LED Dimmer Triac/QUADRAC Thyristors

By Littelfuse Inc 133

LED Dimmer Triac/QUADRAC Thyristors

The Q6008LH1LED and Q6012LH1LED series of AlternistorTriac, and the Q6008LTH1LED and Q6012LTH1LED series of QUADRAC thyristor power control devices are designed for use as the switch in a dimmer circuit to adjust the light output of light emitting diode (LED) bulbs and strings. They allow designers of AC line-based dimmers for LED lighting to accommodate a wide range of operating parameters without sacrificing reliability, and without degrading the performance of the dimmer. As a result, a single control device can be used for LED-based dimmers or for combination dimmers designed for incandescent, compact fluorescent lamp (CFL), and LED loads.

LED Dimmer Triac/QUADRAC Thyristors
  •  Max holding current as low as 6 mA
  •  UL recognized TO-220AB package
  •  110°C rated junction temperature
  •  70 A/μs di/dt performance
  •  QUADRAC version includes integrated DIAC

  • Full control of light output at the extreme low end of load conditions
  • 2500 VAC min isolation between mounting tab and active terminals
  • Improves margin of safe operation with less heat sinking required
  • Provides enhanced immunity from electrical noise
  • Enables survivability of typical LED load-operating characteristics
  • Simplicity of circuit design and layout
  • 600 V blocking capability