CRM

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Features
Applications
■ Thick film technology
■ Current sensing
■ Power rating of 2 watts at 70 °C
■ Power supplies
■ Low resistance value available
■ Stepper motor drives
■ RoHS compliant*
■ Snubber resistor for flyback power supplies
CRM2512 - High Power Current Sense Chip Resistors
Electrical Characteristics
Characteristic
Power Rating @ 70 °C
Operating Temp. Range
Derated to Zero Load at
Maximum Working Voltage
Maximum Overload Voltage
Insulation Resistance
Resistance Range
General Information
Model CRM2512
(0.047 to 0.91 Ω)
(0 Ω,1 Ω to 1 M Ω)
2W
-55 °C to +155 °C
+155 °C
1349 mV
300 V
2698 mV
600 V
> 1000 MΩ
1 Ω - 1 MΩ
0 Ω,
0.047 - 0.91 Ω
1.0 - 1 MΩ
(E96 + E24
(E24 Values)
Resistance Tolerance
Temperature Coefficient
Zero Ohm Jumper
<0.02 Ω Max. Rated Current
±1 % & ±5 %
±100 PPM/°C
(E24 Values)
Values)
±5 %
±200 PPM/°C
±1 %
±100 PPM/°C
6A
Notes:
(1) CRM2512 2 W loading with total solder pad and trace size of 300 mm2.
(2) E = (PxR)1/2
E: Working Voltage (V); P: Rated Power (W); R: Resistance Value (Ω)
(3) Jumper (0 Ω): Rated current 6 A maximum with 300 mm2 pad. Temperature coefficient is not
applicable.
The Bourns® CRM2512 Series is a
thick film power resistor with a rating of
2 watts in a standard 2512 chip format.
This product has a very wide resistance
range making it suitable for different
applications in power supply circuits
including current sensing and current
limiting.
Characteristic Data
ΔR Max.
Test
Load Life (1000 hours)
1 % Tolerance
5 % Tolerance
<1%
<3%
Short Term Overload
1 % Tolerance
5 % Tolerance
<1%
<2%
Thermal Shock
1 % Tolerance
5 % Tolerance
< 0.5 %
<1%
For Standard Values Used in Capacitors, Inductors, and Resistors, click here.
Product Dimensions
Soldering Profile
6.3 ± 0.20
(0.248 ± 0.008)
250
Peak 260 +5/-0 °C
230 °C or higher
3.1 ± 0.20
(0.122 ± 0.008)
Temperature (°C)
TOP SIDE
200
180 °C
150
Pre-heating Zone
0.6 ± 0.20
(0.024 ± 0.008)
150 °C
0.6 ± 0.20
(0.024 ± 0.008)
90 ± 30 seconds
100
30 ± 10 seconds
Soldering Zone
50
Heating Time
1.8 ± 0.20
(0.070 ± 0.008)
Recommended Solder Pad Layout
2.45
(.096)
Power Ratio (%)
Derating Curve
100
3.7
(.146)
7.6
(.299)
-55
70
155
Ambient Temperature (°C)
DIMENSIONS:
*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 device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
MM
(INCHES)
CRM2512 - High Power Current Sense Chip Resistors
Pulse Load Characteristics
PEAK POWER (WATTS)
1000
100
10
1
0.1
0.0001
0.001
0.01
0.1
1
PULSE DURATION (SEC.)
How to Order
CRM 2512 - F X - R100 E LF
Model
(CRM = Precision Chip Resistor)
Size
2512 = 2512 Size
Resistance Tolerance
• F = ±1 %.................Use with “X” TCR code
• J = ±5 % .................Use with “W” TCR code for values from 1 ohm through 1 megohm
Use with “X” TCR code for values from 0.047 ohm through 0.91 ohm
Use with “/” TCR code for 0 ohm (Jumper)
TCR (PPM/°C - See Electrical Characteristics chart)
• W = ±200 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)
≥100 ohms ...........First three digits are significant, 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 significant, third digit represents number of zeros to follow (example: 474 = 470K ohms)
0 ohm Jumper ......“000”
Packaging
• E = 4000 pieces per 180 mm (7 inch) reel
Termination
• LF = Tin-plated (RoHS Compliant)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
CRM2512 - High Power Current Sense Chip Resistors
Packaging Dimensions (Conforms to EIA RS-481A)
PAPER TAPE
TOP TAPE
1.5 +0.1/-0
DIA.
(0.059 +0.004/-0)
1.5
(0.059)
DIA. MIN.
1.75 ± 0.1
(0.069 ± 0.004)
5.5 ± 0.05
(0.217 ± 0.002)
13.0 ± 1.0
(0.512 ± 0.039)
DIA.
180 +0/-3
(7.09 +0/-0.118)
DIA.
12.0 ± 0.2
(0.472 ± 0.008)
RESISTOR
3.60 ± 0.20
(0.142 ± 0.008)
0.85 ± 0.15
(0.033 ± 0.006)
4.0 ± 0.1
(0.157 ± 0.004)
2.0 ± 0.05
(0.079 ± 0.002)
USER DIRECTION OF FEED
DIMENSIONS:
MM
(INCHES)
60.0
(2.362)
MIN.
DIA.
6.9 ± 0.2
(0.272 ± 0.008)
4.0 ± 0.05
(0.157 ± 0.002)
15.4 ± 2.0
(0.606 ± 0.079)
13.0 ± 1.0
(0.512 ± 0.039)
REV. 05/15
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
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