The VISHAY RH-25 is a high-performance wirewound resistor designed for industrial power applications with chassis mounting. Manufactured in Mexico, this resistor offers reliable performance and excellent stability in demanding environments.
Molded construction provides total environmental protection
Complete welded construction available
Meets MIL-PRF-18546 requirements
Available in non-inductive styles (type NH) with Ayrton-Perry winding for minimal reactive components
Mounts on chassis to utilize heat-sink effect for enhanced heat dissipation
Excellent stability with less than 1% change in resistance
Electrical Specifications
Standard Electrical Specifications
Col2
Col3
Col4
Col5
Col6
Col7
Col8
Global Model
RH005
RH-5
7.5
0.5 to 6.75K
0.1 to 8.6K
0.05 to 8.6K
0.02 to 24.5K
Power Rating @ 25°C
4.5 W
Resistance Range ± 0.05 %, ± 0.1 %
0.5 to 25.7K
Resistance Range ± 0.25 %
0.1 to 32.99K
Resistance Range ± 0.5 %
0.05 to 32.99K
Resistance Range ± 1 %, ± 3 %, ± 5 %
0.01 to 95.2K
Typical Weight (g)
12
Technical Details
Temperature Coefficient: ±20 ppm/°C for 10Ω and above; ±50 ppm/°C for 1Ω to 9.9Ω; ±100 ppm/°C for 0.1Ω to 0.99Ω
Maximum Working Voltage: (Power x Resistance)1/2
Insulation Resistance: ≥10,000 MΩ dry, ≥1,000 MΩ after moisture test
Operating Temperature Range: -55°C to +250°C
Solderability: Meets ANSI J-STD-002 requirements
Dimensions (in inches [mm])
Model
A
B
C
D
E
F
G
H
J
K
L
M
N
P
RH025
0.719 ± 0.005 [18.26 mm]
0.781 ± 0.005 [19.84 mm]
1.938 ± 0.062 [49.23 mm]
0.5 ± 0.0 [13 mm]
1.080 ± 0.015 [27.43 mm]
0.546 ± 0.015 [13.87 mm]
0.075 ± 0.010 [1.91 mm]
0.231 ± 0.010 [5.87 mm]
0.172 ± 0.010 [4.37 mm]
0.125 ± 0.005 [3.18 mm]
0.085 ± 0.005 [2.16 mm]
0.438 ± 0.062 [11.13 mm]
Power Ratings & Derating
Model
W at 25°C
RH025
12.5 W
Vishay RH resistors are rated for operation with appropriate heat sinking. Derating is required for ambient temperatures above 25°C and when heat sink area is reduced. Refer to the datasheet for detailed derating curves.
Material & Construction
Element: Copper-nickel or nickel-chrome alloy
Core: Ceramic, steatite, or alumina
Encapsulant: Silicone molded construction
Housing: Aluminum with hard anodic coating
End Caps: Stainless steel
Terminals: Tin/lead or Ni/Pd/Au finishes, threaded stainless steel for larger sizes
Performance & Testing
Thermal Shock: ±0.5% + 0.05Ω
Short Time Overload: ±0.5% + 0.05Ω
Dielectric Withstanding Voltage: Up to 4500 VRMS depending on size
Load Life: ±1.0% + 0.05Ω after 1000 hours at rated power
Shock & Vibration: Minimal resistance change under specified conditions
Disclaimers
All product specifications and data are subject to change without notice. Vishay disclaims liability for errors or inaccuracies. Use of these resistors in medical, life-saving, or life-sustaining applications is at the customer's risk. Please consult the datasheet for detailed information and verify suitability for your application.
Note: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.
