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WALSIN
WW25PR143FTL
WALSIN WSN RES 0R143 1% 300V 2512 THICK FILM
Introducing the WALSIN WSN series high-performance thick film resistor, designed for reliable and precise applications in various electronic devices. Manufactured in China, this resistor combines high power rating, compact size, and excellent stability to meet demanding electronic requirements.
Product Features
High power rating: 2W for size 2512, 1W for size 2010, and 0.5W for size 1206
Compact surface-mount package for space-saving designs
High reliability and stability under various environmental conditions
RoHS compliant and lead-free construction
Suitable for power supply, PDA, digital meters, automotive, battery chargers, and DC-DC power converters
Technical Specifications
Item
Series No.
Size Code
Resistance Tolerance
Resistance Range
Max. Dissipation at 70°C
Max. Operation Voltage
Max. Overload Voltage
Climatic Category (IEC 60068)
WW25P
WW25P
2512 (6432)
>±1%, ±5%
0.040Ω ~ 0.976Ω
2 W
300V
500V
55/155/56
WW20P
WW20P
2010 (5025)
±1%, ±5%
0.020Ω ~ 0.976Ω
1 W
200V
400V
55/155/56
WW12P
WW12P
1206 (3216)
±1%, ±5%
0.020Ω ~ 0.976Ω
0.5 W
200V
400V
55/155/56
Mechanical Dimensions (mm)
Symbol
WW25P
WW20P
WW12P
L
6.30 ± 0.20
5.00 ± 0.20
3.10 ± 0.15
W
3.10 ± 0.20
2.50 ± 0.20
1.60 ± 0.15
T
0.60 ± 0.15
0.60 ± 0.10
0.55 ± 0.10
Tt
0.60 ± 0.25
0.60 ± 0.25
0.50 ± 0.25
Tb
1.80 ± 0.25
0.60 ± 0.25
0.50 ± 0.25
Soldering and Mounting
These resistors are suitable for automatic placement and can withstand immersion in solder baths of 260°C for 10 seconds. Recommended solder pad dimensions are provided for optimal mounting. Surface mounting ensures reliable electrical contact through external tin (lead-free) terminations.
Part Number & Packaging
Part Number: WW25PR143FTL
Manufacturer: WALSIN
Country of Origin: CN
Unit of Measure: EA
ECCN: EAR99
Package Type: Surface Mount
Datasheet: Download Datasheet
For more detailed specifications and technical data, please refer to the datasheet linked above. This product complies with RoHS standards and is lead-free.
Note: The datasheet content is provided for reference. Please verify specifications and availability before purchase.
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{"id":10027960795453,"title":"WW25PR143FTL","handle":"ww25pr143ftl","description":"\u003ch3\u003eWALSIN WSN RES 0R143 1% 300V 2512 THICK FILM\u003c\/h3\u003e\n\u003cp\u003eIntroducing the WALSIN WSN series high-performance thick film resistor, designed for reliable and precise applications in various electronic devices. Manufactured in China, this resistor combines high power rating, compact size, and excellent stability to meet demanding electronic requirements.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh power rating: 2W for size 2512, 1W for size 2010, and 0.5W for size 1206\u003c\/li\u003e\n \u003cli\u003eCompact surface-mount package for space-saving designs\u003c\/li\u003e\n \u003cli\u003eHigh reliability and stability under various environmental conditions\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and lead-free construction\u003c\/li\u003e\n \u003cli\u003eSuitable for power supply, PDA, digital meters, automotive, battery chargers, and DC-DC power converters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eItem\u003c\/th\u003e\n \u003cth\u003eSeries No.\u003c\/th\u003e\n \u003cth\u003eSize Code\u003c\/th\u003e\n \u003cth\u003eResistance Tolerance\u003c\/th\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003cth\u003eMax. Dissipation at 70°C\u003c\/th\u003e\n \u003cth\u003eMax. Operation Voltage\u003c\/th\u003e\n \u003cth\u003eMax. Overload Voltage\u003c\/th\u003e\n \u003cth\u003eClimatic Category (IEC 60068)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW25P\u003c\/td\u003e\n \u003ctd\u003eWW25P\u003c\/td\u003e\n \u003ctd\u003e2512 (6432)\u003c\/td\u003e\n \u0026gt;±1%, ±5%\n \u003ctd\u003e0.040Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e2 W\u003c\/td\u003e\n \u003ctd\u003e300V\u003c\/td\u003e\n \u003ctd\u003e500V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW20P\u003c\/td\u003e\n \u003ctd\u003eWW20P\u003c\/td\u003e\n \u003ctd\u003e2010 (5025)\u003c\/td\u003e\n \u003ctd\u003e±1%, ±5%\u003c\/td\u003e\n \u003ctd\u003e0.020Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e1 