Introducing the WALSIN WF08U4421BTL, a high-reliability surface-mount resistor designed for precision electronic applications. Manufactured in China, this fixed thin film resistor offers exceptional stability and performance suitable for demanding environments.
Product Features
SMD metal film resistor for reliable performance
High stability with resistance tolerance options down to ±0.01%
Low temperature coefficient of resistance (TCR): 50 & 25 ppm/°C (per customer request)
High power dissipation: 0.1W at 70°C ambient
RoHS compliant and lead-free for environmentally conscious designs
Suitable for medical equipment and precision electronic devices
For more detailed specifications and application guidelines, please refer to the datasheet. Please note that the datasheet was not processed; search the internet for the part number WF08U4421BTL for additional details.
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":10005076181309,"title":"WF08U4421BTL","handle":"wf08u4421btl","description":"\u003ch3\u003eWALSIN WF08U4421BTL Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the WALSIN WF08U4421BTL, a high-reliability surface-mount resistor designed for precision electronic applications. Manufactured in China, this fixed thin film resistor offers exceptional stability and performance suitable for demanding environments.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSMD metal film resistor for reliable performance\u003c\/li\u003e\n\u003cli\u003eHigh stability with resistance tolerance options down to ±0.01%\u003c\/li\u003e\n\u003cli\u003eLow temperature coefficient of resistance (TCR): 50 \u0026amp; 25 ppm\/°C (per customer request)\u003c\/li\u003e\n\u003cli\u003eHigh power dissipation: 0.1W at 70°C ambient\u003c\/li\u003e\n\u003cli\u003eRoHS compliant and lead-free for environmentally conscious designs\u003c\/li\u003e\n\u003cli\u003eSuitable for medical equipment and precision electronic devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eWF08U4421BTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eWALSIN\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eCN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eResistors | Fixed Resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Type\u003c\/th\u003e\n\u003ctd\u003e0805 (2012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUOM\u003c\/th\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eECCN\u003c\/th\u003e\n\u003ctd\u003eEAR99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDatasheet\u003c\/th\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-wf08u4421btl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical and Mechanical Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResistance Range: 4.7Ω to 2.49MΩ\u003c\/li\u003e\n\u003cli\u003eResistance Tolerance: Up to ±0.01%\u003c\/li\u003e\n\u003cli\u003eResistance Series: E24 \u0026amp; E96 series\u003c\/li\u003e\n\u003cli\u003ePower Dissipation: 0.1W at 70°C ambient\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Voltage: 200V\u003c\/li\u003e\n\u003cli\u003eMaximum Overload Voltage: 400V\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: -55°C to +155°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Code\u003c\/th\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003cth\u003eWidth (W)\u003c\/th\u003e\n\u003cth\u003eHeight (A)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0805 (2012)\u003c\/td\u003e\n\u003ctd\u003e2.00 ± 0.10 mm\u003c\/td\u003e\n\u003ctd\u003e1.25 ± 0.10 mm\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\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-wf08u4421btl.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. Please note that the datasheet was not processed; search the internet for the part number WF08U4421BTL for additional details.\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":"2025-08-06T15:46:03+05:30","created_at":"2025-08-06T15:46:03+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["1W","Fixed","RES","Resistors","STD_IMG","WALSI-X","WLDM"],"price":499,"price_min":499,"price_max":499,"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":50555256308029,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WF08U4421BTL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"WF08U4421BTL","public_title":null,"options":["Default Title"],"price":499,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WF08U4421BTL","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_b8251567-1bd0-41ea-b596-63982e13b5b0.jpg?v=1754475363"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_b8251567-1bd0-41ea-b596-63982e13b5b0.jpg?v=1754475363","options":["Title"],"media":[{"alt":null,"id":45697865711933,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_b8251567-1bd0-41ea-b596-63982e13b5b0.jpg?v=1754475363"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_b8251567-1bd0-41ea-b596-63982e13b5b0.jpg?v=1754475363","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eWALSIN WF08U4421BTL Resistor\u003c\/h3\u003e\n\u003cp\u003eIntroducing the WALSIN WF08U4421BTL, a high-reliability surface-mount resistor designed for precision electronic applications. Manufactured in China, this fixed thin film resistor offers exceptional stability and performance suitable for demanding environments.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSMD metal film resistor for reliable performance\u003c\/li\u003e\n\u003cli\u003eHigh stability with resistance tolerance options down to ±0.01%\u003c\/li\u003e\n\u003cli\u003eLow temperature coefficient of resistance (TCR): 50 \u0026amp; 25 ppm\/°C (per customer request)\u003c\/li\u003e\n\u003cli\u003eHigh power dissipation: 0.1W at 70°C ambient\u003c\/li\u003e\n\u003cli\u003eRoHS compliant and lead-free for environmentally conscious designs\u003c\/li\u003e\n\u003cli\u003eSuitable for medical equipment and precision electronic devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eWF08U4421BTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eWALSIN\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eCN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eResistors | Fixed Resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Type\u003c\/th\u003e\n\u003ctd\u003e0805 (2012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUOM\u003c\/th\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eECCN\u003c\/th\u003e\n\u003ctd\u003eEAR99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDatasheet\u003c\/th\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-wf08u4421btl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical and Mechanical Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResistance Range: 4.7Ω to 2.49MΩ\u003c\/li\u003e\n\u003cli\u003eResistance Tolerance: Up to ±0.01%\u003c\/li\u003e\n\u003cli\u003eResistance Series: E24 \u0026amp; E96 series\u003c\/li\u003e\n\u003cli\u003ePower Dissipation: 0.1W at 70°C ambient\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Voltage: 200V\u003c\/li\u003e\n\u003cli\u003eMaximum Overload Voltage: 400V\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: -55°C to +155°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Code\u003c\/th\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003cth\u003eWidth (W)\u003c\/th\u003e\n\u003cth\u003eHeight (A)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0805 (2012)\u003c\/td\u003e\n\u003ctd\u003e2.00 ± 0.10 mm\u003c\/td\u003e\n\u003ctd\u003e1.25 ± 0.10 mm\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\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-wf08u4421btl.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. Please note that the datasheet was not processed; search the internet for the part number WF08U4421BTL for additional details.\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"}
