Ultra Precision
RUelstirsatMoPresrteacl iFsilomn Resistors Welwyn Components
UMletrtaalPFrielmcisRioensistors Welwyn Components
CAR series
Metal Film Resistors CAR serie•s Tolerance down to 0.01%
• Low TCR’s
C•ARToselreiersa•nHcieghdroewlianbiltitoy 0.01%
• TLoolweraTnCc•eR’dSsouwpnertoio0r.0m1o%isture performance
• LHoiwghTCrRe•’lsiaNboilnitystandard values available
• HSNSNHuuiooigpgnphnehesrrestireoatislonrai••tadrnmbsaHMdmitolraiadiitaosgbyrtvtdihiuscalerithlvteuusyeaetprdlsemeusartsepfevaeoseatbtrairasmliafllvioabatfalrnnyielimcmdlmaeabneanletvectaeawlilfoailbrmklesavailable
•
• HMigahtecshtesdtasbeiltitsy amnedtanl feiltmwaovrakilsable
• Matched sets and networks
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Electrical Data CAR5 CAR6 CAR7 Notes
Power rating at 70°C watts 0.25 0.33 0.5
Power rating at 85°C CAwRa5tts 0.C1A25R6 0C.2A5R7 0.33 Notes
Power rating aRtes7is0t°aCnce range watts 0o.2h5ms 10R00t.o33M 10R0 t0o.55M 10R0 to 10M
Power rating aLitm8i5ti°nCg element voltage watts 0.1v2o5lts 205.025 305.033 500
Resistance ranTgCeR (20 to +70°C) ohms 10Rp0ptmo/°3CM 10R0 to 5M5, 1100,R105,to251,05M0 See tolerance/TCR
Limiting elemeRnetsivstoaltnacgeetolerance volts 250% 305.001, 0.02, 0.05, 50.010, 0.25, 0.5 & 1 combinations
TCR (20 to +7S0t°aCnd) ard values ppm/°C 5, 10, 15, 25E,2540, E96 preferred See tolerance/TCR below
Resistance tolTehraenrmceal impedance % °C/w0a.0t1t, 0.02, 0.1051,00.1, 0.25, 0.5 &710 6c0ombinations
Standard valuAesmbient temperature range °C E24, E96 preferre-d55 to +155 below
Thermal impedance °C/watt 110 70 60
Table of Ambient temperature range Resistance Restri°cC tions -55 to +155
Table of Resistance Restrictions Tolerance
TCR CAR5 CAR6 CAR7
ppm/°C 0.01-0.02% 0.05% 0.1-1% 0.0T1o/le0r.0a2n%ce 0.05% 0.1-1% 0.01-0.02% 0.05% 0.1-1%
TCR 51 50 tCoA3R050k 10 to 500k 10 to 500k 50 tCoA5R060k 10 to 500k 10 to 500k 50 tCoA7R570k 10 to 750k 10 to 750k
ppm/°C 0.010-0.02% 50 t0o.0350%0k 100t.o1-1M% 01.001to/01.0M2% 50 t0o.0550%0k 100t.o1-1M% 01.001to-01.0M2% 50 t0o.0755%0k 100t.o1-1M% 10 to 1.5M
51 501t5o 300k 5010toto3050k0k 1100 ttoo 15M00k 1500 ttoo 15M00k 5010toto5050k0k 1100 ttoo 15M00k 1500 ttoo 17M50k 5010toto75705k0k 1100 ttoo 17M50k 10 to 3.5M
10 502t5o 300k 501t0ot3o010Mk 1010toto1M1M 1050toto1.550M0k 501t0ot5o010Mk 1010toto1M1M 1500 ttoo 37M50k 501t0ot7o510Mk 1100 ttoo 11M.5M 10 to 5M
15 505t0o 300k 501t0ot3o010Mk 1010toto1M1M 1500 ttoo 35M00k 501t0ot5o010Mk 1010toto1M1M 1500 ttoo 57M50k 501t0ot7o510Mk 1100 ttoo 13M.5M 10 to 10M
25 50 to 300k 10 to 1M 10 to 1.5M 50 to 500k 10 to 1M 10 to 3NMote1: B5a0steod 7o5n0skampli1n0g.to1010M% scre1en0etdo p5rModuct is available.
50 5P0 toh3y00sk ica10ltoD1Mata10 to 3M 50 to 500k 10 to 1M 10 to 5M 50 to 750k 10 to 1M 10 to 10M
Physical Data Dimensions (mm) and Weight (g) Note1: Based on sampling. 100% screened product is available.
PCB Min
Dimensions (mm) and Weight (g) mounting Bend Wt.
Type L Max D Max f min PCd Bnom. Mcienntres Radius nom.
