Resistors Low Value Flat Low Value Flat Resistors Low Value Flat Resistors Low Chip ValueResistor Flat Chip Resistor Low Value Flat Chip ResistorResistor Chip Resistor Low Value Flat Chip Chip Resistor Low Value Flat Chip Resistor Low Flat LowValue Value Flat LRC/LRF Series LRC/LRF Series LR Series LR Series Chip Resistor LRC/LRF Series * Standard 2512, 2010 andand 1206 sizes Chip Resistor LR Series LRC/LRF Series * Standard 2512, 2010 1206 sizes O -- i A i SZ Z L i i SL-L i 3/4Li i 'I i S O O -- i A i SZ Z L i i SL-L i 3/4Li i 'I i S Make Possible Make Possible Welwyn Components Welwyn Components Welwyn Components Welwyn Components Welwyn Components Welwyn Components Standard 2512, 2010 andand 1206 sizes *2512, Resistance values down to 0.003 ohms Standard 2010 and 1206 sizes *2010 Resistance values down to 0.003 ohms * Standard 2512, 1206 sizes * Standard 2512, 2010 1206 sizes Standard 2512, 2010 andand 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 *LRC/LRF Resistance values down to 0.003 ohms Series Resistance Resistance values down to 0.003 ohms *LRC/LRF values down to 0.003 ohms copper Series Leach resistant solder-plated copper wrap-around wrap-around termination Leach resistant solder-plated copper wrap-around wrap-around termination Leach resistant solder-plated copper wrap-around termination ** Leach resistant solder-plated copper ** Leach resistant solder-plated copper Standard 2512, 2010 andand 1206 sizes Standard 2512, 2010 1206 sizes AEC-Q200 AEC-Q200 * Low inductance less than 0.2nH * Low inductance less than 0.2nH AEC-Q200 Qualified termination termination * wrap-around Resistance values down tovariants 0.003 ohms * wrap-around Resistance values down to 0.003 ohms RoHS compliant and SnPb variants RoHS compliant and SnPb * AEC-Q200 Qualified *- AEC-Q200 Qualified RoHS compliant and SnPb variants * Low inductance less than 0.2nH * Low inductance - less than 0.2nH * * * * Leach resistant solder-plated copper * Leach resistant solder-plated copper wrap-around termination wrap-around termination * AEC-Q200 Qualified AEC-Q200 Qualified * Low inductance - less than 0.2nH Low inductance - less than 0.2nH * AEC-Q200 Qualified AEC-Q200 Qualified AllEU Pb-free comply EU 2011/65/EU (RoHS2) Pb-free partsparts comply withwith EUamended (RoHS2) All Pb-free parts complyAll with Directive 2011/65/EU by2011/65/EU (EU) 2015/863 (RoHS3) Electrical Data Electrical Data Electrical Data Electrical Data Power rating at 70 C LR1206 LR2010 LR2512 LR1206 LR2010 LR2512 w a t t s 0 . 5 1 . 0 1 2.0* Power rating at 70 C watts 0.5 1.0 1.5/2..50/* LR(F)1206 LR(F)2010 LR(F)2512 LR(F)1206 LR(F)2010 LR(F)2512 R 03 R0t0o31tRoLR2512 1RLR25120R000R30t0o3 1to ResistaRnecseistraanncgee range ohLR1206 msohms 0R0100R0to101LR2010 Rto 1LR2010 0R00 R 1R LR1206 rating @70C watts PowerPower rating @70C watts 0.5wa0.5 1 1 200 2 21.5/2.0* D i e l e c t r i c w i t h s t a n d i n g v o l t a g e v o l t s 2 0 0 2 0 0 P o w e r r a t i n g a t 7 0 C t t s 0 . 5 1 . 0 200 to 1 200 200 PowerResistance rating at 1range 70 CD1ielectric withstanding voltage watts 0v.o5lts .0 1.5/2.0* 1R0 ohmsohms R003R003 to 1R0 Resistance range p 1LR2010 0o 0 (tC nttto aacc1ttRofaryctfoorry vfo a0b lR uee0LR2512 lo 5h 0m osh)ms) Rnecseistraanncgeetolerance rangTeCR 1 TCR ohms 0Rp0LR1206 R/p0tLR1206 1m 01/Rt oC 1R<R01:5,10 0 Rn0LR2010 0 3c1 0bow 3e1 t0R ow p10m C 00 (C ao f5 a0lrR uve0LR2512 lo .0150R0.0o % R01: 1, 2, Resistance R e s i s t a o h m s 0 o R 0 0 3 t o R 0 3 t 1 % 5, R01: 1, 2, 51.R005 Resistance Powtolerance er rating at 70 C watts 0.<R01: 5% 0 1.2, 5/2 .0* R e s i s t a n c e t o l e r a n c e 5%, >R005 1, 5% PowerDriealtein g a t 7 0 C w a t t s 0 . 5 1 . 0 1 . 5 / 2 . 