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CRM Datasheet(PDF) 1 Page - Bourns Electronic Solutions

Part No. CRM
Description  CRM2512 - Pulse Resistant Power Resistor
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Maker  BOURNS [Bourns Electronic Solutions]
Homepage  http://www.bourns.com
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CRM Datasheet(HTML) 1 Page - Bourns Electronic Solutions

   
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Features
Thick film technology
Power rating of 2 watts at 70 °C
RoHS compliant*
Applications
Power supplies
Stepper motor drives
CRM2512 - Pulse Resistant Power Resistor
*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.
General Information
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.
DIMENSIONS:
MM
(INCHES)
Electrical Characteristics
Product Dimensions
Derating Curve
Characteristic Data
Test
ΔR Max.
Load Life (1000 hours)
1 % Tolerance
< 1 %
5 % Tolerance
< 3 %
Short Term Overload
1 % Tolerance
< 1 %
5 % Tolerance
< 2 %
Thermal Shock
1 % Tolerance
< 0.5 %
5 % Tolerance
< 1 %
6.3 ± 0.20
(0.248 ± 0.008)
TOP SIDE
3.1 ± 0.20
(0.122 ± 0.008)
0.6 ± 0.20
(0.024 ± 0.008)
0.6 ± 0.20
(0.024 ± 0.008)
1.8 ± 0.20
(0.070 ± 0.008)
Ambient Temperature (°C)
70
155
100
-55
Recommended Solder Pad Layout
Soldering Profile
50
100
150
200
250
90 ± 30 seconds
Pre-heating Zone
150 °C
230 °C or higher
Peak 260 +5/-0 °C
180 °C
30 ± 10 seconds
Heating Time
Soldering Zone
For Standard Values Used in Capacitors, Inductors, and Resistors, click here.
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.
Characteristic
Model
CRM2512
(0.110 to 0.91
Ω)
Model
CRM2512
(0
Ω, 1.0 Ω to 1.0 MΩ)
Power Rating @ 70 °C
2 W
Operating Temp. Range
-55 °C to +155 °C
Derated to Zero Load at
+155 °C
Maximum Working Voltage
1349 mV
300 V
Maximum Overload Voltage
2698 mV
600 V
Insulation Resistance
> 1000 M
Ω
Resistance Range
0.110 - 0.91
Ω
(E24 Values)
0
Ω,
1.0 - 1 M
Ω
(E24 Values)
1
Ω - 9.1 Ω
(E24 Values)
10
Ω - 1 MΩ
(E96 Values)
Resistance Tolerance
±1 % & ±5 %
±5 %
±1 %
Temperature Coefficient
±100 PPM/°C
±200 PPM/°C
±100 PPM/°C
7.6
(.299)
3.7
(.146)
2.45
(.096)


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