Content last revised on October 24, 2025.
SA503679-04 | Fuji Electric IGBT Module
Product Overview
A Specialized Fuji Electric Power Module for AC Inverter Drive Applications
The SA503679-04 is a specialized IGBT module from Fuji Electric, engineered to function as a core power switching component in industrial AC inverter drives. While detailed specifications are proprietary, its designation points to a robust solution for controlling three-phase motors in various automation contexts. This module integrates a power semiconductor stage, designed to enhance system reliability and simplify the design of Variable Frequency Drive (VFD) power circuits. As an integrated module, it provides a more compact and thermally manageable alternative to discrete component designs. This module is specified as a power stage component for AC inverter drives, enabling precise and efficient motor control.
Application Scenarios & Value
System-Level Benefits in Industrial Motion Control
The primary application for the SA503679-04 is within the power conversion stage of Variable Frequency Drive (VFD) systems. Engineers designing or maintaining these systems face the challenge of ensuring reliable, long-term operation under demanding industrial conditions. An integrated power module like the SA503679-04 directly addresses this by consolidating multiple power components into a single, factory-tested package. This approach reduces the number of interconnects, minimizes stray inductance, and simplifies thermal management, which are critical factors for the durability of systems used in manufacturing, conveyor belts, and automated machinery.
By providing a dedicated solution for AC drive applications, this module allows designers to focus on system-level logic and control, confident in the performance of the core power stage. The result is a more robust and streamlined development process for sophisticated Motion Control systems that comply with industry standards such as IEC 61800-3. For systems with different power requirements or voltage ratings, other Fuji modules such as the 6MBI450U-120 may offer alternative performance characteristics.
Key Parameter Overview
Key Functional Specifications for System Integration
Full performance curves and detailed electrical specifications for the SA503679-04 are not publicly available and should be verified for your specific application. As a specialized component, its parameters are optimized for its intended use case. Below are the key identifiable characteristics based on available information.
- Manufacturer: Fuji Electric
- Product Category: IGBT Module
- Primary Application: AC Inverter Drives
- Package Type: DIP (Dual In-line Package) style module
The design of a power module is a critical aspect of its performance. For a deeper understanding of how different modules are structured and how they function, explore this comprehensive in-depth analysis of IGBT modules.
Download the SA503679-04 datasheet for detailed specifications and performance curves.
Frequently Asked Questions
Engineering and Sourcing Inquiries
What is the primary application environment for the SA503679-04?
Based on available information, the SA503679-04 is explicitly identified for use in AC Inverter Drives. This positions it as a component for industrial automation, motor control, and other power conversion systems that require efficient switching of high currents to manage motor speed and torque.
Is the SA503679-04 a complete Intelligent Power Module (IPM) with integrated gate drive and protection circuits?
The available information describes the SA503679-04 as an "IGBT Module." This typically implies it contains the IGBT and freewheeling diode power stage. It may not include the advanced integrated gate drive, protection logic (e.g., for over-current, over-temperature), and fault feedback found in a full IPM. External gate drive circuitry is likely required.
Without a public datasheet, how can I validate this module for a new design?
For new designs, validation would require obtaining the official specification sheet from a qualified source. This document is essential for performing thermal simulations, designing the gate drive circuit, and ensuring the module's voltage and current ratings meet the Safe Operating Area (SOA) requirements of the application. Direct contact with a distributor is the recommended path.
What information is needed to identify a potential alternative or replacement for the SA503679-04?
To determine a suitable replacement, an engineer would need the original system's key electrical requirements: the DC bus voltage (determines Vces), the nominal and peak load current (determines Ic), the switching frequency (impacts losses), and the mechanical footprint and pinout of the module. Without these, selecting a reliable alternative is not feasible.
Sourcing and System Reliability
Ensuring the authenticity and specification of power modules like the SA503679-04 is a critical step in building and maintaining reliable industrial systems. For specialized components where public data is limited, partnering with a knowledgeable distributor is key to accessing the necessary technical information to support design, verification, and procurement decisions. The longevity of high-capital equipment often depends on the quality and suitability of its core power electronics, a category where Fuji Electric has established a significant presence.
