Features
■ Special alloy resistor
■ Power rating at 70 °C: CRA2010 - 1 W,
CRA2512 - 3 W
■ Inductance less than 5 nH
■ RoHS compliant*
Applications
■ Power supplies
■ Stepper motor drives
CRA2010/CRA2512 - High Power Current Sense Chip Resistor
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Performance Characteristics
*RoHS COMPLIANT
DIMENSIONS: MM
(INCHES)
Electrical Characteristics
Characteristic CRA2010 CRA2512
Power Rating @ 70 °C 1 W 3 W
Operating Temperature Range -55 °C to +170 °C
Derated to Zero Load at +170 °C
Maximum Working Voltage (P x R)1/2
Insulation Resistance > 100 megohms
Resistance Range 0.005 - 0.020 Ω 0.010 - 0.100 Ω
Resistance Tolerance ±1 %, ±5 %
Temperature Coeffi cient ±75 PPM/°C
Product Dimensions
Model A B C T Resistor
Material
CRA2010 5.0 ± 0.20 2.5 ± 0.20 0.65 ± 0.20 0.6 ± 0.20 Resistor Cu-Ni
(0.1962 ± 0.008) (0.0984 ± 0.008) (0.0256 ± 0.008) (0.0236 ± 0.008) or Cu-Mn
CRA2512 6.45 ± 0.20 3.35 ± 0.20 0.95 ± 0.10 0.7 ± 0.20 Resistor Cu-Ni
(0.254 ± 0.008) (0.131 ± 0.008) (0.037 ± 0.004) (0.0276 ± 0.008) or Cu-Mn
Recommended Solder Pad Layout
Test Conditions Specifi cation
Thermal Shock -55 ˚C to + 150 ˚C, ΔR ±(0.5 % + 0.0005 Ω)
1000 Cycles, 15 minutes
Short Time Overload 5 X Rated Power for 5 seconds ΔR ±(0.5 % + 0.0005 Ω)
Low Temperature -65 ˚C for 24 hours ΔR ±(0.5 % + 0.0005 Ω)
Storage
High Temperature
Exposure 10000 hours @ + 170 ˚C ΔR ±(1.0 % + 0.0005 Ω)
Bias Humidity + 85 ˚C, 85 % RH, 10 % Bias, ΔR ±(0.5 % + 0.0005 Ω)
1000 hours
Mechanical Shock 100 g’s for 6 milliseconds, 5 pulses ΔR ±(0.5 % + 0.0005 Ω)
Vibration Frequency varied 10 to 2000 KHz ΔR ±(0.5% + 0.0005 Ω)
in one minute, 3 directions, 12 hours
Load Life 1000 hours at rated power at ΔR ±(1.0% + 0.0005 Ω)
+70 ˚C, 1.5 hours on, 0.5 hours off
Resistance to Solder +260 ˚C Solder, 10-12 second dwell, ΔR ±(0.5 % + 0.0005 Ω)
Heat 25 mm/second emergence
Moisture Resistance MIL-STD-202 Method 106, 0 % power ΔR ±(0.5% + 0.0005 Ω)
(7a and 7b not required)
A
B
SENSING TRACE
Cu TRACE
L
Model A B L
CRA2010 3.1 2.7 3.1
(0.122) (0.106) (0.122)
CRA2512 4.0 2.1 4.1
(0.157) (0.083) (0.161)
A
B
CC
T
CC
Construction
Overcoat
Metal Alloy Plate
Ni / Sn
Plating
DIMENSIONS: MM
(INCHES)
How to Order
CRA 2512 - F Z - R020 E LF
Model
(CRA = Precision Chip Resistor
Size
2010 = 2010 Size
2512 = 2512 Size
Resistance Tolerance
• F = ±1 %
• J = ±5 %
TCR (PPM/°C)
• Z = ±75 PPM/°C
Resistance Value
“R” (decimal point) followed by three signifi cant digits (example: R025 = 0.025 ohm)
Packaging
• E = 4000 pieces on 180 mm (7 inch) reel
Termination
• LF = Tin-plated (RoHS compliant)
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
CRA2010/CRA2512 - High Power Current Sense Chip Resistor
Packaging Dimensions (Conforms to EIA RS-481A)
CRA2010 Resistance Values Available
REV. 12/11
3.60 ± 0.20
(0.142 ± 0.008) 2.0 ± 0.05
(0.079 ± 0.002)
4.0 ± 0.05
(0.157 ± 0.002)
4.0 ± 0.1
(0.157 ± 0.004)
1.5 +0.1/-0
(0.059 +0.004/-0) DIA. 1.5
(0.059)
DIA. MIN.
1.2 ± 0.15
(0.047 ± 0.006)
6.9 ± 0.2
(0.272 ± 0.008)
5.5 ± 0.05
(0.217 ± 0.002)
1.75 ± 0.1
(0.069 ± 0.004)
12.0 ± 0.2
(0.472 ± 0.008)
TOP TAPE
EMBOSSED TAPE
RESISTOR
USER DIRECTION OF FEED
60.0
(2.362)
MIN.
DIA.
DIA.
180 +0/-3
(7.09 +0/-0.118)
13.0 ± 1.0
(0.512 ± 0.039)
DIA.
15.4 ± 2.0
(0.606 ± 0.079)
13.0 ± 1.0
(0.512 ± 0.039)
Code R Value Code R Value
R005 0.005 R015 0.015
R010 0.010 R020 0.020
CRA2512 Resistance Values Available
Code R Value Code R Value
R010 0.010 R050 0.050
R015 0.015 R060 0.060
R020 0.020 R070 0.070
R025 0.025 R075 0.075
R030 0.030 R080 0.080
R040 0.040 R100 0.100
Consult factory for other resistance values.
DIMENSIONS: MM
(INCHES)
25
75
125
175
225
275
0 50 100 150 200 250 300
Time (seconds)
Temperature (°C)
60 - 120 seconds
90 - 150
seconds
260 °C peak
190 °C
150 °C
220 °C
Ramp Down
6 °C/second
255 °C
Maximum of 20 seconds between
+255 °C and +260 °C
Ramp Up
3 °C/second maximum
10 seconds minimum
<1>
<1>
Soldering Profi le
Ambient Temperature (°C)
70 170
100
-55
Power Ratio (%)
Derating Curve
