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Surface Mount Sense
SurfacReeMsoiusnttoSresnse Resistors
OARS, OOSAARuRSr,SfOa-AcXRePS,-MXOP,oAOuRAnRSStZZSSSeeernrieises es Resistors
·
·
·
·
VFOElalpeelexumniebe-slan OeidtrFOVEAloTleladpeewRCalexemudnRsSinebsei-stg,l±naoefnO2doitr10lorTreAdmpewCtaRehpdRdnsemuSsi±rgct/mf-o2ºenoXC0sa1rrPplemPtp,ehdCmxOeuBprc/AmahCnsRaesPlSaiCeotZixBnnpgShaeenarstiieionsng
·Zero-o hmZeFr6loe5-xAoibhjlumemle6pa5edArsvjfueomrrstpihoeenrrmvearlseixopnansion
·RoHS c oRmoVOHpaplSleiuancen-osatmidropdwleiansnitgotn1rmeduces PCB heating
Element TCR ±20ppm/ºC
Zero-ohm 65A jumper version
ElectricalDaRtoaHS compliant
OARS1
OARS-XP
Power ratingElaetc2t5riCcal Data
Power rating at 85ºC
watts
watts
2
1
4
2
Resistance range
ohms
R002 to RO05A0RS1
R001OtoARR0S2-5XP
Resistance PToowleerrarnacteing at 25C
%
Standard
(Enquire for
VunaPRlilsouetewsedisesvtraarlnaucetiesn)graantg8e5ºCmilliohms
Inductance Resistance Tolerance
nH
watts
2R002: 5, > R002: 1, 5
4
watts
1
2
2o, h3m, 4s, 5, 10, 15, 20R, 20202, 2to5,R3005,040, 50
1, 2, 2.5, 5,R70.051, 1to0R, 20205, 25
% R0<0120: 5, > R002: 1, 5
Ambient temSptaenradaturdreVraalnuegse
(Enquire for unlisted values)
°Cmilliohms 2, 3, 4, 5, 10, 15, 20, 22, 2-55,53t0o, +401,6500
1, 2, 2.5, 5, 7.5, 10, 20, 25
Inductance
Current ratinAgmabtie2n5ttCemperature rangaemps
nH
°C
OARS-1Z
65
<10
-55 to +160
Comments
Current rating at 85C
amps
Ambient temCpuerrreantut rreatirnagngate25C
°C amps
46 OARS-1Z
-55 to +16065
Zero-oChmomjummepenrts
Physical CADmuarbrteiaennttratetimngpearta8tu5reCrange
amps
°C
46
-55 to +160
Zero-ohm jumper
DimensionsP(mhyms)icanadl Dreactoammended solder pads
Type
L HT
OOOO* DAAAAeRRRRpeSSSSnd111-Xe-->RRnPtR00o000nDTOOOO032yoiAAAAm3phRRRRm,eeSSSSOinc111-sAvXi--ao>RRRPlnuR00Sse000-(0321m3Zm, O) AanR1111d±±0S11200.r-7...e..133150cZ88t86*oomm111e12±±0114n20±±033..L27....d..003..31505058e..88t8677*7od5166t*osol2d4±±33.e2.00.H.r±25058..0777.p513.66t*a2o65ds
* Dependent on ohmic value
D
T4.83
±0.76
2.346.7
±0±.205.76
4.83
±0.76
W a nom. b nom. c nom. d nom.
D 3.18
±0.38
4.83
±0.76
3.56
±40..776±60..3358
4.83±0.38
±0.76
W a nom. b nom. c nom. d nom.
4.07
3.18
±0.38
4.07 9.37
3.07
9.37 3.07
4.45
3.56
±0.387.24
4.45 9.58
3.18
3.23
3.23
6.35
±0.38
7.24
9.58
3.18
b
c db
cd
c
c
aa
General Note
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.
© TT electronics plc
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
07.1017.11
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Surface Mount
SSeunrsfaecReeMsiosutonrtsSense Resistors
OOAARRSS, O, OARASR-SX-PX, PO,AORASRZSSZerSieesries
Performance Data (AEC-Q200)
TCR (-55 to 125ºC)
Thermal Shock
High Temp. Exposure (125ºC)
Temp. Cycling (-40 to 125ºC)
Operational Life
Biased Humidity
Mechanical Shock
Vibration
Terminal Strength
Solvent Resistance
Solderability
OARS1
OARS-XP
ppm/ºC
R%
R%
R%
R%
R%
R%
R%
Tem perature Derating
<R004
<R002
240
0.75
1.75
1
2
0.75
1.5
1
R004 to R015
R002 to R007
40
0.75
0.5
1
1
0.5
1
1
Meets JIS-C-6429
Meets MIL-STD-002 Method 215
Meets J-STD-002 Method B
>R015
>R007
40
0.75
1
0.75
1
0.5
1
1
Pulse Energy Rating
120
100
80
60
40
20
0
0 25 50 75 100 125 150 175
Am bient Tem perature (Deg C)
Note: For OARS-1Z the above derating graph may be applied to
the square of the current rating.
120
100
80
60
40
20
0
1
10
Value (m illiohm s)
100
OA RS1
OA RS- XP
Note: This graph relates to single pulses of short duration (100ms).
Higher energy limits apply for longer pulses and overloads
Hot Spot Temperature Rise
7.6m m x 7.6m m pads, 2 oz copper on FR4, still air
Joint Temperature Rise
7.6mm x 7.6mm pads, 2 oz copper on FR4, still air
300
250
200
150
100
50
0
25%
50% 75%
Proportion of Rated Power
Value in m illiohm s
OARS1 / OARS-XP
50 / 25
30 / 15
10 / 5
5/ -
100%
100
80
60
40
20
0
25%
50% 75%
Proportion of Rated Power
Value in milliohms
OARS1 / OARS-XP
5/-
10 / 5
30 / 15
50 / 25
100%
Note: Temperature rise data are given here for typical mounting conditions. Actual figures depend on PCB copper weight, mounting pad size, track
width and substrate type. Also, the open air format responds better to forced air cooling than chip format resistors. For values below 5 milliohms
allowance should be made for heat generated in the copper tracks themselves. Application-specific guidance is available on request.
General Note
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.
© TT electronics plc
07.11
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
11. 11

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Surface Mount
SSeunrfsaeceReMsoisutnotrsSense Resistors
OOAARRSS, ,OOAARRSS-X-PX,PO, AORASRZSSZerSieesries
Flammability
The resistor will not burn or emit incandescent particles under any condition of applied temperature or overload.
Marking
The parts are legend marked with ohmic value and tolerance code.
Packaging Data
Dimensions (mm)
Type
OARS1, OARS-1Z
OARS-XP-R001
OARS-XP >R001
A
4.32±0.08
7.21±0.1
B
11.7±0.08
11.94±0.1
11.56±0.1
C
24±0.3
DE
11.5±0.1 1.75±0.1
F
8±0.1
12±0.1
G
4±0.1
Ordering Procedure
Example: OARS1 at 10 milliohms and 5% tolerance on a reel of 1900 pieces -
Type
OARS1
OARS-XP
OARS1–R01JI
Value (use IEC62 code)
Tolerance (use IEC62 code)
F 1%
J 5%
Packing
I Tape
OARS1
OARS-XP
1900/reel
1200/reel
Standard
For the zero-ohm link, order OARS-1Z (Pack quantity is 1900/reel)
General Note
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.
© TT electronics plc
07.11
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
11. 11