{"id":10009127321917,"title":"RH0251R820FC02","handle":"rh0251r820fc02","description":"\u003ch3\u003eVISHAY RH-25 Wirewound Resistor - Chassis Mount\u003c\/h3\u003e\n\u003cp\u003eThe VISHAY RH-25 is a high-performance wirewound resistor designed for industrial power applications with chassis mounting. Manufactured in Mexico, this resistor offers reliable performance and excellent stability in demanding environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e RH0251R820FC02\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e VISHAY\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e MX\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rh0251r820fc02.pdf\" target=\"_blank\"\u003eRH-25 1.82 1% C02 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMolded construction provides total environmental protection\u003c\/li\u003e\n \u003cli\u003eComplete welded construction available\u003c\/li\u003e\n \u003cli\u003eMeets MIL-PRF-18546 requirements\u003c\/li\u003e\n \u003cli\u003eAvailable in non-inductive styles (type NH) with Ayrton-Perry winding for minimal reactive components\u003c\/li\u003e\n \u003cli\u003eMounts on chassis to utilize heat-sink effect for enhanced heat dissipation\u003c\/li\u003e\n \u003cli\u003eExcellent stability with less than 1% change in resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n \u003cth\u003eCol2\u003c\/th\u003e\n \u003cth\u003eCol3\u003c\/th\u003e\n \u003cth\u003eCol4\u003c\/th\u003e\n \u003cth\u003eCol5\u003c\/th\u003e\n \u003cth\u003eCol6\u003c\/th\u003e\n \u003cth\u003eCol7\u003c\/th\u003e\n \u003cth\u003eCol8\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eGlobal Model\u003c\/td\u003e\n \u003ctd\u003eRH005\u003c\/td\u003e\n \u003ctd\u003eRH-5\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e0.5 to 6.75K\u003c\/td\u003e\n \u003ctd\u003e0.1 to 8.6K\u003c\/td\u003e\n \u003ctd\u003e0.05 to 8.6K\u003c\/td\u003e\n \u003ctd\u003e0.02 to 24.5K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating @ 25°C\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e4.5 W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.05 %, ± 0.1 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.5 to 25.7K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.25 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.1 to 32.99K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.5 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.05 to 32.99K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 1 %, ± 3 %, ± 5 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.01 to 95.2K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTypical Weight (g)\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e12\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eTemperature Coefficient: ±20 ppm\/°C for 10Ω and above; ±50 ppm\/°C for 1Ω to 9.9Ω; ±100 ppm\/°C for 0.1Ω to 0.99Ω\u003c\/li\u003e\n \u003cli\u003eMaximum Working Voltage: (Power x Resistance)1\/2\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥10,000 MΩ dry, ≥1,000 MΩ after moisture test\u003c\/li\u003e\n \u003cli\u003eOperating Temperature Range: -55°C to +250°C\u003c\/li\u003e\n \u003cli\u003eSolderability: Meets ANSI J-STD-002 requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 \u003cth\u003eD\u003c\/th\u003e\n \u003cth\u003eE\u003c\/th\u003e\n \u003cth\u003eF\u003c\/th\u003e\n \u003cth\u003eG\u003c\/th\u003e\n \u003cth\u003eH\u003c\/th\u003e\n \u003cth\u003eJ\u003c\/th\u003e\n \u003cth\u003eK\u003c\/th\u003e\n \u003cth\u003eL\u003c\/th\u003e\n \u003cth\u003eM\u003c\/th\u003e\n \u003cth\u003eN\u003c\/th\u003e\n \u003cth\u003eP\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eRH025\u003c\/td\u003e\n \u003ctd\u003e0.719 ± 0.005 [18.26 mm]\u003c\/td\u003e\n \u003ctd\u003e0.781 ± 0.005 [19.84 mm]\u003c\/td\u003e\n \u003ctd\u003e1.938 ± 0.062 [49.23 mm]\u003c\/td\u003e\n \u003ctd\u003e0.5 ± 0.0 [13 mm]\u003c\/td\u003e\n \u003ctd\u003e1.080 ± 0.015 [27.43 mm]\u003c\/td\u003e\n \u003ctd\u003e0.546 ± 0.015 [13.87 mm]\u003c\/td\u003e\n \u003ctd\u003e0.075 ± 0.010 [1.91 mm]\u003c\/td\u003e\n \u003ctd\u003e0.231 ± 0.010 [5.87 mm]\u003c\/td\u003e\n \u003ctd\u003e0.172 ± 0.010 [4.37 mm]\u003c\/td\u003e\n \u003ctd\u003e0.125 ± 0.005 [3.18 mm]\u003c\/td\u003e\n \u003ctd\u003e0.085 ± 0.005 [2.16 mm]\u003c\/td\u003e\n \u003ctd\u003e0.438 ± 0.062 [11.13 mm]\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePower Ratings \u0026amp; Derating\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eW at 25°C\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eRH025\u003c\/td\u003e\n \u003ctd\u003e12.5 W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eVishay RH resistors are rated for operation with appropriate heat sinking. Derating is required for ambient temperatures above 25°C and when heat sink area is reduced. Refer to the datasheet for detailed derating curves.