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
n RoHS compliant* and halogen free**
Electrical Characteristics
SF-0402SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Model
Rated Current
(Amps)
Fusing Time
Resistance
(Ω) Typ.***
Rated
Voltage
Breaking
Capacity
Typical
I
2
t (A
2
s) ****
SF-0402S050M-2 0.50
Open within 5
sec. at 250 %
rated current
0.380
DC 24 V
DC 24 V
35 A
0.004
SF-0402S075M-2 0.75 0.210 0.007
SF-0402S100M-2 1.00 0.120 0.014
SF-0402S150M-2 1.50 0.056 0.050
SF-0402S200M-2 2.00 0.035 0.070
SF-0402S300M-2 3.00 0.021 0.110
SF-0402S400M-2 4.00 0.014 0.210
Reliability Testing
SinglFuse
™
SF-0402SxxxM Series Features
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 Classication (HBM)........................................................Class 6
Environmental Characteristics
*** Resistance value measured with ≤10 % rated current at 25 °C ambient. Tolerance ±25 %.
****Melting I
2
t calculated at 0.001 second pre-arcing time.
No. Test Requirement Test Condition Test Reference
1
Soldering heat
resistance
DCR change ≤ ±10 %
No mechanical damage
One dip at 260 °C for 60 seconds
MIL-STD-202
Method 210
2 Solderability Minimum 95 % coverage One dip at 245 °C for 5 seconds
MIL-STD-202
Method 208
3 Thermal shock
DCR change ≤ ±10 %
No mechanical damage
100 cycles between -65 °C and +125 °C
MIL-STD-202
Method 107
4 Moisture resistance
DCR change ≤ ±15 %
No excessive corrosion
10 cycles
MIL-STD-202
Method 106
5 Salt spray
DCR change ≤ ±10 %
No excessive corrosion
48 hour exposure, 5 % salt solution
MIL-STD-202
Method 101
6 Mechanical vibration
DCR change ≤ ±10 %
No mechanical damage
0.4 inch D.A. or 30 G between
5-3000 Hz
MIL-STD-202
Method 204
7 Mechanical shock
DCR change ≤ ±10 %
No mechanical damage
1500 G, 0.5 ms, half-sine shocks
MIL-STD-202
Method 213
8 Life
No electrical “opens” during testing.
Voltage drop change shall be less
than ±20 % of initial value.
80 % rated current (75 % for ≤1 A fuses)
for 2000 hours at ambient temperature
+20 °C ~ +30 °C
Refer to STP
document
9 Terminal strength No mechanical damage 0.5 Kg pushing force
Refer to STP
document
UL File Number .................................................................E198545
Agency Recognition
* 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.
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.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
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
Product Dimensions Recommended Pad Layout
DIMENSIONS:
MM
(INCHES)
Current Rating Thermal Derating Curve
Construction
SinglFuse
™
SF-0402SxxxM Series Applications
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.
Typical Part Marking
................ No part marking for this series
How to Order
SF - 0402 S 050 M - 2
SinglFuse™
Product Designator
SMD Footprint
0402 = 1005 (EIA 0402) size
Fuse Blow Type
S = Slow blow
Rated Current
050 ~ 400 (0.50 A ~ 4.00 A)
Structure Type
M = Multilayer
Packaging Type
- 2 = Tape & Reel
105
80
70
60
55
65
75
85
90
95
100
50
-55 -35 -15 5
MAXIMUM OPERATING TEMPERATURE (°C)
DERATING (%)
25 45 65 85 105 125
1.00 ± 0.10
(.039 ± .004)
0.25 ± 0.10
(.010 ± .004)
0.70
(.028)
0.51 ± 0.10
(.020 ± .004)
1.60
(.063)
0.40
(.016)
0.51 ± 0.10
(.020 ± .004)
0.51 ± 0.10
(.020 ± .004)
CERAMIC
BODY
FUSE ELEMENT
TERMINATION
1.00 ± 0.10
(.039 ± .004)
0.25 ± 0.10
(.010 ± .004)
0.70
(.028)
0.51 ± 0.10
(.020 ± .004)
1.60
(.063)
0.40
(.016)
0.51 ± 0.10
(.020 ± .004)
0.51 ± 0.10
(.020 ± .004)
1.00 ± 0.10
(.039 ± .004)
0.25 ± 0.10
(.010 ± .004)
0.70
(.028)
0.51 ± 0.10
(.020 ± .004)
1.60
(.063)
0.40
(.016)
0.51 ± 0.10
(.020 ± .004)
0.51 ± 0.10
(.020 ± .004)
Packaging Quantity
10,000 pieces per 7 inch reel