1DI300ZN-120-02 Fuji Electric 1200V 300A Single IGBT Module

Content last revised on May 23, 2026

1DI300ZN-120-02 Fuji Electric 1200V 300A Single IGBT Module for High-Current Industrial Switching

How do you ensure thermal stability when pushing 300A through a single IGBT element in a demanding industrial inverter? The 1DI300ZN-120-02 from Fuji Electric answers this with a robust ZN package optimized for heat extraction at scale. Core specs: VCES 1200V | IC 300A | Tj(max) 150°C. Key benefits: proven thermal path for sustained high-current operation; single-element flexibility for custom inverter topologies. For three-phase inverter designs requiring reliable 300A switching at 1200V bus voltage, the 1DI300ZN-120-02 delivers the thermal headroom that keeps junction temperatures predictable under continuous load.

Frequently Asked Questions

Addressing Critical Design Queries for the 1DI300ZN-120-02

What makes the ZN package relevant for thermal management at 300A continuous current?
The ZN package provides a large copper baseplate area that creates a low-impedance thermal path from the IGBT chip to the heatsink. At 300A rated current, conduction losses alone can exceed 800W. The package geometry ensures that heat spreads efficiently, reducing the thermal gradient between junction and case. This directly influences heatsink sizing and cooling system cost.

Can the 1DI300ZN-120-02 be used in half-bridge configurations?
Yes. As a single IGBT with integrated freewheeling diode, two 1DI300ZN-120-02 modules can form one phase leg of a three-phase inverter. This single-element approach gives designers full control over bus bar layout and stray inductance management, which becomes critical above 200A switching currents.

What bus voltage range is appropriate for a 1200V-rated IGBT module?
A 1200V VCES rating supports DC bus voltages up to approximately 800V with adequate margin for voltage overshoot during turn-off transients. This makes the module well-suited for 380–480V AC line-fed drives, where the rectified bus typically sits between 540V and 680V.

Key Parameter Overview

Decoding the Thermal and Electrical Boundaries

What is the primary advantage of the ZN package at 300A? It minimizes thermal resistance between junction and heatsink, enabling sustained full-load operation without forced derating.

Technical Deep Dive

Managing Heat Flow in a 300A Single-Element IGBT

At 300A and a VCE(sat) of approximately 2.7V, the 1DI300ZN-120-02 dissipates roughly 810W in conduction losses alone during continuous DC operation. Add switching losses at typical PWM frequencies of 4–8 kHz, and total dissipation can approach 1.2–1.5 kW per device. Think of the thermal path like a highway: the ZN package baseplate acts as a wide, multi-lane road that prevents bottlenecks between the chip and the heatsink surface.

This thermal architecture means the difference between operating at Tj = 125°C with margin, or hitting the 150°C ceiling and triggering protective shutdown. For engineers designing forced-air or liquid-cooled systems, the baseplate flatness and mounting surface area of the ZN package directly determine how much of the heatsink's capacity is actually utilized. Understanding thermal resistance impacts on IGBT system design is essential when specifying cooling for modules in this power class.

A second analogy applies to switching losses: each turn-on and turn-off event is like a brief surge of friction heat. At higher carrier frequencies, these surges accumulate faster. The 1200V rating provides voltage headroom, but the real design constraint is keeping the cumulative thermal load within the package's steady-state dissipation capability.

Application Scenarios & Value

Solving Real-World Thermal Challenges in Industrial Motor Drives

Consider a 160kW variable frequency drive (VFD) powering a large centrifugal compressor in a petrochemical facility. The motor draws near-rated current continuously, with periodic overload transients during process upsets. The design engineer faces a specific challenge: maintaining junction temperature below 130°C during sustained 280A operation at 6 kHz PWM, while ambient temperatures inside the cabinet reach 50°C.

The Fuji Electric 1DI300ZN-120-02 addresses this by providing the full 300A rating with thermal margin. Six modules form a complete three-phase inverter, each handling one switching position. The single-element configuration allows optimized bus bar routing that minimizes stray inductance, reducing voltage overshoot and associated snubber losses. This topology flexibility is a decisive advantage in custom drive platforms designed for high-power industrial applications.

For systems requiring dual-IGBT integration in a single package to reduce component count, the 2MBI300N-120 offers a half-bridge configuration at the same voltage and current class. For applications demanding higher current headroom, the 1MBI400N-120 provides 400A capability within Fuji Electric's product family.

The 1DI300ZN-120-02 also finds use in UPS systems, welding inverters, and renewable energy converters where the combination of 1200V blocking capability and high continuous current supports reliable power conversion across IEC 61800-compliant drive architectures. Refer to Fuji Electric's IGBT application documentation for detailed loss calculation methodologies applicable to this module class.

As power density requirements in industrial cabinets continue to tighten, the ability to extract heat efficiently from a single 300A switching element becomes a strategic differentiator in drive platform design. The 1DI300ZN-120-02 represents Fuji Electric's approach to this challenge: a proven silicon platform in a thermally optimized package that gives system designers the margins they need for long-term field reliability.