Surface mounted type fuse

30 Amperes SFK Series Self Control Protector(SCP)

Suitable for power systems and high power equipment.

  • Product name
    SFK-0630 / SFK-1230 / SFK-1830 / SFK-3030 / SFK-4030 / SFK-5030
  • Features
    • Achieving rated current 30 Amperes as a surface mounted fuses.
    • Applicable up to 17 cells in series.
    • Protects Li-ion batteries from overcharging (overvoltage) and overcurrent.
    • When overcharging occurs, the fuse element melts to shut off the circuit, and simultaneously the power to the heater is also cut off.
    • Placing a heater directly under the fuse element breaks the circuit quickly.


Product name SFK-0630 SFK-1230 SFK-1830 SFK-3030 SFK-4030 SFK-5030
Applicable cells in series 1 to 2 cells 3 cells 4 to 5 cells 6 to 9 cells 10 to 14 cells 15 to 17 cells
Rated current (A) 30
Rated voltage (VDC) * /
Rated breaking capacity (A)
80/80 (UL/TUV)
62/300 (UL)
Operating voltage (V) 4.0 to 9.6 8.4 to 19.1 10.5 to 23.5 20.2 to 46.3 28.0 to 62.0 39.6 to 72.0
Heater resistance (Ω) 0.8 to 1.2 3.2 to 5.2 4.8 to 8.0 18.8 to 31.2 40.0 to 60.0 72.4 to 120.6
Fuse resistance (mΩ) 1.3
Dimension (mm) 9.5 x 5.0 x 2.0
  • * Maximum voltage at which cutoff of the fuse is possible. It is not the operating voltage for the heater.
    UL certification: File No. E167588
    TUV certification: Certificate No. J9650637
    RoHS directive: Conforming
<Recommended land size>

These are recommended sizes and we can't guarantee the quality of product when mounted.
We recommend our customer to verify if our products could work with your design guidelines.

Suitable for Li-ion battery pack for DC/DC converters, cordless power tools, storage batteries, power-assisted bicycles, electric motorcycles, electric cars and other similar battery powered devices.


Note on the characteristic data given - Data on the characteristics of the products described in this page based on the results of evaluations carried out by the company. This does not guarantee that the characteristics of the product conform with your usage environment. Before use, review the usage conditions based on evaluation data obtained from the equipment and substrates actually used.