1DI300ZP-120-05 Fuji Electric 1200V 300A Single IGBT Module

Content last revised on June 3, 2026

1DI300ZP-120-05 Fuji Electric 1200V 300A Single IGBT Module for High-Power Industrial Drives

The 1DI300ZP-120-05 from Fuji Electric is a single-element IGBT module delivering 1200V VCES and 300A rated collector current in the robust ZP package format. Designed for demanding power conversion stages, this module integrates a high-performance IGBT chip with an anti-parallel freewheeling diode, providing a complete switching cell for inverter leg construction.

1200V | 300A | Single IGBT + FWD | ZP Package

• Handles full-load thermal cycling in continuous-duty industrial drives.
• ZP package enables low-impedance thermal path to heatsink.

What makes the 1DI300ZP-120-05 relevant for high-power VFD designs? Its 300A continuous rating at 1200V provides sufficient blocking margin for 600V DC bus systems while delivering the current density needed to drive motors in the 150–200 kW range without paralleling modules. For 600V DC bus inverters demanding thermal headroom at full load, the 1DI300ZP-120-05 is the practical single-switch solution.

Application Scenarios & Value

Solving Thermal Challenges in Continuous-Duty Power Conversion

Engineers often face a critical trade-off when designing high-power three-phase inverters: achieving adequate current capacity while maintaining junction temperatures within safe limits during sustained operation. The 1DI300ZP-120-05 addresses this directly.

Consider a variable frequency drive (VFD) powering a 160 kW induction motor on a production line running 24/7. The DC bus sits at approximately 540–600V. Each IGBT in the inverter bridge must handle continuous currents exceeding 250A with periodic overloads during motor acceleration. The 300A rating of this module provides the necessary margin, while the 1200V blocking voltage accommodates transient spikes without approaching breakdown limits.

The ZP package format is significant here. Its large copper baseplate creates a low thermal resistance path from junction to case, meaning heat generated during conduction and switching transfers efficiently to the heatsink. This directly translates to lower steady-state junction temperatures, which is the single most important factor in IGBT long-term reliability.

Beyond motor drives, this module serves well in:

• UPS systems rated above 100 kVA requiring robust switching elements.
• Welding power supplies where high peak currents and thermal cycling demand rugged silicon.
• PWM inverter stages in renewable energy converters operating under IEC 61800 compliance.

For systems requiring a half-bridge configuration in a single package at this power level, the related 2MBI300N-120 offers dual 300A IGBTs. For applications needing additional current headroom, the 1MBI400N-120 provides 400A in a single-switch topology.

Technical Deep Dive

Thermal Performance and Reliability Under Sustained Load

The thermal path in the 1DI300ZP-120-05 deserves close attention. Think of thermal resistance (Rth) like a bottleneck in a pipe: the lower the value, the more efficiently heat flows from the chip to the cooling system. For a 300A module operating at typical VCE(sat) of approximately 2.7V, conduction losses alone reach 810W at full current. Every fraction of a degree in Rth(j-c) reduction directly determines whether the system can sustain rated output without derating.

The ZP package achieves this through its direct copper baseplate construction, eliminating intermediate thermal barriers found in smaller package formats. This is not a marginal improvement. In a properly designed cooling system, it can mean the difference between operating at Tj = 125°C versus Tj = 140°C under identical load conditions. That 15°C gap roughly doubles the expected power cycling lifetime according to established IGBT reliability models.

The integrated freewheeling diode handles reverse recovery during dead-time intervals in PWM switching. Its recovery characteristics influence EMI behavior and switching losses in the complementary IGBT. Proper gate drive design with appropriate negative gate voltage (typically -8V to -15V) ensures clean turn-off and prevents parasitic latch-up under high di/dt conditions. For detailed application guidance, refer to Fuji Electric's IGBT application notes.

Key Parameter Overview

Specifications Mapped to Thermal and Electrical Design Boundaries

Frequently Asked Questions

How does the ZP package thermal design of the 1DI300ZP-120-05 influence heatsink selection for continuous 300A operation?

The ZP package's direct copper baseplate provides a low Rth(j-c) path, meaning the heatsink can be sized more aggressively. For continuous 300A operation at typical switching frequencies (5–10 kHz), target a heatsink thermal resistance below 0.02 K/W to maintain Tj under 130°C. Forced-air or liquid cooling is standard practice at this power level.

Can the 1DI300ZP-120-05 be used in three-phase inverter bridges, and what considerations apply?

Yes. Six modules form a complete three-phase inverter bridge. Critical considerations include matched VCE(sat) across all six positions to ensure balanced loss distribution, synchronized gate drive timing with adequate dead-time (typically 2–4 μs), and a low-inductance DC bus design using laminated busbars to limit voltage overshoot during turn-off.

Ready to evaluate the 1DI300ZP-120-05 for your next high-power inverter design? Our technical team can support your procurement process with documentation, cross-reference data, and logistics coordination for volume requirements.