Features
■ Thick fi lm technology
■ Power rating of 0.25, 0.5 or 1 watt at 70 °C
■ Strong pulse performance
■ RoHS compliant*
Applications
■ Power supplies
■ Stepper motor drives
CRM0805/1206/2010 Chip Resistors
*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.
General Information
Bourns® CRM Series are thick fi lm chip
resistors with high power ratings making
them suitable for different applications in
power supply circuits including current
sensing, current limiting and high pulse
resistance.
DIMENSIONS: MM
(INCHES)
Electrical Characteristics
Characteristic Model Model Model
CRM0805 CRM1206 CRM2010
Power Rating @ 70 °C 0.25 W 0.5 W 1 W
Operating Temperature Range -55 °C to +155 °C
Derated to Zero Load at +155 °C
Maximum Working Voltage
0.047 to 0.91 ohms 477 mV 675 mV 954 mV
1.0 ohm to 1.0 megohm 150 V 200 V 400 V
Insulation Resistance >1000 megohms
Resistance Range 0.047 - 0.91 ohm (E24 Values)
1.0 - 9.1 ohms (E24 Values)
10.0 ohms - 1 megohm (E24 + E96 Values)
Resistance Tolerance ±1 %, ±5 %
Temperature Coeffi cient
0.047 to 0.091 ohms ±150 PPM/°C
0.100 to 0.91 ohms ±100 PPM/°C
1.0 ohm to 1 megohm ±200 PPM/°C
10 ohms to 1 megohm ±100 PPM/°C
Product Dimensions
Derating Curve
Characteristic Data
Test ΔR Max.
Load Life (1000 hours)
Rated Voltage @ 70 °C
(1.5 hrs. on, 0.5 hrs. off)
1 % Tolerance < 1 %
5 % Tolerance < 3 %
Short Term Overload
(5 X Rated Power for 5 sec.)
1 % Tolerance < 1 %
5 % Tolerance < 2 %
Thermal Shock
(5 Cycles: -55 °C/30 min.;
+25 °C/2-3 min.; +155 °C/
30 min.; +25 °C/2-3 min.)
1 % Tolerance < 0.5 %
5 % Tolerance < 1 %
Ambient Temperature (°C)
70 155
100
-55
Power Ratio (%)
Recommended Solder Pad Layout
A
B
SENSING TRACE
Cu TRACE
L
Model A B L
CRM0805 1.3 1.15 1.2
(0.051) (0.045) (0.047)
CRM1206 1.8 1.3 2.1
(0.071) (0.051) (0.083)
CRM2010 3.0 1.5 3.8
(0.118) (0.059) (0.149)
*RoHS COMPLIANT
L
W
C
T
D
Model L W C D T
CRM0805 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)
CRM1206 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)
CRM2010 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)
DIMENSIONS: MM
(INCHES)
For Standard Values Used in Capacitors, Inductors, and Resistors, click here.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
CRM0805/1206/2010 Chip Resistors
Soldering Profi le
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>
Pulse Voltage Curve
10000
1000
100
10
1
10 100 1000
RESISTANCE (OHMS)
Test Method: 1.2/50 μs Waveform with 12 Ohm Resistor, 5 Pulses at 12 Second Interval
s
VOLTS (V)
10000 100000
CRM0805
CRM1206
CRM2010
REV. 02/12
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)
• W = ±200 PPM/°C
• Z = ±150 PPM/°C
• X = ±100 PPM/°C
Resistance Value
R <1 ohm (1 % or 5 % Tolerance: “R” (decimal point) followed by three signifi cant digits (example: R100 = 0.100 ohm
1% Tolerance:
<100 ohms .......“R” represents decimal point (example: 24R3 = 24.3 ohms)
≥100 ohms .......First three digits are signifi cant, fourth digit represents number of zeros to follow
(example: 8252 = 82.5K ohms)
5% Tolerance:
<10 ohms .........“R” represents decimal point (example: 4R7 = 4.7 ohms)
≥10 ohms .........First two digits are signifi cant, third digit represents number of zeros to follow
(example: 474 = 470K ohms)
Packaging
• E = 5000 pieces on 180 mm (7 inch) reel - CRM0805, CRM1206
4000 pieces on 180 mm (7 inch) reel - CRM2010
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.
CRM0805/1206/2010 Chip Resistors
Packaging Dimensions (Conforms to EIA RS-481A)
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)
DIMENSIONS: MM
(INCHES)
1.5 +0.1/-0
(.056 + .004/-0)
Maximum 1 mm (.040) thick
* Cumulative over 10 holes: ±0.2 mm
1.75 ± 0.1
(.059 ± .004)
B
4.0 ± 0.1
(.157 ± .004)
2.0 ± 0.05
(.079 ± .002)
A
W
F
P0
Model A B F W
CRM0805 2.40 ± 0.20 1.65 ± 0.20 3.50 ± 0.05 8.00 ± 0.30
(0.094 ± 0.008) (0.065 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)
CRM1206 3.57 ± 0.20 2.00 ± 0.20 3.50 ± 0.05 8.00 ± 0.30
(0.141 ± 0.008) (0.079 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)
CRM2010 5.50 ± 0.20 2.80 ± 0.20 5.50 ± 0.05 12.00 ± 0.30
(0.217 ± 0.008) (0.110 ± 0.008) (0.217 ± 0.002) (0.472 ± 0.012)
