Features
Applications
■
Current sensing
■
Power supplies
■
Stepper motor drives
■
Snubber resistor for flyback power supplies
R10
0
Electrical Characteristics
Characteristic
Power Rating @ 70 °C
Operating Temperature Range
Derated to Zero Load at
Maximum Working Voltage
47 mohms to 910 mohms
1 ohm to 1 megohm
Insulation Resistance
Resistance Range
Model
CRM0805
0.25 W
■
Thick film technology
■
Power rating of 0.25, 0.5 or 1 watt at 70 °C
■
Low resistance value available
■
RoHS compliant*
CRM0805/1206/2010 High Power Current Sense Chip Resistors
Additional Information
Model
CRM1206
0.5 W
-55 °C to +155 °C
+155 °C
Model
CRM2010
1W
Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES
SELECTOR LIBRARY
CONTACT
Resistance Tolerance
Temperature Coefficient
47 mohms to 91 mohms
(±1 % and ±5 %, E24 Series)
100 mohms to 910 mohms
(±1 % and ±5 %, E24 Series)
1 ohm to 9.76 ohms
(±1 %, E96 & E24 Series)
10 ohms to 1 megohm
(±1 %, E96 & E24 Series)
1 ohm to 1 megohm
(±5 %, E24 Series)
Zero Ohm Jumper <0.02 ohm
(1)
Maximum Rated Current
675 mV
954 mV
200 V
200 V
>1000 megohms
47 mohms to 910 mohms (±1 % and ±5 %, E24 Series)
1 ohm to 1 megohm (±1 %, E96 & E24 Series)
0 ohm, 1 ohm to 1 megohm (±5 %, E24 Series)
±1 %, ±5 %
551 mV
150 V
General Information
Bourns
®
CRM Series are thick film chip
resistors with high power ratings making
them suitable for different applications in
power supply circuits including current
sensing and current limiting.
Characteristic Data
±100 ppm
±100 ppm
±150 ppm/
±200 ppm
±100 ppm
±200 ppm
4A
±100 ppm
±100 ppm
±100 ppm/
±200 ppm
±100 ppm
±200 ppm
4A
±100 ppm
±100 ppm
±100 ppm/
±200 ppm
±100 ppm
±200 ppm
6A
Test
Load Life (1000 hours)
Rated Voltage @ 70 °C
(1.5 hrs. on, 0.5 hrs. off)
1 % Tolerance
5 % Tolerance
Short Term Overload
(5 X Rated Power for 5 sec.)
1 % Tolerance
5 % Tolerance
Thermal Shock
(5 Cycles: -55 °C/30 min.;
+25 °C/2-3 min.; +155 °C/
30 min.; +25 °C/2-3 min.)
1 % Tolerance
5 % Tolerance
ΔR
Max.
<1%
<3%
<1%
<2%
Exceptions:
(1)
Jumper (0 ohms): Temperature coefficient is not applicable.
Pulse Load Characteristics
1000
< 0.5 %
<1%
For Standard Values Used in Capacitors,
Inductors and Resistors,
click here.
PEAK POWER (WATTS)
100
10
CRM2010
CRM1206
1
CRM0805
0.1
0.0001
0.001
0.01
0.1
1
PULSE DURATION (SEC.)
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.
CRM0805/1206/2010 High Power Current Sense Chip Resistors
Product Dimensions
Model
CRM0805
CRM1206
CRM2010
L
W
C
D
T
L
2.00 ± 0.15
1.20 ± 0.15
0.40 ± 0.20
0.40 ± 0.20
0.50 ± 0.10
(0.079 ± 0.006) (0.047 ± 0.006) (0.016 ± 0.008) (0.016 ± 0.008) (0.020 ± 0.04)
3.10 ± 0.15
1.60 ± 0.15
0.50 ± 0.25
0.50 ± 0.25
0.55 ± 0.10
(0.122 ± 0.006) (0.063 ± 0.006) (0.020 ± 0.010) (0.020 ± 0.010) (0.022 ± 0.004)
5.00 ± 0.20
2.50 ± 0.20
0.60 ± 0.25
0.60 ± 0.25
0.60 ± 0.10
(0.197 ± 0.008) (0.098 ± 0.008) (0.024 ± 0.010) (0.024 ± 0.010) (0.024 ± 0.004)
D
W
C
T
Recommended Solder Pad Layout
Model
CRM0805
CRM1206
CRM2010
DIMENSIONS:
MM
(INCHES)
A
1.3
(0.051)
1.8
(0.071)
3.0
(0.118)
B
1.15
(0.045)
1.3
(0.051)
1.5
(0.059)
L
1.2
(0.047)
2.1
(0.083)
3.8
(0.149)
Cu TRACE
L
B
A
SENSING TRACE
Soldering Profile
275
<1>
Maximum of 20 seconds between
Derating Curve
260 °C peak
Power Ratio (%)
+255 °C and +260 °C
225
<1>
255 °C
220 °C
100
Temperature (°C)
190 °C
175
150 °C
90 - 150
seconds
Ramp Down
6 °C/second
125
60 - 120 seconds
10 seconds minimum
75
Ramp Up
3 °C/second maximum
25
0
50
100
150
200
250
300
-55
70
155
Ambient Temperature (°C)
Time (seconds)
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.
