IRC TT OAR1R100F Open air current sense resistor Datasheet

Open Air
Current Sense Resistors
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OAR Series
•
•
•
•
•
TCR’s to ±20ppm/°C
Power ratings of 1, 3, & 5W @ 85°C
Resistance range from 2.5mΩ to 100mΩ
Open air design maximizes thermal performance
Welded copper leads minimize effects from solder wicking and provide true
1% performance
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Features:
Applications:
• Welded construction
• Current sensing
• Flameproof
• Feedback
• Inductance less than 10 nanohenries
• Low inductance
• Solderable copper leads (60/40)
• Surge and pulse
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Electrical Data
Part
Number
Power Rating
@ 85°C
(watts)
Resistance
Range (mΩ)
OAR-1
1.0
3, 5, 10, *20, *25, 50
OAR-3
3.0
2.5, 5, 10, 15, 20, 25, *30, 50, 100
OAR-5
5.0
3, 5, 10, *15, *20, *25, *50
Tolerance
(±%)
TCR
(±ppm/°C)
Inductance
(nH)
1, 2¹, 5
20
<10
Notes:
¹ ±2% tolerance available <0.005mΩ
* denotes resistance values that may have longer lead times than other values listed
* Please contact factory for resistance values not listed
Environmental Data
Load Life (1000 hours @ 25°C)
∆R/R <1%
Moisture (no load for 1000 hours)
∆R/R <1%
Temperature Cycling (-40°C to +125°C for 1000 cycles)
∆R/R <1%
Operating Temperature
-40°C to +125°C
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
OAR Series Issue November 2008 Sheet 1 of 2
Open Air
Current Sense Resistors
Physical Data
On lower ranges stand-off may be
eliminated
NOTE:
Contact factory for:
1. Variations of “A” dimension.
2. Different lead diameter.
B
C
E
F
A
Test Point (Kelvin connection)
Dimensions (Inches and (mm))
IRC
Type
OAR-1
OAR-3
OAR-5
A
B
C
E
F
0.450 +0.040/-0.020
0.200 ±0.100
0.125 ±0.030
0.065 +0.010/-0.005
0.040 ±0.002
(11.43 +1.020/-0.508)
(5.08 ±2.54)
(3.18 ±0.762)
(1.65 +0.254/-0.127)
(1.02 ±0.051)
0.600 +0.040/-0.020
0.600 Typ
0.125 ±0.030
0.065 +0.010/-0.005
0.040 ±0.002
(15.24 +1.020/0.508)
(15.3 max.)
(3.18 ±0.762)
(1.65 +0.254/-0.127)
(1.02 ±0.051)
0.800 +0.040/-0.020
0.350 Typ
0.125 ±0.030
0.065 +0.010/-0.005
0.040 ±0.002
(20.32 +1.020/-0.508)
(8.9 max.)
(3.18 ±0.762)
(1.65 +0.254/-0.127)
(1.02 ±0.051)
Ordering Data
Sample Part No.
OAR
1
R100
F
LF
IRC Style
OAR
Power Rating in Watts
1 = 1W
3 = 3W
5 = 5W
Resistance Range
‘R’ indicates decimal point location
Tolerance
F = ±1%, G = ±2%, J = ±5%
RoHS Indicator
LF indicates RoHS compliance
Blank indicates Sn/Pb terminal
tinning; available on special request
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
OAR Series Issue November 2008 Sheet 2 of 2
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