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SanRex SG Series Thyristor Tab Terminal Modules

SanRex SG Series Thyristor Tab Terminal Modules are robust, single‑device SCR (silicon‑controlled rectifier) modules designed for reliable AC power control in industrial and home electronics applications. Built using an isolated molded, fast-on package, the SG series provides electrical isolation between the semiconductor element and the mounting surface, enhancing safety and simplifying thermal design. These SanRex SG modules employ high‑reliability glass‑passivated silicon technology, ensuring stable performance, long operating life, and resistance to environmental stress. Available in multiple current and voltage ratings, including 16A or 25A average on‑state current and 400V to 600V voltage classes, the SG series offers flexibility for a wide range of power control requirements.

The modules feature high surge-current capability, well-suited for applications subject to inrush currents, such as motor loads and resistive heating systems. Tab terminals for the anode, cathode, and gate allow fast, secure wiring and simplified assembly, reducing installation time and improving mechanical reliability.

With a 2500VRMS isolation voltage, a wide operating temperature range of -40°C to +125°C, and UL recognition, SanRex SG series thyristor modules are engineered for dependable operation in demanding environments. Typical applications include AC phase control, controlled rectification, motor control circuits, heater control systems, and general‑purpose power switching, where compact size, isolation, and durability are essential.

Features

  • Isolated molded thyristor construction
  • Highly reliable glass passivation technology
  • High average on‑state current capability
    • 16A IT(AV) for the SG16AA series
    • 5 A IT(AV) for the SG25AA series
  • High surge current capability
  • Tab terminals for easy wiring
  • 400V and 600V options available
  • High isolation breakdown voltage
  • Wide operating temperature range
  • Compact, screw‑mountable package
  • Certified under UL file E76102
  • RoHS-compliant

Applications

  • Industrial control equipment
  • Home/consumer power electronics
  • Heater controls
  • Vending machines

Specifications

  • Thyristor (SCR), isolated mold type
  • Average on‑state current, IT(AV)
    • 16A for SG16AA series
    • 25A for SG25AA series
  • RMS on‑state current, IT(RMS)
    • 25A for SG16AA series (single‑phase, half‑wave, 180° conduction, TC = +80°C)
    • 39A for SG25AA series (single‑phase, half‑wave, 180° conduction, TC = +70°C)
  • 400V and 600V repetitive peak reverse voltage options, VRRM
  • Surge on‑state current, ITSM
    • 220A (50Hz)/250A (60Hz) for SG16AA series, ½‑cycle, non‑repetitive
    • 450A (50Hz)/500A (60Hz) for SG25AA series, ½‑cycle, non‑repetitive
  • I2t rating (2ms to 10ms)
    • 260A2s for SG16AA series 
    • 1040A2s for SG25AA series
  • Peak on‑state voltage, VTM
    • 1.5V maximum for SG16AA series (IT = 50A, TJ = +25°C)
    • 1.4V maximum for SG25AA series (IT = 78A, TJ = +25°C)
  • 30mA typical holding current, IH
  • Gate characteristics
    • 40mA maximum gate trigger current, IGT
    • 3V maximum gate trigger voltage, VGT
    • 10W Peak gate power dissipation
  • Thermal and isolation
    • -40°C to +125°C operating junction temperature range
    • Maximum junction-to-case thermal resistance
      • 2.0°C/W for SG16AA series
      • 1.6°C/W for SG25AA series
    • 2500VRMS isolation voltage (AC, 1 minute)

Datasheets

Schematic

Schematic - SanRex SG Series Thyristor Tab Terminal Modules
Published: 2026-03-25 | Updated: 2026-04-01