Fuji Electric 2RI100E-080 Power Diode Rectifier Module

This device is an industrial Fuji Electric 2RI100E-080 power diode module.

Manufactured in Japan, this high-capacity solid-state semiconductor component contains two series-connected rectifier diodes configured as a half-bridge branch. It is engineered for industrial power electronics applications, working within automation parts ensembles, heavy protective circuits, and control panels to handle high-power AC-to-DC rectification cycles with low thermal losses.

Key Features

Dual-Diode Series Configuration: Internally integrated with two high-current silicon rectifier diodes wired in a half-bridge (series) matrix. This dual-element layout allows a pair of these modules to be coupled together to build a complete, highly compact single-phase full-wave bridge rectifier block.
Heavy-Duty Bolt-On Power Terminals: Designed with three robust, top-facing machined metallic terminal tabs (labeled 1, 2, and 3 corresponding to circuit nodes) equipped with deep internal threads. These solid connection blocks ensure gas-tight, low-resistance wiring interfaces that tolerate continuous high thermal expansion cycles without stripping.
Electrically Isolated Copper Baseplate: Constructed with the internal semiconductor dies pre-bonded to an isolated ceramic layer backed by a thick copper baseplate. This allows technicians to bolt the module directly onto a common aluminum heatsink chassis alongside other components without causing a short circuit.
Molded Flame-Retardant Shell Casing: Enclosed in a premium, high-impact industrial polymer housing block. The structural frame isolates high-voltage paths from external tools, and features a printed front-facing schematic label for quick wiring verification during field assembly.
High Surge Current Capacity: Specially designed to handle high intermittent forward surge currents ( $I_{FSM}$ ), allowing the module to withstand sudden downstream inductive motor start-up rushes or short-term line faults without punch-through failure.

Technical Specifications

Feature	Specification Details
Brand / Manufacturer	Fuji Electric Co., Ltd.
Part / Catalog Number	2RI100E-080
Manufacturing Batch Code	9403
Device Classification	Power Diode Rectifier Module / Semiconductor
Average Forward Current ( $I_F$ )	100 Amps continuous duty load
Repetitive Peak Reverse Voltage ( $V_{RRM}$ )	800 Volts maximum isolation threshold
Internal Configuration Matrix	2 Diodes in Series Connection (Half-Bridge Network)
Terminal Node Designation	Node 1: AC Input ( $\sim$ ), Node 2: DC Positive (+), Node 3: DC Negative (-)
Manufacturing Origin	Made in Japan
Mounting Hardware Layout	Dual-end side clearance holes for secure chassis bolting

Applications

Industrial AC to DC Converters: Configured inside three-phase and single-phase diode bridge rectifiers to supply heavy-duty DC current to manufacturing systems.
Variable Frequency Drives (VFDs): Acts as the primary front-end rectifier module inside commercial VFDs, converting incoming AC line utility power into stable DC bus voltage for inverter circuits.
DC Motor Control Drives: Integrated into large motor speed controllers to deliver smooth, high-amperage direct current to heavy-duty industrial DC conveyor and crane motors.
High-Power Welding Power Supplies: Utilized in commercial electric arc welding stations to rectify raw high-frequency AC power into steady DC current arcs for clean weld profiles.
Uninterruptible Power Supplies (UPS): Installed inside large utility-scale backup battery chargers to manage steady mains rectification during standby battery charging sequences.