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SPP1UL4R70KLF185
IRC SPP1UL4R70KLF185 Fibre Core Conformal Wirewound Resistor
The SPP1UL4R70KLF185 is a high-quality fibre core conformal wirewound resistor manufactured by IRC/TT ELECTRONICS . Designed for precision applications, this resistor offers reliable performance with excellent stability and environmental resistance.
Product Features:
Part Number: SPP1UL4R70KLF185
Manufacturer: IRC/TT ELECTRONICS
Country of Origin: Mexico (MX)
Unit of Measure: Each (EA)
Package Type: Not specified
RoHS Compliant: Information not provided
Datasheet: Download Datasheet
Electrical and Mechanical Specifications:
Parameter
Details
Resistance Range
0.1Ω to 1200Ω (standard)
UL Recognized Range
1Ω to 470Ω
Standard Tolerance
±5% (E24), ±10% (E12)
Power Rating
1W @ 85°C, 3/4W @ 105°C, 1/2W @ 125°C (derates to 0W at 160°C)
Load Life Stability
±10% at 1W @ 85°C
Max. Continuous Working Voltage
√PR (Power Rating)
Insulation Resistance (Dry/Wet)
10,000 Megohms / 100 Megohms
Dielectric Withstanding Voltage
600V RMS
Temperature Coefficient
±600 ppm/°C (0.10Ω - 0.91Ω), ±300 ppm/°C (1Ω - 1200Ω)
Temperature Rise at Rated Load
Approx. 150°C at 85°C ambient
Environmental and Physical Data:
Characteristics
Maximum Limits
Temperature Coefficient (ppm/°C)
±600/°C (SPP-1 & SPP-3), ±300/°C (SPP-2)
Thermal Shock, Low Shock, Overload
±5%
Solderability
Minimum 95% coverage
Moisture Resistance
±5%
Life Test
±5%
Physical Dimensions:
Type
A (max.)
B (max.)
C (±0.002")
SPP-1
0.400" (10.2 mm)
0.148" (3.8 mm)
0.032" (0.8 mm)
SPP-2
0.570" (14.5 mm)
0.170" (4.3 mm)
0.032" (0.8 mm)
SPP-3
0.570" (14.5 mm)
0.170" (4.3 mm)
0.032" (0.8 mm)
Note:
TT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of printing. For more details, please refer to the full datasheet .
Disclaimer: The datasheet was not processed; please search the internet for the part number for more 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.
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{"id":10004963754301,"title":"SPP1UL4R70KLF185","handle":"spp1ul4r70klf185","description":"\u003ch3\u003eIRC SPP1UL4R70KLF185 Fibre Core Conformal Wirewound Resistor\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSPP1UL4R70KLF185\u003c\/strong\u003e is a high-quality fibre core conformal wirewound resistor manufactured by \u003cstrong\u003eIRC\/TT ELECTRONICS\u003c\/strong\u003e. Designed for precision applications, this resistor offers reliable performance with excellent stability and environmental resistance.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features:\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: SPP1UL4R70KLF185\u003c\/li\u003e\n \u003cli\u003eManufacturer: IRC\/TT ELECTRONICS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: Mexico (MX)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Information not provided\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/SPP1UL4R70KLF185.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range\u003c\/td\u003e\n \u003ctd\u003e0.1Ω to 1200Ω (standard)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUL Recognized Range\u003c\/td\u003e\n \u003ctd\u003e1Ω to 470Ω\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStandard Tolerance\u003c\/td\u003e\n \u003ctd\u003e±5% (E24), ±10% (E12)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating\u003c\/td\u003e\n \u003ctd\u003e1W @ 85°C, 3\/4W @ 105°C, 1\/2W @ 125°C (derates to 0W at 160°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLoad Life Stability\u003c\/td\u003e\n \u003ctd\u003e±10% at 1W @ 85°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax. Continuous Working Voltage\u003c\/td\u003e\n \u003ctd\u003e√PR (Power Rating)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInsulation Resistance (Dry\/Wet)\u003c\/td\u003e\n \u003ctd\u003e10,000 Megohms \/ 100 Megohms\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric Withstanding Voltage\u003c\/td\u003e\n \u003ctd\u003e600V RMS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient\u003c\/td\u003e\n \u003ctd\u003e±600 ppm\/°C (0.10Ω - 0.91Ω), ±300 ppm\/°C (1Ω - 1200Ω)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Rise at Rated Load\u003c\/td\u003e\n \u003ctd\u003eApprox. 150°C at 85°C ambient\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental and Physical Data:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristics\u003c\/th\u003e\n \u003cth\u003eMaximum Limits\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient (ppm\/°C)\u003c\/td\u003e\n \u003ctd\u003e±600\/°C (SPP-1 \u0026amp; SPP-3), ±300\/°C (SPP-2)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eThermal Shock, Low Shock, Overload\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSolderability\u003c\/td\u003e\n \u003ctd\u003eMinimum 95% coverage\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMoisture Resistance\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLife Test\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePhysical Dimensions:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eType\u003c\/th\u003e\n \u003cth\u003eA (max.)\u003c\/th\u003e\n \u003cth\u003eB (max.)\u003c\/th\u003e\n \u003cth\u003eC (±0.002\")\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-1\u003c\/td\u003e\n \u003ctd\u003e0.400\" (10.2 mm)\u003c\/td\u003e\n \u003ctd\u003e0.148\" (3.8 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-2\u003c\/td\u003e\n \u003ctd\u003e0.570\" (14.5 mm)\u003c\/td\u003e\n \u003ctd\u003e0.170\" (4.3 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-3\u003c\/td\u003e\n \u003ctd\u003e0.570\" (14.5 mm)\u003c\/td\u003e\n \u003ctd\u003e0.170\" (4.3 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNote:\u003c\/h3\u003e\n\u003cp\u003eTT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of printing. For more details, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/SPP1UL4R70KLF185.pdf\" target=\"_blank\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: The datasheet was not processed; please search the internet for the part number for more details.