W\u003c\/td\u003e\n \u003ctd\u003e200V\u003c\/td\u003e\n \u003ctd\u003e400V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW12P\u003c\/td\u003e\n \u003ctd\u003eWW12P\u003c\/td\u003e\n \u003ctd\u003e1206 (3216)\u003c\/td\u003e\n \u003ctd\u003e±1%, ±5%\u003c\/td\u003e\n \u003ctd\u003e0.020Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e0.5 W\u003c\/td\u003e\n \u003ctd\u003e200V\u003c\/td\u003e\n \u003ctd\u003e400V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Dimensions (mm)\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eSymbol\u003c\/th\u003e\n \u003cth\u003eWW25P\u003c\/th\u003e\n \u003cth\u003eWW20P\u003c\/th\u003e\n \u003cth\u003eWW12P\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eL\u003c\/td\u003e\n \u003ctd\u003e6.30 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e5.00 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e3.10 ± 0.15\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003ctd\u003e3.10 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e2.50 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e1.60 ± 0.15\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eT\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.15\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.10\u003c\/td\u003e\n \u003ctd\u003e0.55 ± 0.10\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTt\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.50 ± 0.25\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTb\u003c\/td\u003e\n \u003ctd\u003e1.80 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.50 ± 0.25\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSoldering and Mounting\u003c\/h3\u003e\n\u003cp\u003eThese resistors are suitable for automatic placement and can withstand immersion in solder baths of 260°C for 10 seconds. Recommended solder pad dimensions are provided for optimal mounting. Surface mounting ensures reliable electrical contact through external tin (lead-free) terminations.\u003c\/p\u003e\n\u003ch3\u003ePart Number \u0026amp; Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: WW25PR143FTL\u003c\/li\u003e\n \u003cli\u003eManufacturer: WALSIN\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: Surface Mount\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25pr143ftl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed specifications and technical data, please refer to the datasheet linked above. This product complies with RoHS standards and is lead-free.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet content is provided for reference. Please verify specifications and availability before purchase.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T05:14:52+05:30","created_at":"2025-08-16T05:14:52+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["300V","Fixed","IMPORT_CSV","IMPORT_PT2","RES","Resistors","STD_IMG","WALSI-X","WLDM"],"price":1247,"price_min":1247,"price_max":1247,"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":50626357199165,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WW25PR143FTL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"WW25PR143FTL","public_title":null,"options":["Default Title"],"price":1247,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"WW25PR143FTL","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_31f25811-579a-4acd-8cf9-71de21582e68.jpg?v=1755301494"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_31f25811-579a-4acd-8cf9-71de21582e68.jpg?v=1755301494","options":["Title"],"media":[{"alt":null,"id":45862478938429,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_31f25811-579a-4acd-8cf9-71de21582e68.jpg?v=1755301494"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_31f25811-579a-4acd-8cf9-71de21582e68.jpg?v=1755301494","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eWALSIN WSN RES 0R143 1% 300V 2512 THICK FILM\u003c\/h3\u003e\n\u003cp\u003eIntroducing the WALSIN WSN series high-performance thick film resistor, designed for reliable and precise applications in various electronic devices. Manufactured in China, this resistor combines high power rating, compact size, and excellent stability to meet demanding electronic requirements.