SURFACE-MOUNT FUSES Slow-Blow Chip Fuses Available in industry standard 1206 and 0603 chip sizes, Littelfuse slow-blow chip fuses help provide overcurrent protection on systems that experience large and frequent current surges as part of their normal operation. The slow-blow chip fuse’s monolithic, multilayer design helps provide some of the highest current ratings available in the 1206 and 0603 footprints 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, capacitor filter banks, Liquid Crystal Display (LCD) backlight inverters, electric motors and portable electronics. BENEFITS APPLICATIONS • Time-delayed design prevents nuisance openings in • Small motors systems pulsed and high inrush current applications • Portable electronics • Small size with high-current ratings • Input power ports • Strong arc suppression characteristics • Power over Ethernet (PoE) • Test equipment FEATURES • POL converter protection • Lead-free materials and RoHS compliant • Computer drives • Halogen free • Displays (refers to: Br≥900ppm, Cl≥900ppm, Br+Cl≥1500ppm) • Printers • Monolithic multilayer design • High-temperature performance • -55°C to +125°C operating temperature range 102 Specifications subject to change without notice. ©2018 Littelfuse, Inc. HF Halogen Free RoHS Compliant, ELV Compliant

SuShrafpae acnde Mount Fuses 0.063±0.008 Dimensions (1.60±0.20) Slion (mwm)-Blow Chip Fuses0(3.1.2260±±00..02008) Table FS1 — Clear Time Characteristics 0.038±0.008 (0.97±0.20) 0603SFS Series 1206SFS Series % of Rated Current Clear Time at 25°C % of Rated Current Clear Time at 25°C 0.020±0.010 100% (0 . 5 1 ± 40. 2h5r)s (min) — 100% 4 hrs (min) — 200% 1 s (min) 120 s (max) 200% 1 s (min) 120 s (max) Recommended 0.173 Pad Layo3u0t0% (4. 4 0 ) 0.1 s (min) 3 s (max) 300% 0.1 s (min) 3 s (max) in (mm) 0.059 800% (1.0A-1.5A) (1.050.)0005 s (min) 0.05 s (max) 800% (1.0A-1.5A) 0.0016 s (min) 0.05 s (max) 800% (2.0A-5.0A) 0.001 s (min) 0.05 s (max) 800% (2.0A-8.0A) 0.002 s (min) 0.05 s (max) 0.071 (1.80) Table FS2 — Typical Electrical Characteristics, Dimensions and Recommended 0.057 (1.45) Pad Layout Typical Max Electrical Characteristics Interrupt Ratings 0603 (1608 mm) Slow-Blow Chip Fuses Rated Nominal Nominal Current Cold DCR (A) (Ω)* I2t Current Shape and 0.031±0.006 Voltage Dimensions (0.80±0.15) 0(.10.6603±±00..1050)6 Part Number (A2sec)† (V ) (A) in (mm) DC 0603SFS100F/32 1.0 0.200 0.093 32 50 0(.00.3810±±00..0150)6 0603SFS150F/32 1.5 0.100 0.18 32 50 0603SFS200F/32 2.0 0.052 0.32 32 50 0.014±0.006 (0.36±0.15) 0603SFS250F/32 2.5 0.041 0.63 32 50 Recommended 0.110 0603SFS300F/32 3.0 0.031 0.87 32 50 Pad Layout (2.80) 0603SFS350F/32 3.5 0.021 1.20 32 50 in (mm) 0.024 (0.60) 0603SFS400F/32 4.0 0.017 2.30 32 50 0.039 (1.00) 0603SFS450F/32 4.5 0.015 2.70 32 50 0.043 0603SFS500F/32 5.0 0.013 3.20 32 50 (1.09) PSR-27781 6.0 0.010 4.00 32 80 PSR-27893 7.0 0.008 5.00 32 80 1206 (3216 mm) Slow-Blow Chip Fuses PSR-28024 8.0 0.006 7.00 32 80 Shape and 0.063±0.008 Typical Max Dimensions (1.60±0.20) in (mm) 0(3.1.2260±±00..02008) Electrical Characteristics Interrupt Ratings Rated Nominal Nominal Current Cold DCR (A) (Ω)* I2t Current 0.038±0.008 Voltage (0.97±0.20) Part Number (A2sec)† (V ) (A) DC 1206SFS100F/63 1.0 0.360 0.11 63 50 0.020±0.010 1206SFS125F/63 1.25 0.200 0.22 63 50 (0.51±0.25) 1206SFS150F/63 1.5 0.150 0.23 63 50 Recommended 0.173 Pad Layout (4.40) 1206SFS200F/63 2.0 0.088 0.63 63 50 in (mm) 0.059 (1.50) 1206SFS250F/32 2.5 0.065 0.90 32 50 0.071 1206SFS300F/32 3.0 0.034 1.20 32 50 (1.80) 1206SFS350F/32 3.5 0.028 1.60 32 50 0.057 (1.45) 1206SFS400F/32 4.0 0.024 2.20 32 50 1206SFS450F/32 4.5 0.020 3.60 32 50 1206SFS500F/32 5.0 0.016 5.30 32 50 1206SFS550F/24 5.5 0.014 6.40 24 50 1206SFS600F/24 6.0 0.011 8.50 24 60 Shape and 0.031±0.006 Dimensions (0.80±0.15) 0(.10.6603±±00..1050)6 1206SFS700F/24 7.0 0.010 10.00 24 60 in (mm) 1206SFS800F/24 8.0 0.009 16.90 24 60 0.031±0.006 * Measured at ≤10% of rated current and 25°C ambient temperature. (0.80±0.15) † Melting I2t at 0.001 sec clear time. 0.014±0.006 (0.36±0.15) RReocHoSm Cmoemnpdeliadnt, ELV Compliant0.110 HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc. Pad Layout (2.80) in (mm) 0.024 (0.60) 0.039 (1.00) 0.043 (1.09)

