Resistors Surface Mount Sense Resistors Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series (cid:31) Flexible leadsfor thermalexpansion (cid:31) Op enF-leaxiribdlee lseiagdns froerd tuhceremsaPl eCxBpahnesiaotning (cid:31) Valuesdown to 1mΩ Open-air design reduces PCB heating (cid:31) Element TCR ±20ppm/ºC OVAalRueSs ,d OowAnR toS 1-mXiPlli,o hOmARSZ Series (cid:31) Zero-ohm65A jumper version TCR to ±40ppm/°C (Element TCR ±20ppm/°C) (cid:31) RoH•S cFolemxipblliealnetadsforthermalexpansion •ZeOrop-oehnm-a i6r5dAe sjuigmnperer dvuercseiosnPCBheating • Valuesdownto1mΩ • ElementTCR±20ppm/ºC Electri•calZDeraot-aohm65A jumperversion • RoHScompliant AAllll ppaarrttss aarree PPbb--OffrreeAee aaRnnddS ccoo1mm/pp3llyy wwiitthh EEUU DDiirreecctitivvee 22001111//6655//EEUU aammeeOnnddAeedd RbbyyS ((EE-UUX)) 22P001155//886633 ((RRooHHSS33)) Powerratingat25ºC watts 2 4 PowerraEtlinegctartic8a5lº CData watts 1 2 Electrical Data Resistancerange ohms R002 toR050 R001 toR025 OARS1 OARS3 OARS-XP Resistance Tolerance % OARS1≤R002:5,>R002:1,5 OARS-XP Power rating StandarPadto 7Vw0a°eClruaremastbiinegnt,a otr 21450°°CC milliohmswwaat2tttss,3,4,5,10,125,20,222,25,30,40,503 1,2,2.5,5,74.5,150,20,25 (EnquirefPoterormuwnineliasrlt etreadmtvipnaeglruaeatustr)e85ºC watts 1 2 InductanRRceeessiissttaannccee rraannggee nHoohhmmss R002 to RR000520 toR050 R00<21 t0o R015 R001R to00R10 t2o5 R025 AmbientRR teeessmiisspttaaennrccaeetu TTreoolleerarraannngcceee °C %% ≤≤ RR00-050252: : t5o5,, +>> 1RR60000022:: 11,, 55 SSttaannddaarrdd VVaalluueess mmiilllliioohhmmss 22,,3 3,,4 4,,5 5,,1 100,,1 155,,2 200,,2 2,25,320, ,34, 04,, 550, 10, 151,2,2.5,51,, 72.,5 2,.150, ,52, 07,.52,5 ((EEnnqquuiirree ffoorr uunnlliisstteedd vvaalluueess)) 22, 25, O30A, 4R0S, 5-01Z Com12m.5e, 1n0t,s 20, 25 CurrentIIrnnaddtuuinccgttaaanntccee25ºC amps nnHH 65 <<1100 CurrentAArammtibbniigeennatt tttee8mm5ºppCeerraattuurree rraannggee amps °°CC 46 --5555 ttoo ++116600 Zero-ohmjumper Ambient temperaturerange °C -55 to+160 OAROSA-1RZS-1Z ComCmoemnmtsents PhysicCCauulrrrrDeennatt trraaattiinngg aatt 2255°C°Cambient aammppss 65 65 CMuarxr ernetsirdautianlg reastis8t5a°nCce millioahmmpss 46 0.3 Zero-Zoehrmo-jouhmmp ejurmper AAmmbbiieenntt tteemmppeerraattuurree rraannggee °°CC -55 to-5+51 6to0 +160 Dimensions(mm)andrecommendedsolderpads Type P hysical Data L H T D W a nom. b nom. c nom. d nom. 3.05 OARS1/3>R003, OARS-1Z DTeimmepnseiroantsu(rme mD)earnadtinregc1o1m.1m8ended±s0o.7l6derpads 4.83 3.18 4.07 Type ±0.38 L H T ±0.76D ±0.3W8 a nom. b nom. c nom. d nom. OARS1/ 3-R003 9.37 3.07 3.513.05 2.36 OARS1>R003, OARS-1Z 3.23 OARS1/ 3 -R002 11.5611.18±0.76±0.76 ±0.25 4.74.83 3.536.18 4.44.507 OARS1-R003 ±0.38 ±0.38 ±0.7±60.76 ±0.±308.38 9.37 3.07 OARS-XO PARS1-R002 1102.7.0 t*o11.5624.2.587 t*o±30.5.716 ±20.3.265 ±40..87364.7 ±60..33358.56 7.42.445 9.58 3.18 3.23 *Dependentonohmicvalue ±0.38 ±0.76 ±0.38 10.7 to 2.28 to 4.83 6.01 OARS-XP 7.24 9.58 3.18 12.0* 4.57* ±0.76 ±0.38 * Dependentonohmicvalue OARS1/3/XP b OARSZ c d c b c d c a a Note: For OARS1/3/XP this relates to power rating, for OARSZ it relates to current rating. 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 07.11 © TT Electronics plc 07.11 09.18