CAR5 7.2 2.5 30 mount0in.6g Ben1d0.2 Wt0. .6 0.24 d D
L MCAaxR6 D M1a0x.0 f mi3n.7 nom30. centr0es.6 Rad1iu2s.7 nom0..6 0.40 L f
Type d
CAR5 7C.2AR7 2.515.5 305.5 0.630 10.20.8 0.618.4 0.241.2 1.15d D
CAR6 10.0 3.7 30 0.6 12.7 0.6 0.40 L f
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 Welwyn’s own data and is considered accurate at time of going to print. A subsidiary of
BI Technologies GTAGWATllelieleEnnilnfnweeocfeyrrotmnarrromaalnCtNliaiocotsNmoinorteopnisesotesinseur©TveebsenuljeseWtbpcstjhthereetecootslnrweiTtgeroT:hvyet+EWnstl4eoet4chlmCtwr(eo0oaynr)knmieig1’cshs6cp’oht7owoa0twnonn8gnme2edds2anaait1knttaae8sp1aacrnLohn·diddaFmunaiisscgcitcscetsoiosempnniedsnislcieididp·f:eiecrB+roraeee4dtdddi4uolaicnan(c0tccgw)custiupo1rtahren6atoc,7etiuef0Naitctoan8atrto2titmitth9oiicmu4neem6eowo5fboriget·lfhioraElgoiabmnounigliatidnttiynlgo:N.oiptEntori2fcino2ept@r.7oinwArtlAe.ial,wbUiylKinty-t.t.com · Website: www.welwyn-tt.com IRC WelwynTT electronics plc
A subsidiary of
© Welw17y8n Components Limited · Bedlington, Northumberland NE22 7AA, UK www.ttelectroTnTicesl.eccotmro/nreicssistpolrcs
©TelTepThEolneec:t+ro4n4ic(0s)p1l6c70 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
05.18
178
UUltltrraaPrPecriesicoinsion
MMeetatal Fl ilFmilmResRisteosrsistors
CCAARRsesreireies s Welwyn Components
Ultra Precision
MCeotnastlruFctiilomn Resistors Marking
CACRerasmericiersods are coated with a metal film and plated steel Type reference, TCR code,WreseisltawncyenvaClueoamndptoolenraencnets
caps are force fitted. A helical cut is used to adjust the film to code.
its final value. The resistance value marking conforms to IEC 62.
CoTnesrmtrinuacttioionnwires are welded to the caps and the resistor is Marking
TypSeorelvfeerenntceR,eTsCiRstcaondcee, resistance value and tolerance
Cerparmotieccrtoeddswaritehcaoaspteedciwalliythfoarmmueltaatlefdilmepaonxdy pcolaatteindgs.teel codTeh.e body protection and marking are resistant to all normal
caps are force fitted. A helical cut is used to adjust the film to
its fTienarlmvainluaet. ions Theinrdeusissttraianlccelevaanluinegmflaurikdisngsucitoanbfloermfosr tporinIEtCed6c2i.rcuits.
TermMiantaetiroianl wires areSwoledldereadbtleo ftihneishcacpospapnedr wthiree.resistor is
proStetrcetendgtwhith a specTiahlelytfeorrmminualattioednsempoexeyt cthoeatrineqgu. irements of
Solvent Resistance
IEC 68.2.21 The body protection and marking are resistant to all normal
TerSmolidnearatiboilnitsy The terminations meet the requirements of industrial cleaning fluids suitable for printed circuits.
Material SolIdEeCra1b1le5-f1in,isChlacuospep4e.r1w7.i3re.2.