Surface Mount Fuses Slow-Blow Chip Fuses Figures FS1-FS6 — Family Performance Curves Figure FS1 0603SFS Average Time Current Curves 1.0A 1.5A 2.0A 2.5A3.0A 3.5A4.0A 4.5A5.0A 100 10 1 e (s) m ar Ti e Cl 0.1 0.01 0.001 1 10 100 Current (A) Figure FS2 0603SFS Family I2T vs. Clear Time 0603SFS I²t vs. t Curves 10,000 10,000 5.0A 4.5A 5.0A 4.0A 4.5A 3.5A 4.0A 3.0A 3.5A 2.5A 3.0A 1000 2.0A 2.5A 1000 1.5A 2.0A 1.0A 1.5A 1.0A 100 100 ec) 22It (AS 22It (As)10 10 1 1 0.1 0.1 0.01 0.00000.011 0.0001 0.001 0.01 0.1 1 10 100 0.001 0.01 0.1 1 10 100 Time (Sec) Time (s) Note: Curves are nominal. 104 Specifications subject to change without notice. ©2018 Littelfuse, Inc. HF Halogen Free RoHS Compliant, ELV Compliant

Surface Mount Fuses Slow-Blow Chip Fuses Figures FS1-FS6 — Family Performance Curves (Cont’d) Figure FS3 1206SFS Average Time Current Curves 1.0A 1.25A1.5A 2.0A 2.5A3.0A3.5A4.0A4.5A5.0A5.5A6.0A7.0A8.0A 100 10 1 e (s) m ar Ti e Cl 0.1 0.01 0.001 1 10 100 1000 Current (A) Figure FS4 1206SFS I²t vs. t Curves 100000 8.0A 7.0A 6.0A 5.5A 10000 45..05AA 4.0A 3.5A 3.0A 2.5A 1000 2.0A 1.5A 1.25A 1.0A 100 2As) 2It ( 10 1 0.1 0.01 0.001 0.01 0.1 1 10 100 Time (s) Note: Curves are nominal.  Please go to page 108 for more information about Slow-Blow Chip Fuses. RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.

Surface Mount Fuses Slow-Blow Chip Fuses Figures FS1-FS6 — Family Performance Curves (Cont’d) Figure FS5 0603SFS PSR part Average Time Current Curves e (s) m ear Ti Cl Current (A) Figure FS6 0603SFS PSR part I2t vs. t Curve e (s) m ear Ti Cl Note: Curves are nominal. Current (A) 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. 106 Specifications subject to change without notice. ©2018 Littelfuse, Inc. HF Halogen Free RoHS Compliant, ELV Compliant