Enhance your electronic designs with the high-quality Current Sense Resistors from TT Electronics. Designed for precision current measurement and power management, these resistors are ideal for applications requiring reliable and accurate current sensing.
Part Number: OAR3R100FLF
Manufacturer: IRC/TT ELECTRONICS
Country of Origin (COO): CN
Unit of Measure (UOM): EA
ECCN: EAR99
Package Type: Open Air Resistor
For detailed technical specifications, refer to the datasheet.
Product Features and Specifications
Designed for high-precision current sensing in electronic circuits
Resistance value: 100 milliohms (±5% tolerance)
Power rating: 3.0 Watts at 85°C
Resistance range: 2.5 to 100 milliohms
Temperature coefficient (Wire TCR): <180 ppm/°C for resistances
Operating temperature range: -40°C to +125°C
Environmental durability: <1% change in resistance after 1000 hours load life at 25°C, moisture exposure, and temperature cycling
Thermal performance: Hot spot temperature up to 230°C at 5W power dissipation, with low solder joint temperature
Robust metal alloy construction for high surge current capability
Solder Joint Temperature: Approximately 70°C at 3W
Designed to dissipate heat effectively, preventing damage to circuit boards and nearby components
Power Derating and Surge Capabilities
The OAR series resistors are built with a robust metal alloy construction, capable of withstanding higher operating temperatures and surge currents. Typical pulse/surge ratings are provided for design reference, but actual testing is recommended for critical applications.
Note: The datasheet and detailed testing data can be accessed here.
Disclaimers
TT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of publication.
{"id":10024728953149,"title":"OAR3R100FLF","handle":"oar3r100flf","description":"\u003ch3\u003eIRC OAR3R100FLF Current Sense Resistor\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic designs with the high-quality \u003cstrong\u003eCurrent Sense Resistors\u003c\/strong\u003e from TT Electronics. Designed for precision current measurement and power management, these resistors are ideal for applications requiring reliable and accurate current sensing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e OAR3R100FLF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e IRC\/TT ELECTRONICS\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 Open Air Resistor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical specifications, refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OAR3R100FLF.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Features and Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for high-precision current sensing in electronic circuits\u003c\/li\u003e\n\u003cli\u003eResistance value: 100 milliohms (±5% tolerance)\u003c\/li\u003e\n\u003cli\u003ePower rating: 3.0 Watts at 85°C\u003c\/li\u003e\n\u003cli\u003eResistance range: 2.5 to 100 milliohms\u003c\/li\u003e\n\u003cli\u003eTemperature coefficient (Wire TCR): \u0026lt;180 ppm\/°C for resistances \u003cr005 ppm for resistances\u003e\n\u003cli\u003eOperating temperature range: -40°C to +125°C\u003c\/li\u003e\n\u003cli\u003eEnvironmental durability: \u0026lt;1% change in resistance after 1000 hours load life at 25°C, moisture exposure, and temperature cycling\u003c\/li\u003e\n\u003cli\u003eThermal performance: Hot spot temperature up to 230°C at 5W power dissipation, with low solder joint temperature\u003c\/li\u003e\n\u003cli\u003eRobust metal alloy construction for high surge current capability\u003c\/li\u003e\n\u003c\/r005\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003ePower Rating @ 85°C (watts)\u003c\/th\u003e\n\u003cth\u003eResistance Range (mΩ)\u003c\/th\u003e\n\u003cth\u003eTolerance (%)\u003c\/th\u003e\n\u003cth\u003eWire TCR (ppm\/°C)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3R100FLF\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e2.5, 3, 4, 5, 6, 7, 10, 15, 20, 25, 30, 40, 45, 50, 60, 70, 100\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;180 (for \u003cr005\u003e\n\u003c\/r005\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical and Thermal Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eA (mm)\u003c\/th\u003e\n\u003cth\u003eB1max (mm)\u003c\/th\u003e\n\u003cth\u003eC (mm)\u003c\/th\u003e\n\u003cth\u003eE (mm)\u003c\/th\u003e\n\u003cth\u003eF (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3\u003c\/td\u003e\n\u003ctd\u003e0.60 +0.04\/-0.02\u003c\/td\u003e\n\u003ctd\u003e0.92\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3TP \u0026lt;R005\u003c\/td\u003e\n\u003ctd\u003e0.275 +0.04\/-0.03\u003c\/td\u003e\n\u003ctd\u003e1.12\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3TP ≥R005\u003c\/td\u003e\n\u003ctd\u003e0.197 +0.04\/-0.03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eThermal Performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot Spot Temperature:\u003c\/strong\u003e Up to 160°C at 3W power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolder Joint Temperature:\u003c\/strong\u003e Approximately 70°C at 3W\u003c\/li\u003e\n\u003cli\u003eDesigned to dissipate heat effectively, preventing damage to circuit boards and nearby components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePower Derating and Surge Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe OAR series resistors are built with a robust metal alloy construction, capable of withstanding higher operating temperatures and surge currents. Typical pulse\/surge ratings are provided for design reference, but actual testing is recommended for critical applications.