Introducing the Walsin WW25XR020FTL series of high-performance fixed resistors, designed for reliable and precise electronic applications. Manufactured in China by Walsin, these resistors are ideal for power supply, PDA, digital meters, computers, automotives, battery chargers, and DC-DC power converters.
Part Number: WW25XR020FTL Manufacturer: WALSIN Country of Origin: CN Unit of Measure: EA ECCN: EAR99 Package Type: Surface Mount Datasheet:Download Datasheet
Product Features
High power rating with compact size (Size 2512)
High reliability and stability
Reduced size of final equipment
Lead-free construction available upon customer request
Each resistor is marked with a four-digit code on the protective coating to indicate the nominal resistance value (e.g., R010 = 0.01Ω, R510 = 0.51Ω). The resistors are constructed with a high-grade ceramic body (aluminum oxide), with internal metal electrodes connected by resistive paste, which is laser-trimmed for precise resistance values. The external terminations are lead-tin alloy for ease of soldering, with optional lead-free versions available.
Soldering and Mounting
Designed for surface mounting, these resistors are suitable for automatic placement on ceramic substrates and printed circuit boards. They can withstand immersion in solder baths up to 260°C for one minute, ensuring reliable solder joints. Typical soldering profiles are provided to guarantee optimal assembly without damage.
Additional Information
For more detailed specifications and application guidelines, please refer to the datasheet.
Note: This product description is based solely on provided data. For further details, please search the internet for the part number WW25XR020FTL.
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.
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{"id":10006260056381,"title":"WW25XR020FTL","handle":"ww25xr020ftl","description":"\u003ch3\u003eWalsin WW25XR020FTL Resistors\u003c\/h3\u003e\n\u003cp\u003eIntroducing the Walsin WW25XR020FTL series of high-performance fixed resistors, designed for reliable and precise electronic applications. Manufactured in China by Walsin, these resistors are ideal for power supply, PDA, digital meters, computers, automotives, battery chargers, and DC-DC power converters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e WW25XR020FTL\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e WALSIN\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Surface Mount\u003cbr\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25xr020ftl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh power rating with compact size (Size 2512)\u003c\/li\u003e\n\u003cli\u003eHigh reliability and stability\u003c\/li\u003e\n\u003cli\u003eReduced size of final equipment\u003c\/li\u003e\n\u003cli\u003eLead-free construction available upon customer request\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\u003eItem\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries No.\u003c\/td\u003e\n\u003ctd\u003eWW25X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize Code\u003c\/td\u003e\n\u003ctd\u003e2512 (6432)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Tolerance\u003c\/td\u003e\n\u003ctd\u003e±5% (E24), ±2% (E96), ±1% (J)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.02Ω ~ 0.91Ω (±5%), 0.02Ω ~ 0.976Ω (±1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTCR (ppm\/°C)\u003c\/td\u003e\n\u003ctd\u003e≤ 2100 ppm\/°C (0.02Ω ≤ Rn \u0026lt; 0.05Ω), ≤ 1000 ppm\/°C (0.05Ω ≤ Rn \u0026lt; 0.10Ω), ≤ 500 ppm\/°C (0.10Ω ≤ Rn \u0026lt; 0.50Ω), ≤ 400 ppm\/°C (0.50Ω ≤ Rn \u0026lt; 1Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Dissipation at 70°C\u003c\/td\u003e\n\u003ctd\u003e1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Operation Voltage\u003c\/td\u003e\n\u003ctd\u003e250V DC or RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClimatic Category (IEC 60068)\u003c\/td\u003e\n\u003ctd\u003e55\/155\/56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical Dimensions\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eSymbol\u003c\/th\u003e\n\u003cth\u003eDimensions (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL\u003c\/td\u003e\n\u003ctd\u003e6.40 ± 0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eW\u003c\/td\u003e\n\u003ctd\u003e3.20 ± 0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT\u003c\/td\u003e\n\u003ctd\u003e0.60 ± 0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTt\u003c\/td\u003e\n\u003ctd\u003e0.65 ± 0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTb\u003c\/td\u003e\n\u003ctd\u003e0.90 ± 0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMarking and Construction\u003c\/h3\u003e\n\u003cp\u003eEach resistor is marked with a four-digit code on the protective coating to indicate the nominal resistance value (e.g., R010 = 0.01Ω, R510 = 0.51Ω). The resistors are constructed with a high-grade ceramic body (aluminum oxide), with internal metal electrodes connected by resistive paste, which is laser-trimmed for precise resistance values. The external terminations are lead-tin alloy for ease of soldering, with optional lead-free versions available.\u003c\/p\u003e\n\n\u003ch3\u003eSoldering and Mounting\u003c\/h3\u003e\n\u003cp\u003eDesigned for surface mounting, these resistors are suitable for automatic placement on ceramic substrates and printed circuit boards. They can withstand immersion in solder baths up to 260°C for one minute, ensuring reliable solder joints. Typical soldering profiles are provided to guarantee optimal assembly without damage.