PL
IA
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M
CO
■ Power supplies
■ Power rating of 2 watts at 70 °C
*R
oH
S
Applications
■ Thick film technology
T
Features
■ Stepper motor drives
■ RoHS compliant*
CRM2512 - Pulse Resistant Power Resistor
Electrical Characteristics
General Information
Model
CRM2512
(0.110 to 0.91 Ω)
Characteristic
Power Rating @ 70 °C
Operating Temp. Range
Derated to Zero Load at
Maximum Working Voltage
Maximum Overload Voltage
Insulation Resistance
Resistance Range
Model
CRM2512
(0 Ω, 1.0 Ω to 1.0 MΩ)
2W
-55 °C to +155 °C
+155 °C
1349 mV
300 V
2698 mV
600 V
> 1000 MΩ
1 Ω - 9.1 Ω
0 Ω,
0.110 - 0.91 Ω
(E24 Values)
1.0 - 1 MΩ
(E24 Values)
10 Ω - 1 MΩ
(E24 Values)
Resistance Tolerance
Temperature Coefficient
±1 % & ±5 %
±100 PPM/°C
±5 %
±200 PPM/°C
(E96 Values)
±1 %
±100 PPM/°C
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.
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 inrush
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)
