Resistors Low Resistance Metal Alloy Power Resistors LRMAP3920 Resistance range 0.2m to 3m Excellent long-term stabilit y Stand ard power rating up to 5W Thermal substrate power rating up to 10W Current sensing for power electronics AEC-Q200 qualified AllAll partsparts araree Pb-Pb-frfreeee andand ccomplyomply withwith EUEU DirDirectivectivee 2011/65/EU2011/65/EU amendedamended bbyy (EU)(EU) 2015/8632015/863 (R(RoHS3)oHS3) Electrical Data LRMAP3920 Alloy type A B C Resistance value m 0.2 0.3 0.5 0.7 1 1 1.5 2 3 1 Power rating (standard), P W 5 4 5 4.5 4 3 r120 2 Power rating (thermal substrate), P W 10 7 5 rts70 1 Overload rating (5s) W 25 20 25 23 20 15 Continuous pulse energy J 11 13 8 6 4 12 9 6 4 Internal thermal impedance, R C/W 2.5 4 6 9 12 7 11 14 17 thi Resistance tolerance % 1 TCR (20 to 60C) ppm/C 200 150 50 Thermal EMF V/C <2 Inductance nH <3 Ambient temperature C -55 to 170 Note 1: Mounted on FR4 board. See Thermal Data and Mounting section for details. Note 2: Mounted on thermal substrate. See Thermal Data and Mounting section for details. Physical Data Dimensions in mm and weight in mg L1 H L A D B T Wt. Type +0.2 +0.3 0.3 max 0.5 0.1 nom nom -0.3 -0.2 LRMAP3920A-R0002 4.0 1.50 694 LRMAP3920B-R0003 1.43 608 LRMAP3920B-R0005 0.85 380 LRMAP3920B-R0007 0.62 271 LRMAP3920B-R001 10.0 5.2 0.6 2.0 0.5 0.43 188 5.0 LRMAP3920C-R001 1.36 542 LRMAP3920C-R0015 0.90 361 LRMAP3920C-R002 0.67 277 LRMAP3920C-R003 0.45 180 Marking The component is laser marked with 3920, alloy type, ohmic value and tolerance. Solvent Resistance The component is resistant to all normal industrial cleaning solvents suitable for printed circuits. Construction The component is formed from a continuous band of E-beam welded precision resistive strip. Various alloys are used based on the resistance value. 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.ttelectronics.com/resistors TT Electronics plc 06.20Low Resistance Metal Alloy Power Resistors LRMAP3920 Performance Data R% Test Method Typical Maximum Load Life 1000 hours, cyclic load at P 0.5 1.0 r120 Short Term Overload 5 seconds, 5 x P 0.1 0.5 r120 High Temperature Exposure 1000 hours, 170C 0.3 1.0 Temperature Cycle 1000 cycles, -55 to +125C, 15 minute dwell 0.1 0.5 Low Temperature Storage 1000 hours, -55C 0.1 0.2 Biased Humidity 1000 hours, 85C, 85%RH 0.2 1.0 Moisture Resistance MIL-STD-202 method 106 0.1 0.2 Vibration MIL-STD-202 Method 204 0.1 0.2 Mechanical Shock MIL-STD-202 Method 213 0.1 0.5 Board Flex AEC Q200-005 No damage Terminal Strength AEC Q200-006 No damage Resistance to Solder Heat MIL-STD-202 Method 210 0.3 0.5 Solderability J-STD-002 95% coverage Resistance to Solvents MIL-STD-202 Method 215 No damage Thermal Data & Mounting Nominal Reference Mounting Pad Dimensions (mm) a b L 6.2 2.7 5.6 Hotspot Range Hotspot Range Terminal Range Terminal Range FR4 board details: 102x51mm, high T FR4 board with 70m (2 ounce) inner and outer Cu planes or similar substrate, such that terminal g temperature is maintained at 120C. Thermal substrate details: DBC or similar thermal substrate, such that terminal temperature is maintained at 70C. 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.ttelectronics.com/resistors TT Electronics plc 06.20