CRM0805/1206/2010 High Power Current Sense Chip Resistors
How to Order
CRM 2010 - F X - R100 E LF
Model
(CRM = Precision Chip Resistor)
Size
0805 = 0805 Size
1206 = 1206 Size
2010 = 2010 Size
Resistance Tolerance
• F = ±1 %
• J = ±5 %
TCR (PPM/°C - See Electrical Characteristics chart)
• W = ±200 PPM/°C
• Z = ±150 PPM/°C
• X = ±100 PPM/°C
• / = Jumper
Resistance Value
• 1 % or 5 % Tolerance:
R <1 ohm..............“R” represents decimal point followed by three significant digits
(example: R100 = 0.100 ohm)
• 1% Tolerance:
<100 ohms ...........“R” represents decimal point (example: 24R3 = 24.3 ohms)
ohms ...........First three digits are significant, fourth digit represents number of zeros to follow
(example: 8252 = 82.5K ohms)
≥100
• 5% Tolerance:
<10 ohms .............“R” represents decimal point (example: 4R7 = 4.7 ohms)
ohms
≥10
.............First two digits are significant, third digit represents number of zeros to follow
(example: 474 = 470K ohms)
0 ohm Jumper ......“000”
Packaging
• E = 5,000 pieces on 180 mm (7 inch) reel - CRM0805, CRM1206
4,000 pieces on 180 mm (7 inch) reel - CRM2010
Termination
• LF = Tin-plated (RoHS Compliant)
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.
CRM0805/1206/2010 High Power Current Sense Chip Resistors
Packaging Dimensions (Conforms to EIA RS-481A)
4.0
±
0.1
(.157
±
.004)
B
A
2.0
±
0.05
(.079
±
.002)
13.0 ± 1.0
(0.512 ± 0.039)
DIA.
180 +0/-3
(7.09 +0/-0.118)
DIA.
W
F
60.0
(2.362)
MIN.
DIA.
P0
1.5 +0.1/-0
(.056 + .004/-0)
1.75
±
0.1
(.059
±
.004)
15.4 ± 2.0
(0.606 ± 0.079)
13.0 ± 1.0
(0.512 ± 0.039)
Maximum 1 mm (.040) thick
* Cumulative over 10 holes: ±0.2 mm
Model
CRM0805
CRM1206
CRM2010
A
2.40 ± 0.20
(0.094 ± 0.008)
3.57 ± 0.20
(0.141 ± 0.008)
5.50 ± 0.20
(0.217 ± 0.008)
B
F
W
1.65 ± 0.20
3.50 ± 0.05
8.00 ± 0.30
(0.065 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)
2.00 ± 0.20
3.50 ± 0.05
8.00 ± 0.30
(0.079 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)
2.80 ± 0.20
5.50 ± 0.05
12.00 ± 0.30
(0.110 ± 0.008) (0.217 ± 0.002) (0.472 ± 0.012)
DIMENSIONS:
MM
(INCHES)
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 09/19
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
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
The characteristics and parameters of a Bourns
®
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
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
®
Bourns
®
on a case-by-case basis, use of any Bourns
®
®
®
®
®
Bourns
®
®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
®
and the user for which such Bourns
®
®
custom products shall be negotiated on a case-by-case basis by Bourns
®
also apply to such Bourns custom products.
Users shall not sell, transfer, export or re-export any Bourns
®
Bourns
®
standard products shall
products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns
®
products may not, without
®
bilingual versions are available at:
Web Page:
http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF:
http://www.bourns.com/docs/Legal/disclaimer.pdf
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