SURFACE-MOUNT FUSES
Fast-Acting Chip Fuses
Fast-acting
chip
fuses
help
provide
overcurrent
protection for systems using DC power sources up to
63VDC. The fuse’s monolithic, multilayer design helps
provide the highest hold current in the smallest footprint,
reduce
diffusion-related
aging,
improve
product
reliability and resilience, and enhance high-temperature
performance in a wide range of circuit designs.
These RoHS-compliant surface-mount devices offer
strong arc suppression characteristics and help facilitate
the development of more reliable, high-performance
consumer electronics such as laptops, multimedia devices,
cell phones and other portable electronics.
BENEFITS
APPLICATIONS
• Small size with high current ratings
• Laptops
• Temperature stability
• Digital cameras
• High reliability and resilience
• Cell phones
• Strong arc suppression characteristics
• Printers
• DVD players
FEATURES
• Portable electronics
• Lead-free and RoHS compliant
• Game systems
• Halogen free
(refers to: Br900ppm, Cl900ppm, Br+Cl1500ppm)
• LCD monitors
• Scanners
• Monolithic, multilayer design
• High-temperature performance
• -55°C to +125°C operating temperature range
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
89
Surface Mount Fuses
Fast-Acting Chip Fuses
Table FF1 — Clear Time Characteristics
% of Rated Current
Clear Time at 25°C
100%
4 hrs (min)
250%
5 s (max)
400%
0.05 s (max)
Table
FF2 — Typical Electrical Characteristics, Dimensions and Recommended
Shape and
Dimensions
in (mm)
Pad Layout
Shape and
0.020±0.004
(0.51±0.10)
0.039±0.004
(1.00±0.10)
0.020±0.004
(0.51±0.10)
0.039±0.004
0.020±0.004
(1.00±0.10)
0402Dimensions
(1005mm) Fast-Acting Chip
Fuses
(0.51±0.10)
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
Typical Electrical Characteristics
0.020±0.004
0.010±0.004 0.039±0.004
0.020±0.004
(0.51±0.10)
(0.25±0.10) (1.00±0.10)
(0.51±0.10)
0.010±0.004
0.063
(0.25±0.10)
(1.60)
0.016
(0.40)
0.010±0.004
0.063
(0.25±0.10)
(1.60)
Part Number
0.020±0.004
(0.51±0.10)
0.028
(0.70)
0.016
(0.40)
0.063
(1.60)
0.024
(0.60)
0.028
(0.70)
0.016
(0.40)
0.024
(0.60)
Rated
Current
(A)
Max Interrupt Ratings
Nominal Nominal
Cold DCR
I 2t
(Ω)*
(A2sec)†
Voltage
(VDC)
Current
(A)
0402SFF100F/24
1.00
0.120
0.0170
24
35
0402SFF150F/24
1.50
0.056
0.0490
24
35
0402SFF200F/24
2.00
0.035
0.0700
24
35
0402SFF300F/24
3.00
0.021
0.1250
24
35
0402SFF400F/24
4.00
0.014
0.2250
24
35
0.028
(0.70)
0.024
(0.60)
Shape and
0.031±0.006
0.063±0.006
(0.80±0.15)
0603Dimensions
(1608mm) Fast-Acting
Chip
Fuses
(1.60±0.15)
in (mm)
Shape and
Dimensions
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
0.031±0.006
(0.80±0.15)
Typical Electrical Characteristics
0.063±0.006
(1.60±0.15)
0.031±0.006
(0.80±0.15)
0.031±0.006
(0.80±0.15)
0.014±0.006
(0.36±0.15)
Part Number
0.063±0.006
(1.60±0.15)
0.031±0.006
(0.80±0.15)
0.031±0.006
(0.80±0.15)
0.014±0.006
0.110
(0.36±0.15)
(2.80)
0.024
(0.60)
0.110
0.014±0.006
(2.80)
(0.36±0.15)
0.043
(1.09)
0.039
(1.00)
0.024
(0.60)
0.110
(2.80)
0.039
(1.00)
0.024
(0.60)
0.043
(1.09)
0.039
(1.00)
0.063±0.008
(1.60±0.20)
0.485
0.0029
63
35
0.75
0.254
0.0064
63
35
0603SFF100F/32
1.00
0.147
0.0160
63
35
0603SFF150F/32
1.50
0.059
0.0300
63
35
0603SFF200F/32
2.00
0.044
0.0600
32
35
0603SFF250F/32
2.50
0.032
0.1150
32
35
0603SFF300F/32
3.00
0.025
0.1900
32
35
0603SFF350F/32
3.50
0.024
0.2950
32
35
0603SFF400F/32
4.00
0.018
0.4000
32
35
0603SFF500F/32
5.00
0.013
0.7000
32
35
0603SFF600F/24
6.00
0.010
1.1250
24
35
Part Number
0.126±0.008
(3.20±0.20)
0.063±0.008
