**
C
HA
O
LO & MP
LI
GE
AN
N
T
FR
EE
SinglFuse
™
SF-0402SxxxM Series Features
n
Single blow fuse for overcurrent protection
n
1005 (EIA 0402) miniature footprint
n
Slow blow fuse (Fusing time ≤5 seconds at 250 % rated current)
n
UL 248-14 listed
n
Surface mount packaging for automated assembly
n
Multilayer SMD design
PL
IA
N
*R
oH
S
n
RoHS compliant* and halogen free**
T
Electrical Characteristics
F
RE
E
Model
SF-0402S050M-2
SF-0402S075M-2
SF-0402S100M-2
SF-0402S150M-2
SF-0402S200M-2
SF-0402S300M-2
SF-0402S400M-2
*** Resistance value measured with ≤10 % rated current at 25 °C ambient.
****Melting I
2
t calculated at 0.001 second pre-arcing time.
Reliability Testing
No.
1
2
3
4
5
6
7
8
9
Test
Soldering heat
resistance
Solderability
Thermal shock
Moisture resistance
Salt spray
Mechanical vibration
Mechanical shock
Life
Terminal strength
Requirement
DCR change ≤ ±10 %
No mechanical damage
Minimum 95 % coverage
DCR change ≤ ±10 %
No mechanical damage
DCR change ≤ ±15 %
No excessive corrosion
DCR change ≤ ±10 %
No excessive corrosion
DCR change ≤ ±10 %
No mechanical damage
DCR change ≤ ±10 %
No mechanical damage
No electrical “opens” during testing.
Voltage drop change shall be less
than ±20 % of initial value.
No mechanical damage
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Rated Current
(Amps)
0.50
0.75
1.00
1.50
2.00
3.00
4.00
*R
oH
S
SF-0402SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
C
OM
Fusing Time
LE
AD
Open within 5
sec. at 250 %
rated current
Resistance
(Ω) Typ.***
0.380
0.210
0.120
0.056
0.035
0.021
0.014
Rated
Voltage
Breaking
Capacity
DC 24 V
DC 24 V
35 A
Typical
I t (A
2
s) ****
0.004
0.007
0.014
0.050
0.070
0.110
0.210
2
Test Reference
MIL-STD-202
One dip at 260 °C for 60 seconds
Method 210
MIL-STD-202
One dip at 245 °C for 5 seconds
Method 208
MIL-STD-202
100 cycles between -65 °C and +125 °C
Method 107
MIL-STD-202
10 cycles
Method 106
MIL-STD-202
48 hour exposure, 5 % salt solution
Method 101
0.4 inch D.A. or 30 G between
MIL-STD-202
5-3000 Hz
Method 204
MIL-STD-202
1500 G, 0.5 ms, half-sine shocks
Method 213
80 % rated current (75 % for ≤1 A fuses)
Refer to STP
for 2000 hours at ambient temperature
document
+20 °C ~ +30 °C
Refer to STP
0.5 Kg pushing force
document
Agency Recognition
UL File Number .................................................... E198545
http://www.ul.com/ Follow link to Online Certificates Directory,
then enter UL File No. E198545, or
click here
Test Condition
Environmental Characteristics
Operating Temperature........................................... -55 °C to +125 °C
Storage Conditions
Temperature ..........................................................+5 °C to +35 °C
Humidity.................................................................... 40 % to 75 %
Shelf Life..................................... 2 years from manufacturing date
Moisture Sensitivity Level ..................................................................1
ESD Classification (HBM)........................................................Class 6
* 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.
“SinglFuse” is a trademark of Bourns, Inc.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different
applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
SinglFuse
™
SF-0402SxxxM Series Applications
n
Portable memory
n
LCD monitors
n
Disk drives
n
PDAs
n
Digital cameras
n
MP3 players
n
Cell phones
n
Rechargeable battery packs
n
Battery chargers
n
Set-top boxes
n
Industrial controllers
n
Battery Management Systems (BMS)
n
LED lighting
n
Power tools
SF-0402SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Typical Part Marking
................ No part marking for this series
How to Order
SinglFuse™
Product Designator
SF - 0402 S 050 M - 2
Construction
FUSE ELEMENT
CERAMIC
BODY
TERMINATION
Packaging Quantity
...................10,000 pieces per 7 inch reel
SMD Footprint
0402 = 1005 (EIA 0402) size
Fuse Blow Type
S = Slow blow
1.00
Rated Current
± 0.10
(.039 ± .004)
050 ~ 400 (0.50 A ~ 4.00 A)
0.51 ± 0.10
(.020 ± .004)
Structure Type
M = Multilayer
0.40
(.016)
Packaging Type
- 2 = Tape & Reel
0.51 ± 0.10
(.020 ± .004)
0.51 ± 0.10
(.020 ± .004)
0.70
(.028)
Product Dimensions
1.00 ± 0.10
1.00(.039 ± .004)
± 0.10
(.039 ± .004)
0.25 ± 0.10
(.010 ± .004)
Recommended Pad Layout
0.40
0.40(.016)
(.016)
1.60
(.063)
0.51 ± 0.10
0.51(.020 ± .004)
± 0.10
(.020 ± .004)
0.51 ± 0.10
0.51(.020 ± .004)
± 0.10
(.020 ± .004)
0.51 ± 0.10
0.51(.020 ± .004)
± 0.10
(.020 ± .004)
0.70
0.70(.028)
(.028)
0.25 ± 0.10
0.25(.010 ± .004)
± 0.10
(.010 ± .004)
1.60
1.60(.063)
(.063)
DIMENSIONS:
MM
(INCHES)
Current Rating Thermal Derating Curve
105
100
95
DERATING (%)
90
85
80
75
70
65
60
55
50
-55
-35
-15
5
25
45
65
85
105
125
MAXIMUM OPERATING TEMPERATURE (°C)
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
SF-0402SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Solder Reflow Recommendations
Tp
MAX. RAMP UP RATE = 3 °C/s
MAX. RAMP DOWN RATE = 6 °C/s
TL
Tsmax
PREHEAT AREA
tp
Tc -5 °C
tL
TEMPERATURE (°C)
Tsmin
ts
Liquidous Temperature (T
L
)
Time (t
L
) maintained above T
L
Peak Package Body
Temperature (T
p
)
Ramp Up Rate (T
L
to T
p
)
Profile Feature
Preheat / Soak:
Temperature Min. (T
smin
)
Temperature Max. (T
smax
)
Time (t
s
) from (T
smin
to T
smax
)
Pb-Free Assembly
150 °C
200 °C
60~120 seconds
3 °C / second max.
217 °C
60~150 seconds
260 °C
30 seconds*
6 °C / second max.
8 minutes max.
25
TIME 25 °C TO PEAK
TIME
Ramp Down Rate (T
p
to T
L
)
Time (t
p
)* within 5 °C of the
specified classification temperature
(T
c
)
Time 25 °C to Peak Temperature
*Tolerance for peak profile temperature (T
p
) is defined as a
supplier minimum and a user maximum.
Average Pre-Arcing Time vs. Current Curves
1.50 A
1.00 A
0.75 A
0.50 A
2.00 A
3.00 A
4.00 A
Average I
2
t vs. t Curves
1000
4.00 A
3.00 A
2.00 A
1.50 A
1.00 A
0.75 A
0.50 A
10
100
1
10
PRE-ARCING TIME (s)
0.1
1
I
2
t (A
2
s)
0.1
0.01
0.01
0.001
0.001
0.0001
0.1
1
10
100
0.0001
0.0001
0.001
0.01
0.1
1
10
CURRENT (A)
REV. B 02/18/18
TIME (s)
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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