CO
M
G E & PL I
AN
N
FR
T*
EE
**
Applications
n High power density
n Power supplies
n High reliability and stability
n Stepper motor drives
n RoHS compliant* and halogen free**
n Input amplifiers
LO
HS
n Metal foil
n Current sensing
CO
M
PL
IA
NT
HA
Ro
Features
*R
oH
S
CFN Series Metal Foil, Current Sense Resistor
FR
AD
CFN0805
0.5 W
Reliability Tests
Test Items
Condition of Test
1000 hours at rated power, 70 ℃,
1.5 hours “ON”, 0.5 hour “OFF”
Load Life
Short Time Overload
Moisture no Load
5 X rated power for 5 s
85 ℃, 85 %RH, 1000 hrs
-55 ℃ & +155 ℃, 100 cycle,
15 min per extreme condition
Temperature Cycle
Resistance to Soldering Heat
260 ±5 ℃ for 10 ±1 sec
Solderability
245 ±5 ℃, 2 ±0.5 sec
High Temperature Exposure
Low Temperature Storage
Substrate Bending
Insulation Resistance
155 ℃, 1000 hrs
-55 ℃, 1000 hrs
Bending width 2 mm
100 V DC for 1 minute
Power Ratio (%)
Derating Curve
70
CFN1206
1W
∆R Maximum
< ±1 %
< ±1 %
< ±1 %
< ±1 %
< ±0.5 %
At least 95 % of surface area of electrode shall
be covered with new solder
< ±1 %
< ±1 %
< ±0.5 %
>100 MΩ
Environmental Characteristics
100
-55
5 mΩ, 10 mΩ, 20 mΩ
-55 ℃ ~ +155 ℃
±100 ppm/°C
±1 %, ±5 %
Ro VER LEA
HS SI D F
CO ON RE
M SA E
PL R
IA E
NT
*
LE
Characteristic
Power Rating @ 70 °C
Resistance Value
Operation Temperature Range
Temperature Coefficient of Resistance
Tolerance
EE
Electrical Characteristics
155
Storage Conditions
Temperature........................................................................................ +5 °C ~ +35 °C
Humidity..................................................................................................40 % ~ 75 %
Shelf Life........................................................................2 years from manufacturing date
Solder Recommendations........................................................................... Reflow profile
(Solder: Sn96.5 / Ag3 / Cu0.5)
Moisture Sensitivity Level................................................................................................ 1
Ambient Temperature (°C)
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 is 900 ppm or less; (b) the 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.
CFN Series Metal Foil, Current Sensing Chip Resistor
Product Dimensions
W
L
C
W
L
D
t
CFN0805
2.00 ± 0.20
(.079 ± .008)
1.25 ± 0.20
(.049 ± .008)
0.40 ± 0.20
(.016 ± .008)
0.70 ± 0.20
(.028 ± .008)
CFN1206
3.20 ± 0.20
(.126 ± .008)
1.60 ± 0.20
(.063 ±. 008)
0.50 ± 0.20
(.020 ± .008)
0.70 ± 0.20
(.028 ± .008)
DIMENSIONS:
T
C
Construction
MM
(INCHES)
Recommended Solder Pad Dimensions
L
Ni / Sn PLATING
B
OVERCOATING
A
METAL ALLOY PLATE
Cu Trace
Marking
Sensing Trace
CFN0805
RESISTANCE CODE:
005 = 5 mΩ
010 = 10 mΩ
020 = 20 mΩ
Popular Resistance Values*
6 ≤ R < 10
10 ≤ R ≤ 30
A
L
1.40
(.055)
3.20
(.126)
10 ≤ R < 20
1.80
(.071)
4.70
(.185)
Resistance Value (milliohms
R005
5
R010
10
R020
20
1.20
(.047)
DIMENSIONS:
1.80
(.071)
2.20
(.087)
20 ≤ R ≤ 40
Code
0.80
(.031)
1.20
(.047)
6 ≤ R < 10
CFN1206
B
MM
(INCHES)
*Please consult factory for other resistance values
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.
CFN Series Metal Foil, Current Sensing Chip Resistor
Solder Reflow Recommendations
Solder Profile
tp
TP
CRITICAL ZONE
T L TO TP
RAMP-UP
TL
Temperature
tL
TS MAX.
RAMP-DOWN
TS MIN.
ts
PREHEAT
25 °C
8 MINUTES MAX.
t 25 *C TO PEAK
Time
Lead Free Assembly
Average ramp-up rate
(Tsmax to Tp)
3 °C / second max.
Preheat:
- Temperature Min. (Tsmin)
- Temperature Max. (Tsmax)
- Time (Tsmin to Tsmax) (ts)
150 °C
200 °C
60~150 seconds
Time maintained above:
- Temperature (TL)
- Time (TL)
217 °C
60~120 seconds
Peak Temperature (Tp)
260 °C
Time within +0/-5 °C of actual
Peak Temperature (Tp)2
10 seconds
Time 25 °C to Peak
Temperature
8 minutes max.
Ramp-down rate
6 °C / second max.
How to Order
CFN 0805 - F X - R005 E LF
Model
CFN = Metal Foil Current Sense Resistor
Size
0805 = 0805 Size
1206 = 1206 Size
Resistance Tolerance
F = ±1 %
J = ±5 %
TCR
X = ±100 PPM/°C
Resistance Code – (See Popular Resistance Table)
“R” (decimal point) followed by three significant digits (example: R005 = 0.005 ohms)
Packaging
E = Tape and Reel
4,000 pcs. / 7-inch reel, paper tape
Termination
LF = Tin-plated (RoHS Compliant)
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.
CFN Series
Metal
Foil,Trimming
Current Sensing
Chip Resistor
3312
- 2 mm
SMD
Potentiometer
Packaging Dimensions (Conforms to EIA RS-481A)
1.75 ± 0.10
(.069 ± .004)
4.00 ± 0.10
(.157 ± .004)
Top Tape
1.55 ± 0.10
DIA.
(.061 ± .004)
Bottom Tape
3.50 ± 0.05
(.138 ± .002)
3.60 ± 0.20
(.142 ± .008)
Resistor
8.00 ± 0.20
(.315 ± .008)
Paper Tape
1.05 ± 0.10
(.041 ± .004)
4.00 ± 0.10
(.157 ± .004)
2.00 ± 0.15
(.079 ± .006)
2.00 ± 0.10
(.079 ± .004)
DIRECTION OF UNREELING
DIMENSIONS:
MM
(INCHES)
9.0 ± 1.0
(.354 ± .039)
13.0 ± 1.0
(.512 ± .039)
DIA.
DIA.
178 ± 2.0
(7.008 ± .079)
DIA.
60.0 ± 1.0
(2.362 ± .039)
11.5 ± 1.0
(.453 ± .039)
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
02/19
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.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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and complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns®/1.#4"3(- 42$1 //+(" 3(.-, 85 18
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of Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to
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