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CRM2512-FX-R270ELF

Description
Thick Film Resistors - SMD 2watts 1% .27ohms 100 PPM 2512
CategoryPassive components   
File Size345KB,3 Pages
ManufacturerBourns
Websitehttp://www.bourns.com
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CRM2512-FX-R270ELF Overview

Thick Film Resistors - SMD 2watts 1% .27ohms 100 PPM 2512

CRM2512-FX-R270ELF Parametric

Parameter NameAttribute value
Product CategoryThick Film Resistors - SMD
ManufacturerBourns
RoHSDetails
Resistance0.27 Ohms
Tolerance1 %
PackagingReel
Factory Pack Quantity4000
NT
Features
Thick film technology
Power rating of 2 watts at 70 °C
Low resistance value available
RoHS compliant*
Applications
Current sensing
Power supplies
Stepper motor drives
Snubber resistor for flyback power supplies
*R
oH
S
CO
M
PL
IA
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
Resistance Tolerance
Temperature Coefficient
Zero Ohm Jumper
<0.02
Ω
Max. Rated Current
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 M
Ω
0
Ω,
0.047 - 0.91
Ω
1.0 - 1 M
Ω
(E96 + E24
(E24 Values)
(E24 Values)
Values)
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 current
limiting.
Characteristic Data
Test
Load Life (1000 hours)
1 % Tolerance
5 % Tolerance
Short Term Overload
1 % Tolerance
5 % Tolerance
Thermal Shock
1 % Tolerance
5 % Tolerance
ΔR
Max.
<1%
<3%
<1%
<2%
< 0.5 %
<1%
±1 % & ±5 %
±100 PPM/°C
±5 %
±200 PPM/°C
6A
±1 %
±100 PPM/°C
Notes:
(1) CRM2512 2 W loading with total solder pad and trace size of 300 mm
2
.
(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 mm
2
pad. Temperature coefficient is not
applicable.
For Standard Values Used in Capacitors, Inductors, and Resistors,
click here.
Soldering Profile
Product Dimensions
6.3 ± 0.20
(0.248 ± 0.008)
250
Peak 260 +5/-0 °C
230 °C or higher
TOP SIDE
3.1 ± 0.20
(0.122 ± 0.008)
Temperature (°C)
200
180 °C
150
100
150 °C
Pre-heating Zone
0.6 ± 0.20
(0.024 ± 0.008)
90 ± 30 seconds
30 ± 10 seconds
Soldering Zone
50
Heating Time
1.8 ± 0.20
(0.070 ± 0.008)
0.6 ± 0.20
(0.024 ± 0.008)
Recommended Solder Pad Layout
Derating Curve
2.45
(.096)
Power Ratio (%)
100
3.7
(.146)
7.6
(.299)
-55
70
155
Ambient Temperature (°C)
DIMENSIONS:
MM
(INCHES)
*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.
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