Resistors Low Value Flat Resistors Low Value Flat Make Possible Chip Resistor Welwyn Components Low Value Flat Chip Resistor Welwyn Components Chip Resistor Low Value Flat Chip Resistor Low Value Flat LRC/LRF Series LR Series Welwyn Components Chip Resistor LRC/LRF Series LR Series Standard 2512, 2010 and 1206 sizes Standard 2512, 2010 and 1206 sizes Resistance values down to 0.003 ohms Standard 2512, 2010 and 1206 sizes Standard 2512, 2010 and 1206 sizes Resistance values down to 0.003 ohms Leach resistant solder-plated copper Resistance values down to 0.003 ohms LRResistanceC/LRF Ser ivalueses down to 0.003 ohms Leachresistant solder-plated copper wrap-around wrap-around termination Leach resistant solder-plated copper wrap-around termination Leach resistant solder-plated copper Standard 2512, 2010 and 1206 sizes AEC-Q200 Low inductance - less than 0.2nH AEC-Q200 Qualified wrap-around termination Resistance values down to 0.003 ohms RoHS compliant and SnPb variants AEC-Q200 Qualified RoHS compliant and SnPb variants Low inductance - less than 0.2nH Leach resistant solder-plated copper wrap-around termination AEC-Q200 Qualified Low inductance - less than 0.2nH AEC-Q200 Qualified All Pb-free parts comply with EU 2011/65/EU (RoHS2) AllAll Pb-Pb-frfreeee partsparts ccomplyomply withwith EUEU DirDirectivectivee 2011/65/EU2011/65/EU amended amended b yb y(EU) (EU) 2015/863 2015/863 (R (RoHS3)oHS3) Electrical Data LR1206 LR2010 LR2512 Electrical Data Power rating at 70 C watts 0.5 1.0 1.5/2.0* LR(F)1206 LR(F)2010 LR(F)2512 Resistance range LR120ohms6 0R010 to 1LR201R 0 0R003 to 1RLR2512 0R003 to 1R Electrical Data Power rating 70C watts 0.5 1 2 Dielectric withstanding voltage volts 200 200 200 Power rating at 70 C watts 0.5 1.0 1.5/2.0* 1 Resistance range ohms R003 to 1R0 LR1206 LR2010 LR2512 TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) Resistance range ohms 0R010 to 1R 0R003 to 1R 0R003 to 1R 1 Resistance tolerance % <R01: 5, R01: 1, 2, 5 Power rating at 70 C watts 0.5 1.0 1.5/2.0* Resistance tolerance % R005 5%, >R005 1, 2, 5% Dielectric withstanding voltage volts 200 200 200 R05: 100, R025R047: <+200, R015-R024: <+300, TCR ppm/C Resistance range ohms 0R010 to 1R 0R003 to 1R 0R003 to 1R Temperature rise at rated power C 40 80 90 R01-R014: <+500, <R01: <+900 TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) Dielectric withstanding voltage volts 200 200 200 2 Dielectric withstand Pad and trace area for max powervolts rating 70 C mm 20030 30 100 Resistance tolerance % R005 5%, >R005 1, 2, 5% TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) Ambient temperature range C -55 to +150 2 *2 W atts with total solder pad and trace size of 300 mm Temperature rise at rated power C 40 80 90 2 Resistance tolerance % R005 5%, >R005 1, 2, 5% Values E24 preferred 2 Pad and trace area for max power rating 70 C mm 30 30 100 Temperature rise at rated power C 40 80 90 Temperature rise at rated power C 40 80 90 3 2 2 2 Pad / tPad andrace a tracerea area for max power rating 70 C mm mm30 30 100 30 300 100 Physical Data *2 W atts with total solder pad and trace size of 300 mm 2 No*2t e 1: W attsCon tawithct fa ctotaltory fsolderor value padtole andranc e tracecombin sizeations outside this of 300 mm range. Note 2: Many values = N x R001 and N x R005 up to N=10 are also Dimensions (mm) available. Note 3: Recommended minimum pad & adjacent trace area for each termination for rated dissipation on FR4 PCB Size L W H (max) D Physical Data Physical Data LR1206 3.200.305 1.630.20 0.8 0.480.25 Dimensions (mm) LR2010 5.230.38 2.640.25 0.84 0.480.25 Dimensions (mm) Size L W H (max) D LR2512 6.500.38 3.250.25 0.84 0.480.25 Size L W H (max) D LR1206 0.480.25 3.200.305 1.630.20 0.8 LR 1206 / 2010 / 2512 LR(F)1206 3.200.305 1.630.20 0.8 0.6 0.25 LR2010 5.230.38 2.640.25 0.84 0.480.25 LR(F)2010 5.230.38 2.640.25 0.84 0.6 0.25 W L LR2512 6.500.38 3.250.25 0.84 0.480.25 6.500.38 3.250.25 0.6 0.25 LR(F)2512 0.84 LR 1206 / 2010 / 2512 LR 1206 / 2010 / 2512 H W L W L D Solder Plating HH Nickel Barrier Layer Protective Overcoat Copper W raparound Low Value Flat Resistive Element Termination D Copper Termination D Solder Plating Alumina Substrate Solder Plating Chip Resistor Nickel Barrier Layer Protective Overcoat Nickel Barrier Layer Protective Overcoat Welwyn Components Copper W raparound LRC/LRF Series Resistive Element Copper W raparound Resistive Element Termination Copper Termination Termination Copper Termination Alumina Substrate Alumina Substrate Recommended Solder Pad Dimensions (mm) Marking A A B C LR parts are marked with the value code, where this is up to four characters (e.g.R025 ). For five character value LR(F)1206 2.0 4.0 1.25 codes the value in milliohms is marked, with indicating B decimal position (e.g.2m5 for value code R0025). General Note LR(F)2010 3.05 6.5 1.5 Welwyn Components 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 