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SCR

Silicon-controlled rectifier (SCR) thyristors
Littelfuse silicon-controlled rectifiers (SCR) and SCR modules for efficient switching offer a broad range of silicon-controlled rectifier solutions designed for precise, efficient switching in low-current circuits. Our SCR devices activate with minimal gate current and feature fast turn-off capabilities, reducing the risk of commutation failure. Common applications include strobe lights, fluid level sensors, and capacitive-discharge ignition systems. We also manufacture SCR modules and discrete SCRs optimized for solenoids in ground fault circuit interrupters (GFCIs) and other demanding electronic controls.
  • Blocking voltage ratings of 200 V dc to 600 V dc
  • Available with surge capabilities of 15 A, 25 A, and 30 A
  • Available with ampere ratings of 1 A, 1.5 A, and 2 A
  • Turnoff times below 55 µs
  • RoHS compliant
  • Available in surface mount and axial pass thru configurations
  • Glass passivated junctions ensure durability
  • Sensitive gates allow for direct interfacing with microprocessors
  • Compatible with lead-free reflow soldering processes

SCR Parts

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SCR Applications

white AFCI-GFCI-RCD_outlets-breakers
AFCI/GFCI/RCD Outlets & Breakers

GFCI outlets, AFCI outlets, and RCD breakers keep the lights on. This block diagram shows Littelfuse components that help the required safety

Smoke detector with smoke
Smoke & Heat Detectors

Wired smoke detectors and heat alarms require dependable ac power supplies, highly efficient dc–dc converters, and accurate temperature sensors.

cell phone plugged into white outlet
Intelligent Outlets

Intelligent outlets let building managers and homeowners control energy use and costs via smartphones, tablets, or voice assistants. A block

SCR Resources