IRC OARS1R030FTR-LF Current Sense Chip Resistors - 0.03 Ohm, 1W
Introducing the IRC OARS1R030FTR-LF, a high-performance surface mount current sense resistor designed for precise current measurement in electronic applications. Manufactured by IRC/TT ELECTRONICS and compliant with RoHS standards, this resistor offers reliable thermal and electrical characteristics suitable for demanding environments.
Key Features
Resistance value: 0.03 Ohm
Power rating: 1 Watt
Surface mount package for easy PCB integration
Flexible leads to accommodate thermal expansion
Open air design reduces PCB heating
Low resistance values down to 1mΩ available
Temperature coefficient (TCR): ±40ppm/°C
Element TCR: ±20ppm/°C
Zero-ohm jumper version available for circuit bridging
Qualified under AEC-Q200 standards for automotive reliability
RoHS3 compliant, Pb-free construction
Electrical & Physical Data
Mounting & Thermal Performance
The OARS series maintains thermal distance from solder joints, reducing undesirable heat transfer into the PCB. High-precision applications benefit from Kelvin 4-terminal mounting configurations, ensuring accurate current sensing.
Construction & Packaging
Constructed with welded copper terminations on resistance alloy strip
Value adjustment via control of width and optional notch trimming
Pb-free termination finish: 96% Sn / 4% Ag alloy
Legend marked with ohmic value and tolerance code
Packaging details: Available in standard reel or bulk packaging
Ordering Information
European Part Number: OARS1-R01JI (10 milliohms ±5%, Pb-free)
European Zero-Ohm Jumper: OARS-1Z
USA Part Number: OARS1R010JLF (10 milliohms ±5%, Pb-free)
{"id":10026145677629,"title":"OARS1R030FTR-LF","handle":"oars1r030ftr-lf","description":"\u003ch3\u003eIRC OARS1R030FTR-LF Current Sense Chip Resistors - 0.03 Ohm, 1W\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the IRC OARS1R030FTR-LF, a high-performance surface mount current sense resistor designed for precise current measurement in electronic applications. Manufactured by IRC\/TT ELECTRONICS and compliant with RoHS standards, this resistor offers reliable thermal and electrical characteristics suitable for demanding environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eResistance value: 0.03 Ohm\u003c\/li\u003e\n \u003cli\u003ePower rating: 1 Watt\u003c\/li\u003e\n \u003cli\u003eSurface mount package for easy PCB integration\u003c\/li\u003e\n \u003cli\u003eFlexible leads to accommodate thermal expansion\u003c\/li\u003e\n \u003cli\u003eOpen air design reduces PCB heating\u003c\/li\u003e\n \u003cli\u003eLow resistance values down to 1mΩ available\u003c\/li\u003e\n \u003cli\u003eTemperature coefficient (TCR): ±40ppm\/°C\u003c\/li\u003e\n \u003cli\u003eElement TCR: ±20ppm\/°C\u003c\/li\u003e\n \u003cli\u003eZero-ohm jumper version available for circuit bridging\u003c\/li\u003e\n \u003cli\u003eQualified under AEC-Q200 standards for automotive reliability\u003c\/li\u003e\n \u003cli\u003eRoHS3 compliant, Pb-free construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Physical Data\u003c\/h3\u003e\n\u003c!-- Specific tables and performance data can be included here if available --\u003e\n\n\u003ch3\u003eMounting \u0026amp; Thermal Performance\u003c\/h3\u003e\n\u003cp\u003eThe OARS series maintains thermal distance from solder joints, reducing undesirable heat transfer into the PCB. High-precision applications benefit from Kelvin 4-terminal mounting configurations, ensuring accurate current sensing.\u003c\/p\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eConstructed with welded copper terminations on resistance alloy strip\u003c\/li\u003e\n \u003cli\u003eValue adjustment via control of width and optional notch trimming\u003c\/li\u003e\n \u003cli\u003ePb-free termination finish: 96% Sn \/ 4% Ag alloy\u003c\/li\u003e\n \u003cli\u003eLegend marked with ohmic value and tolerance code\u003c\/li\u003e\n \u003cli\u003ePackaging details: Available in standard reel or bulk packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eEuropean Part Number: \u003cstrong\u003eOARS1-R01JI\u003c\/strong\u003e (10 milliohms ±5%, Pb-free)\u003c\/li\u003e\n \u003cli\u003eEuropean Zero-Ohm Jumper: \u003cstrong\u003eOARS-1Z\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eUSA Part Number: \u003cstrong\u003eOARS1R010JLF\u003c\/strong\u003e (10 milliohms ±5%, Pb-free)\u003c\/li\u003e\n \u003cli\u003eUSA Zero-Ohm Jumper: \u003cstrong\u003eOARS-1ZLF\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Metadata\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: OARS1R030FTR-LF\u003c\/li\u003e\n \u003cli\u003eManufacturer: IRC\/TT ELECTRONICS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUOM: EA\u003c\/li\u003e\n \u003cli\u003eECCN: \u003c\/li\u003e\n \u003cli\u003ePackage Type: Surface Mount\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OARS1R030FTR-LF.