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh power rating: 2W for size 2512, 1W for size 2010, and 0.5W for size 1206\u003c\/li\u003e\n \u003cli\u003eCompact surface-mount package for space-saving designs\u003c\/li\u003e\n \u003cli\u003eHigh reliability and stability under various environmental conditions\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and lead-free construction\u003c\/li\u003e\n \u003cli\u003eSuitable for power supply, PDA, digital meters, automotive, battery chargers, and DC-DC power converters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eItem\u003c\/th\u003e\n \u003cth\u003eSeries No.\u003c\/th\u003e\n \u003cth\u003eSize Code\u003c\/th\u003e\n \u003cth\u003eResistance Tolerance\u003c\/th\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003cth\u003eMax. Dissipation at 70°C\u003c\/th\u003e\n \u003cth\u003eMax. Operation Voltage\u003c\/th\u003e\n \u003cth\u003eMax. Overload Voltage\u003c\/th\u003e\n \u003cth\u003eClimatic Category (IEC 60068)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW25P\u003c\/td\u003e\n \u003ctd\u003eWW25P\u003c\/td\u003e\n \u003ctd\u003e2512 (6432)\u003c\/td\u003e\n \u0026gt;±1%, ±5%\n \u003ctd\u003e0.040Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e2 W\u003c\/td\u003e\n \u003ctd\u003e300V\u003c\/td\u003e\n \u003ctd\u003e500V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW20P\u003c\/td\u003e\n \u003ctd\u003eWW20P\u003c\/td\u003e\n \u003ctd\u003e2010 (5025)\u003c\/td\u003e\n \u003ctd\u003e±1%, ±5%\u003c\/td\u003e\n \u003ctd\u003e0.020Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e1 W\u003c\/td\u003e\n \u003ctd\u003e200V\u003c\/td\u003e\n \u003ctd\u003e400V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWW12P\u003c\/td\u003e\n \u003ctd\u003eWW12P\u003c\/td\u003e\n \u003ctd\u003e1206 (3216)\u003c\/td\u003e\n \u003ctd\u003e±1%, ±5%\u003c\/td\u003e\n \u003ctd\u003e0.020Ω ~ 0.976Ω\u003c\/td\u003e\n \u003ctd\u003e0.5 W\u003c\/td\u003e\n \u003ctd\u003e200V\u003c\/td\u003e\n \u003ctd\u003e400V\u003c\/td\u003e\n \u003ctd\u003e55\/155\/56\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Dimensions (mm)\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eSymbol\u003c\/th\u003e\n \u003cth\u003eWW25P\u003c\/th\u003e\n \u003cth\u003eWW20P\u003c\/th\u003e\n \u003cth\u003eWW12P\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eL\u003c\/td\u003e\n \u003ctd\u003e6.30 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e5.00 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e3.10 ± 0.15\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003ctd\u003e3.10 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e2.50 ± 0.20\u003c\/td\u003e\n \u003ctd\u003e1.60 ± 0.15\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eT\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.15\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.10\u003c\/td\u003e\n \u003ctd\u003e0.55 ± 0.10\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTt\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.50 ± 0.25\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTb\u003c\/td\u003e\n \u003ctd\u003e1.80 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.60 ± 0.25\u003c\/td\u003e\n \u003ctd\u003e0.50 ± 0.25\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSoldering and Mounting\u003c\/h3\u003e\n\u003cp\u003eThese resistors are suitable for automatic placement and can withstand immersion in solder baths of 260°C for 10 seconds. Recommended solder pad dimensions are provided for optimal mounting. Surface mounting ensures reliable electrical contact through external tin (lead-free) terminations.\u003c\/p\u003e\n\u003ch3\u003ePart Number \u0026amp; Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: WW25PR143FTL\u003c\/li\u003e\n \u003cli\u003eManufacturer: WALSIN\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: Surface Mount\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-wsn\/wsn-ww25pr143ftl.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed specifications and technical data, please refer to the datasheet linked above. This product complies with RoHS standards and is lead-free.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet content is provided for reference. Please verify specifications and availability before purchase.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
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