Introducing the VISHAY RWR81SR665FRB12, a high-reliability axial lead resistor designed for demanding electronic applications. Manufactured in Mexico, this precision resistor offers excellent performance characteristics suitable for military and established reliability environments.
Part Number: RWR81SR665FRB12
Manufacturer: VISHAY
Country of Origin: MX
Unit of Measure: EA
ECCN: EAR99
Package Type: BLK
For detailed technical specifications, please refer to the datasheet.
Product Features
Resistance value: 0.665 ohms
Power rating: 1W at 25°C
Tolerance: 1%
Axial lead construction with complete welded design for high reliability
High temperature silicone coating for enhanced durability
Qualified to MIL-PRF-39007 standards
Available in non-inductive styles with Ayrton-Perry winding for minimal reactive components
Technical Specifications
Standard Electrical Specifications
Values
Power Rating @ 25°C
1 W
Resistance Range
0.499 to 1K Ω (±0.1%) and 0.1 to 1K Ω (±0.5%, ±1%)
{"id":10026979230013,"title":"RWR81SR665FRB12","handle":"rwr81sr665frb12","description":"\u003ch3\u003eVISHAY RWR81SR665FRB12 Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the VISHAY RWR81SR665FRB12, a high-reliability axial lead resistor designed for demanding electronic applications. Manufactured in Mexico, this precision resistor offers excellent performance characteristics suitable for military and established reliability environments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RWR81SR665FRB12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e VISHAY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e MX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\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\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rwr81sr665frb12.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResistance value: 0.665 ohms\u003c\/li\u003e\n\u003cli\u003ePower rating: 1W at 25°C\u003c\/li\u003e\n\u003cli\u003eTolerance: 1%\u003c\/li\u003e\n\u003cli\u003eAxial lead construction with complete welded design for high reliability\u003c\/li\u003e\n\u003cli\u003eHigh temperature silicone coating for enhanced durability\u003c\/li\u003e\n\u003cli\u003eQualified to MIL-PRF-39007 standards\u003c\/li\u003e\n\u003cli\u003eAvailable in non-inductive styles with Ayrton-Perry winding for minimal reactive components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n\u003cth\u003eValues\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Rating @ 25°C\u003c\/td\u003e\n\u003ctd\u003e1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.499 to 1K Ω (±0.1%) and 0.1 to 1K Ω (±0.5%, ±1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Temperature Coefficient\u003c\/td\u003e\n\u003ctd\u003e±50 ppm\/°C (for resistance ranges specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-55°C to +250°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Withstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e500 VAC (≤2W), 1000 VAC (\u0026gt;2W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e≥1000 MΩ (dry), ≥100 MΩ (moisture test)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eMeets ANSI J-STD-002 standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Strength\u003c\/td\u003e\n\u003ctd\u003e≥5 lb (≤2W), ≥10 lb (\u0026gt;2W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDimensions (in inches [mm])\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eA\u003c\/th\u003e\n\u003cth\u003eB\u003c\/th\u003e\n\u003cth\u003eC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRWR81\u003c\/td\u003e\n\u003ctd\u003e0.250 ± 0.031 [6.35 ± 0.787]\u003c\/td\u003e\n\u003ctd\u003e0.085 ± 0.020 [2.16 ± 0.508]\u003c\/td\u003e\n\u003ctd\u003e0.020 ± 0.0015 [0.508 ± 0.038]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCore material: Beryllium oxide ceramic\u003c\/li\u003e\n\u003cli\u003eMaterial: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n\u003cli\u003eHigh temperature silicone coating for durability\u003c\/li\u003e\n\u003cli\u003eQualified to MIL-PRF-39007 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more technical details, visit the \u003ca href=\"http:\/\/www.vishay.com\" target=\"_blank\"\u003eVISHAY website\u003c\/a\u003e or \u003ca href=\"http:\/\/www.vishay.com\/doc?30371\" target=\"_blank\"\u003emodel specifications\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed. Please search the internet for the part number RWR81SR665FRB12 for more details.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eLegal Disclaimer: All product specifications are subject to change without notice. Please verify details before use.