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-15T02:06:05+05:30","created_at":"2025-08-15T02:06:07+05:30","vendor":"Waldom Electonics","type":"","tags":["1W","IMPORT_CSV","IRC-TTEL","OHM","Resistor","WLDM"],"price":5128,"price_min":5128,"price_max":5128,"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":50621637427517,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"OARS1R030FTR-LF","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"OARS1R030FTR-LF","public_title":null,"options":["Default Title"],"price":5128,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"OARS1R030FTR-LF","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/OARS1R030FTR-LF_52230192_7368b9f2.jpg?v=1755203767"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OARS1R030FTR-LF_52230192_7368b9f2.jpg?v=1755203767","options":["Title"],"media":[{"alt":null,"id":45844471218493,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OARS1R030FTR-LF_52230192_7368b9f2.jpg?v=1755203767"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/OARS1R030FTR-LF_52230192_7368b9f2.jpg?v=1755203767","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eIRC OARS1R030FTR-LF Current Sense Chip Resistors - 0.03 Ohm, 1W\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the IRC OARS1R030FTR-LF, a high-performance surface mount current sense resistor designed for precise current measurement in electronic applications. Manufactured by IRC\/TT ELECTRONICS and compliant with RoHS standards, this resistor offers reliable thermal and electrical characteristics suitable for demanding environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eResistance value: 0.03 Ohm\u003c\/li\u003e\n \u003cli\u003ePower rating: 1 Watt\u003c\/li\u003e\n \u003cli\u003eSurface mount package for easy PCB integration\u003c\/li\u003e\n \u003cli\u003eFlexible leads to accommodate thermal expansion\u003c\/li\u003e\n \u003cli\u003eOpen air design reduces PCB heating\u003c\/li\u003e\n \u003cli\u003eLow resistance values down to 1mΩ available\u003c\/li\u003e\n \u003cli\u003eTemperature coefficient (TCR): ±40ppm\/°C\u003c\/li\u003e\n \u003cli\u003eElement TCR: ±20ppm\/°C\u003c\/li\u003e\n \u003cli\u003eZero-ohm jumper version available for circuit bridging\u003c\/li\u003e\n \u003cli\u003eQualified under AEC-Q200 standards for automotive reliability\u003c\/li\u003e\n \u003cli\u003eRoHS3 compliant, Pb-free construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Physical Data\u003c\/h3\u003e\n\u003c!-- Specific tables and performance data can be included here if available --\u003e\n\n\u003ch3\u003eMounting \u0026amp; Thermal Performance\u003c\/h3\u003e\n\u003cp\u003eThe OARS series maintains thermal distance from solder joints, reducing undesirable heat transfer into the PCB. High-precision applications benefit from Kelvin 4-terminal mounting configurations, ensuring accurate current sensing.\u003c\/p\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eConstructed with welded copper terminations on resistance alloy strip\u003c\/li\u003e\n \u003cli\u003eValue adjustment via control of width and optional notch trimming\u003c\/li\u003e\n \u003cli\u003ePb-free termination finish: 96% Sn \/ 4% Ag alloy\u003c\/li\u003e\n \u003cli\u003eLegend marked with ohmic value and tolerance code\u003c\/li\u003e\n \u003cli\u003ePackaging details: Available in standard reel or bulk packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eEuropean Part Number: \u003cstrong\u003eOARS1-R01JI\u003c\/strong\u003e (10 milliohms ±5%, Pb-free)\u003c\/li\u003e\n \u003cli\u003eEuropean Zero-Ohm Jumper: \u003cstrong\u003eOARS-1Z\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eUSA Part Number: \u003cstrong\u003eOARS1R010JLF\u003c\/strong\u003e (10 milliohms ±5%, Pb-free)\u003c\/li\u003e\n \u003cli\u003eUSA Zero-Ohm Jumper: \u003cstrong\u003eOARS-1ZLF\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Metadata\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: OARS1R030FTR-LF\u003c\/li\u003e\n \u003cli\u003eManufacturer: IRC\/TT ELECTRONICS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUOM: EA\u003c\/li\u003e\n \u003cli\u003eECCN: \u003c\/li\u003e\n \u003cli\u003ePackage Type: Surface Mount\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/OARS1R030FTR-LF.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
