Resistors Low Value Flat Low Value Flat Resistors Low Value Flat Resistors Make Possible Low Value Flat Make Possible Chip Resistor Welwyn Components Chip Resistor Welwyn Components Low Value Flat Chip Resistor Welwyn Components Chip Resistor Low Value Flat Chip Resistor Welwyn Components Chip Resistor Low Value Flat Chip Resistor Low Value Flat Low Value Flat LRC/LRF Series LRC/LRF Series LR Series LR Series Chip Resistor Welwyn Components LRC/LRF Series Welwyn Components LR SeriesChip StandaResird 2512,sto 2010r and 1206 sizes LRC/LRF 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, 2010Resistance and 1206 values sizes down to 0.003 ohms Standard 2512, 2010 and 1206 sizes Standard 2512, 2010 and 1206 sizes Resistance values down to 0.003 ohms Resistance values down to 0.003 ohms Leach resistant solder-plated copper Leach resistant solder-plated copper LRResistanceC/LRF Ser ivalueses down to 0.003 ohms Resistance values down to 0.003 ohms LRResistanceC/LRF Ser ivalueses down to 0.003 ohms Leachresistant solder-plated copper wrap-around Leachresistwrap-aant solderoundr-plat terminationed copper wrap-around wrap-around termination Leach resistant solder-plated copper wrap-around termination Leach resistant solder-plated copper Standa Leachrd 2512,resistant 2010 solde andr-plated 1206 sizes copper Standard 2512, 2010 and 1206 sizes AEC-Q200 AEC-Q200 Low inductance - less than 0.2nH Low inductance - less than 0.2nH wrap-a AEC-Q200round Qualifiedtermination wrap-around termination Resistance values down to 0.003 ohms Resistance values down to 0.003 ohms RoHS compliant and SnPb variants RoHS compliant and SnPb variants AEC-Q200 Qualified AEC-Q200 Qualified RoHS compliant and SnPb variants Low Low inductance inductance - less - less than than 0.2nH 0.2nH Leach resistant solder-plated copper Leach resistant solder-plated copper wrap-awrap-aroundround termination termination AEC-Q200 Qualified AEC-Q200 Qualified Low Low inductance inductance - less - less than than 0.2nH 0.2nH AEC-Q200 Qualified All Pb-free parts comply with EU 2011/65/EU (RoHS2) 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 Electrical Data LR1206 LR2010 LR2512 LR1206 LR2010 LR2512 Electrical Data Electrical Data Power rating at 70 C watts 0.5 1.0 1.5/2.0* Power rating at 70 C watts 0.5 1.0 1.5/2.0* LR(F)1206 LR(F)2010 LR(F)2512 LR(F)1206 LR(F)2010 LR(F)2512 Resistance range LR120ohms6 0R010 to 1LR201R 0 0R003 to 1RLR2512 0R003 to 1R Resistance range ohms 0R010 to 1R 0R003 to 1R 0R003 to 1R LR1206 LR2010 LR2512 Electrical Data ElePcowter rircating 70Cal Data watts 0.5 1 2 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* Dielectric withstanding voltage volts 200 200 200 1 Power rating at 70 C watts 0.5 1.0 1.5/2.0* Resistance 1range ohms R003 to 1R0 Resistance range ohms R003 to 1R0 LR1206 LR2010 LR2512 TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) Resistance range ohms LR1200R0160 to 1R LR2010R0030 to 1R LR25120R003 to 1R 1 TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) ResistRanesistance rancge etolerance % ohms 0R010 to 1R <R01: 5, R01: 1, 2, 50R003 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% Power rating at 70 C watts 0.5 1.0 1.5/2.0* Dielectric withstanding voltage volts 200 200 200 Resistance tolerance R05: 100, R025R047: <+200, R015-R024: <+300, % 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 TCR Temperature rise at ratedppm/C power C 40 80 90 Resistance range ohms 0R010 to 1R01-R014: <+500, <R01: <+900R 0R003 to 1R 0R003 to 1R TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) 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 Dielectric withstanding voltage volts 200 2 200 200 Resistance