Introducing the VISHAY RWR81SR200FPB12, a high-reliability wirewound resistor designed for demanding military and industrial applications. Manufactured in Mexico, this axial lead resistor offers precise resistance values and robust construction to ensure optimal performance in critical environments.
Product Features
High temperature silicone coating for enhanced durability
Complete welded construction for reliability
Qualified to MIL-PRF-39007 standards
Available in non-inductive styles with Ayrton-Perry winding for minimal reactive components
Resistance tolerance options include ±0.1%, ±0.5%, and ±1%
Power rating of 1W at 25°C with a resistance range from 0.499Ω to 1KΩ
Technical Specifications
Standard Electrical Specifications
Values
Power Rating (P25°C)
1 W
Resistance Range
0.499Ω to 1KΩ (±0.1%)
Resistance Range
0.499Ω to 499Ω (±0.5%, ±1%)
Operating Temperature Range
-55°C to +250°C
Dielectric Withstanding Voltage
500 VRMS (≤2W), 1000 VRMS (>2W)
Maximum Working Voltage
(P x R)¹/²
Insulation Resistance
≥1000 MΩ dry, ≥100 MΩ after moisture test
Terminal Strength
≥5 lb (≤2W), ≥10 lb (>2W)
Solderability
Meets ANSI J-STD-002 requirements
Dimensions (in inches [mm])
Model
A
B
C
RWR81
0.250 ± 0.031 [6.35 ± 0.787]
0.085 ± 0.020 [2.16 ± 0.508]
0.020 ± 0.0015 [0.508 ± 0.038]
Material and Construction
Core: Ceramic (beryllium oxide for certain models)
Element: Copper-nickel or nickel-chrome alloy
Coating: High-temperature silicone
Terminals: Tinned copperweld or bare nickel (per MIL-STD-1276)
This resistor is designed for military and established reliability applications, including MIL-PRF-39007 qualification. Maximum order sizes vary by model, with up to 1000 pieces per single lot date code for most models.
Disclaimer
All product specifications and data are subject to change without notice. Please search the internet for the part number RWR81SR200FPB12 for the most current details.
{"id":10026956783933,"title":"RWR81SR200FPB12","handle":"rwr81sr200fpb12","description":"\u003ch3\u003eVISHAY RWR81SR200FPB12 Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the VISHAY RWR81SR200FPB12, a high-reliability wirewound resistor designed for demanding military and industrial applications. Manufactured in Mexico, this axial lead resistor offers precise resistance values and robust construction to ensure optimal performance in critical environments.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh temperature silicone coating for enhanced durability\u003c\/li\u003e\n \u003cli\u003eComplete welded construction for reliability\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 \u003cli\u003eResistance tolerance options include ±0.1%, ±0.5%, and ±1%\u003c\/li\u003e\n \u003cli\u003ePower rating of 1W at 25°C with a resistance range from 0.499Ω to 1KΩ\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n \u003cth\u003eValues\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating (P25°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\u003e0.499Ω to 1KΩ (±0.1%)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range\u003c\/td\u003e\n \u003ctd\u003e0.499Ω to 499Ω (±0.5%, ±1%)\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 VRMS (≤2W), 1000 VRMS (\u0026gt;2W)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum Working Voltage\u003c\/td\u003e\n \u003ctd\u003e(P x R)¹\/²\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 after moisture test\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 \u003ctr\u003e\n \u003ctd\u003eSolderability\u003c\/td\u003e\n \u003ctd\u003eMeets ANSI J-STD-002 requirements\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDimensions (in inches [mm])\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\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 \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\/table\u003e\n\n\u003ch3\u003eMaterial and Construction\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eCore: Ceramic (beryllium oxide for certain models)\u003c\/li\u003e\n \u003cli\u003eElement: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n \u003cli\u003eCoating: High-temperature silicone\u003c\/li\u003e\n \u003cli\u003eTerminals: Tinned copperweld or bare nickel (per MIL-STD-1276)\u003c\/li\u003e\n \u003cli\u003eEnd Caps: Stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: RWR81SR200FPB12\u003c\/li\u003e\n \u003cli\u003eManufacturer: VISHAY\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: BLK\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.vishay.com\/doc?30203\" target=\"_blank\"\u003eVISHAY Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrder and Compliance\u003c\/h3\u003e\n\u003cp\u003eThis resistor is designed for military and established reliability applications, including MIL-PRF-39007 qualification. Maximum order sizes vary by model, with up to 1000 pieces per single lot date code for most models.