Low Value 3W Welwyn Components Chip Resistors Low Value 3W Low Value 3W Welwyn Components Chip Resistors Chip Resistors LRF3W Series LRF3W Series s 3 Watts 70C LRF3W Series 3 Watts 70C s 3 Watts 70C s Resistance range from 0.003 to 1 Resistance range from 0.003 to 1 s Resistance range from 0.003 to 1 Tolerances to 1% s Tolerances to 1% s Tolerances to 1% AEC-Q200 Qualified AEC-Q200 Qualified s AEC-Q200 Qualified s Electrical Data Power Derating Curve Characteristic Value 100 Power dissipation 70C 3 Watts 80 Electrical Data Power Derating Curve Resistance Range R003 to 1R0 60 Dielectric withstand 200V Characteristic Value 100 40 Ambient temp range -55 to +150C Power dissipation 70C 3 Watts <R004 5%, 20 Resistance tolerance 80 R004 1, 2, 5% Resistance Range R003 to 1R0 0 25 70 150 TCR 100ppm/C 60 Temperature in C Dielectric withstand 200V Pad & trace area for maximum 2 300mm power rating* 40 Ambient temp range -55 to +150C <R004 5%, 20 Physical Data Resistance tolerance R004 1, 2, 5% 0 Top Bottom Recommended TCR 100ppm/C 25 70 150 (Board Side) Solder Pad Layout Temperature in C Pad & trace area for maximum 2 300mm 0.51 0.13mm 0.81 0.13mm power rating* 2.29 7.6mm Plating 0.13mm wrap-around Physical Data 6.35 0.13mm 2mm 1mm Top Bottom Recommended 0.94 mm max (Board Side) Solder Pad Layout thickness 3.18 0.13mm 0.81 0.13mm 0.51 0.13mm Weight 0.065g typ. 7.6mm 2.29 Plating 0.13mm wrap-around 6.35 0.13mm 2mm General Note 1mm General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of All information is subject to TT electronics own data and is considered accurate at time of going to print. 0.94 mm max TT electronics plc www.bitechnologies.com www.irctt.com www.welwyn-tt.com Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK thickness Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 04.10 TT electronics plc 3.18 0.13mm 11.12 84 Weight 0.065g typ. General Note Welwyn Components reserves the right to make changes in product specification 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. TT electronics plc 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 04.10 84 % Of Power Rating % Of Power RatingLow Value 3W Low Value 3W Chip Resistors Chip Resistors LRF3W Series Welwyn Components LRF3W Series Chips can withstand immersion in solder at 250C for Construction 90 seconds and are suitable for reflow or wave soldering Patented non-noble copper based thick film material, mounting applications. overglaze and organic protection are screen printed on a 96% alumina substrate. The components are laser trimmed to Marking achieve the required 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. The wrap-around terminations have an electroplated nickel The LRF3W Chips are mounted with the actual resistor barrier and matte tin finish, this ensures excellent leach element mounted face down on its termination pads. resistance properties and solderability. Performance Data AEC-Q200 Table 7 Max. Typ. Method (add R05) ( R20) ref Test 3 High Temp. Exposure MIL-STD-202 Method 108 R% 0.5 0.2 4 Temperature Cycling JESD22 Method JA-104 R% 0.25 0.1 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 8 Operational Life (Cyclic Load) MIL-STD-202 Method 108 R% 1 0.5 14 Vibration MIL-STD-202 Method 204 R% 0.5 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% 0.25 0.1 18 Solderability J-STD-002 >95% coverage 21 Board Flex AEC-Q200-005 R% 0.5 0.2 22 Terminal Strength AEC-Q200-006 R% 0.25 0.1 Short Term Overload 6.25 x Pr for 2s R% 0.5 Low Temperature Storage -65C for 100 hours R% 0.5 Shelf Life Test Room temp for 12 months R% 0.1 Leach Resistance Solder dip at 250C 90s minimum 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. T 2 P 0 D 0 P 2 T 33 1.0 13 0.5mm Marking (Both sides) 13 0.5 T 1 A D 0 1 0.8 0.15 2.5 0.5 K P 0 1 Tape dimensions in mm W P1 P0 P2 D0 D1 E F A0 B0 K0 T T1 T2 0.3 0.1 0.1 0.05 0.1 0.2 0.1 0.05 0.1 0.1 0.1 0.05 nom 0.15 LRF3W 12 8 4 2 1.5 1.5 1.75 5.5 3.61 6.96 1.17 0.28 0.06 1.45 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 04.10 TT electronics reserves the right to make changes in product specification without notice or liability. 85 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 TT electronics plc 11.12 178 2 80 2 B 0 G F E W