Ultra Precision Resistors Ultra Precision Welwyn Components Metal Film Resistors Ultra Precision Metal Film Resistors Welwyn Components Metal Film Resistors CAR series Tolerance down to 0.01% CAR series Low TCRs CAR series Tolerance down to 0.01% High reliability Low TCRs Tolerance down to 0.01% Superior moisture performance High reliability Low TCRs Non standard values available High rSuperioreliability moisture performance Highest stability metal film available Superior moisture performance Non standard values available Matched sets and networks Non standard values available Highest stability metal film available Highest stability metal film available Matched sets and networks Matched sets and networks 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 CAR5 CAR6 CAR7 Notes Electrical Data Power rating at 70C watts 0.25 0.33 0.5 Power rating at 85C watts 0.125 0.25 0.33 CAR5 CAR6 CAR7 Notes Resistance range ohms 10R0 to 3M 10R0 to 5M 10R0 to 10M Power rating at 70C watts 0.25 0.33 0.5 Limiting element voltage volts 250 350 500 Power rating at 85C watts 0.125 0.25 0.33 TCR (20 to +70C) ppm/C 5, 10, 15, 25, 50 See tolerance/TCR Resistance range ohms 10R0 to 3M 10R0 to 5M 10R0 to 10M Resistance tolerance % 0.01, 0.02, 0.05, 0.1, 0.25, 0.5 & 1 combinations Limiting element voltage volts 250 350 500 Standard values E24, E96 preferred below TCR (20 to +70C) ppm/C 5, 10, 15, 25, 50 See tolerance/TCR Thermal impedance C/watt 110 70 60 Resistance tolerance % 0.01, 0.02, 0.05, 0.1, 0.25, 0.5 & 1 combinations Ambient temperature range C -55 to +155 Standard values E24, E96 preferred below Thermal impedance C/watt 110 70 60 Ambient temperature range C -55 to +155 Table of Resistance Restrictions Tolerance Table of Resistance Restrictions TCR CAR5 CAR6 CAR7 ppm/C 0.01-0.02% 0.05% 0.1-1% 0.01/0.02% 0.05% 0.1-1% 0.01-0.02% 0.05% 0.1-1% Tolerance 1 5 50 to 300k 10 to 500k 10 to 500k 50 to 500k 10 to 500k 10 to 500k 50 to 750k 10 to 750k 10 to 750k TCR CAR5 CAR6 CAR7 10 50 to 300k 10 to 1M 10 to 1M 50 to 500k 10 to 1M 10 to 1M 50 to 750k 10 to 1M 10 to 1.5M ppm/C 0.01-0.02% 0.05% 0.1-1% 0.01/0.02% 0.05% 0.1-1% 0.01-0.02% 0.05% 0.1-1% 1 15 50 to 300k 10 to 1M 10 to 1M 50 to 500k 10 to 1M 10 to 1M 50 to 750k 10 to 1M 10 to 3.5M 5 50 to 300k 10 to 500k 10 to 500k 50 to 500k 10 to 500k 10 to 500k 50 to 750k 10 to 750k 10 to 750k 25 50 to 300k 10 to 1M 10 to 1.5M 50 to 500k 10 to 1M 10 to 3M 50 to 750k 10 to 1M 10 to 5M 10 50 to 300k 10 to 1M 10 to 1M 50 to 500k 10 to 1M 10 to 1M 50 to 750k 10 to 1M 10 to 1.5M 50 50 to 300k 10 to 1M 10 to 3M 50 to 500k 10 to 1M 10 to 5M 50 to 750k 10 to 1M 10 to 10M 15 50 to 300k 10 to 1M 10 to 1M 50 to 500k 10 to 1M 10 to 1M 50 to 750k 10 to 1M 10 to 3.5M 25 50 to 300k 10 to 1M 10 to 1.5M 50 to 500k 10 to 1M 10 to 3M 50 to 750k 10 to 1M 10 to 5M Note1: Based on sampling. 100% screened product is available. 50 50 to 300k 10 to 1M 10 to 3M 50 to 500k 10 to 1M 10 to 5M 50 to 750k 10 to 1M 10 to 10M Physical Data Note1: Based on sampling. 