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eAll product specifications and data are subject to change without notice. Please search the internet for the part number \u003cstrong\u003eRWR81SR200FPB12\u003c\/strong\u003e for the most current details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-15T18:24:40+05:30","created_at":"2025-08-15T18:24:40+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["1W","IMPORT_CSV","IMPORT_PT2","RES","Resistors","VISHA-X","WLDM"],"price":24808,"price_min":24808,"price_max":24808,"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":50623499075901,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"RWR81SR200FPB12","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RWR81SR200FPB12","public_title":null,"options":["Default Title"],"price":24808,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"RWR81SR200FPB12","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/55549471.jpg?v=1755262482"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55549471.jpg?v=1755262482","options":["Title"],"media":[{"alt":null,"id":45854087807293,"position":1,"preview_image":{"aspect_ratio":1.0,"height":420,"width":420,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55549471.jpg?v=1755262482"},"aspect_ratio":1.0,"height":420,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55549471.jpg?v=1755262482","width":420}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eVISHAY RWR81SR200FPB12 Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the VISHAY RWR81SR200FPB12, a high-reliability wirewound resistor designed for demanding military and industrial applications. Manufactured in Mexico, this axial lead resistor offers precise resistance values and robust construction to ensure optimal performance in critical environments.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh temperature silicone coating for enhanced durability\u003c\/li\u003e\n \u003cli\u003eComplete welded construction for reliability\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 \u003cli\u003eResistance tolerance options include ±0.1%, ±0.5%, and ±1%\u003c\/li\u003e\n \u003cli\u003ePower rating of 1W at 25°C with a resistance range from 0.499Ω to 1KΩ\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n \u003cth\u003eValues\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating (P25°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\u003e0.499Ω to 1KΩ (±0.1%)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range\u003c\/td\u003e\n \u003ctd\u003e0.499Ω to 499Ω (±0.5%, ±1%)\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 VRMS (≤2W), 1000 VRMS (\u0026gt;2W)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum Working Voltage\u003c\/td\u003e\n \u003ctd\u003e(P x R)¹\/²\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 after moisture test\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 \u003ctr\u003e\n \u003ctd\u003eSolderability\u003c\/td\u003e\n \u003ctd\u003eMeets ANSI J-STD-002 requirements\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDimensions (in inches [mm])\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\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 \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\/table\u003e\n\n\u003ch3\u003eMaterial and Construction\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eCore: Ceramic (beryllium oxide for certain models)\u003c\/li\u003e\n \u003cli\u003eElement: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n \u003cli\u003eCoating: High-temperature silicone\u003c\/li\u003e\n \u003cli\u003eTerminals: Tinned copperweld or bare nickel (per MIL-STD-1276)\u003c\/li\u003e\n \u003cli\u003eEnd Caps: Stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: RWR81SR200FPB12\u003c\/li\u003e\n \u003cli\u003eManufacturer: VISHAY\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: BLK\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.vishay.com\/doc?30203\" target=\"_blank\"\u003eVISHAY Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrder and Compliance\u003c\/h3\u003e\n\u003cp\u003eThis resistor is designed for military and established reliability applications, including MIL-PRF-39007 qualification. Maximum order sizes vary by model, with up to 1000 pieces per single lot date code for most models.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eAll product specifications and data are subject to change without notice. Please search the internet for the part number \u003cstrong\u003eRWR81SR200FPB12\u003c\/strong\u003e for the most current details.\u003c\/p\u003e\u003cbr\u003e"}