Strength The terminations meet the requirements of
PerformaIECn6c8.e2.21Data
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2 Values 10 ≤ 250k Values > 250k
Actual Performance Actual Performance
Performance Data Maximum Typical Maximum Typical
Load at rated power : 1000 hrs at 70°C (or 85°C) ∆R % 0.05 0.02 0.25 0.05
Load at rated power : 8000 hrs at 70°C (or 85°C) ∆R % Va0l.u1es 10 ≤ 250k 0.04 V0.a5lues > 250k 0.1
Dry heat : 1000 hrs at 155°C ∆R % Act0u.a1l5Performance0.08 Actu1al Performance0.2
Shelf life : 12 months at room temperature ∆R % Maxim0u.m01 Typi0c.a0l03 Maxim0u.0m4 Typic0a.0l 2
LoaDdeartatriantgedfrpoomwrearte:d10p0o0wehrrsaat t7700°C°C(o(or r8855°C°C) ) ∆R % 0.05 Zero at 1550°.C02 0.25 Zero at 1550°.0C5
LoaSdhaotrtratteerdmpoovwerelroa: d8000 hrs at 70°C (or 85°C) ∆R ∆%R % 0.10.01 0.004.001 0.50.08 0.10.01
DryChleimatat:ic1000 hrs at 155°C ∆R ∆%R % 0.105.05 0.080.02 1 0.2 0.20.05
SheClflilmifeat:ic12camteognotrhys at room temperature ∆R % 0.01 55/155/506.003 0.04 55/155/506.02
DerLaotinngg tferormm dratmedp phoeawter at 70°C (or 85°C) ∆R % 0Z.e0r5o at 155°C 0.02 Z0e.2ro at 155°C 0.05
ShoTretmtepremraotuvererloraapdid change ∆R ∆%R % 0.010.04 0.0001.02 0.080.25 0.010.05
ClimRaetsicstance to solder heat ∆R ∆%R % 0.050.02 0.002.003 0.20.05 0.005.005
ClimVaibtircatciaotnegaonrdy bump ∆R % 0.0525/155/56 0.002 0.0565/155/56 0.02
LonNgotieserm(indaamdpechaedaet of frequency) ∆R %µV/V 0.050.2 0.020.03 0.2 1 0.050.1
TemVpoeltragtuerecoreafpfidciecnhtanogf eresistance ∆Rp%pm/V 0.040.3 0.0<20.05 0.250.2 0.0<50.05
Resistance to solder heat ∆R % 0.02 0.003 0.05 0.005
VAibraptiopn alnidcbaumtpion Notes ∆R % Fig0u.r0e21 Pa0c.00k2aging 0.06 0.02
Noise (in a decade of frequency) µV/V 0.2 0.03 1 0.1
CAR5 and CAR6 standard packing is in tape, as5
Resistors can be supplied matched for tolerance and TCR
Voltage coefficient of resistance ppm/V 0.3 show<0n.0b5elow, whilst 0C.2AR7 is bulk p
down to ±0.005% and ±1ppm/°C, respectively, either as
Application Notes separate resistors or pre-assembled and encapsulated within a Figure 1
plastic box.
Resistors can be supplied matched for tolerance and TCR f1 f2 5
dowThnetoind±i0v.id0u0a5l%resainstdor±s1wppitmhin/°Ca,sreetspoer cmtiovedluy,leeictahnerbaes
sepmaraanteufraecstiustroerds woritphrea-taoslseermanbcleedoaf n±d0.e0n1c%apsaunldataedTCwRithoifn a 6 52 6
pla±st5icpbpomx/.°C. Body location f 1 – f 2 ≤ 1.4 mm
The individual resistors within a set or module can be f1 f2
manufactured with a tolerance of ±0.01% and a TCR of 6 52 6
±5ppm/°C. Body location f 1 – f 2 ≤ 1.4 mm
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
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
T©eleTpThoEnlee:ct+r4o4n(i0cs) 1p6lc70 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
05.18 179
Ultra Precision
Metal Film Resistors
CAR series
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: CAR5V-31K6PI (CAR5 with TCR ±5ppm/°C at 31.6 kilohms ±0.02%, Pb-free)
C A R 5 V - 3 1 K 6 P I
1 2 3 4 5
1 2 3 4 5
Type TCR (ppm/°C) Value Tolerance Finish, Screening & Packing
CAR5 V = ±5 E24 = 3/4 characters L = ±0.01% I = Standard packing & Pb-free
CAR6 T = ±10 E96 = 4/5 characters P = ±0.02% SC = Standard packing & Pb-free
CAR7 Y = ±15 R = ohms W = ±0.05% with 5ppm/°C screened
D = ±25 K = kilohms B = ±0.1% PB = Standard packing & SnPb
C = ±50 M = megohms C = ±0.25% CAR5 Ammo Up to 5000/box
D = ±0.5% CAR6 Ammo Up to 2500/box
F = ±1% CAR7 Bulk 250/box
USA (IRC) Part Number: CAR5LFV3162PA (CAR5 with TCR ±5ppm/°C at 31.6 kilohms ±0.02%, Pb-free)
C A R 5 L F V 3 1 6 2 P A
1 2 3 4 5 6
1 2 3 4 5 6
Type Termination TCR (ppm/°C) Value Tolerance Packing
CAR5 Omit for SnPb V = ±5 3 digits + multiplier L = ±0.01% A CAR5 Ammo up to 5000/box
CAR6 LF = Pb-free T = ±10 R = ohms for P = ±0.02% CAR6 Ammo up to 2500/box
CAR7 Y = ±15 values <100 ohms W = ±0.05% B CAR7 Bulk 250/box
D = ±25 B = ±0.1%
C = ±50 C = ±0.25%
D = ±0.5%
F = ±1%
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
© TT Electronics plc
05.18
Mouser Electronics
Authorized Distributor
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CAR5LFT25K50B CAR5LFT60K40B CAR6LF-V-50R0-BT CAR6LF-T-1K5-BT CAR6LF-V-12K75-BT
CAR5LFY30K1BTR CAR7LFV4003B
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