High Current
UL,cUL approved
Complete lead-free

Type JAJ microfuse is designed for the safety needs of equipment that uses motors and lithium-ion batteries. By using a frame material for the fuse element,It is compact and has a high current rating.By making it completely lead-free, it is designed to be environmentally friendly.


Type Type JAJ
Category Temperature Range -40~+125℃
Rated Current 12.5-16A
Rated Voltage 60VDC
Voltage Drop 99mV max
Insulation Resistance 1MΩ or more
Fusing Characteristics Fusing within 1 minutes if the current is 200% of rated current.
Clearing Characteristics Breaking voltage:60V
Breaking current:100A


  • Rated current of 16A, rated voltage of 60VDC, and rated breaking current of 100A achieved in spite of its compact size of 3.2x1.6x1.4mm by our original structure.
  • Fast-acting type fuse with little variation in fusing characteristics.
  • Performance against rush current is excellent since plate material is used for fuse element.
  • Surface temperature rise is 75°C or less when applying rated current for fusing. This gives less influence to the peripheral units.
  • Resistance to soldering heat: Reflow or flow soldering 10 seconds at 260 °C.
  • Our original terminal construction makes almost no occurrence of Tombstone phenomenon.
  • Suitable for automatic mounting
  • Precise dimensions allows high-density mounting and symmetrical construction of terminals provide “Self-Alignment”.
  • Complete lead-free, bromine-free.

Application classification

The application classification by use which divided the market and use into four is set up supposing our products being used for a broad use.

Please confirm the application classification by use of each product that you intend to use.

Moreover, please be sure to inform to our Sales Department in advance in examination of the use of those other than the indicated use.

Market Application classification by use Use Recommendation Type
Outline Typical example of application Circuit Protection Components
High reliability apparatus 1

-Apparatus in which advanced safety and reliability are demanded.

- Whether failure of the apparatus which cannot maintenance exchange products, and a product is direct for a human life, apparatus which changes or may cause a fatal system failure.

- Space development apparatus relation (Satellite, Rocket, Artificial Satellite)

- Aviation and a defensive system

- Atomic power, fire power, and a water-power generation system

With no relevance



Industrial apparatus


- Apparatus in which reliability is important.

- The apparatus in which maintenance exchange of a product is very difficult, and failure of a product influence a human life, or the range of failure is wide range.

- Vehicles control of transport machines, such as a car, and a railroad, a vessel (Engine control, drive control, brake control)

- The operation control system of the Shinkansen and a main artery

Type JAG N series
Type JAJ N series
Type JAK N series
Type JHC N series
Type KAB N series
Type KVA N series
3 -Apparatus which can maintenance exchange products, and apparatus in which the loss of the system failure is large although failure of a product does not influence a human life, and maintenance engineering is demanded

- Vehicle indoor loading parts, such as an air-conditioner and car navigation, and in-vehicle communication facility

- Security management system for home/buildings etc.

- Control apparatus, such as Industrial use robots and a machine tool etc.

Type KAB M series
Apparatus in general 4

- The small size and the thin article which applies leading-edge technology positively

- The product supposing being used widely in the market for the apparatus which can maintenance exchange products, and apparatus with a partial system failure by failure of product.

-Smart phone, Mobile phone, Mobile PC (tablet), Electronic dictionary

- Desktop PC, Notebook PC, Home network

- Amusement apparatus (Pachinko,Game machine)

Type JAE, Type JAG
Type JAJ, Type JAK
Type JHC,
Type KAB
Type KAB T series
Type KVA

Detailed information

Inquiries concerning products and technologies are here