\u003c\/p\u003e\n\n\u003ch3\u003eMaterial \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eElement: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n \u003cli\u003eCore: Ceramic, steatite, or alumina\u003c\/li\u003e\n \u003cli\u003eEncapsulant: Silicone molded construction\u003c\/li\u003e\n \u003cli\u003eHousing: Aluminum with hard anodic coating\u003c\/li\u003e\n \u003cli\u003eEnd Caps: Stainless steel\u003c\/li\u003e\n \u003cli\u003eTerminals: Tin\/lead or Ni\/Pd\/Au finishes, threaded stainless steel for larger sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance \u0026amp; Testing\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eThermal Shock: ±0.5% + 0.05Ω\u003c\/li\u003e\n \u003cli\u003eShort Time Overload: ±0.5% + 0.05Ω\u003c\/li\u003e\n \u003cli\u003eDielectric Withstanding Voltage: Up to 4500 VRMS depending on size\u003c\/li\u003e\n \u003cli\u003eLoad Life: ±1.0% + 0.05Ω after 1000 hours at rated power\u003c\/li\u003e\n \u003cli\u003eShock \u0026amp; Vibration: Minimal resistance change under specified conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDisclaimers\u003c\/h3\u003e\n\u003cp\u003eAll product specifications and data are subject to change without notice. Vishay disclaims liability for errors or inaccuracies. Use of these resistors in medical, life-saving, or life-sustaining applications is at the customer's risk. Please consult the datasheet for detailed information and verify suitability for your application.\u003c\/p\u003e\n\n\u003cp\u003eFor more details, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rh0251r820fc02.pdf\" target=\"_blank\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2025-08-08T11:14:26+05:30","created_at":"2025-08-08T11:14:26+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["Chassis","IMPORT_PT2","Resistors","RH","STD_IMG","VISHA-X","WLDM"],"price":77057,"price_min":77057,"price_max":77057,"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":50562602434877,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"RH0251R820FC02","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RH0251R820FC02","public_title":null,"options":["Default Title"],"price":77057,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"RH0251R820FC02","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_8c643411-ce07-467b-b089-9e6226dacbe2.jpg?v=1754631866"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_8c643411-ce07-467b-b089-9e6226dacbe2.jpg?v=1754631866","options":["Title"],"media":[{"alt":null,"id":45724494594365,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_8c643411-ce07-467b-b089-9e6226dacbe2.jpg?v=1754631866"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_8c643411-ce07-467b-b089-9e6226dacbe2.jpg?v=1754631866","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eVISHAY RH-25 Wirewound Resistor - Chassis Mount\u003c\/h3\u003e\n\u003cp\u003eThe VISHAY RH-25 is a high-performance wirewound resistor designed for industrial power applications with chassis mounting. Manufactured in Mexico, this resistor offers reliable performance and excellent stability in demanding environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e RH0251R820FC02\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e VISHAY\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e MX\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rh0251r820fc02.pdf\" target=\"_blank\"\u003eRH-25 1.82 1% C02 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMolded construction provides total environmental protection\u003c\/li\u003e\n \u003cli\u003eComplete welded construction available\u003c\/li\u003e\n \u003cli\u003eMeets MIL-PRF-18546 requirements\u003c\/li\u003e\n \u003cli\u003eAvailable in non-inductive styles (type NH) with Ayrton-Perry winding for minimal reactive components\u003c\/li\u003e\n \u003cli\u003eMounts on chassis to utilize heat-sink effect for enhanced heat dissipation\u003c\/li\u003e\n \u003cli\u003eExcellent stability with less than 1% change in resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eStandard Electrical Specifications\u003c\/th\u003e\n \u003cth\u003eCol2\u003c\/th\u003e\n \u003cth\u003eCol3\u003c\/th\u003e\n \u003cth\u003eCol4\u003c\/th\u003e\n \u003cth\u003eCol5\u003c\/th\u003e\n \u003cth\u003eCol6\u003c\/th\u003e\n \u003cth\u003eCol7\u003c\/th\u003e\n \u003cth\u003eCol8\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eGlobal Model\u003c\/td\u003e\n \u003ctd\u003eRH005\u003c\/td\u003e\n \u003ctd\u003eRH-5\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e0.5 to 6.75K\u003c\/td\u003e\n \u003ctd\u003e0.1 to 8.6K\u003c\/td\u003e\n \u003ctd\u003e0.05 to 8.6K\u003c\/td\u003e\n \u003ctd\u003e0.02 to 24.5K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating @ 25°C\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e4.5 W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.05 %, ± 0.1 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.5 to 25.7K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.25 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.1 to 32.99K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 0.5 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.05 to 32.99K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range ± 1 %, ± 3 %, ± 5 %\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e0.01 to 95.2K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTypical Weight (g)\u003c\/td\u003e\n \u003ctd colspan=\"7\"\u003e12\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eTemperature Coefficient: ±20 ppm\/°C for 10Ω and above; ±50 ppm\/°C for 1Ω to 9.9Ω; ±100 ppm\/°C for 0.1Ω to 0.99Ω\u003c\/li\u003e\n \u003cli\u003eMaximum Working Voltage: (Power x Resistance)1\/2\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥10,000 MΩ dry, ≥1,000 MΩ after moisture test\u003c\/li\u003e\n \u003cli\u003eOperating Temperature Range: -55°C to +250°C\u003c\/li\u003e\n \u003cli\u003eSolderability: Meets ANSI J-STD-002 requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 \u003cth\u003eD\u003c\/th\u003e\n \u003cth\u003eE\u003c\/th\u003e\n \u003cth\u003eF\u003c\/th\u003e\n \u003cth\u003eG\u003c\/th\u003e\n \u003cth\u003eH\u003c\/th\u003e\n \u003cth\u003eJ\u003c\/th\u003e\n \u003cth\u003eK\u003c\/th\u003e\n \u003cth\u003eL\u003c\/th\u003e\n \u003cth\u003eM\u003c\/th\u003e\n \u003cth\u003eN\u003c\/th\u003e\n \u003cth\u003eP\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eRH025\u003c\/td\u003e\n \u003ctd\u003e0.719 ± 0.005 [18.26 mm]\u003c\/td\u003e\n \u003ctd\u003e0.781 ± 0.005 [19.84 mm]\u003c\/td\u003e\n \u003ctd\u003e1.938 ± 0.062 [49.23 mm]\u003c\/td\u003e\n \u003ctd\u003e0.5 ± 0.0 [13 mm]\u003c\/td\u003e\n \u003ctd\u003e1.080 ± 0.015 [27.43 mm]\u003c\/td\u003e\n \u003ctd\u003e0.546 ± 0.015 [13.87 mm]\u003c\/td\u003e\n \u003ctd\u003e0.075 ± 0.010 [1.91 mm]\u003c\/td\u003e\n \u003ctd\u003e0.231 ± 0.010 [5.87 mm]\u003c\/td\u003e\n \u003ctd\u003e0.172 ± 0.010 [4.37 mm]\u003c\/td\u003e\n \u003ctd\u003e0.125 ± 0.005 [3.18 mm]\u003c\/td\u003e\n \u003ctd\u003e0.085 ± 0.005 [2.16 mm]\u003c\/td\u003e\n \u003ctd\u003e0.438 ± 0.062 [11.13 mm]\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePower Ratings \u0026amp; Derating\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eW at 25°C\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eRH025\u003c\/td\u003e\n \u003ctd\u003e12.5 W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eVishay RH resistors are rated for operation with appropriate heat sinking. Derating is required for ambient temperatures above 25°C and when heat sink area is reduced. Refer to the datasheet for detailed derating curves.\u003c\/p\u003e\n\n\u003ch3\u003eMaterial \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eElement: Copper-nickel or nickel-chrome alloy\u003c\/li\u003e\n \u003cli\u003eCore: Ceramic, steatite, or alumina\u003c\/li\u003e\n \u003cli\u003eEncapsulant: Silicone molded construction\u003c\/li\u003e\n \u003cli\u003eHousing: Aluminum with hard anodic coating\u003c\/li\u003e\n \u003cli\u003eEnd Caps: Stainless steel\u003c\/li\u003e\n \u003cli\u003eTerminals: Tin\/lead or Ni\/Pd\/Au finishes, threaded stainless steel for larger sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance \u0026amp; Testing\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eThermal Shock: ±0.5% + 0.05Ω\u003c\/li\u003e\n \u003cli\u003eShort Time Overload: ±0.5% + 0.05Ω\u003c\/li\u003e\n \u003cli\u003eDielectric Withstanding Voltage: Up to 4500 VRMS depending on size\u003c\/li\u003e\n \u003cli\u003eLoad Life: ±1.0% + 0.05Ω after 1000 hours at rated power\u003c\/li\u003e\n \u003cli\u003eShock \u0026amp; Vibration: Minimal resistance change under specified conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDisclaimers\u003c\/h3\u003e\n\u003cp\u003eAll product specifications and data are subject to change without notice. Vishay disclaims liability for errors or inaccuracies. Use of these resistors in medical, life-saving, or life-sustaining applications is at the customer's risk. Please consult the datasheet for detailed information and verify suitability for your application.\u003c\/p\u003e\n\n\u003cp\u003eFor more details, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-vis\/vis-rh0251r820fc02.pdf\" target=\"_blank\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.\u003c\/strong\u003e\u003c\/p\u003e"}