tolerance % R005 5%, >R005 1, 2, 5% Dielectric withstand Pad and trace area for max powervolts rating 70 C mm 20030 30 100 ResistaTnCceR tolerance p%pm/ C 100 (R005Conta 5%,ct fa c>R005tory fo r1, v a2,lu e5% below 0.050 ohms) Ambient temperature range C -55 to +150 2 TCR ppm/ C 100 (Contact factory for value below 0.050 ohms) Ambient temperature range*2 W atts with total solder padC and trace size of 300 mm -55 to +150 Temperature rise at rated power C 2 40 80 90 2 Resistance tolerance % R005 5%, >R005 1, 2, 5% TempeVraluesature rise at*2 ra tWedatts pow wither total solder pad and trace size ofC 300 mm 40 E24 prefer8r0ed 90 2 Resistance tolerance % R005 5%, >R005 1, 2, 5% 2 Values E24 preferred Pad and trace area for max power rating 70 C mm 30 30 100 Temperature rise at rated power 2 C 40 80 90 Temperature rise at rated power C 40 80 90 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 3 2 2 Pad / tPad andrace a tracerea area for max power rating 70 C mm mm30 30 100 30 300 100 *2 W atts with totalP solderhysi padca andl D traceata 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 2 Dimensions (mm) Note 1: Contact factory for value tolerance combinations outside this range. Note 2: Many values = N x R001 and N x R005 up to N=10 are also *2 W atts with total solder pad and trace size of 300 mm available. Note 3: Recommended minimum pad & adjacent trace area for each termination for rated dissipation on FR4 PCB 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 DSaizeta L W H (max) D Physical Data LR1206 3.200.305 1.630.20 0.8 0.480.25 PhysDimensionsical D(mm)LR1206ata 3.200.305 1.630.20 0.8 0.480.25 LR2010 5.230.38 2.640.25 0.84 0.480.25 Dimensions (mm) Dimensions (mm) Size LR2010 L W H (max) D 5.230.38 2.640.25 0.84 0.480.25 Dimensions (mm) LR2512 6.500.38 3.250.25 0.84 0.480.25 Size L W H (max) D Size L W H (max) D LR1206 LR2512 6.500.38 3.250.25 0.480.25 3.200.305 1.630.20 0.8 0.84 0.480.25 Size L W H (max) D LR 1206 / 2010 / 2512 LR(F)1206 3.200.305 1.630.20 0.8 0.480.25 LR1206 3.200.305 1.630.20 0.8 0.480.25 LR2010 5.230.38 2.640.25 0.84 0.480.25 LR 1206 / 2010 / 2512 LR(F)1206 3.200.305 1.630.20 0.8 0.480.25 LR(F)2010 5.230.38 2.640.25 0.84 0.480.25 LR2010 5.230.38 2.640.25 0.84 0.480.25 W L LR2512 6.500.38 3.250.25 0.84 0.480.25 LR(F)2010 5.230.38 2.640.25 0.84 0.480.25 6.500.38 3.250.25 LR(F)2512 0.84 0.480.25 W L LR2512 6.500.38 3.250.25 0.84 0.480.25 LR(F)2512 6.500.38 3.250.25 LR 1206 / 2010 / 250.8412 0.480.25 LR 1206 / 2010 / 2512 H LR 1206 / 2010 / 2512 LR 1206 / 2010 / 2512 H W L W L W L W D L Solder Plating HH D Nickel Barrier Layer Solder Plating Protective Overcoat H H Copper W raparound Nickel Barrier Layer Low Value Flat Resistive Element Protective Overcoat Termination D Copper Termination Copper W raparound D Resistive Element Low Value Flat Solder Plating Alumina Substrate Solder Plating Termination Chip Resistor D Copper Termination D Nickel Barrier Layer Solder Plating Protective Overcoat Nickel Barrier LayerAlumina Substrate Solder Plating Protective Overcoat Chip Resistor Welwyn Components Copper W raparound LRC/LRF Series Resistive Element Nickel Barrier LayerCopper W raparound Protective OvercoatResistive Element Nickel Barrier Layer Termination Protective Overcoat Copper Termination Termination Welwyn Components Copper W raparound LRC/LRF Series Resistive ElementCopper Termination Alumina Substrate Copper W raparound Resistive Element Alumina Substrate Termination Copper Termination Termination Copper Termination Alumina Substrate Alumina Substrate Recommended Solder Pad Dimensions (mm) A A B C Recommended Solder Pad Dimensions (mm) A LR(F)1206 A 2.0 B 4.0 C 1.25 B LR(F)1206 General