0 * ctric withsRtaen gcevotlotalegreance volts 200 R025-R047: <+200, 2R015-R024: 00 5%, >R005 200 R05: 100, <+300, sid stianna R005 1, 2, 5% DielecTCR tR riecsw ge voltsohmR05: 200R0% 0R0 100, <+200,20R015-R024: ppm/C istitahnscteanradningge volTte s 01R025-R047: 0 tC o 1R 003 to 1R <+300, 02R00003 to 1R mperature rise at ratedppm/C power 8000R.0 90 TCR R01-R014: ResistT aC ncRe range ohpm s / C 0R010 tC o 11 R00 (Cont4a<+500, R 3ryto Rvalue b8 05 003 oto 1R pm ct04f<R01: a0c0t0o<R01: fo1 r<+900 el0ow hm s) T e m p e r a t u r e r i s e a t r a t e d p o w e r 0 90 R01-R014: <+500, <+900 TCR Dielectric withstanding voltage ppm/ C volts 10200(0C2ontact factory for v2a0lu0e below 0.050 ohm2s)00 Dielectric withstand volts 200 Pad and trace area for max power rating @ 70 C mm 30 30 100 DielecRtreiscwithstand nldeirnagncveoltag e area for max power lts % 2mm 00 2 200>R005 1, 2,30 200 isw taitnhcsetato R005 5% Dielectric volts 200 trace rating @ 70 C vop 30ct fa5%, 100 ResistAmbient aTnC ceR toletemperature rance Pad and pm/ C 100R005 (Conta5%, c>R005 tory for1,va2, lue5% below 0.050 ohms) range C ppm/% 2 00 (Contact -55 TCR Tem C of 1 ctto or+150 y for 8 va0lue below 0.050 ohm9s0) Ambient temperature C and trace -55 tofa+150 size perature risrange e at*2 ratW edatts powwith er total solder pad C 300 2mm 40 2 lreartaW epowwith % mm 40 R005 5%, 1, 2, 5% TempeValues rRaetsuisretarniscee atot*2 endcatts er total solder pad and trace size of C 300 80 >R005 90 E24 preferred 2 ResistPad anceand toletrace rancearea for max power rating @ 70 C %mm2 R005 5%, >R005 1, 2, 5% Values E24 preferred 30 30 100 2 T e m p e r a t u r e r i s e a t r a t e d p o w e r C 4 0 8 0 90 Temperature rise atmax rated powerrating @ 70 C C 40 80 90 Pad and trace area for power mm 30 30 100 Temperaturerise riseatarated t ratepower d power C 40 80 Temperature C 40 80 90 90 2 2 3 2 Pad and trace area for max power rating @ 70 C mm 30 30 100 mm 30 100 300 Pad / trace area *2 W atts3 with total solder pad and trace size 2 of 300 2mm 2 Pad and trace max power rating @ 70 C of 30 30 mm300 mm mm 30 100 300 100 trace area area *2Pad W/atts with totalfor solder pad and trace size 2 Note Contact value pad - tolerance combinations outside this range. Note 2: Many values = N x R001 and N x R005 up to N=10 are also *2 W1:atts withfactory total for solder and trace size of 300 2mm Dimensions (mm) Note Contact for value pad - tolerance combinations outside thisarea range. Note termination 2: Many values = N x dissipation R001 and Non x R005 up to N=10 are also *2 W1:available. atts withfactory total solder and trace size&of 300 mm Note 3:Dimensions Recommended minimum pad adjacent trace for each for rated FR4 PCB (mm) available. Note 3: Recommended Size minimum pad & adjacent trace area L for each termination for W rated dissipation on FR4HPCB (max) D Si ze L W H (max) D LR1206 0.480.25 3.200.305 1.630.20 0.8 Dimensions (mm) LR1206 0.480.25 3.200.305 1.630.20 0.8 LR2010 0.480.25 5.230.38 2.640.25 0.84 Dimensions (mm) (mm) SDimensions i ze L W H (max) D LR2010 0.480.25 5.230.38 2.640.25 0.84 6.500.38 3.250.25 Dimensions (mm) LR2512 0.480.25 0.84 Size Size L W W H (maHx()max) D D L LR1206 3.250.25 LR2512 0.480.25 3.200.305 6.500.38 1.630.20 0.8 0.480.25 0.84 Size LR(F)1206 L W H ( m a x ) D LR 1200.8 6 / 0.8 2010 / 2512 0.480.25 3.200.305 1.630.20 LR1206 0.480.25 3.200.305 1.630.20 LR2010 0.480.25 5.230.38 2.640.25 0.84 LR 1206 / 0.8 201 0 / 2512 LR(F)1206 0.480.25 3.200.305 1.630.20 LR(F)2010 0.480.25 5.230.38 2.640.25 0.84 LR2010 0.480.25 5.230.38 2.640.25 W L 0.84 6.500.38 3.250.25 LR2512 0.480.25 LR(F)2010 0.480.25 5.230.38 2.640.25 0.840.84 6.500.38 3.250.25 LR(F)2512 0.480.25 0.84 W L 6.500.38 3.250.25 LR2512 0.480.25 0.84 6.500.38 3.250.25 LR 1206 / 2010 / 250.84 LR(F)2512 0.480.25 12 Electrical Data Electrical Data Physical Data Physical Data Physical Data Physical Data Physical Data Physical Data O O -- i i A SZ Z L O -- i A i SZ Z L i i SL-L i i SL-L i 3/4Li i 'I i Z i 3/4Li i 'I i Z W W HH W W H H LR 1206 / 2010 / 2512 LLRR 11220066 // 22001100 // 22551122 LL L D L Solder Plating D Nickel Barrier Layer Solder Plating