Content last revised on November 21, 2025
EVK71-060 | 600V 80A Thyristor/Diode Module for Reliable Power Control
The EVK71-060 is a robust 600V Thyristor/Diode module engineered for superior thermal performance and long-term reliability in industrial control systems. This Fuji Electric power module integrates a half-controlled single-phase bridge circuit, combining two thyristors and two diodes in a compact, isolated package. Key specifications include: 600V repetitive peak off-state voltage | 80A average on-state current | 2500V AC isolation voltage. The design delivers two primary engineering benefits: simplified thermal assembly and enhanced operational stability. It directly addresses the need for a reliable phase control solution by integrating a high-isolation voltage base, which streamlines heatsink mounting without requiring extra insulating hardware. Best suited for 240V AC line controlled rectifier and AC switching applications where simplified assembly and long-term reliability are paramount.
Key Parameter Overview
Decoding the Specs for Thermal and Electrical Integrity
The technical specifications of the EVK71-060 are tailored for demanding medium-power applications. The parameters below are grouped by function to facilitate engineering evaluation.
| Absolute Maximum Ratings (Tc=25°C unless otherwise specified) | |
|---|---|
| Parameter | Value |
| Repetitive Peak Reverse Voltage (VRRM) | 600V |
| Repetitive Peak Off-State Voltage (VDRM) | 600V |
| Average On-State Current (IT(AV)) | 80A |
| Surge On-State Current (ITSM) | 1600A (50Hz), 1700A (60Hz) |
| Critical Rate of Rise of On-State Current (di/dt) | 100 A/µs |
| I²t Limit (I²t) | 12800 A²s |
| Peak Gate Power (PGM) | 10W |
| Operating Junction Temperature (Tj) | -40 to +125°C |
| Isolation Voltage (Viso) | 2500V (AC, 1 minute) |
| Electrical and Thermal Characteristics | |
|---|---|
| Parameter | Value |
| Peak On-State Voltage (VTM) | 1.75V (Max) |
| Gate Trigger Voltage (VGT) | 3.0V (Max) |
| Gate Trigger Current (IGT) | 150mA (Max) |
| Thermal Resistance (Rth(j-c)) | 0.28 °C/W (Thyristor), 0.45 °C/W (Diode) |
| Mounting Torque (Main Terminal) | 2.5 - 3.5 N·m |
Application Scenarios & Value
System-Level Benefits in Industrial Motor Control and Power Conversion
The EVK71-060 is engineered to provide a robust and efficient power control core for a range of medium-power industrial systems. Its primary value lies in simplifying the overall system design while enhancing long-term operational integrity.
- DC Motor Drives: In applications such as conveyor belts, mixers, and small machine tools, this module can function as the main controlled rectifier, providing variable DC voltage to control motor speed and torque with high reliability.
- AC Voltage Controllers: For applications like industrial heating, soft starters for AC motors, and lighting control, the phase-control capability of the integrated thyristors allows for smooth power regulation, reducing mechanical stress and electrical inrush.
- Switched-Mode Power Supplies (SMPS): The module serves well in the input rectification stage of industrial power supplies and battery chargers, offering a rugged solution capable of handling line voltage fluctuations and surge currents.
A key engineering challenge in these applications is achieving effective thermal management in a compact space. The module's 2500V isolated baseplate is a significant advantage, allowing it to be mounted directly onto a grounded chassis or heatsink. This eliminates the need for separate, often fragile, insulating pads, which simplifies assembly, reduces component count, and creates a more efficient and reliable thermal path. For applications requiring lower current handling, the related EVG31-050 offers a 50A rating in a similar functional package.
Frequently Asked Questions (FAQ)
Engineering Queries on the EVK71-060
How does the 2500V isolation voltage of the EVK71-060's baseplate benefit my design?
The 2500V isolation allows direct mounting of the module to a heatsink without additional insulating materials. This simplifies the mechanical design, reduces assembly costs, and improves thermal performance by eliminating the thermal resistance of an external insulator. What is the main benefit of its isolated base? Simplified assembly and enhanced thermal transfer.
What is the primary advantage of using a module with glass passivated chips in an industrial application?
Glass passivation creates a hermetic seal around the semiconductor junctions, protecting them from moisture and contaminants. This results in significantly lower leakage currents and greater long-term stability of the device's blocking voltage characteristics, directly contributing to the overall reliability and lifespan of the end equipment.
Technical Deep Dive
Anatomy of Reliability: Isolated Base and Glass Passivation
The long-term reliability of the EVK71-060 is not an accident; it is a direct result of its core construction technologies. Two features, in particular, warrant closer examination: the isolated mounting base and the use of glass passivated chips.
The module's baseplate is not merely a piece of metal. It is bonded to an Alumina (Al₂O₃) ceramic substrate, a material chosen for its exceptional dielectric strength and good thermal conductivity. This creates a high-integrity, built-in insulator. The engineering benefit here is twofold. First, it provides the robust 2500V AC isolation. Second, it ensures a consistent, low-impedance thermal path from the semiconductor chips to the heatsink. This design is inherently more reliable than using a separate insulating pad, which can be susceptible to puncture during assembly or degradation over time, leading to catastrophic failure.
Internally, the thyristor and diode chips utilize glass passivation. This process involves depositing a precise layer of glass over the sensitive P-N junctions. This layer acts as a rugged, impermeable barrier, shielding the junctions from ionic contaminants and environmental humidity that can compromise performance. Over thousands of hours of operation, this protection prevents the gradual increase in leakage current and degradation of blocking voltage that can affect lesser-quality components. In essence, glass passivation is like an insurance policy for the semiconductor, ensuring its specified performance is maintained throughout its operational life, a critical factor in any industrial system where downtime is costly.
Technical Support and Sourcing
To evaluate the EVK71-060 for your next power control design, please contact our technical sales team for further information and sourcing inquiries. Our specialists are available to support your engineering teams in making informed component decisions based on your specific application requirements.