Fuji Electric Co., Ltd. manufacturers and markets a wide range of products, including information control systems, substations, factory automation system components, vending machines, and electronic devices including a full range of semiconductor products.

Products include:

• Power Management ICs, Sensor ICs, and Driver ICs (CMOS)
• MOSFET and Smart MOSFET
• IGBT (Modules and Discretes)
• IPM  (Intelligent Power Module)
• Bipolar Transistors (Modules and Discretes)
• Diodes:  Fast Recovery, Schottky, and High Voltage
• Surge Absorbers

DIODE

A diode is essentially a PN junction. The standard symbol is an arrow to indicate
the direction of hole current and a bar, as shown below. The arrow is at the anode,
which must be positive for current flow, while the bar is the cathode. Conventional
current is in the direction of the arrow for the flow of hole charges. Electron flow
is the opposite direction, against the arrow. The practical use of diodes is to serve
as a one-way valve.  Current can flow only when positive voltage at the anode with
respect to cathode, provides forward voltage. With the reverse polarity, no forward
current can flow. This feature is the basis for the general use of the diode as a rectifier
to change AC input to DC output.

ICBT: Insulated Gated Bipolar Transistor

The Insulated Gated Bipolar Transistor is a power semiconductor switching element, used in general-purpose inverters, uninterruptible power supplies, CNC machines and so on.

MOSFET: Metal-Oxide-Silicone Field Effect Transistor

A type of semiconductor switch (off-on) in which an oxide membrane is sandwiched between silicon and metal giving the name MOS.  By using a capacitor principle different from that of a bipolar transistor, when switching on and off, the open and close speed is better than that of any other power device. 

MOV: Metal Oxide Varsitor

Surge suppressors are available in many different packages and technologies. Today the most common used is the small electronic component called an MOV (Metal Oxide Varistor).  MOVs are widely used for voltage protection. The MOV is put in place to clamp transient voltages thus diverting a potentially high surge current from entering the main circuit causing component failure. This is done by applying the device across the circuit to be protected. MOV's are available in specified disk sizes giving them a rating based on energy and voltage clamping capability. The larger the clamping requirement, the larger the disk diameter.