HH Copper W Layer raparound Nickel Barrier Termination Copper W raparound DD SolderPlating Plating Alumina Substrate Solder Termination Copper Termination DD Nickel Barrier Layer Solder Plating Nickel Barrier Layer Alumina Substrate Protective Overcoat Solder Plating Protective Overcoat Welwyn Components Copper W raparound LRC/LRF Series Resistive Element Nickel Barrier Layer Copper W raparound Resistive Element Nickel Barrier Layer ProtectiveOvercoat Overcoat Termination Protective Copper Termination Welwyn Components Termination Copper W raparound Copper Termination LRC/LRF Series Resistive Element 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 A 2.0 B 4.0 C 1.25 LR(F)1206 Low Value Flat Low Value Flat Chip Resistor Chip Resistor LR(F)1206 LR(F)2010 General Note 2.0 Protective Overcoat ProtectiveResistive OvercoatElement Copper Termination Resistive Element 4.0 1.25 B 3.05 6.5in product specification 1.5 Welwyn Components reserves the right to make changes without notice or liability. B All information is subject to Welwyn's own data and is considered accurate at time of going to print. General Note LR(F)2010 3.05 6.5in product specification 1.5 Welwyn Components reserves the right to make changes without notice or liability. LR(F)2512 3.7 7.75 1.5 (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK General NoteAll information is subject to Welwyn's own data and is considered accurate at time of going to print. Telephone: +44 (0) 1670 822181 (0) 1670 829465 * Email: * Website: www.welwyn-tt.com Welwyn Components reserves the right to make changes* Facsimile: in product+44 specification without noticeinfo@welwyn-tt.com or liability. General Note LR(F)2512 3.7 and 7.75 1.5 UK All information is (c) subject to Welwyn's own data is considered accurate at time of going to 7AA, print. Welwyn Components Limited * Bedlington, Northumberland NE22 General Note Welwyn Components reserves+44 the right to 822181 make changes in product without notice or liability. Telephone: 1670 (0) specification 1670 829465 * Email: * Website: www.welwyn-tt.com Welwyn Components reserves the right (0) to make changes* Facsimile: in product+44 specification without noticeinfo@welwyn-tt.com or liability. (%) General NoteisComponents All to Welwyn's ownand data is considered accurate at of time of going to print. (c) information Welwyn Limited * Bedlington, Northumberland NE22 7AA, UK General Note General All information is Note subjectsubject to Welwyn's own data isand considered accurate at time going to print. AEC-Q200 Table 7 Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: without info@welwyn-tt.com * Website: 100 www.welwyn-tt.com Typ. Max. WelwynTT Components reserves the right to make changes in product specification notice or liability. Method Electronics reserves the right to make changes in product specification without notice orR05) liability. (@1R0) (add (c) Welwyn Components Limited * data Bedlington, Northumberland NE22 7AA, UK (%) ref Test General Note All is subject to Welwyn's own data and is considered accurate at time of going to print. All information is subject to TT Electronics' own and is accurate at time of to (c) information Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK AllAEC-Q200 information is (0) subject to7822181 TT Electronics' own data and is considered considered accurate at time of going going to print. print. 80 Telephone: 1670 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Table Telephone: 1670 822181 * Facsimile: +44 MIL-STD-202 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Typ. 0.2 3 +44 (0)+44 High Temp. Exposure Method 108Max. R% 0.5 100 A subsidiary of TT electronics plc A subsidiary of 04.10 TT electronics plc A subsidiary of TT electronics plc 04.10 A subsidiary A subsidiary of of 04.10 TT electronics plc TT electronics plc C C Method Power Rating BI Technologies IRC Welwyn 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 Temperature Cycling JESD22 Method JA-104 R% 0.25 0.1 (c)4TT Electronics plc 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 r Rating (add R05) (@1R0) (c) Welwyn Limited Bedlington, Northumberland NE22 7AA, UK to0.25 Test 4 Electronics Temperature Cycling JESD22 Method JA-104 R% Allref information isComponents subject to TT Electronics' own* data and is considered accurate at time of going print. 