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-15T18:36:44+05:30","created_at":"2025-08-15T18:36:44+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["1W","Fixed","IMPORT_CSV","IMPORT_PT2","RES","Resistors","VISHA-X","WLDM"],"price":19126,"price_min":19126,"price_max":19126,"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":50623524766013,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"RWR81SR665FRB12","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RWR81SR665FRB12","public_title":null,"options":["Default Title"],"price":19126,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"RWR81SR665FRB12","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/55550937.jpg?v=1755263206"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55550937.jpg?v=1755263206","options":["Title"],"media":[{"alt":null,"id":45854287036733,"position":1,"preview_image":{"aspect_ratio":1.0,"height":420,"width":420,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55550937.jpg?v=1755263206"},"aspect_ratio":1.0,"height":420,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55550937.jpg?v=1755263206","width":420}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eVISHAY RWR81SR665FRB12 Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the VISHAY RWR81SR665FRB12, a high-reliability axial lead resistor designed for demanding electronic applications. Manufactured in Mexico, this precision resistor offers excellent performance characteristics suitable for military and established reliability environments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RWR81SR665FRB12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e VISHAY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e MX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\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\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rwr81sr665frb12.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResistance value: 0.665 ohms\u003c\/li\u003e\n\u003cli\u003ePower rating: 1W at 25°C\u003c\/li\u003e\n\u003cli\u003eTolerance: 1%\u003c\/li\u003e\n\u003cli\u003eAxial lead construction with complete welded design for high reliability\u003c\/li\u003e\n\u003cli\u003eHigh temperature silicone coating for enhanced durability\u003c\/li\u003e\n\u003cli\u003eQualified to MIL-PRF-39007 standards\u003c\/li\u003e\n\u003cli\u003eAvailable in non-inductive styles with Ayrton-Perry winding for minimal reactive components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n\u003cth\u003eValues\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Rating @ 25°C\u003c\/td\u003e\n\u003ctd\u003e1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.499 to 1K Ω (±0.1%) and 0.1 to 1K Ω (±0.5%, ±1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Temperature Coefficient\u003c\/td\u003e\n\u003ctd\u003e±50 ppm\/°C (for resistance ranges specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-55°C to +250°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Withstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e500 VAC (≤2W), 1000 VAC (\u0026gt;2W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e≥1000 MΩ (dry), ≥100 MΩ (moisture test)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eMeets ANSI J-STD-002 standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Strength\u003c\/td\u003e\n\u003ctd\u003e≥5 lb (≤2W), ≥10 lb (\u0026gt;2W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDimensions (in inches [mm])\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eA\u003c\/th\u003e\n\u003cth\u003eB\u003c\/th\u003e\n\u003cth\u003eC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRWR81\u003c\/td\u003e\n\u003ctd\u003e0.250 ± 0.031 [6.35 ± 0.787]\u003c\/td\u003e\n\u003ctd\u003e0.085 ± 0.020 [2.16 ± 0.508]\u003c\/td\u003e\n\u003ctd\u003e0.020 ± 0.0015 [0.508 ± 0.038]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCore material: Beryllium oxide ceramic\u003c\/li\u003e\n\u003cli\u003eMaterial: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n\u003cli\u003eHigh temperature silicone coating for durability\u003c\/li\u003e\n\u003cli\u003eQualified to MIL-PRF-39007 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more technical details, visit the \u003ca href=\"http:\/\/www.vishay.com\" target=\"_blank\"\u003eVISHAY website\u003c\/a\u003e or \u003ca href=\"http:\/\/www.vishay.com\/doc?30371\" target=\"_blank\"\u003emodel specifications\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed. Please search the internet for the part number RWR81SR665FRB12 for more details.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eLegal Disclaimer: All product specifications are subject to change without notice. Please verify details before use.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
