Low Value Current Sense
LR Series
Low Value Current Sense
Flat
Chip Resistor
to 1Ω
Chip Resistor
·
Resistance range from 0.002Ω up
Flat
LR Series
LR Series
Resistance range from 0.002 up to 1
Resistance range from 0.002 up to 1
Standard Sn/Pb and Pb lead-free terminations available
Standard Sn/Pb and Pb lead-free terminations available
High power dissipation at 70°C
High power dissipation at 70°C
Tolerances to ±1%
Tolerances to ±1%
Low Value Current Sense
Flat Chip Resistor
Standard Sn/Pb and Pb lead-free terminations available
High power dissipation at 70°C
Tolerances to ±1%
·
·
·
Electrical Data
Electrical Data
Size
Size
Tolerance
Tolerance
F, G, J, K
F, G, J, K
1206
1206
2010 0.010 to
2010 0.010 to 1
1
2512
2512
1
1
2
2
Resistance
Resistance
Range
1
Range
1
Power
Power
Pad and Trace Area
Dielectric
Maximum
Maximum
TCR
2
Rating
Rating
Dielectric
2
Operating
Pad and Trace Area
TCR
for Max Power
Withstanding
Current
Operating
Temperature
for Max Power
(ppm/°C) at 70°C
Withstanding
(V)
Current
(ppm/°C) at 70°C
Voltage
(Amps)
Temperature
Rating @
(Amps)
Rating @ 70°C
70°C
Tolerance
Tolerance
Tolerance
(Watts)
Voltage (V)
Tolerance
(Watts)
J,
J, K
K
K
K
0.003
1
0.003 to
to 1
0.5
0.5
16
16
200
200
30mm
2
30mm
2
100mm
2
100mm
2
300mm
2
300mm
2
0.003 to
0.003 to 1
1
0.002 to
to 1
0.002
1
0.002 to
to 1
0.002
1
±100
±100
1.0
1.0
2.0
2.0
-55°C to +150°C
22
22
-55°C to +150°C
32
32
Non-standard resistance values available
Non-standard resistance values available
Contact factory for TCR information on values under 0.05ohms
Contact factory for TCR information on values under 0.05ohms
Outline Dimensions
Outline Dimensions
D
D
L
L
W
W
Solder Plating
Solder Plating
Ni Barrier Layer
Ni Barrier Layer
Protective Overcoat
Protective Overcoat
Cu Wraparound
Cu Wraparound
Termination
Termination
H
H
E
E
Cu Termination
Cu Termination
Alumina Substrate
Alumina Substrate
1206
1206
in.
in.
0.126 ± 0.012
0.126 ± 0.012
0.064 ± 0.008
0.064 ± 0.008
0.024 ± 0.004
mm
mm
3.20 ± 0.305
3.20 ± 0.305
1.63 ± 0.203
1.63 ± 0.203
0.61 ± 0.102
in.
2010
2010
2512
mm
in.
2512
L
L
W
W
H
H
D
D
E
E
General Note
General Note
0.024 ± 0.004
0.019 ± 0.010
0.019 ± 0.010
0.019 ± 0.010
0.019 ± 0.010
0.61 ± 0.102
0.48 ± 0.25
0.48 ± 0.25
0.48 ± 0.25
0.48 ± 0.25
in.
0.206 ± 0.015
0.206 ± 0.015
0.104 ± 0.010
0.104 ± 0.010
0.029 ± 0.004
0.029 ± 0.004
0.019 ± 0.010
0.019 ± 0.010
0.019 ± 0.010
0.019 ± 0.010
mm
5.23 ± 0.38
5.23 ± 0.38
2.64 ± 0.25
2.64 ± 0.25
0.74 ± 0.1
0.74 ± 0.1
0.48 ± 0.25
0.48 ± 0.25
0.48 ± 0.25
0.48 ± 0.25
mm.
in.
mm.
