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Littelfuse LX5 0.5A Sensitive-Gate TRIAC

Littelfuse LX5 0.5A Sensitive-Gate TRIAC is a bidirectional solid-state switch series that offers a direct interface to microprocessor drivers in an SOT-23 package. It is designed for low-power AC switching applications like e-valve and AC solenoid drives. The die voltage blocking junctions of the Littelfuse LX5 are glass-passivated to ensure long-term reliability and parametric stability.

Features

  • RoHS-compliant and halogen-free
  • Surface mount packages
  • Static dv/dt up to 100V/µs
  • Blocking voltage (VDRM) capability up to 600V
  • Surge current capability up to 9.5A

Applications

  • Replacement of mechanical switch contacts to achieve an extended lifetime
  • Doorbells
  • Door locks
  • Electrovalves
  • Thermostats
  • AC solenoid drives

Specifications

  • Non-repetitive peak off-state voltage (VDSM/VRSM) of 700V (tp=50us, Tvj=25°C)
  • Repetitive peak off-state voltage (VDRM/VRRM) of 600V
  • RMS on-state current of 0.5A (IT(RMS)) (Tc=60°C)
  • Non-repetitive surge peak on-state current (ITSM) of 8A (f=50Hz)/9.5A (f=60Hz)
  • I2t value for fusing (I2t) of 0.32 A2s (tp=10ms)/0.41 A2s (tp=8.3ms)
  • Critical rate of rise of on-state current (di/dt) of 50A/µs (f=60Hz, Tvj=125°C)
  • Peak gate trigger current (IGTM) of 1A (tp=20µs, Tvj=125°C)
  • Average gate power dissipation (PG(AV)) of 0.1W (Tvj=125°C)
  • Storage temperature range (Tstg) of -50°C to 150°C
  • Virtual junction temperature range (Tvj) of -40°C to 125°C
  • DC gate trigger current (IGT) of 5mA (max.)(quadrant I-II-III) 9mA (max.)(quadrant IV)
  • DC gate trigger voltage (VGT) of 1.3V (max.) (quadrant I-II-III) 1.2V (typ.)(quadrant IV)
  • Gate non-trigger voltage (VGD) of 0.2V (min.)
  • Holding current (IH) of 5mA (max.)
  • Critical rate-of-rise of off-stage voltage (dv/dt(cr)) of 100V/µs (min.)
  • Critical rate-of-rise of commutating voltage (dv/dt(com)) of 5V/µs (min.)
  • Turn-on time (tgt) of 2.5µs (typ.)
Published: 2025-04-22 | Updated: 2025-04-25