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)
Part Number
Typical Electrical Characteristics Max Interrupt Ratings
Rated
Current
(A)
Nominal
Cold DCR
(Ω)*
Nominal
I
2
t
(A
2
sec)
†
Voltage
(V
DC
)
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
Part Number
Typical Electrical Characteristics Max Interrupt Ratings
Rated
Current
(A)
Nominal
Cold DCR
(Ω)*
Nominal
I
2
t
(A
2
sec)
†
Voltage
(V
DC
)
Current
(A)
0603SFF050F/32 0.50 0.485 0.0029 63 35
0603SFF075F/32 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
Typical Electrical Characteristics Max Interrupt Ratings
Rated
Current
(A)
Nominal
Cold DCR
(Ω)*
Nominal
I
2
t
(A
2
sec)
†
Voltage
(V
DC
)
Current
(A)
1206SFF050F/63 0.50 0.730 0.0021 63 50
1206SFF075F/63 0.75 0.513 0.0052 63 50
1206SFF100F/63 1.00 0.220 0.0120 63 50
1206SFF150F/63 1.50 0.120 0.0250 63 50
1206SFF175F/63 1.75 0.100 0.0450 63 50
1206SFF200F/63 2.00 0.050 0.0700 63 50
1206SFF250F/32 2.50 0.035 0.1400 32 50
1206SFF300F/32 3.00 0.031 0.2200 32 50
1206SFF400F/32 4.00 0.022 0.3800 32 45
1206SFF500F/32 5.00 0.015 0.6000 32 45
1206SFF600F/32 6.00 0.013 1.0000 32 50
1206SFF700F/32 7.00 0.011 1.7500 32 50
1206SFF800F/32 8.00 0.008 2.5000 32 50
1206SFF600F/24 6.00 0.013 1.0000 24 45
1206SFF700F/24 7.00 0.011 1.7500 24 45
1206SFF800F/24 8.00 0.008 2.5000 24 45
* Measured at ≤10% of rated current and 25°C ambient temperature.
† Melting I
2
t at 0.001 sec clear time.
Table FF2 — Typical Electrical Characteristics, Dimensions and Recommended
Pad Layout
0402 (1005mm) Fast-Acting Chip Fuses
0603 (1608mm) Fast-Acting Chip Fuses
1206 (3216mm) Fast-Acting Chip Fuses
0.063
(1.60)
0.039±0.004
(1.00±0.10)
0.020±0.004
(0.51±0.10)
0.010±0.004
(0.25±0.10)
0.020±0.004
(0.51±0.10)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
0.031±0.006
(0.80±0.15)
0.063±0.008
(1.60±0.20)
0.126±0.008
(3.20±0.20)
0.043±0.008
(1.10±0.20)
0.020±0.010
(0.51±0.25)
0.031±0.006
(0.80±0.15)
0.014±0.006
(0.36±0.15)
0.063±0.006
(1.60±0.15)
0.028
(0.70)
0.024
(0.60)
0.016
(0.40)
0.110
(2.80)
0.039
(1.00)
0.043
(1.09)
0.024
(0.60)
0.173
(4.40)
0.071
(1.80)
0.057
(1.45)
0.059
(1.50)
0.063
(1.60)
0.039±0.004
(1.00±0.10)
0.020±0.004
(0.51±0.10)
0.010±0.004
(0.25±0.10)
0.020±0.004
(0.51±0.10)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
0.031±0.006
(0.80±0.15)
0.063±0.008
(1.60±0.20)
0.126±0.008
(3.20±0.20)
0.043±0.008
(1.10±0.20)
0.020±0.010
(0.51±0.25)
0.031±0.006
(0.80±0.15)
0.014±0.006
(0.36±0.15)
0.063±0.006
(1.60±0.15)
0.028
(0.70)
0.024
(0.60)
0.016
(0.40)
0.110
(2.80)
0.039
(1.00)
0.043
(1.09)
0.024
(0.60)
0.173
(4.40)
0.071
(1.80)
0.057
(1.45)
0.059
(1.50)
0.063
(1.60)
0.039±0.004
(1.00±0.10)
0.020±0.004
(0.51±0.10)
0.010±0.004
(0.25±0.10)
0.020±0.004
(0.51±0.10)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
0.031±0.006
(0.80±0.15)
0.063±0.008
(1.60±0.20)
0.126±0.008
(3.20±0.20)
0.043±0.008
(1.10±0.20)
0.020±0.010
(0.51±0.25)
0.031±0.006
(0.80±0.15)
0.014±0.006
(0.36±0.15)
0.063±0.006
(1.60±0.15)
0.028
(0.70)
0.024
(0.60)
0.016
(0.40)
0.110
(2.80)
0.039
(1.00)
0.043
(1.09)
0.024
(0.60)
0.173
(4.40)
0.071
(1.80)
0.057
(1.45)
0.059
(1.50)
Surface Mount Fuses
Fast-Acting Chip Fuses
RoHS Compliant, ELV Compliant
HF
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
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