SURFACE-MOUNT FUSES
High-Current-Rated Chip Fuses
The monolithic multilayer design of the Littelfuse high-current-
rated chip fuses helps to provide some of the highest current
ratings available in the 1206 size and enhances high-temperature
performance in a wide range of circuit protection designs. The devices’
small size, high reliability and strong arc suppression characteristics
make them suitable for overcurrent protection of power supplies,
servers, communications equipment, voltage regulator modules,
and other high current, small size applications.
BENEFITS
• Glass ceramic monolithic structure provides stability
in application cycling
• High-current rating in a small package allows more
ecient use in system space
• Strong arc suppression in overcurrent conditions
FEATURES
• Lead-free materials and RoHS compliant
• Halogen free
(refers to: Br900ppm, Cl900ppm, Br+Cl1500ppm)
• Monolithic multilayer design
• High-temperature performance
• -55°C to +150°C operating temperature range
APPLICATIONS
• Communications equipment
• Voltage regulator modules
• Power supplies
• Servers
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2016 Littelfuse, Inc. 105
Table FH1 — Clear Time Characteristics
1206SFH Series
% of Rated Current Clear Time at 25°C
100% 4 hrs (min)
250% (10-20A) 5 s (max)
350% (25-30A) 5 s (max)
Table FH2 — Typical Electrical Characteristics, Dimensions and Recommended
Pad Layout
1206 (3216mm) High-Current-Rated Chip Fuses
Shape and
Dimensions
in (mm)
Recommended
Pad Layout
in (mm)
0.063±0.008
(1.60±0.20) 0.126±0.008
(3.20±0.20)
0.038±0.008
(0.97±0.20)
0.020±0.010
(0.51±0.25)
0.173
(4.40)
0.071
(1.80)
0.057
(1.45)
0.059
(1.50)
Figures FH1-FH2 — Family Performance Curves
Figure FH1 Figure FH2
Part Number
Typical
Electrical Characteristics
Max
Interrupt Ratings
Rated
Current
(A)
Nominal
Cold DCR
(Ω)*
Nominal
I2t
(A2sec)†
Voltage
(VDC)
Current
(A)
1206SFH100F/24 10 0.010 924 100
1206SFH120F/24 12 0.008 14 24 100
1206SFH150F/24 15 0.005 26 24 100
1206SFH200F/24 20 0.003 56 24 100
1206SFH250F/24 25 0.0016 187 24 250
1206SFH300F/24 30 0.0012 270 24 300
* Measured at ≤10% of rated current and 25°C ambient temperature.
† Melting I2t at 0.001 sec clear time.
10 10 0010 0
Clear Time (s)
10
1
0.1
0.01
0.001
Current (A)
1206SFH Average Time Current Curves
10A
12A
15A
20A
25A
30A
0.0010.01 0.1
11
0
10 000
10 00
10 0
10
1
I²t (A²s)
Time (s)
1206SFH I²t vs. t Curves
20A
15A
12A
10A
25A
30A
Note: Curves are nominal.
Surface Mount Fuses
Pulse Tolerant Chip Fuses
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
106
Surface Mount Fuses
Pulse Tolerant Chip Fuses
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.
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2016 Littelfuse, Inc. 107