0.256 ± 0.015
6.50 ± 0.38
0.256 ± 0.015
6.50 ± 0.38
0.128 ± .010
3.25 ± 0.25
0.128 ± .010
3.25 ± 0.25
0.029 ± 0.004
0.74 ± 0.1
0.029 ± 0.004
0.74 ± 0.1
0.019 ± 0.010
0.48 ± 0.25
0.019 ± 0.010
0.019 ± 0.010
0.019 ± 0.010
0.48 ± 0.25
0.48 ± 0.25
0.48 ± 0.25
IRC 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
All information is subject to IRC’s own data and is considered accurate at time of going to print.
or liability.
General Note
All
reserves the
is subject to
changes in product specification
considered accurate at
IRC
information
right to make
TT electronics’ own data and is
without notice or liability.
time of going to print.
Advanced Film Division
• 4222
data and is considered accurate at time of going to
USA
All information is subject to IRC’s own
South Staples Street • Corpus Christi Texas 78411
print.
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com
TT electronics plc
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
A subsidiary of
© TT electronics plc
Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com
A subsidiary of
LR Series Issue June 2010
TT electronics plc
LR Series Issue
11
2010
09.
June
Low Value Current Sense
Flat Chip Resistor
Low Value Current Sense
LR Series
Flat Chip Resistor
Environmental Performance
Environmental Test
Thermal Shock
Short Time Overload
High Temperature Exposure
Dielectric Withstanding Voltage
Moisture Resistance
Load Life
Low Temperature Operation
Resistance to Solder Heat
Insulation Resistance
Solderability
Test Method
MIL-STD-202 Method 107G
Condition B, -55°C +150°C, 100 cycles
6.25X Rated Power for 5 seconds (1206, 2010 Size)
5X Rated Power for 5 seconds (2512 Size)
100 hours @150°C
MIL-STD-202, Method 301
2.5X Rated Voltage, 1 minute
MIL-STD-202 Method 106
1000 hours, Rated Power, 70°C
1.5 hours on, 30 minutes off
1 hour -65°C followed by rated power for 45 min
MIL-STD-202 Method 210
260°C, 10 seconds
MIL-STD-202 Method 302
100VDC, 1 minute
MIL-STD-202 Method 208
245°C, 5 seconds
Typical Performance
±0.5% + 1.0m
±0.5% + 0.5m
±0.5% + 0.5m
±0.25% + 0.5m
±0.5% + 0.5m
±1.0% + 0.5m
±0.5% + 0.5m
±0.5% + 1.0m
>1000 megohms
95% min Coverage
Power Derating and Pulse/Surge Capability
Power Derating Curve
100
Pulse and Surge Capability
Surge Power Watts
70
50
30
20
% Of Rated Power
50
LRC 25
12 2 w
atts
LRC 20
10 1 w
att
LRC 12
06 0.5
watts
Average power
dissipationnot to
exceed normal
70°C rating
10
10
7
5
3
25°
70°
150°
Temperature in °C
300 µSec
1 mSec
3 mSec
10 mSec
30 mSec
100 mSec
300 mSec
1 Sec
Surge or Repetitive Pulse Duration
Ordering Procedure
Prefix
Model
LR for values > 0.025
LRF for values
0.025
Recommended Solder Pad Layout
A
LRC - LRF 1206LF - 01 - R020 - F
B
C
Size
1206; 1206LF; 2010; 2010LF; 2512; 2512LF
(LF=Lead Free Terminations)
TCR Code
01 = ±100ppm/°C
DIM.
A
in.
mm
in.
mm
in.
mm
LR1206
0.080
(2.0)
0.160
(4.0)
0.050
(1.25)
LR2010
0.120
(3.05)
0.255
(6.5)
0.060
(1.5)
LR2512
0.145
(3.7)
0.305
(7.75)
0.060
(1.5)
Resistance Code
4-Digit resistance code. Ex: R050 = 0.050; 1R00 = 1
Tolerance Code
F = ±1%, G = ±2%, J = ±5%, K = ±10%
B
C
For additional information or to discuss your specific requirements,
please contact our Applications Team using the contact details below.
Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com
LR Series Issue June 2010
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
09. 11
