STMicroelectronics

STSID140-12 Isolated Thyristor Driver

STMicroelectronics high-efficiency, MCU-ready gate controls offer robust isolation for industrial AC switching

Image of STMicroelectronics STSID140-12 Isolated Thyristor Driver The STMicroelectronics STSID140-12 is a compact, surface-mount isolated gate driver engineered for robust and efficient control of SCRs, TRIACs, and AC switches in demanding industrial environments. Designed for direct MCU interfacing, it delivers strong isolation performance, low power consumption, and dependable triggering capability.

Features
  • 40 mA gate-drive capability: Strong sourcing/sinking output current supports a wide range of thyristors, ideal for AC motor control and inrush-current management
  • 1.25 kVRMS functional isolation: Ensures safe and reliable operation in high-voltage industrial systems, with creepage/clearance distances compliant with IEC 60335-1
  • Single 3.3 V supply: Directly compatible with modern microcontrollers, no level shifting or auxiliary supply required
  • Ultra-low standby current (5 µA): Minimizes power consumption in idle states, supporting energy-efficient designs
  • Robust EMC immunity: Qualified for ±4 kV EFT, ±4 kV surge, and ±2 kV ESD, ensuring reliable operation in noisy industrial environments
  • Compact DFN 5.35 mm x 3.45 mm package: Space-saving, halogen-free, and ECOPACK2-compliant for environmentally conscious designs
Applications
  • AC load switching
  • Inrush-current limiting for SMPS/UPS
  • Heating and resistive load control
  • Motor starters and industrial automation

STSID140-12 Isolated Thyristor Driver

ImageManufacturer Part NumberDescriptionTechnologyNumber of ChannelsVoltage - IsolationAvailable QuantityPriceView Details
New Product
SURFACE MOUNT ISOLATED THYRISTOR		STSID140-12SURFACE MOUNT ISOLATED THYRISTORMagnetic Coupling11250Vrms2987 - Immediate$11.31View Details
Published: 2026-01-23