\u003c\/p\u003e\n\u003cp\u003eNote: The datasheet and detailed testing data can be accessed \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OAR3R100FLF.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDisclaimers\u003c\/h3\u003e\n\u003cp\u003eTT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of publication.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-14T11:01:25+05:30","created_at":"2025-08-14T11:01:25+05:30","vendor":"Waldom Electonics","type":"","tags":["IMPORT_CSV","IRC-TTEL","Resistor","WLDM"],"price":6930,"price_min":6930,"price_max":6930,"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":50618898841917,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"OAR3R100FLF","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"OAR3R100FLF","public_title":null,"options":["Default Title"],"price":6930,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"OAR3R100FLF","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/OAR3R100FLF_52230527_1c726f2d.jpg?v=1755149489"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OAR3R100FLF_52230527_1c726f2d.jpg?v=1755149489","options":["Title"],"media":[{"alt":null,"id":45831746388285,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OAR3R100FLF_52230527_1c726f2d.jpg?v=1755149489"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OAR3R100FLF_52230527_1c726f2d.jpg?v=1755149489","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eIRC OAR3R100FLF Current Sense Resistor\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic designs with the high-quality \u003cstrong\u003eCurrent Sense Resistors\u003c\/strong\u003e from TT Electronics. Designed for precision current measurement and power management, these resistors are ideal for applications requiring reliable and accurate current sensing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e OAR3R100FLF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e IRC\/TT ELECTRONICS\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 Open Air Resistor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical specifications, refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OAR3R100FLF.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Features and Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for high-precision current sensing in electronic circuits\u003c\/li\u003e\n\u003cli\u003eResistance value: 100 milliohms (±5% tolerance)\u003c\/li\u003e\n\u003cli\u003ePower rating: 3.0 Watts at 85°C\u003c\/li\u003e\n\u003cli\u003eResistance range: 2.5 to 100 milliohms\u003c\/li\u003e\n\u003cli\u003eTemperature coefficient (Wire TCR): \u0026lt;180 ppm\/°C for resistances \u003cr005 ppm for resistances\u003e\n\u003cli\u003eOperating temperature range: -40°C to +125°C\u003c\/li\u003e\n\u003cli\u003eEnvironmental durability: \u0026lt;1% change in resistance after 1000 hours load life at 25°C, moisture exposure, and temperature cycling\u003c\/li\u003e\n\u003cli\u003eThermal performance: Hot spot temperature up to 230°C at 5W power dissipation, with low solder joint temperature\u003c\/li\u003e\n\u003cli\u003eRobust metal alloy construction for high surge current capability\u003c\/li\u003e\n\u003c\/r005\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003ePower Rating @ 85°C (watts)\u003c\/th\u003e\n\u003cth\u003eResistance Range (mΩ)\u003c\/th\u003e\n\u003cth\u003eTolerance (%)\u003c\/th\u003e\n\u003cth\u003eWire TCR (ppm\/°C)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3R100FLF\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e2.5, 3, 4, 5, 6, 7, 10, 15, 20, 25, 30, 40, 45, 50, 60, 70, 100\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;180 (for \u003cr005\u003e\n\u003c\/r005\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical and Thermal Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eA (mm)\u003c\/th\u003e\n\u003cth\u003eB1max (mm)\u003c\/th\u003e\n\u003cth\u003eC (mm)\u003c\/th\u003e\n\u003cth\u003eE (mm)\u003c\/th\u003e\n\u003cth\u003eF (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3\u003c\/td\u003e\n\u003ctd\u003e0.60 +0.04\/-0.02\u003c\/td\u003e\n\u003ctd\u003e0.92\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3TP \u0026lt;R005\u003c\/td\u003e\n\u003ctd\u003e0.275 +0.04\/-0.03\u003c\/td\u003e\n\u003ctd\u003e1.12\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOAR3TP ≥R005\u003c\/td\u003e\n\u003ctd\u003e0.197 +0.04\/-0.03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eThermal Performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot Spot Temperature:\u003c\/strong\u003e Up to 160°C at 3W power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolder Joint Temperature:\u003c\/strong\u003e Approximately 70°C at 3W\u003c\/li\u003e\n\u003cli\u003eDesigned to dissipate heat effectively, preventing damage to circuit boards and nearby components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePower Derating and Surge Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe OAR series resistors are built with a robust metal alloy construction, capable of withstanding higher operating temperatures and surge currents. Typical pulse\/surge ratings are provided for design reference, but actual testing is recommended for critical applications.\u003c\/p\u003e\n\u003cp\u003eNote: The datasheet and detailed testing data can be accessed \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OAR3R100FLF.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDisclaimers\u003c\/h3\u003e\n\u003cp\u003eTT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of publication.\u003c\/p\u003e\u003cbr\u003e"}
