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SP20F Datasheet(PDF) 1 Page - TT Electronics. |
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SP20F Datasheet(HTML) 1 Page - TT Electronics. |
1 / 3 page General-Purpose Failsafe Moulded Wirewound Resistors General-Purpose Failsafe Moulded Wirewound Resistors SP20/SP20F Series • Drop-in replacement for BW20/BW20F • Predictable fusing characteristics • 1 watt rated with 1/2 watt dimensions • 0.1 ohm to 1200 ohms • Weldable and solderable magnetic leads General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 95 Type F 0 2 P S 0 2 P S EIA RS-344 Style CRU 1 MIL-R-11 Style RC20/RC32 k 1 o t 1 R 0 2 k 1 o t 1 R 0 s m h o e g n a R e c n a t s i s e R 0 1 ± , 5 ± % e c n a r e l o T C ° 0 5 t a 1 C ° 0 5 t a 1 s t t a w g n it a r r e w o P 0.75 at 70°C 0.75 at 70°C - C ° 0 0 1 t a 5 . 0 Derating to 0 at 160°C Derating to 0 at 160°C Maximum continuous working voltage √PR g e M 0 0 0 , 0 1 y r d e c n a t s i s e r n o it a l u s n i m u m i n i M g e M 0 0 1 t e w V 0 0 7 M T A s tl o v g n i d n a t s h ti w c ir t c e l e i d m u m i n i M V 0 5 4 S M R e r u s s e r p d e c u d e R Hotspot temperature rise 120°C at 1 watt Current noise Negligible Electrical Data Issue B · 03.02 A subsidiary of TT electronics plc Welwyn Components Dimensions (mm) Type L D d f SP20 9.91±0.25 3.56±0.20 0.813±0.05 38.1±3.2 SP20F 9.91±0.25 3.56±0.20 0.813±0.05 38.1±3.2 Physical Data L D f d Resistive Element All resistor types have resistance alloy winding on a braided fibreglass substrate. Intermediate silicone coatings are used to enhance processibility and to provide protection to the resistive element. Termination The SP20 and SP20F resistors are terminated using an alloy coated copper flashed steel lead welded to a cap of the same material. This termination assembly is mechanically crimped, utilizing an improved crimp design, to the resistive element. Encapsulation The SP20 and SP20F are encapsulated utilizing a compression molded phenolic plastic material. The SP20F has a flame resistance coating applied over the resistive element to provide flammmability protection when destructive overloads may occur. Marking All products are marked utilizing heat and solvent resistant colour code bands consistent with EIA/MIL requirements. The first band is double width to designate wirewound construction. A fifth band, blue in colour, is used for flameproof identification. UL Recognised Range ohms N/A 1R0 to 470R SP20 / SP20F Series SP20F UL1412 recognised fusing * 0.1 ohm to 1200 ohms Fversionhasflameresistantcoating 1wattratedwith1/2wattdimensions Drop-inreplacementBW20/BW20F Weldableandsolderablemagneticlead TCR’saslowas±150ppm/°Cstandard(customTC’savailable) Leadfree,RoHScompliantconstructionavailable *ULfilenumberE234469 Make Possible Resistors 07.14 General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc www.ttelectronicsresistors.com AllPb-freepartscomplywithEUDirective2011/65/EU(RoHS2) |
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