C TT electronics plc LR(F)2512 3.7 7.75 1.5 Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK General Note Welwyn Components reservesTelephone: the right +44 (0to) make1670 822181changes Facsimile:in product +44 specification (0) 1670 829465 without Email: notice info welwyn-tt.com or liability. Website: www.welwyn-tt.com 04.10 General Note A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. Welwyn Components reserves the right to make changes in product specification without notice or liability. TT electronics plc 23 General Note (%) A subsidiary of All informationWelwyn isComponents subject to Welwyn Limiteds own data Bedlington, and is conside Northumberlandred accurate NE22at time 7AA, of going UK to print. General Note BI Technologies IRC Welwyn AEC-Q200 Table 7 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.comMax. Typ. Website: 100www.welwyn-tt.com TT electronics04.10 plc Method TT Electronics reserves the right to make changes in product specification without notice or liability. (add R05) ( 1R0) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK ref Test All information is subject to TT Electronics own data and is considered accurate at time of going to print. All information is subject to TT Electronics own data and is considered accurate at time of going to print. 80 www.ttelectronicsresistors.com 23 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 04.10 3 High Temp. Exposure MIL-STD-202 Method 108 R% 0.5 0.2 www.ttelectronics.com/resistors 4 Temperature Cycling JESD22 Method JA-104 R% 0.25 0.1 TT Electronics plc 60 23 TT Electronics plc 6 Moisture Resistance MIL-STD-202 Method 106 0.5 0.2 12.15 R% 03.21 40 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 Power RatingLRLR CC 1206 0.5 w 1206 0.25 w attatt LRC 2010 1 wLRC 2010 0.5 wattatt LRC 2512 1 wLRC 2512 2 w attatt Recommended Solder Pad Dimensions (mm) A Low Value Flat A B C Low Value Flat Chip Resistor Chip Resistor LR1206 2.0 4.0 1.25 Make Possible B LR Series LR2010 3.05 6.5 1.5 LR Series C LR2512 3.7 7.75 1.5 Performance Data (%) AEC-Q200 Table 7 Max. Typ. 100 Method (add R05) ( 1R0) ref Test 80 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 60 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 40 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 20 14 Vibration MIL-STD-202 Method 204 R% 0.5 0.05 0 25 70 150 (C) 15 Resistance to Soldering Heat MIL-STD-202 Method 210 0.25 0.05 R% Ambient temperature 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 Leach Resistance Solder dip at 250C 90s minimum Note: 1. Although 2010 and 2512 sizes have passed temperature cycling and thermal shock, it is in general not recommended that ceramic chips this large be used on FR4 in a severe temperature cycle environment due to the possibility of solder joint fatigue. Full AEC-Q200 qualification applies only to ohmic values R01. OOrrddereinrgi PnrgocePdruorec edure Example: LRF2512 at 10 milliohms (hence flip-chip mounted) and 2% tolerance on a reel of This product has two valid part numbers: 1800 pieces L R F 2 5 1 2 R 0 1 G W E uropean (Welwyn) Part Number: LRF1206-R02FW (1206, 20 milliohms 1%, Pb-free) Type L R F 1 2 0 6 - R 0 2 F W Mounting 1 2 3 4 5 Conventional (element up) Values > R025 F Flip-chip (element down) Values < R025 1 2 3 4 5 Size Type Size Value Tolerance Termination & Packing Value (use IEC62 code) 1206 F = 1% W Pb-free, standard packing LR = Conventional orientation E24 = 3/4 (values >R025) Tolerance (use IEC62 code) 2010 characters G = 2% T1 Pb-free, 1000/reel (non-standard) R = ohms F 1% 2512 J = 5% PB SnPb finish, standard packing LRF = Flip-chip orientation G 2% (values R025) T1PB SnPb finish, 1000/reel (non-standard) J 5% Standard packing is tape & reel 1206 & 2010 3000/reel Packing 2512 1800/reel 1206 or 2010 3000/reel W Standard Tape 2512 1800/reel USA (IRC) Part Number: LRC-LRF1206LF-01-R020-F (1206, 20 milliohms 1%, Pb-free) T1 All sizes 1000/reel L R C - L R F 1 2 0 6 L F - 0 1 - R 0 2 0 - F 1 2 3 4 5 6 7 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 1 2 3 4 5 6 7 Packing Family Model Size Termination TCR Value Tolerance LRC 1206 Omit for SnPb F = 1% Standard packing is tape & reel LR = Conventional orientation 4 characters 01 = standard (values >R025) R = ohms 2010 LF = Pb-free (100ppm/C G = 2% Pb-free APllb s-firzeees 100Pb-f0r/ereeel Pb-free values R05) 2512 J = 5% 1206 & 2010 300Pb-0fr/ereeel LRF = Flip-chip orientation SnPb Pb-free (values R025) 2512 1800/reel Pb-free GeneGenerral Notal Notee BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All inAll infformation is subormation is subject to TT Electronics own datject to TT Electronics own data and is considered accura and is considered accuatrate at time of going to print.e at time of going to print. www.ttelectronicsresistors.com www.ttelectronics.com/resistors TT Electronics plc TT Electronics plc 03.2112.15 Power Rating