\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor more detailed specifications and application guidelines, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25xr020ftl.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: This product description is based solely on provided data. For further details, please search the internet for the part number WW25XR020FTL.\u003c\/em\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":"2025-08-07T04:13:26+05:30","created_at":"2025-08-07T04:13:26+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["Fixed","Resistors","STD_IMG","WALSI-X","WLDM"],"price":1192,"price_min":1192,"price_max":1192,"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":50557316596029,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WW25XR020FTL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"WW25XR020FTL","public_title":null,"options":["Default Title"],"price":1192,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WW25XR020FTL","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_e5f017fe-5084-4178-bc0a-d111bb453563.jpg?v=1754520206"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_e5f017fe-5084-4178-bc0a-d111bb453563.jpg?v=1754520206","options":["Title"],"media":[{"alt":null,"id":45705474736445,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_e5f017fe-5084-4178-bc0a-d111bb453563.jpg?v=1754520206"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_e5f017fe-5084-4178-bc0a-d111bb453563.jpg?v=1754520206","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eWalsin WW25XR020FTL Resistors\u003c\/h3\u003e\n\u003cp\u003eIntroducing the Walsin WW25XR020FTL series of high-performance fixed resistors, designed for reliable and precise electronic applications. Manufactured in China by Walsin, these resistors are ideal for power supply, PDA, digital meters, computers, automotives, battery chargers, and DC-DC power converters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e WW25XR020FTL\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e WALSIN\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Surface Mount\u003cbr\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25xr020ftl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh power rating with compact size (Size 2512)\u003c\/li\u003e\n\u003cli\u003eHigh reliability and stability\u003c\/li\u003e\n\u003cli\u003eReduced size of final equipment\u003c\/li\u003e\n\u003cli\u003eLead-free construction available upon customer request\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\u003eItem\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries No.\u003c\/td\u003e\n\u003ctd\u003eWW25X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize Code\u003c\/td\u003e\n\u003ctd\u003e2512 (6432)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Tolerance\u003c\/td\u003e\n\u003ctd\u003e±5% (E24), ±2% (E96), ±1% (J)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.02Ω ~ 0.91Ω (±5%), 0.02Ω ~ 0.976Ω (±1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTCR (ppm\/°C)\u003c\/td\u003e\n\u003ctd\u003e≤ 2100 ppm\/°C (0.02Ω ≤ Rn \u0026lt; 0.05Ω), ≤ 1000 ppm\/°C (0.05Ω ≤ Rn \u0026lt; 0.10Ω), ≤ 500 ppm\/°C (0.10Ω ≤ Rn \u0026lt; 0.50Ω), ≤ 400 ppm\/°C (0.50Ω ≤ Rn \u0026lt; 1Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Dissipation at 70°C\u003c\/td\u003e\n\u003ctd\u003e1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Operation Voltage\u003c\/td\u003e\n\u003ctd\u003e250V DC or RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClimatic Category (IEC 60068)\u003c\/td\u003e\n\u003ctd\u003e55\/155\/56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical Dimensions\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eSymbol\u003c\/th\u003e\n\u003cth\u003eDimensions (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL\u003c\/td\u003e\n\u003ctd\u003e6.40 ± 0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eW\u003c\/td\u003e\n\u003ctd\u003e3.20 ± 0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT\u003c\/td\u003e\n\u003ctd\u003e0.60 ± 0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTt\u003c\/td\u003e\n\u003ctd\u003e0.65 ± 0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTb\u003c\/td\u003e\n\u003ctd\u003e0.90 ± 0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMarking and Construction\u003c\/h3\u003e\n\u003cp\u003eEach resistor is marked with a four-digit code on the protective coating to indicate the nominal resistance value (e.g., R010 = 0.01Ω, R510 = 0.51Ω). The resistors are constructed with a high-grade ceramic body (aluminum oxide), with internal metal electrodes connected by resistive paste, which is laser-trimmed for precise resistance values. The external terminations are lead-tin alloy for ease of soldering, with optional lead-free versions available.\u003c\/p\u003e\n\n\u003ch3\u003eSoldering and Mounting\u003c\/h3\u003e\n\u003cp\u003eDesigned for surface mounting, these resistors are suitable for automatic placement on ceramic substrates and printed circuit boards. They can withstand immersion in solder baths up to 260°C for one minute, ensuring reliable solder joints. Typical soldering profiles are provided to guarantee optimal assembly without damage.\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor more detailed specifications and application guidelines, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25xr020ftl.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: This product description is based solely on provided data. For further details, please search the internet for the part number WW25XR020FTL.\u003c\/em\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"}
