***Resistance value was measured with less than 10 % of rated current.
Parameter
Carrying Capacity ..................................... No fusing ....................................................Rated current, 4 hours
Fusing Time .............................................. Within 5 seconds .......................................250 % of its rated current
Interrupting Ability .................................... No mechanical damages ...........................After the fuse is interrupted, rated voltage applied for
Bending Test ............................................. No mechanical damages ...........................Distance between holding points: 90 mm,
Resistance to Solder Heat ........................ ±20 % ........................................................260 °C ±5 °C,10 seconds ±1 second
Solderability .............................................. 95 % coverage minimum ...........................235 °C ±5 °C, 2 ±0.5 second
Temperature Rise ..................................... <75 ° ..........................................................100 % of its rated current, measure of surface
Resistance to Dry Heat............................. ±20 % ........................................................105 °C ±5 °C,1000 hours
Resistance to Solvent ............................... No evident damage on protective .............23 °C ±5 °C of isopropyl alcohol, 90 seconds coating
Residual Resistance ................................. 10k W or more ...........................................Measure DC resistance after fusing
Thermal Shock ......................................... DR < 10 % .................................................-20 °C / +25 °C /+125 °C /+25 °C, 10 cycles
* RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
** Bourns is using the defi nition that appears to be the prevalent defi nition used as the industry standard at this time. The Bourns defi nition of “halogen-free” is:
“SinglFuse” is a trademark of Bourns, Inc.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Electrical Characteristics
Reliability Testing
Typical Part Marking
Represents total content. Layout may
vary.
Bromine (Br) content: ≤ 900 ppm; Chlorine (Cl) content: ≤ 900 ppm; Total Br + Cl content: ≤1500 ppm.
SF-0402S050
SF-0402S080
SF-0402S100
SF-0402S125
SF-0402S150
SF-0402S160
SF-0402S200
SF-0402S250
SF-0402S300
SF-0402S315
SF-0402S400
Model
RATING CURRENT (A)
F = 0.50
• = 0.75
K = 0.80
L = 1.00
M = 1.25
P = 1.50
Rated Current
N = 1.60
S = 2.00
T = 2.50
3 = 3.00
U = 3.15
W = 4.00
(Amps)
0.50
0.80
1.00
1.25
1.50
1.60
2.00
2.50
3.00
3.15
4.00
Requirement
Open within 5
sec. at 250 %
Fusing Time
rated current
SF-0402S Series - Slow Blow Surface Mount Fuses
SinglFuse
■
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SinglFuse™
Product Designator
SMD Footprint
Fuse Blow Type
Rated Current
Packaging Type
How to Order
Single blow fuse for overcurrent
protection
1005 (EIA 0402) miniature footprint
Slow blow fuse
UL certifi ed
RoHS compliant* and halogen free**
Thin fi lm chip fuse
1005 (EIA 0402) size
F = Fast acting
S = Slow blow
050-400 (500 mA - 4.00 A)
- 2 = Tape & Reel (10,000 pcs./reel)
™
(mΩ) Typ.***
Resistance
SF-0402S Series Features
SF - 0402 S 050 - 2
10.5
235
86
64
45
35
32
24
19
15
14
Test Method
30 seconds again
Bending: 3 mm,1 time, 30 seconds
245 °C ±5 °C, 2 ±0.5 second (lead free)
temperature
and marking
DC 24 V
Voltage
Rated
■
Surface mount packaging for automated
assembly
DC24 V 35 A
Breaking
Capacity
Asia-Pacifi c:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
0.00370
0.00947
0.01479
0.02310
0.02400
0.03734
0.04040
0.06760
0.09860
0.10868
0.11450
Typical
I
2
t (A
2
s)