(1.60±0.20)
0.126±0.008
(3.20±0.20)
0.043±0.008
(1.10±0.20)
0.043±0.008
(1.10±0.20)
0.020±0.010
(0.51±0.25)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
Recommended
Pad Layout
in (mm)
0.043±0.008
(1.10±0.20)
0.020±0.010
0.173
(0.51±0.25)
(4.40)
0.059
(1.50)
0.020±0.010
0.173
(0.51±0.25)
(4.40)
0.057
(1.45)
0.057
(1.45)
0.059
(1.50)
0.173
(4.40)
0.059
(1.50)
0.071
(1.80)
0.071
(1.80)
0.071
(1.80)
Current
(A)
0.50
Typical Electrical Characteristics
0.126±0.008
(3.20±0.20)
Voltage
(VDC)
0603SFF075F/32
0.043
0.063±0.008
(1.60±0.20)
Max Interrupt Ratings
Nominal Nominal
Cold DCR
I 2t
(Ω)*
(A2sec)†
0603SFF050F/32
(1.09)
1206 (3216mm) Fast-Acting
Chip Fuses
Shape and
Dimensions
in (mm)
Shape and
Dimensions
in (mm)
Shape and
Dimensions
in (mm)
Rated
Current
(A)
1206SFF050F/63
1206SFF075F/63
1206SFF100F/63
1206SFF150F/63
1206SFF175F/63
1206SFF200F/63
1206SFF250F/32
1206SFF300F/32
1206SFF400F/32
1206SFF500F/32
1206SFF600F/32
1206SFF700F/32
1206SFF800F/32
1206SFF600F/24
1206SFF700F/24
1206SFF800F/24
Rated
Current
(A)
0.50
0.75
1.00
1.50
1.75
2.00
2.50
3.00
4.00
5.00
6.00
7.00
8.00
6.00
7.00
8.00
Max Interrupt Ratings
Nominal Nominal
Cold DCR
I 2t
(Ω)*
(A2sec)†
0.730
0.513
0.220
0.120
0.100
0.050
0.035
0.031
0.022
0.015
0.013
0.011
0.008
0.013
0.011
0.008
0.0021
0.0052
0.0120
0.0250
0.0450
0.0700
0.1400
0.2200
0.3800
0.6000
1.0000
1.7500
2.5000
1.0000
1.7500
2.5000
Voltage
(VDC)
Current
(A)
63
63
63
63
63
63
32
32
32
32
32
32
32
24
24
24
50
50
50
50
50
50
50
50
45
45
50
50
50
45
45
45
* Measured at ≤10% of rated current and 25°C ambient temperature.
† Melting I2t at 0.001 sec clear time.
0.057
(1.45)
90
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
HF Halogen Free
RoHS Compliant, ELV Compliant
Surface Mount Fuses
Fast-Acting Chip Fuses
Figures FF1-FF6 — Family Performance Curves
Figure FF1
Figure FF2
0402SFF I²t vs. t Curves
2. 0
3 . 0A
4.0A
A
1.0
A
1.5
A
0402SFF Average Time Current Curves
1,000
10
4.0A
3.0A
2.0A
1.5A
100
1.0A
1
0.1
1
I²t (A²s)
Clear-Time (s)
10
0.1
0.01
0.01
0.001
0.001
0.0001
0.1
1
10
0.0001
0.0001
100
0.001
0.01
Current (A)
0.1
1
10
Time (s)
Note: Curves are nominal.
Figure FF3
Figure FF4
0603SFF Average Time Current Curves
0.5
A
0.7
5
1.0 A
A
1.5
2 . 0A
2. 5 A
3.0A
3 . 5A
4. A
5.00A
6 .0A
A
0603SFF I²t vs. t Curves
10000
10
6.0A
5.0A
4.0A
3.5A
3.0A
2.5A
2.0A
1.5A
1.0A
0.75A
1000
100
10
0.5A
I²t (A²s)
Clear-Time (s)
1
0.1
1
0.1
0.01
0.01
0.001
0.1
1
10
100
0.001
0.001
Current (A)
0.01
0.1
1
10
Time (s)
Note: Curves are nominal.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
91
Surface Mount Fuses
Fast-Acting Chip Fuses
Figures FF1-FF6 — Family Performance Curves
Figure FF5
(Cont’d)
Figure FF6
1206SFF Average Time Current Curves
0.5
A
0.7
5
1.0 A
A
1.5
1.7 A
2.05 A
2. 5 A
3.0A
4. A
5.00A
6 .0A
7.0 A
8 .0A
A
1206SFF I²t vs. t Curves
10000
10
8.0A
7.0A
6.0A
5.0A
4.0A
3.0A
2.5A
2.0A
1.75A
1.5A
1.0A
1000
1
100
0.5A
I²t (A²s)
Clear-Time (s)
0.75A
10
0.1
1
0.1
0.01
0.01
0.001
0.1
1
10
0.001
0.001
100
0.01
0.1
1
10
Time (s)
Current (A)
Note: Curves are nominal.
Notice:
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may
result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall
be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising
out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject
to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
92
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
HF Halogen Free
RoHS Compliant, ELV Compliant
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