Features Applications
n Wide terminal type n Current sensing
n Excellent heat dissipation n Power supplies
n High reliability n Stepper motor drives
n Metal alloy plate n Input amplifiers
n RoHS compliant* and halogen free**
CRK Series Metal Strip, Wide Terminal Current Sense Resistor
Electrical Characteristics Derating Curve
Model
Characteristic
CRK0612 CRK0815
100
Power Rating @ 70 C 1 W
Resistance Value 1 m, 5 m, 10 m 4 m, 5 m, 10 m
Operation Temperature Range -55 ~ +170
Temperature Coefficient of Resistance 50 ppm/C
-55 70 170
Tolerance 1 %, 5 %
Ambient Temperature (C)
Insulation Resistance Over 100 M
1/2
Maximum Working Voltage (V) (P*R)
2
Note: 1 Watts with total solder pad and trace size of 300 mm
Reliability Tests
Test Items Reference Standard Condition of Test Test Limits
Temperature Coefficient IEC60115-1-4.8
+25 C ~ +125 C
of Resistance JIS-C5201-4.8
IEC60115-1-4.25.1 1000 hours at rated power, 70 ,
Load Life < 1 %
JIS-C5201-4.25.1 1.5 hours ON, 0.5 hour OFF
IEC60115-1-4.13
Short Time Overload 5 X rated power for 5 s < 0.5 %
JIS-C5201-4.13
IEC60115-1- 4.24.2.1a)
Moisture no Load 85 , 85 %RH, 1000 hrs < 0.5 %
JIS-C5201- 4.24.2.1a)
IEC60115-1-4.19 -55 & +155 , 100 cycle,
Temperature Cycle < 0.5 %
JIS-C5201-4.19 15 min per extreme condition
Resistance to IEC60115-1-4.18
260 5 for 10 1 sec < 0.5 %
Soldering Heat JIS-C5201-4.18
At least 95 % of surface area
IEC60115-1-4.17
Solderability 245 5 , 2 0.5 sec of electrode shall be covered
JIS-C5201-4.17
with new solder
High Temperature IEC60115-1- 4.23.2
155 , 1000 hrs < 0.5 %
Exposure JIS-C5201-4.23.2
Low Temperature EC60115-1- 4.23.4
-55 , 1000 hrs < 0.5 %
Storage JIS-C5201-4.23.4
IEC60115-1-4.33
Substrate Bending Bending width 2 mm < 1 %
JIS-C5201-4.33
IEC60115-1-4.6
Insulation Resistance 100 V DC for 1 minute >100 M
JIS-C5201-4.6
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns considers a product to be halogen free if (a) the Bromine (Br) content or less; is 900(b) theppm Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br)
and Chlorine (Cl) content is 1500 ppm or less.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
RoHS COMPLIANT*
&
HALOGEN FREE**
*RoHS COMPLIANT
LEAD FREE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Power Ratio (%)CRK Series Metal Strip, Wide Terminal Current Sense Resistor
Product Dimensions
W
W L D t
3.20 0.2 1.70 0.2 0.40 0.2 0.60 0.2
CRK0612
(.126 .008) (.067 .008) (.016 .008) (.027 .008)
L
t
3.75 0.3 2.30 0.2 0.50 0.2 0.70 0.2
CRK0815
(.148 .012) (.091 . 008) (.020 .008) (.028 .008)
MM
D
DIMENSIONS:
(INCHES)
W
Construction Recommended Solder Pad Dimensions
L b
Ni / Sn PLATING
a
OVER-
COATING
METAL ALLOY PLATE
Cu Trace
Sensing Trace
Environmental Characteristics
Storage Conditions
a b L
Temperature ...................................................+5 C ~ +35 C
3.80 0.70 0.70
Humidity ............................................................40 % ~ 75 %
CRK0612
(0.15) (0.03) (0.03)
Shelf Life ..................................2 years from manufacturing date
Solder Recommendations ..................................... Reflow profile
4.20 0.80 1.20
CRK0815
(Solder: Sn96.5 / Ag3 / Cu0.5)
(0.17) (0.03) (0.05)
Moisture Sensitivity Level .......................................................... 1
MM
DIMENSIONS:
(INCHES)
Rated Voltage
The rated voltage is calculated by the following formula:
V= P X R V: Rated Voltage (V)
P: Rated Power (W)
R: Resistance Value (W)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.