100% screened product is available. Dimensions (mm) and Weight (g) Physical Data PCB Min mounting Bend Wt. Dimensions (mm) and Weight (g) Type L Max D Max f min d nom. centres Radius nom. PCB Min d CAR5 7.2 2.5 30 0.6 10.2 0.6 0.24 D mounting Bend Wt. L f CAR6 10.0 3.7 30 0.6 12.7 0.6 0.40 Type L Max D Max f min d nom. centres Radius nom. d CAR7 15.5 5.5 30 0.8 18.4 1.2 1.15 CAR5 7.2 2.5 30 0.6 10.2 0.6 0.24 D L f CAR6 10.0 3.7 30 0.6 12.7 0.6 0.40 CAR7 15.5 5.5 30 0.8 18.4 1.2 1.15 General Note 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 TT electronics plc General Note General Note BI Technologies IRC Welwyn Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Welwyn Components reserves the right to make changes in product specification without notice or liability. TT Electronics reserves the right to make changes in product specification without notice or liability. Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronics.com/resistorsTT electronics plc 178 Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK TT Electronics plc Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 10.19 178Ultra Precision Metal Film Resistors UltraUltra PPrrecisionecision MetalMetal FilmFilm ResistorResistorss CAR series WWelwynelwyn ComponentsComponents CARCAR serieseriess Ultra Precision Metal Film Resistors MarkingMarking ConstructionConstruction TTypeype rrefeeferrence,ence, TCRTCR code,code,W rresistanceesistanceelwyn valuevalue Components andand tolerancetolerance CeramicCeramic rrodsods aarree coatedcoated withwith aa metalmetal filmfilm andand platedplated steelsteel CAR series code.code. capscaps aarree foforrcece fitted.fitted. AA helicalhelical cutcut isis usedused toto adjustadjust thethe filmfilm toto TheThe rresistanceesistance valuevalue markingmarking conformsconforms toto IECIEC 62.62. itsits finalfinal value.value. TTerminationermination wiwirreses aarree weldedwelded toto thethe capscaps andand thethe rresistoresistor isis Marking Construction SolventSolvent ResistanceResistance pprrotectedotected withwith aa speciallyspecially formulatedformulated epoxyepoxy coating.coating. Type reference, TCR code, resistance value and tolerance Ceramic rods are coated with a metal film and plated steel TheThe bodybody pprrotectionotection andand markingmarking aarree rresistantesistant toto allall normalnormal code. caps are force fitted. A helical cut is used to adjust the film to industrialindustrial cleaningcleaning fluidsfluids suitablesuitable forfor printedprinted cicirrcuits.cuits. TTerminationserminations The resistance value marking conforms to IEC 62. its final value. MaterialMaterial Solderable finishSolderable finish coppercopper wiwirre.e. Termination wires are welded to the caps and the resistor is StStrrengthength TheThe terminationsterminations meetmeet thethe rrequiequirrementsements ofof Solvent Resistance protected with a specially formulated epoxy coating. IECIEC 68.2.2168.2.21 The body protection and marking are resistant to all normal SolderabilitySolderability TheThe terminationsterminations meetmeet thethe rrequiequirrementsements ofof industrial cleaning fluids suitable for printed circuits. Terminations IECIEC 115-1,115-1, ClauseClause 4.17.3.24.17.3.2 Material Solderable finish copper wire. Strength The terminations meet the requirements of IEC 68.2.21 PerformancePerformance DatDataa Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 VValuesalues 10 10 250250kk VValuesalues >> 250k250k ActualActual PerformancPerformancee ActualActual PerformancePerformance MaximuMaximumm TTypicaypicall MaximuMaximumm TTypicalypical