High Power Dissipation SMT Chip Resistor High Power Dissipation SMT Chip Resistor SC3 Series * Tolerances to 1% *SC33 Series watt rating at 70C * Resistance range from 1 to 100K to 1% *ss Tolerances Standard Sn/Pb and matte tin 3 watt rating at 70C (Pb-free) terminations available s Resistance range from 1 to 100K s Standard Sn/Pb and matte tin (Pb-free) terminations available Electrical Data Power Derating Chart Resistance Range 1 to 100K Resistance Tolerance 1%, 2%, 5% % Of Rated Power Temperature Coefficient 100 100 ppm/C Power Dissipation 3.0 Watts* @70C Maximum Voltage Rating _____ (not to exceed P X R ) Operating Temperature Range 100 Volts -55C to +150C 50 10 Leach-resistant nickel barrier under solder-plated wraparound Termination 25 70 150 Temperature in C *Note: With 1" square copper area as heat spreader. Physical Data TOP BOTTOM RECOMMENDED SOLDER PAD LAYOUT (Board Side) 0.250" .005" 0.125" .005" 0.020".005" 0.032" .005" Plating wrap-around 0.30" 7.6mm 0.090" .005" 0.08" (2.0mm) 0.030" .005" thickness SCHEMATIC 0.04" (1mm) General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print. General AdvancedNote Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 reserves 992 7900the * right Facsimile: 361 992 3377 in * product Website: specification www.irctt.comwithout notice or liability. TT electronics to make changes All information is subject to TT electronics' own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc SC3 Series Issue October 2008 www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11 High Power Dissipation High Power Dissipation SMT SMT ChipChip ResistorResistor SC3 Series Temperature Rise vs Pad Area Temperature Rise (C) 1000 100 10 2 100mm 200mm 2 1000mm 2 Termination Pad Area (each end) 1 watt 2 watts 3 watts Pulse Power Rating Power (watts) 100 10 1 0.1 1.0 10.0 Time (sec) Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com SC3 Series Issue October 2008 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) TT electronics plc 10. 11 High Power Dissipation SMT SC3 Series Chip Resistor High Power Dissipation SMT Chip Resistor Environmental Data Environmental Test Test Method Specification MIL-STD-202 Method 107 Condition B, -65C + 125C R 0.5% + 0.01 2x rated power for 5 seconds R 0.5% + 0.01 100 Hours, 150C R 0.5% + 0.01 MIL-STD-202 Method 106 R 0.5% + 0.01 Rated Power @ 70C for 1000 hours; 1.5 hours `on', 0.5 hours `off' R 1.0% + 0.01 1 hour @ -65C followed by Rated power for 45 minutes R 0.5% + 0.01 Resistance To Solder Heat MIL-STD-202 Method 210 260C, 5 seconds R 0.25% + 0.01 Solderability MIL-STD-202 Method 208 245C, 5 seconds 95% coverage Thermal Shock Short-time Overload High Temperature Exposure Moisture Resistance Load Life Low Temperature Operation Ordering Data Prefix SCW - SC3LF - 33R0 - F Model SC3 = 3 watt chip with standard Sn/Pb termination SC3LF = 3 watt chip with matte tin (Pb-free) termination Resistance Code Standard 4-digit resistance code Example: 33R0 = 33; 10K0 = 10,000 Resistance Tolerance Code J = 5%; G = 2%; F = 1% Packaging Available in both bulk and tape & reel. For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com SC3 Series Issue October 2008 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) TT electronics plc 10. 11