\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":"2025-08-06T13:12:48+05:30","created_at":"2025-08-06T13:12:48+05:30","vendor":"Waldom Electonics","type":"","tags":["IRC-TTEL","STD_IMG","TT","WLDM"],"price":2758,"price_min":2758,"price_max":2758,"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":50554903789885,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SPP1UL4R70KLF185","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SPP1UL4R70KLF185","public_title":null,"options":["Default Title"],"price":2758,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SPP1UL4R70KLF185","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_de863d58-0944-4159-9084-bc2c9ca95700.jpg?v=1754466168"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_de863d58-0944-4159-9084-bc2c9ca95700.jpg?v=1754466168","options":["Title"],"media":[{"alt":null,"id":45696335053117,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_de863d58-0944-4159-9084-bc2c9ca95700.jpg?v=1754466168"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_de863d58-0944-4159-9084-bc2c9ca95700.jpg?v=1754466168","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eIRC SPP1UL4R70KLF185 Fibre Core Conformal Wirewound Resistor\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSPP1UL4R70KLF185\u003c\/strong\u003e is a high-quality fibre core conformal wirewound resistor manufactured by \u003cstrong\u003eIRC\/TT ELECTRONICS\u003c\/strong\u003e. Designed for precision applications, this resistor offers reliable performance with excellent stability and environmental resistance.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features:\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: SPP1UL4R70KLF185\u003c\/li\u003e\n \u003cli\u003eManufacturer: IRC\/TT ELECTRONICS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: Mexico (MX)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Information not provided\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/SPP1UL4R70KLF185.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResistance Range\u003c\/td\u003e\n \u003ctd\u003e0.1Ω to 1200Ω (standard)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUL Recognized Range\u003c\/td\u003e\n \u003ctd\u003e1Ω to 470Ω\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStandard Tolerance\u003c\/td\u003e\n \u003ctd\u003e±5% (E24), ±10% (E12)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower Rating\u003c\/td\u003e\n \u003ctd\u003e1W @ 85°C, 3\/4W @ 105°C, 1\/2W @ 125°C (derates to 0W at 160°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLoad Life Stability\u003c\/td\u003e\n \u003ctd\u003e±10% at 1W @ 85°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax. Continuous Working Voltage\u003c\/td\u003e\n \u003ctd\u003e√PR (Power Rating)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInsulation Resistance (Dry\/Wet)\u003c\/td\u003e\n \u003ctd\u003e10,000 Megohms \/ 100 Megohms\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric Withstanding Voltage\u003c\/td\u003e\n \u003ctd\u003e600V RMS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient\u003c\/td\u003e\n \u003ctd\u003e±600 ppm\/°C (0.10Ω - 0.91Ω), ±300 ppm\/°C (1Ω - 1200Ω)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Rise at Rated Load\u003c\/td\u003e\n \u003ctd\u003eApprox. 150°C at 85°C ambient\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental and Physical Data:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristics\u003c\/th\u003e\n \u003cth\u003eMaximum Limits\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Coefficient (ppm\/°C)\u003c\/td\u003e\n \u003ctd\u003e±600\/°C (SPP-1 \u0026amp; SPP-3), ±300\/°C (SPP-2)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eThermal Shock, Low Shock, Overload\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSolderability\u003c\/td\u003e\n \u003ctd\u003eMinimum 95% coverage\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMoisture Resistance\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLife Test\u003c\/td\u003e\n \u003ctd\u003e±5%\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePhysical Dimensions:\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eType\u003c\/th\u003e\n \u003cth\u003eA (max.)\u003c\/th\u003e\n \u003cth\u003eB (max.)\u003c\/th\u003e\n \u003cth\u003eC (±0.002\")\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-1\u003c\/td\u003e\n \u003ctd\u003e0.400\" (10.2 mm)\u003c\/td\u003e\n \u003ctd\u003e0.148\" (3.8 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-2\u003c\/td\u003e\n \u003ctd\u003e0.570\" (14.5 mm)\u003c\/td\u003e\n \u003ctd\u003e0.170\" (4.3 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPP-3\u003c\/td\u003e\n \u003ctd\u003e0.570\" (14.5 mm)\u003c\/td\u003e\n \u003ctd\u003e0.170\" (4.3 mm)\u003c\/td\u003e\n \u003ctd\u003e0.032\" (0.8 mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNote:\u003c\/h3\u003e\n\u003cp\u003eTT Electronics reserves the right to make changes in product specifications without notice. All information is considered accurate at the time of printing. For more details, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-IRC\/SPP1UL4R70KLF185.pdf\" target=\"_blank\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: The datasheet was not processed; please search the internet for the part number for more details.\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"}
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