Note 2.0 4.0 1.25 LR(F)2010 3.05 6.5 1.5 Welwyn Components reserves the right to make changes in product specification without notice or liability. B All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of General Note C TT electronics plc LR(F)2010 3.05 6.5 1.5 Welwyn Components reserves the right to make changes in product specification without notice or liability. LR(F)2512 3.7 7.75 1.5 Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK General NoteAll information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of C 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 TT electronics plc General Note LR(F)2512 3.7 7.75 1.5 A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. TT electronics plc Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 04.10 23 Welwyn Components reserves the right to make changes in product specification without notice or liability. 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. GeneralGener Noteal Note A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. 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 Welwyn Components reserves the right to make changes in product specification without notice or liability. TT electronics plc Method TT Electronics reserves the right to make changes in product specification without notice or liability. 23 (add R05) ( 1R0) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK (%) General Noref te Test All informationWelwynAll information is su isComponents subject tobject to TT Electronics own da Welwyn Limiteds own data Bedlington, and ist a and is considered accuconside Northumberlandred accurate NE22atra timete at time of going to print. 7AA, of going UK to print. A subsidiary of 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:AEC-Q200 +44 (0Table 7) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 04.10 04.10 Telephone:3 +44 (0) 1670High 822181Temp. Exposu Facsimile: +44re MIL-STD-202 Method 108(0) 1670 829465 Email: info welwyn-tt.comMax. R% 0.5Typ. W0.2ebsite: 100www.welwyn-tt.com TT electronics plc www.ttelectronics.com/resistors Method (add R05) ( 1R0) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK ref Test All information is su4 bject to TT Electronics own daTemperature Cyclingta and is considered accuJESD22 Method JA-104rate at time of going to print.R% 0.25 0.1 TT Electronics plc 60 23 TT Electronics plc 80 23 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com www.ttelectronicsresistors.com04.10 3 High Temp. Exposure MIL-STD-202 Method 108 R% 0.5 0.2 6 Moisture Resistance MIL-STD-202 Method 106 0.5 0.2 12.15 R% 10.19 4 Temperature Cycling JESD22 Method JA-104 R% 0.25 0.1 40 TT Electronics plc 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 60 23 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 12.15 40 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 Power Rating 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 Resistors Chip Resistor LR1206 2.0 4.0 1.25 Make Possible Low Value Flat Chip Resistor 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. OOrrddereinrgin PrgocePdruorec 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) LR = Conventional orientation 1206 F = 1% W Pb-free, standard packing E24 = 3/4 Tolerance (use IEC62 code) (values >R025) 2010 characters G = 2% T1 Pb-free, 1000/reel (non-standard) F 1% R = ohms 2512 J = 5% PB SnPb finish, standard packing LRF = Flip-chip orientation G 2% (values R025) Standard packing is tape & reel J 5% 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- sfirezees 1000Pb-fre/reee l Pb-free values R05) 2512 J = 5% 1206 & 2010 3000Pb-fre/reee l 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 10.1912.15 Power Rating