Resistors Low Resistance Metal Alloy Resistor LRMA Series Resistance range 0.5m to 500m Low Resistance Metal Alloy Resistor High temperature operation to 170C Low thermal EMF version LRMA Series High power version * Current Resistance 1 to 100m sensingrange for power electronics * High temperature operation to 170C RoHS compliant & halogen free * Low thermal EMF version qualified * AEC-Q200 High power version * * Current sensing for power electronics RoHS compliant & halogen free All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) Electrical Data LRMA Version Size Power rating @70C Overload rating (5s) Resistance range W W m Standard values m 1 Resistance tolerance TCR (25 to 125C) Ambient temperature Insulation resistance Element alloy % ppm/C C M 2010 1.5 7.5 5 to 100 5, 6, 10, 15, 20, 50, 100 R01: 75 Standard values W W m Resistance tolerance TCR (25 to 125C) 120, 130, 140, 150, 180, 200, 220, 240, 250, 270, 280, 300, 330, 390, 400, 500 >R001 & <R01: 100, 0.5 1 5 2.5 1 to 25 1 to 50 1, 2, 3, 5, 6, 8, 1, 1.2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, m 9,10, 20, 25 15, 18, 20, 22, 25, 30, 39, 40, 50 % 1 ppm/C Ambient temperature Insulation resistance Element alloy 50 100 M 0.51, 1, 5 R001: 275 -55 to 170 >100 Mn-Cu R01: 2, >R01: 1 R01: 10, >R01: 5 0.5 to 60 0.5, 0.75, 1, 1.5, 2, 3.5, 5, 10, 20, 25, 30, 40, 50, 60 0.51, 1, 5 R01: 75, >R001 & <R01: 100 R001: 275 -55 to 170C >100 Notes: 1. Non-standard values and 0.5% tolerance may be available for high volume requirements. Physical Data R10: 3, >R10: 2 R10: 15, >R10: 10 0.5 to 500 1, 1.5, 2, 3, 3.5, 4, 5, 6, 7, 8, 10, 11, 12, 0.5, 0.75, 1, 1.1, 1.5, 2, 2.5, 3, 4, 5, 6, 6.8, 7, 8, 9, 10, 11, 12, 13, 15, 18, 20, 22,25, 27, 30, 33, 39, 40, 45, 47, 50, 57, 60, 68, 70, 75, 80, 85, 90,100, 15, 18, 20, 25, 30, 33, 35, 40, 50, 100 M (Low thermal EMF) 1206 2512 0805 P (Power) 2512 R01: 2, >R01: 1 R01: 10, >R01: 5 1 to 100 Cu-Ni LRMA Version Size Power rating @70C Overload rating (5s) Resistance range T (Standard) 2512 <R001: 200 R001: 50 Cu-Ni / Mn-Cu 0612 1 to 3 1, 3 N (Inverse) 0815 12 5 3 to 30 3, 4, 5, 10, 15, 20, 25, 30 1225 3 15 2 to 40 2,3,4,5,10,15, 20,25,30,40 100 Mn-Cu / Cu-Ni 2 2. Requires 300mm copper pad & trace area (All dimensions in mm and nominal weight in mg) Size 0805 0805 R002 1206 <R002 1206 R002 0612 0815 2010 2512 <R001 2512 R001 & R0031 2512 >R0031 1225 L W 2.0 0.1 1.25 0.1 3.2 0.2 1.6 0.2 1.70.2 3.20.2 2.1 0.25 3.75 0.3 C 0.4 0.2 0.6 0.2 1.1 0.3 0.5 0.3 0.40.2 0.5 0.2 t Wt 0.6 0.2 5.5 0.75 0.2 0.6 0.2 0.6 0.2 0.7 0.2 5.0 0.2 2.5 0.2 6.4 0.2 3.2 0.2 0.6 0.3 0.6 0.2 2.6 0.2 2.0 0.2 0.65 0.25 3.2 0.3 6.4 0.3 0.5 0.2 18.3 12.9 14.1 35.6 57 to 63 0.9 0.2 0.9 0.2 70 Note 1 - This applies to LRMAT2512 and LRMAM2512. For LRMAP2512 this threshold is R004 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. BI Technologies IRC Welwyn www.ttelectronics.com/resistors (c) TT Electronics plc 05.20 Resistors Low Resistance Metal Alloy Resistor Low Resistance Metal Alloy Resistor LRMA Series LRMA Series Construction Coating (UL94-V0) Copper electrode with nickel then tin plating Low TCR resistance alloy plate Marking The components are marked with ohmic value, e.g. "R002" = 2m, "R010" = 10 m. Due to space restrictions, for LRMAM1206-R001, "01" = 1m is used, and for LRMAM0805, "2" = 2m, "010" = 10 m are used. Solvent Resistance The component is resistant to all normal industrial cleaning solvents suitable for printed circuits. Performance Data Load at rated power (cyclic load, 1000 hours at 70C) Short term overload (5 x rated power for 5s) Humidity (1000 hours, 85C, 85%RH) Temperature cycle (-40 to +125C, 1000 cycles, 15 minute dwell) Resistance to solder heat (260C 5C for 20s 1s) Solderability (245C 5C for 2s 0.5s) Dry heat (1000 hours at 170C) Low temperature storage (1000 hours at -55C) Substrate bending (board 1.6mm, fulcrum spacing 90mm, deflection 2mm) Insulation resistance (1 minute @ 100Vdc) R R R R R R R R Maximum (%) Typical (%) 0805: 1.5 Others 1 0.5 0805: 1 Others 0.5 0805: 1 Others 0.5 0.5 >95% coverage 0805: 1.5 Others 0.5 0.5 0805: 1 Others 0.5 >100M 0.3 0.15 0.15 0.15 0.3 0.3 0.15 0.3 Thermal Performance & Mounting Typical Temperature Rise Temperature Rise (C) Proportion of Pr Temperature Derating 100% 80% 60% 40% 20% 0% -30 20 70 120 Hot spot 100 80 60 40 Joint 20 0 0% 170 Ambient Temperature (C) Reference Pad Dimensions (mm) Size a b L 3.8 0.7 0.7 0612 1.4 1.15 1.2 0805 1.8 2.3 1.0 1206 <R002 1206 R002 1.8 1.7 1.6 7.9 1.5 0.9 0815 3.4 1.5 3.5 2010 4.0 3.1 1.3 2512 R0031 4.0 2.1 4.1 2512 >R0031 7.0 1.0 2.3 1225 120 20% L b a Current 40% 60% 80% 100% Proportion of Pr Sense The temperature rise shown is highly dependent on mounting conditions. Reference conditions assume 20 copper with thermal vias to multiple layers. The self-heating in the current tracks should be kept negligible, or allowed for by temperature derating. Note 1 - This applies to LRMAT2512 and LRMAM2512. For LRMAP2512 this threshold is R004 Standard 4-terminal probe pitches for measuring unmounted parts are 2.8 x 1.7mm (0612), 0.4 x 1.83mm (0805), 0.4 x 2.8mm (1206), 1.2 x 4.5mm (2010), 1.5 x 5.8mm (2512), and 5.4 x 3.4mm (1225). All probe location tolerances 0.02mm. 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. BI Technologies IRC Welwyn www.ttelectronics.com/resistors (c) TT Electronics plc 05.20 Resistors LowResistance Resistance Metal Metal Alloy Low AlloyResistor Resistor LRMA LRMA Series Series Packaging Bottom Tape Wr C B A Tr Paper Tape Size Tape 0805 Paper A 1.6 0.15 0612, Paper 1206 2.0 0815 Emboss W 8.0 0.2 0.2 8.0 E 1.75 0.05 0.1 P1 P2 0.1 0.1 4.0 2.0 0.1 +0.1/-0 C Wr 178 2 60 1 13 1 9 1 11.4 178 2 60 1 13 1 9 1 11.5 178 2 60 1 13 1 13 1 15.4 0.15 178 2 60 1 13 1 13 1 15.4 0.15 178 2 0.84 1.75 0.1 0.1 0.05 0.1 +0.1/-0 1.5 0.84 2.6 4.5 12 5.5 1.75 4.0 2.0 4.0 1.55 1.1 5.5 1.75 4.0 1.5 0.85 5.5 1.75 1.5 0.85 5.3 12 0.2 0.05 0.05 0.2 0.2 0.05 6.9 12 0.1 +-0.1 0.2 4.0 2.0 0.1 0.05 0.1 0.1 0.05 0.05 +0.1/-0 0.1 0.1 0.05 0.05 +0.1/-0 4.0 2.0 4.0 A 0.1 3.5 0.1 4.0 t 1.5 0.05 0.2 2.0 D0 0.2 0.2 4.0 P0 4.0 0.2 0.2 3.6 F 3.5 0.15 2.8 2010 Emboss 0.2 2512 Emboss 3.6 0.2 1225 Storage B 2.4 0.1 0.1 B Tr 1 1 2 2 60 1 13 1 13 1 15.4 2 Conditions: 5C to 35C and 40% to 75%RH Shelf life: 2 years from manufacture Processing LRMA series resistors are suitable for both wave and IR reflow soldering. The recommended reflow profile for Pbfree SAC305 alloy (Sn 96.5%, Ag 3%, Cu 0.5%) soldering is as follows: Pre-heat: 60s to 120s at 150C to 180C Soldering: 20s to 40s at 230C Peak: 5s at 255C to 260C Ordering Procedure Ordering Procedure Example: LRMA low thermal EMF version in 2512 size and at 10 milliohms and 1% tolerance packed in tape. 1 Example: LRMAM2512-R01FT4 (LRMA2512, low L Rthermal M A M EMF, 2 5 1 210- milliohms R 0 1 F T 41%, Pb-free) Type Version T L R P M Size M 1 A M 2 2 N 5 1 2 -1 R 0 3 F 4 5 T 4 6 1 2 3 4 5 6 Type Version Size Value Tolerance Packing Value (use IEC62 code) Tolerance (use IEC62 code) LRMA T Standard 0612 3 to 6 P Power 0805 characters M Low thermal EMF 1206 R = ohms Packing N Inverse 0815 T5 0612, 0805, 1206 5000/reel 2010 Tape Standard T4 0815, 2010, 2512 4000/reel 2512 Note 1: For values which require 6 characters, e.g. R00075, the hyphen is omitted. 1225 F J 1 1% 5% Tape & reel D = 0.5% F = 1% T5 0612, 0805, 1206 5000/reel J = 5% T4 0815, 2010, 2512, 1225 4000/reel Note 1: For values which require all 6 characters, e.g. R00075, the hyphen is omied. 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. BI Technologies IRC Welwyn www.ttelectronics.com/resistors (c) TT Electronics plc 05.20