High Power High Power Resistors Welwyn Components Chip Resistors Welwyn Components Chip Resistors High Power Chip Resistors SC3 Series SC3 Series 3 W atts in a 1 W att size package* SC3 Series Resistance range from 1R0 to 10K 3 W atts in a 1 W att size package* Tolerances to 1% 3 watts in a 1 wa tt size package Resistance range from 1R0 to 10K Resistance range from 1R0 to 10K AEC-Q200 Quali ed Tolerances to 1% Tolerances to 1% * Power 70C Rated AEC-Q200 Quali ed AEC-Q200 Qualified * 70C Rated Power All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2) Electrical Data Power Derating Curve ElectricCalhar acDteraisttica Value Power Derating Curve 100 Power dissipation 70 C 3 watts Characteristic Value Resistance Range 100 80 1R0 to 10K Power dissipation 70 C 3 watts LEV 100 V Resistance Range 80 60 1R0 to 10K Ambient temp range -55 to +150C LEV 100 V Resistance tolerance 1, 2, 5% 60 40 Ambient temp range -55 to +150C TCR 100ppm/C Resistance tolerance 1, 2, 5% 40 20 Leach-resistant solder-plated Termination TCR 100ppm/C copper wrap-around 20 0 Leach-resistant solder-plated 25 70 150 Pad & trace area for maximum Termination 2 300mm copper wrap-around T emperature in C 0 power rating 25 70 150 Pad & trace area for maximum 2 300mm T emperature in C power rating Physical Data Physical Data To p Bottom Recommended (Board Side) Solder Pad Layout To p Bottom Recommended 0.51 0.13m m 0.81 0.31mm (Board Side) Solder Pad Layout 0.81 0.31mm 0.51 0.13m m 7.6m m 2.29 Plating 0.13m m wrap-around 6.35 0.13m m 7.6m m Plating 2.29 wrap-around 0.13m m 2mm 6.35 0.13m m 1mm 2mm 0.762 1mm 0.127m m thickness 3.18 0.13m m 0.762 0.127m m thickness 3.18 0.13m m General Note Welwyn Components reserves the right to make changes in product speci cation without notice or liability. A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. General Note TT electronics plc Welwyn Components reserves the right to make changes in product speci cation without notice or liability. General Note W elwyn Components Limited Bedlington, Northumberland NE22 7AA, UK BI Technologies IRC Welwyn All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of TT Electronics reservTelephone: es the right to mak+44 (0) 1670 e changes in product specific822181 Facsimile: +44 ation without notice or liability.(0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue A 04.1003.02 TT electronics plc All information is subject to TT Electronics own data and is considered accurate at time of going to print. W elwyn Components Limited Bedlington, Northumberland NE22 7AA, UK www.ttelectronicsresistors.com 84 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue A 03.02 04.10 TT Electronics plc 84 04.16 % Of Power Rating % Of Power RatingHigh PHighoPowwer er Chip Resistors Chip Resistors SC3 Series Welwyn Components SC3 Series Chips can withstand immersion in solder at 250C for 90 Construction seconds and are suitable for reflow or wave soldering Resistive thick film material, overglaze and organic protection mounting applications. are screen printed on a 96% alumina substrate. The components are laser trimmed to achieve the required Marking resistance tolerance. The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Terminations Chips are packed and mounted with marking side up. ThThe e wrwrap-arap-around ound termcopper inaterminations tions have anhave electan roplelectrated nicoplatedkel The SC3 Chips are mounted with the actual resistor element banickel rrier barrier and maand tte tin-lead tin nish.solder This ecoating, nsures this ensures mounted face down on its termination pads. eexcellent xcellent leleach ach rresistaesistance nce pprroperties operties aand nd solsolderabilitderabilityy.. Performance Data AEC-Q200 Table 7 Method Max.+0.01 Typ. Test ref High Temp. Exposure MIL-STD-202 Method 108 R% 0.5 0.2 3 Temperature Cycling JESD22 Method JA-104 0.25 0.1 4 R% Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 6 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.1 7 8 Operational Life (Cyclic Load) MIL-STD-202 Method 108 R% 1.0 0.5 14 Vibration MIL-STD-202 Method 204 R% 0.25 0.05 15 Resistance to Soldering Heat MIL-STD-202 Method 210 R% 0.25 0.05 16 Thermal Shock MIL-STD-202 Method 107 R% 0.5 0.2 18 Solderability J-STD-002 >95% coverage 21 AEC-Q200-005 R% 0.25 0.05 Board Flex 22 Terminal Strength AEC-Q200-006 R% 0.25 0.05 6.25 x Pr for 2s R% 0.5 Short Term Overload Low Temperature Storage -65C for 100 hours R% 0.5 Low Temperature Operation -65C for 1 hour then Pr for 45 minutes R% 0.5 R% Shelf Life Test Room temp for 12 months 0.1 Leach Resistance Solder dip at 250C 90s minimum Temperature Rise vs Pad Area Pulse Power Rating 1000 100 100 10 10 1 2 2 2 100mm 300mm 1000mm 0.1 1.0 10.0 Termination Pad Area (each end) Time (sec) 1 watt 2 watt 3 watt General Note BI Technologies IRC Welwyn 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. www.ttelectronicsresistors.com 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 Issue A 04.1003.02 TT Electronics plc 04.16 Temperature Rise (C) Power (watts)