Features Applications
Thick lm technology Power supplies
Power rating of 0.25, 0.5 or 1 watt at 70 C Stepper motor drives
Strong pulse performance
RoHS compliant*
CRM0805/1206/2010 Chip Resistors
Electrical Characteristics General Information
Bourns CRM Series are thick lm chip
Model Model Model
resistors with high power ratings making
Characteristic
CRM0805 CRM1206 CRM2010
them suitable for different applications
in power supply circuits including
Power Rating @ 70 C 0.25 W 0.5 W 1 W
current sensing, current limiting and
Operating Temperature Range -55 C to +155 C
high pulse resistance.
Derated to Zero Load at +155 C
Maximum Working Voltage
Characteristic Data
0.047 to 0.91 ohms 477 mV 675 mV 954 mV
1.0 ohm to 1.0 megohm 150 V 200 V 200 V
Test R Max.
Insulation Resistance >1000 megohms
Load Life (1000 hours)
Resistance Range 0.047 - 1 megohm
Rated Voltage @ 70 C
(1.5 hrs. on, 0.5 hrs. off)
Resistance Tolerance 1 %, 5 %
1 % Tolerance < 1 %
Temperature Coef cient
5 % Tolerance < 3 %
0.047 to 0.091 ohms 150 PPM/C
Short Term Overload
0.100 to 0.91 ohms 100 PPM/C
(5 X Rated Power for 5 sec.)
1.0 ohm to 1 megohm 200 PPM/C (T olerance 5 %, E24 Values)
1 % Tolerance < 1 %
10 ohms to 1 megohm 100 PPM/C (T olerance 1 %, E96 Values)
5 % Tolerance < 2 %
Thermal Shock
Product Dimensions
(5 Cycles: -55 C/30 min.;
L
+25 C/2-3 min.; +155 C/
30 min.; +25 C/2-3 min.)
T
1 % Tolerance < 0.5 %
MM
DIMENSIONS:
5 % Tolerance < 1 %
W
(INCHES)
D
C Derating Curve
Model L W C D T
100
2.00 0.15 1.20 0.15 0.40 0.20 0.40 0.20 0.50 0.10
CRM0805
(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
CRM1206
(0.122 0.006) (0.063 0.006) (0.020 0.010) (0.020 0.010) (0.022 0.004)
-55 70 155
5.00 0.20 2.50 0.20 0.60 0.25 0.60 0.25 0.60 0.10
CRM2010
(0.197 0.008) (0.098 0.008) (0.024 0.010) (0.024 0.010) (0.024 0.004)
Ambient Temperature (C)
Recommended Solder Pad Layout
L B
Model A B L
1.3 1.15 1.2
CRM0805
(0.051) (0.045) (0.047)
A
1.8 1.3 2.1
CRM1206
(0.071) (0.051) (0.083)
3.0 1.5 3.8
Cu TRACE
CRM2010
SENSING TRACE
(0.118) (0.059) (0.149)
MM
DIMENSIONS:
(INCHES)
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications.
*RoHS COMPLIANT
Power Ratio (%)
CRM0805/1206/2010 Chip Resistors
Soldering Pro le Resistance Value Table (0.047-0.91 )
275
Code R Value Code R Value
<1>
Maximum of 20 seconds between 260 C peak
+255 C and +260 C <1>
255 C R047 0.047 R200 0.200
225
R050 0.050 R300 0.300
220 C
R060 0.060 R510 0.510
190 C 90 - 150
seconds
R075 0.075 R750 0.750
175
150 C Ramp Down
R082 0.082 R820 0.820
6 C/second
R090 0.090 R910 0.910
125
60 - 120 seconds
R100 0.100
10 seconds minimum
75
Ramp Up
3 C/second maximum
25
0 50 100 150 200 250 300
Time (seconds)
Pulse Voltage Curve
10000
1000
CRM2010
CRM1206
100
CRM0805
10
1
10 100 1000 10000 100000
RESISTANCE (OHMS)
Test Method: 1.2/50 s Waveform with 12 Ohm Resistor, 5 Pulses at 12 Second Intervals
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications.
VOLTS (V)
Temperature (C)