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SCR

Silicon-controlled rectifier (SCR) thyristors
Silicon-controlled rectifier (SCR) thyristors offer efficient switching solutions for low-current circuits. Gates on the solid state switches open with just a few milliamperes of current. The devices also turn off quickly, making them resistant to commutation failures. Typical applications for SCR thyristors include fluid level sensors and strobe lights. Littelfuse also makes SCR thyristors specifically for use in capacitive-discharge ignition systems and for use with solenoids for ground-fault circuit interrupters (GFCIs).
  • 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