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Features
■
Special alloy resistor
■
Power rating at 70 °C: 3 W
■
Inductance less than 5 nH
■
RoHS compliant*
■
AEC-Q200 qualified
Applications
■
Power supplies
■
Stepper motor drives
■
Input amplifiers
Electrical Characteristics
Characteristic
Power Rating @ 70 °C
Operating Temperature Range
Derated to Zero Load at
Maximum Working Current
Insulation Resistance
Resistance Range
Resistance Tolerance
Temperature
CRA2512
3W
-55 °C to +170 °C
+170 °C
(P / R)
1/2
> 100 megohms
0.010 - 0.100
Ω
±1 %, ±5 %
±50 PPM/°C
Performance Characteristics
Test
Thermal Shock
Short Time Overload
Low Temperature
Storage
High Temperature
Exposure
Bias Humidity
Mechanical Shock
Vibration
Load Life
Resistance to Solder
Heat
Moisture Resistance
Conditions
-55
˚C
to + 150
˚C,
1000 Cycles, 15 minutes
5 X Rated Power for 5 seconds
-55
˚C
for 24 hours
1000 hours @ + 170
˚C
+ 85
˚C,
85 % RH, 10 % Bias,
1000 hours
100 g’s for 6 milliseconds, 5 pulses
Frequency varied 10 to 2000 KHz
in one minute, 3 directions, 12 hours
1000 hours at rated power at
+70
˚C,
1.5 hours on, 0.5 hours off
+260
˚C
Solder, 10-12 second dwell,
25 mm/second emergence
MIL-STD-202 Method 106, 0 % power
(7a and 7b not required)
Product Dimensions
A
T
B
C
C
C
C
10
R0
A
6.45 ± 0.20
(0.254 ± 0.008)
CRA2512 - High Power Current Sense Chip Resistor
Recommended Solder Pad Layout
L
B
A
Cu TRACE
SENSING TRACE
Model
CRA2512
A
4.0
(0.157)
B
L
2.1
4.1
(0.083) (0.161)
DIMENSIONS:
MM
(INCHES)
ΔR
< ±0.5 %
ΔR
< ±0.5 %
ΔR
< ±0.5 %
ΔR
< ±1.0 %
ΔR
< ±0.5 %
ΔR
< ±0.5 %
ΔR
< ±0.5 %
ΔR
< ±1.0 %
ΔR
< ±0.5 %
ΔR
< ±0.5 %
Construction
Overcoat
Ni / Sn
Plating
Metal Alloy Plate
Model
CRA2512
B
3.35 ± 0.20
(0.131 ± 0.008)
C
0.95 ± 0.10
(0.037 ± 0.004)
T
0.7 ± 0.20
(0.0276 ± 0.008)
Resistor
Material
Resistor Cu-Ni
or Cu-Mn
DIMENSIONS:
MM
(INCHES)
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
CRA2512 - High Power Current Sense Chip Resistor
Packaging Dimensions (Conforms to EIA RS-481A)
1.75 ± 0.1
(0.069 ± 0.004)
5.5 ± 0.05
(0.217 ± 0.002)
EMBOSSED TAPE
TOP TAPE
1.5 +0.1/-0
DIA.
(0.059 +0.004/-0)
1.5
(0.059)
DIA. MIN.
13.0 ± 1.0
(0.512 ± 0.039)
DIA.
180 +0/-3
(7.09 +0/-0.118)
DIA.
60.0
(2.362)
MIN.
DIA.
12.0 ± 0.2
(0.472 ± 0.008)
RESISTOR
3.60 ± 0.20
(0.142 ± 0.008)
1.2 ± 0.15
(0.047 ± 0.006)
4.0 ± 0.1
(0.157 ± 0.004)
2.0 ± 0.05
(0.079 ± 0.002)
4.0 ± 0.05
(0.157 ± 0.002)
6.9 ± 0.2
(0.272 ± 0.008)
USER DIRECTION OF FEED
DIMENSIONS:
MM
(INCHES)
15.4 ± 2.0
(0.606 ± 0.079)
13.0 ± 1.0
(0.512 ± 0.039)
CRA2512 Resistance Values Available
Code
R010
R015
R020
R025
R030
R040
R Value
0.010
0.015
0.020
0.025
0.030
0.040
Code
R050
R060
R070
R075
R080
R100
R Value
0.050
0.060
0.070
0.075
0.080
0.100
Soldering
Can be soldered in accordance with IPC/JEDEC-J-STD-020.
275
<1>
Maximum of 20 seconds between
260 °C peak
<1>
255 °C
+255 °C and +260 °C
225
220 °C
Temperature (°C)
190 °C
175
150 °C
90 - 150
seconds
Ramp Down
6 °C/second
Consult factory for other resistance values.
125
60 - 120 seconds
10 seconds minimum
Derating Curve
75
Power Ratio (%)
100
25
0
50
Ramp Up
3 °C/second maximum
100
150
Time (seconds)
200
250
300
-55
70
170
How to Order
Ambient Temperature (°C)
Model
(CRA = Precision Chip Resistor
Size
2512 = 2512 Size
Resistance Tolerance
• F = ±1 %
• J = ±5 %
TCR (PPM/°C)
• Z = ±50 PPM/°C
Resistance Value
“R” (decimal point) followed by three
Packaging
• E = 4000 pieces on 180 mm (7 inch) reel
Termination
• LF = Tin-plated (RoHS compliant)
CRA 2512 - F Z - R020 E LF
digits (example: R025 = 0.025 ohm)
REV. 11/18
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns
®
products manufactured by or on behalf of Bourns, Inc. and
Unless otherwise expressly indicated in writing, Bourns
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products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
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products.
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®
product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
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product as meeting the requirements of a particular industry
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