Surface Mount Sense Resistors Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series OARS, OARS-XP, OARSZ Series ElePctreicraflo Dramtaance Data (AEC-Q200) OARS1 OARS3 OARS-XP OARS1/3 <R004 R004toR015 >R015 Power rating at 70°Cambient, or 140°C watts OA2RS-XP <3R002 5R002toR007 >R007 terminal temperature ResiTstCanRce (r-a5ng5e to125ºC) ohms R002 top Rp0m50/ºC R002 to2 R40015 R001 to R025 40 40 ResiTsthanecrem TaollerSanhcoeck % ∆R% ≤ R002: 5, >0 R.70052: 1, 5 0.75 0.75 StanHdaigrdh V aTlueemsp.Exposumreillio(1hm2s5ºC2), 3, 4, 5, 10, 1∆5R, 2%0, 2, 3, 4, 51, .170,5 15 1, 2, 2.5, 5, 7.5, 0.5 1 (Enquire for unlisted values) 22, 25, 30, 40, 50 12.5, 10, 20, 25 InduTcteanmcep.Cycling(-40 to12n5HºC) ∆R% <101 1 0.75 AmbOienpte termaptieorantaurle Lraifnege °C ∆R% -55 to +1260 1 1 BiasedHumidity ∆R% 0.75 0.5 0.5 OARS-1Z Comments CurrMenet rcahtinagn aitc 2a5°lCSamhboienctk amps ∆R% 65 1.5 1 1 MaxV reisbidrauatil orensistance milliohms ∆R% 0.3 1 Zero-ohm jumper 1 1 Ambient temperature range °C -55 to +160 TerminalStrength MeetsJIS-C-6429 SolventResistance MeetsMIL-STD-002Method215 Solderability MeetsJ-STD-002MethodB Temperature Derating TemperatureDerating Pulse EnergyRating 120 120 r 100 100 we (J) 80 o 80 y P g 60 ed 60 OARS1/3/XP ner 40 at OARSZ E R 20 40 of 0 % 20 1 10 100 Note: Fo0r OARS1/3/XP this relates to power rating, for OARSZ it relates to current rating. Value (milliohms) 0 25 50 75 100 125 150 175 AmbientTemperature(DegC) OARS1/3 OARS-XP Note:ForOARS-1Ztheabovederatinggraphmaybeappliedto Note:Thisgraphrelatestosinglepulsesofshortduration (≤100ms). thesquareofthecurrentrating. Higherenergylimitsapplyforlongerpulsesandoverloads HotSpotTemperatureRise JointTemperatureRise 7.6mmx7.6mmpads,2ozcopperonFR4,stillair 7.6mmx 7.6mmpads,2ozcopperonFR4,stillair 300 Value inmilliohms 100 Value inmilliohms e(K)250 OARS1/3 / OARS-XP e(K) 80 OARS1/3 /OARS-XP s 50/25 s 5/ - eRi200 30/15 eRi 60 10 / 5 atur150 10/ 5 atur 40 30 / 15 mper15000 5/ - mper 20 50 / 25 e e T 0 T 0 25% 50% 75% 100% 25% 50% 75% 100% Proportion ofRatedPower ProportionofRatedPower Note:Temperaturerisedataaregivenherefortypicalmountingconditions.ActualfiguresdependonPCBcopperweight,mountingpadsize, track widthandsubstrate type.Also,theopenairformatrespondsbettertoforcedaircoolingthanchipformatresistors.Forvaluesbelow5milliohms allowanceshouldbemadeforheatgeneratedinthecopper tracks themselves.Application-specificguidanceisavailableonrequest. 07.11 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 09.18

Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series Thermal Performance Examples OARS1-R005 at 2W OARSXP-R0025 at 5W These thermal images were taken under ambient conditions of still air at 25°C with the components mounted on horizontal standard test boards as defined below. JEDEC standard circuit board: 2” (50.8mm) square FR4 2outer power planes,2 ounce(70μ) Cu 1” (25.4mm) square exposed 2 inner signal planes, 1 ounce (35μ) Cu (continuous planes) In contrast to the flat chip format, the OARS format keeps the hot spot thermally distant from the solder j oints and reduces undesirable heat delivery into the PCB. Further thermal images for other ohmic values and power dissipations are available on request. Kelvin (4 Terminal) Mounting For high precision applications a Kelvin (4 Terminal) mounting method is recommended. An example to illustrate the design principle is shown. High current connections are made to the two pairs of larger pads, whilst the voltage sense connections are made to the two smaller central pads. 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 09.18

Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series Standard 4-Terminal Probe Positions for Measuring Unmounted Parts Standard 4-Terminal Probe Positions for Measuring Unmounted Parts 0.79 6.35 0.79 6.35 Ø 0.76 Ø 0.76 1.27 1.27 Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series 7.94 All dimensions in mm 7.94 All dimensions in mm Construction Copper terminations are welded to resistance alloy strip which is then formed. Value adjustment is achieved by control of width, without the need for subsequent abrasion or notch trimming. Pb-free termination finish is 96% Sn / 4% Ag alloy. Flammability Theresistorwillnotburnoremitincandescentparticlesunderanyconditionofapplied temperatureoroverload. Marking Thepartsarelegendmarkedwithohmicvalueand tolerancecode. Packaging Data Dimensions(mm) Type A B C D E F G OARS1/3, OARS-1Z 4.32±0.08 11.7±0.08 8±0.1 OARS-XP-R001 11.94±0.1 24±0.3 11.5±0.1 1.75±0.1 4±0.1 7.21±0.1 12±0.1 OARS-XP>R001 11.56±0.1 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 09.18 07.11

Surface Mount Sense Resistors OARS, OARS-XP, OARSZ Series Ordering Procedure Ordering Procedure This product has two valid part numbers: European (Welwyn)Part Numbers: OARS1-R01JI(OARS1,10milliohms ±5%,Pb-free) OARS-1Z(OARS-1Z, Pb-free) O A R S 1 - R 0 1 J I 1 2 3 4 1 2 3 4 Type Value Tolerance Termination & Packing OARS1 3-5characters F = ±1% I = Pb-free, Tape & Reel OARS3 See Electrical Data J= ±5% OARS1, OARS3 1900/reel OARS-XP R = ohms OARS-XP 1200/reel O A R S - 1 Z 1 1 Type OARS-1Z No value or tolerance applies. Termination is Pb-free. Packing is Tape & Reel, 1900/reel. USA (IRC)Part Numbers: OARS1R010JLF(OARS1,10milliohms ±5%,Pb-free) OARS-1ZLF(OARS-1Z, Pb-free) O A R S 1 R 0 1 0 J L F 1 2 3 4 1 2 3 4 Type Value Tolerance Termination & Packing OARS1 4/5 characters F = ±1% LF = Pb-free OARS3 See Electrical Data J= ±5% OARS1, OARS3 1900/reel OARS-XP R = ohms OARS-XP 1200/reel O A R S - 1 Z L F 1 2 1 2 Type Termination & Packing OARS-1Z No value or tolerance applies. LF= Pb-free, Tape & Reel, 1900/reel. 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 09.18

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: T T Electronics: OARS1R030J OARS1R010FLF OARS1R015JLF OARS1R003JLF OARS1R005FLF OARS1R004FLF OARS1R005JLF OARS1R003J OARS1R003F OARS1R003FTR-LF OARS1R005FTR-LF OARS1R005JTR-LF OARS1R010FTR-LF OARS1R010JTR-LF OARS1R015FTR OARS1R015JTR-LF OARS1R020FTR-LF OARS1R022FTR-LF OARS1R025FTR-LF OARS1R030FTR-LF OARS1R030JTR-LF OARS1R040FTR OARS1R050FTR-LF OARS1R050JTR OARS1R050JTR-LF OARS1R050JLF OARS1R010JLF OARS1R030JLF OARS1R015FLF OARS1R010J OARS1R010F OARS1R004F OARS1R003FLF OARS1R020JLF OARS1R005J OARS1R005F OARS1R015J OARS1R020FLF OARS1R040J OARS1R020J OARS1R020F OARS1R040JLF OARS1R015F OARS1R050J OARS1R015JTR OARS1R050FLF OARS1R040JTR-LF OARS1ZEROHMTR-LF OARS1ZEROHMTR OARSXPR001FLF OARSXPR0025FLF OARSXPR020FLF OARSXPR002FLF OARSXPR005FLF OARSXPR010FLF OARSXPR025FLF OARSR025FLF OARSR020FLF OARSR030FLF OARSR005FLF OARSR010FLF OARSR015FLF OARSR003FLF OARS3R002JLF OARS3R003FLF OARS3R004FLF OARS3R005FLF OARS3R010FLF OARS3R015FLF OARS1R002FLF OARSXPR0075FLF OARSXPR005JLF OARS1R025FLF OARS1R002JLF OARS1R030FLF OARS1R040FLF OARSXPR002JLF OARSXPR001JLF OARSXPR0025JLF OARSXPR0075JLF OARS3R015JLF OARS1R025JLF OARSXPR010JLF OARSXPR020JLF OARS3R003JLF OARS3R005JLF OARS3R002FLF OARS3R004JLF OARS3R010JLF OARSXPR025JLF OARSXPR0125JLF OARS1R004JLF OARS1R022JLF OARSXPR0125FLF OARS1R022FLF OARS-1ZLF OARS1-R030FI OARS1-R050FI OARS1-R015FI OARS1-R003FI