MITSUBISHI TM90DZ-H IGBT Module

Mitsubishi TM90DZ-H Thyristor Module | Robust 800V/90A Dual SCR for Power Control

Product Overview

The Mitsubishi TM90DZ-H is a high-reliability dual thyristor (SCR) module designed for demanding industrial power control applications. Encapsulating two thyristors in a single, electrically isolated package, this 800V, 90A module provides a streamlined solution for controlling AC power and building efficient controlled rectifiers. The TM90DZ-H excels in applications such as motor soft starters, industrial heating controls, and DC motor drives, where its ruggedness and simplified integration deliver significant value by enhancing system reliability and reducing assembly complexity.

Core Product Features In-Depth Analysis

• High Integration Dual Thyristor Design
  • Technical Principle: The TM90DZ-H integrates two electrically independent thyristors into a standard industrial module with an isolated metal baseplate. This design ensures excellent thermal transfer to a heatsink while maintaining high electrical isolation between the power circuit and the mounting surface. This monolithic approach minimizes internal connections and stray inductance compared to using two discrete SCR components.
  • Application Value: For engineers designing power control circuits, this integration drastically simplifies mechanical assembly and PCB layout. It reduces component count, minimizes wiring, and creates a more compact and thermally efficient system. The result is lower assembly costs, faster time-to-market, and improved long-term reliability for power conversion systems.
• Exceptional Surge Current Capability & Robustness
  • Technical Principle: Featuring a non-repetitive surge current (ITSM) rating of 1500A, the Mitsubishi TM90DZ-H is engineered to withstand significant inrush currents and fault conditions. This is achieved through Mitsubishi's optimized chip design and glass-passivated junctions, which ensure stable performance and prevent degradation under high electrical and thermal stress.
  • Application Value: This high surge immunity is critical in applications like motor soft starters, where the initial current can be many times the nominal rating. For welding equipment or capacitor charging circuits, this feature prevents catastrophic failure during peak load events. This inherent robustness translates directly to longer equipment life, reduced downtime, and lower maintenance costs for your customers.

Typical Application Scenarios & Value Proposition

• Controlled Rectifiers for DC Motor Drives: In single-phase controlled bridge rectifier circuits, the dual configuration of the TM90DZ-H is ideal. It allows for precise phase-angle control, enabling smooth speed and torque regulation for DC motors in industrial automation, improving process control and efficiency.
• AC Voltage Controllers & Soft Starters: The primary challenge in starting large AC motors is the high inrush current, which strains both the motor and the power grid. By using the TM90DZ-H in a soft starter circuit, you can gradually ramp up the voltage, providing a smooth start that reduces mechanical shock and electrical stress. Its robust design ensures it can handle this demanding task repeatedly.
• Industrial Heating & Lighting Control: For applications requiring precise power regulation, such as industrial furnaces or large-scale architectural lighting, the Mitsubishi TM90DZ-H delivers reliable and efficient power modulation. Its isolated package simplifies safety compliance and thermal management in these high-power systems.
• Static Switches (AC-SSR): This module serves as the core component for building high-power solid-state relays. Compared to mechanical contactors, a TM90DZ-H-based static switch offers arc-free operation, silent switching, and a significantly longer operational lifespan, making it perfect for applications with frequent switching cycles.

Key Technical Parameters at a Glance

For complete technical specifications, please download the datasheet: TM90DZ-H Datasheet

Product Comparison & Selection Advice

When selecting a power control device, engineers often compare modules like the Mitsubishi TM90DZ-H against using two discrete thyristors. While discrete components may offer flexibility in layout for unique form factors, the TM90DZ-H module provides superior thermal performance, guaranteed isolation, and dramatically reduced assembly time, making it the preferred choice for new designs focused on reliability and manufacturing efficiency.

It's also important to distinguish its use case from that of an IGBT. For controlling AC power directly from the line (line-commutated applications) like simple rectifiers and AC controllers, a thyristor module like the TM90DZ-H is the most rugged and cost-effective solution. For high-frequency DC switching applications like inverters or switch-mode power supplies, a self-commutated device such as those found in our IGBT module portfolio would be required. For further selection guidance or to request a quote, please contact us for technical support.