR_TH 4\u003c\/td\u003e\n \u003ctd\u003e0.3\u003c\/td\u003e\n \u003ctd\u003e0.17\u003c\/td\u003e\n \u003ctd\u003e0.1\u003c\/td\u003e\n \u003ctd\u003e0.085\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDesign \u0026amp; Mounting\u003c\/h3\u003e\n\u003cp\u003eThe WFH series is engineered with aluminum housed wirewound technology, enabling effective heatsinking and close component mounting. Proper heatsinking is essential for maintaining maximum power ratings. Use thermocouples on the resistor base plate to monitor temperature, as the plastic housing or heat sink surface temperature alone is not sufficient for rating determination.\u003c\/p\u003e\n\u003cp\u003eFor mounting calculations and thermal management, refer to the detailed equations provided in the datasheet. Ensure the maximum temperature of the resistor's base plate remains below 220°C for reliable operation.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eThis product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored to ensure safe operation. For detailed application guidelines, please consult the datasheet linked above.\u003c\/p\u003e"}
