p Resistors Low Value 3W Welwyn Componen Low Value 3W Resistors Chip Resistors eries Welwyn Components LRF3W Series s @ 70CLRF3W Series * 3 Watts @ 70C Watts 70C to 1 nce range from@0.003 *s 3Resistance range from 0.003 to 1 * Tolerances to 1% ces to 1% to 1% *s Tolerances AEC-Q200 Qualified 00 Qualified s AEC-Q200 Qualified Resistance range from 0.003 to 1 Electrical Data Power Derating Curve Characteristic Value cal Data Power dissipation @70C 3 Watts Resistance Range R003 to 1R0 Value Ambient temp range ation @70C 3 Watts Resistance tolerance ange hstand mp range lerance 200V <R004 5%, R004 1, 2, 5% Pad & trace area for maximum power rating* 100ppm/C 200V -55 to +150C 300mm2 Physical Data<R004 5%, R004 1, 2, 5% Top 100ppm/C area for maximum 300mm2 al Data 60 20 80 0 60 25 70 Temperature in C 150 40 20 0 Bottom (Board Side) 25 Recommended 70 Solder Pad Layout Temperature in C 150 0.81 0.13mm 0.51 0.13mm * 80 10040 -55 to +150C R003 to 1R0 TCR Power Derating Curve % Of Power Rating Dielectric withstand ic 100 % Of Power Rating s 2.29 0.13mm Plating wrap-around 7.6mm 6.35 0.13mm 2mm Top 1mm Bottom 0.94 mm max Side) (Board thickness Recommended Solder Pad Layout 3.18 0.13mm 0.81 0.13mm 0.51 0.13mm Weight 0.065g typ. Plating wrap-around 2.29 0.13mm 7.6mm m 2mm 1mm General Note Note General Welwyn Components reserves the right to make changes in product specification without notice or liability. TT reserves the to right to make changes in product specification without notice or liability. A subsidiary of Allelectronics information is subject Welwyn's own data and is considered accurate at time of going to print. All information is subject to TT electronics'0.94 own data is considered accurate at time of going to print. TT electronics plc mmand max www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK thickness 04.10 Telephone: +44 (0) 1670 (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 3.18 0.13mm 84 11.12 Low 3W3W LowValue Value Chip ChipResistors Resistors Welwyn Components LRF3W Series LRF3W Series Construction Chips can withstand immersion in solder at 250C for 90 seconds and are suitable for reflow or wave soldering mounting applications. Patented non-noble copper based thick film material, overglaze and organic protection are screen printed on a 96% alumina substrate. The components are laser trimmed to achieve the required resistance tolerance. Marking The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Chips are packed and mounted with marking side up. The LRF3W Chips are mounted with the actual resistor element mounted face down on its termination pads. Terminations The wrap-around terminations have an electroplated nickel barrier and matte tin finish, this ensures excellent `leach' resistance properties and solderability. Performance Data AEC-Q200 Table 7 ref 3 4 6 7 8 14 15 16 18 21 22 Max. Method Test High Temp. Exposure Temperature Cycling Moisture Resistance Biased Humidity Operational Life (Cyclic Load) Vibration Resistance to Soldering Heat Thermal Shock Solderability Board Flex Terminal Strength Short Term Overload Low Temperature Storage Shelf Life Test Leach Resistance Typ. (add R05) MIL-STD-202 Method 108 JESD22 Method JA-104 MIL-STD-202 Method 106 MIL-STD-202 Method 103 MIL-STD-202 Method 108 MIL-STD-202 Method 204 MIL-STD-202 Method 210 MIL-STD-202 Method 107 J-STD-002 AEC-Q200-005 AEC-Q200-006 6.25 x Pr for 2s -65C for 100 hours Room temp for 12 months Solder dip at 250C (@R20) 0.5 0.25 0.5 0.5 1 0.5 0.25 0.25 >95% coverage 0.5 0.25 0.5 0.5 0.1 90s minimum R% R% R% R% R% R% R% R% R% R% R% R% R% 0.2 0.1 0.2 0.2 0.5 0.05 0.05 0.1 0.2 0.1 Notes: 1. Full AEC-Q200 qualification applies to ohmic values R02. Packaging LRF3W Resistors are supplied taped and reeled as per IEC 286-3. The standard quantity per reel is 1800 parts. T2 P0 D0 T P2 13 0.5mm 33 1.0 G B0 80 2 178 2 F 13 0.5 W E Marking (Both sides) T1 0.8 0.15 2.5 0.5 A0 K0 D1 P1 Tape dimensions in mm LRF3W W 0.3 12 P1 0.1 8 P0 0.1 4 P2 0.05 2 D0 0.1 1.5 D1 0.2 1.5 E 0.1 1.75 F 0.05 5.5 A0 0.1 3.61 B0 0.1 6.96 K0 0.1 1.17 T 0.05 0.28 T1 nom 0.06 T2 0.15 1.45 (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK General Note Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 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. 04.10 www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 11.12 85 Low 3W3W LowValue Value Chip ChipResistors Resistors Welwyn Components LRF3W Series LRF3W Series Ordering Procedure Specify type reference, value, tolerance and packing as shown in this example of LRF3W 5m LRF3W Type R005 G 2% on a reel of 1800 pieces: W Resistance value (IEC62 code) Tolerance (IEC62 code) F 1% G 2% J 5% Packing W Tape LRF3W 1800/reel Standard 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 86 04.10 11.12