Performance Data LoadLoad atat ratedrated powerpower :: 10001000 hrshrs atat 70C70C (or(or 85C)85C) RR %% 0.00.055 0.00.022 0.20.255 0.050.05 Load at rated power : 8000 hrs at 70C (or 85C) Load at rated power : 8000 hrs at 70C (or 85C) RR %% Values0.10.1 10 250k 0.040.04 V0.50.5alues > 250k 0.10.1 Dry heat : 1000 hrs at 155CDry heat : 1000 hrs at 155C RR %% 0.150.15 0.080.08 11 0.20.2 Actual Performance Actual Performance ShelfShelf lifelife :: 1212 monthsmonths atat rroomoom temperatutemperaturree RR %% 0.010.01 0.0030.003 0.040.04 0.020.02 Maximum Typical Maximum Typical DDeerraattiinngg ffrroomm rraatteedd ppoowweerr aatt 7700 CC ((oorr 8855 CC)) ZZeerroo aatt 115555 CC ZZeerroo aatt 115555 CC Load at rated power : 1000 hrs at 70C (or 85C) R % 0.05 0.02 0.25 0.05 ShortShort termterm overloadoverload RR %% 0.00.011 0.000.0011 0.00.088 0.010.01 Load at rated power : 8000 hrs at 70C (or 85C) R % 0.1 0.04 0.5 0.1 Dry heat : 1000 hrs at 155CClimaticClimatic R %RR %% 0.150.00.055 0.080.00.022 1 0.0.22 0.20.050.05 Shelf life : 12 months at room temperature R % 0.01 0.003 0.04 0.02 CClliimmaattiicc ccaatteeggoorryy 5555//115555//5566 5555//115555//5566 Derating from rated power at 70 C (or 85 C) Zero at 155 C Zero at 155 C LongLong termterm dampdamp heatheat RR %% 0.00.055 0.00.022 0.0.22 0.050.05 Short term overload R % 0.01 0.001 0.08 0.01 TTemperatuemperaturree rapidrapid changechange RR %% 0.00.044 0.00.022 0.20.255 0.050.05 Climatic R % 0.05 0.02 0.2 0.05 ResistanceResistance toto soldersolder heatheat RR %% 0.00.022 0.000.0033 0.00.055 0.0050.005 Climatic category 55/155/56 55/155/56 VVibrationibration andand bumpbump RR %% 0.00.022 0.000.0022 0.00.066 0.020.02 Long term damp heat R % 0.05 0.02 0.2 0.05 NNooiissee ((iinn aa ddeeccaaddee ooff ffrreeqquueennccyy)) VV//VV 00..22 00..0033 11 00..11 Temperature rapid change R % 0.04 0.02 0.25 0.05 VVoollttaaggee ccooeeffffiicciieenntt ooff rreessiissttaannccee ppppmm//VV 00..33 <<00..0055 00..22 <<00..0055 Resistance to solder heat R % 0.02 0.003 0.05 0.005 FiguFigurree 11 Vibration and bump R % 0.02 0.002 0.06 0.02 Packaging ApplicationApplication NoteNotess Noise (in a decade of frequency) V/V 0.2 0.03 1 0.1 CAR5 and CAR6 standard packing is in tape, as Matched Sets Matched Sets 55 Voltage coefficient of resistance ppm/V 0.3 <0.05 0.2 <0.05 shown below, whilst CAR7 is bulk packed. Resistors can be supplied matched for tolerance and TCRResistors can be supplied matched for tolerance and TCR down to 0.005% and 1ppm/C respectively.down to 0.005% and 1ppm/C respectively. Figure 1 Application Notes Matched Sets 5 ff ff 11 22 Resistors can be supplied matched for tolerance and TCR 5252 66 66 down to 0.005% and 1ppm/C respectively. Body location fBody location f f f 1.4 mm 1.4 mm 11 22 f f 1 2 52 6 6 Body location f f 1.4 mm 1 2 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 WWelwynelwyn ComponentsComponents LimitedLimited Bedlington,Bedlington, NorthumberlandNorthumberland NE22NE22 7AA,7AA, UKUK TTelephone:elephone: +44+44 (0(0)) 16701670 822181822181 Facsimile:Facsimile: +44+44 (0(0)) 16701670 829465829465 Email:Email: info welwyn-tt.cominfo welwyn-tt.com WWebsite:ebsite: wwwwww.welwyn-tt.com.welwyn-tt.com TT Electronics plc 10.19 179179 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 179