0.1 (c) plc (c) TT TT plc Exposure 80 60 Telephone: +44Electronics (0) 1670 822181 * Facsimile:MIL-STD-202 +44 (0) 1670 829465 * Email: * Website: www.welwyn-tt.com 3 High Temp. Method 108info@welwyn-tt.com R% 0.5 0.2 60 40 A subsidiary of www.ttelectronicsresistors.com 04.10 TT electronics04.10 plc www.ttelectronics.com/resistors 23 2323 www.ttelectronicsresistors.com 04.10 12.15 10.19 12.15 23 23 23 Recommended Solder Pad Dimensions (mm) A Low Value Flat Resistors Chip Resistor LR1206 2.0 Low Value Flat Chip Resistor A B C 4.0 1.25 LRLR2010 Series LR Series 3.05 6.5 1.5 LR2512 3.7 7.75 1.5 Make Possible B C Performance Data ref 3 Typ. (%) 100 R% 0.5 0.2 80 Max. (add R05) (@1R0) 4 Temperature Cycling R% 0.25 0.1 6 Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2 7 Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.2 JESD22 Method JA-104 8 Operational Life (Cyclic Load) MIL-STD-202 Method 108 R% 14 R% 0.5 Vibration MIL-STD-202 Method 204 15 Resistance to Soldering Heat MIL-STD-202 Method 210 16 Solderability J-STD-002 0.5 40 20 0.05 0 R% 0.25 70 25 150 (C) Ambient temperature 0.1 >95% coverage 21 Board Flex AEC-Q200-005 R% 0.5 0.2 22 Terminal Strength AEC-Q200-006 R% 0.25 0.1 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 Short Term Overload 60 R% 0.25 0.05 Thermal Shock MIL-STD-202 Method 107 18 1 Power Rating AEC-Q200 Table 7 Method Test High Temp. Exposure MIL-STD-202 Method 108 LRC 2512 1 w at 2 t LRC 2010 0.5 1 wwatt LR C 12 06 0.5 25ww atat tt 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. Ordering Procedure Ordering Procedure Example: LRF2512 at 10part milliohms (hence flip-chip mounted) and 2% tolerance on a reel of 1800 pieces This product has two valid numbers: LRF2512-R01GW European (Welwyn) Part Number: LRF1206-R02FW (1206, 20 milliohms 1%, Pb-free) Type Mounting L R F 1 2 0 1 Conventional (element up)2 Flip-chip (element down) F 6 - R 0 2 Values > R025 3 Values < R025 1 Size Type Value (use IEC62 code) 4 5 2 3 4 5 Value Tolerance Termination & Packing F = 1% G = 2% J = 5% W Pb-free, standard packing T1 Pb-free, 1000/reel (non-standard) PB SnPb finish, standard packing Standard packing is tape & reel 1206 & 2010 3000/reel 2512 1800/reel E24 = 3/4 2010 characters 2512 R = ohms (values >R025) 1% LRF = Flip-chip orientation 2% (values R025) 5% W Size LR(use = Conventional orientation 1206 Tolerance IEC62 code) F G J F Packing 1206 or 2010 3000/reel Standard 2512 1800/reel USA Number: LRC-LRF1206LF-01-R020-F (1206, 20 milliohms 1%, Pb-free) T1 (IRC) PartAll sizes 1000/reel W L Tape R C - L 1 R F 1 2 2 0 6 L 3 F - 0 4 1 - R 5 (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK 0 2 0 6 - F 7 04.10 Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 1 2 3 4 5 6 7 Family Model Size Termination TCR Value Tolerance LRC LR = Conventional orientation 1206 Omit for SnPb 01 = standard 4 characters (values >R025) R = ohms 2010 LF = Pb-free (100ppm/C values R05) LRF = Flip-chip orientation 2512 (values R025) General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT TT Electronics' Electronics' own own data dataand andisisconsidered consideredaccurate accurateat attime timeof ofgoing goingtotoprint. print. F = 1% G = 2% J = 5% Packing Standard packing is tape & reel Pb-free All Pb-free sizes 1000/reel Pb-free 1206 & 2010 3000/reel Pb-free SnPb Pb-free 2512 1800/reel Pb-free BI Technologies IRC Welwyn www.ttelectronicsresistors.com www.ttelectronics.com/resistors (c) TT Electronics plc 12.15 10.19 Pb-free