LED Dimmer Triac/QUADRAC Thyristors

Littelfuse offers robust switching performance for AC line-based LED dimmer applications

Image of Littelfuse's LED Dimmer Triac/QUADRAC ThyristorsThe 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.

Features SMD Inductors At-A-Glance
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

LED Dimmer TriacQUADRAC Thyristors

ImageManufacturer Part NumberDescriptionTriac TypeVoltage - Off StateAvailable Quantity
Q6008LH1LED datasheet linkTRIAC ALTERNISTOR 600V 8A TO220Q6008LH1LEDTRIAC ALTERNISTOR 600V 8A TO220Alternistor - Snubberless600V0Q6008LH1LED product page link
Q6012LH1LED datasheet linkTRIAC ALTERNISTOR 600V 12A TO220Q6012LH1LEDTRIAC ALTERNISTOR 600V 12A TO220Alternistor - Snubberless600V0Q6012LH1LED product page link
Q6008LTH1LED datasheet linkTRIAC INT TRIGGER 600V 8A TO220Q6008LTH1LEDTRIAC INT TRIGGER 600V 8A TO220Internally Triggered600V0Q6008LTH1LED product page link
Q6012LTH1LED datasheet linkTRIAC INT TRIGGER 600V 12A TO220Q6012LTH1LEDTRIAC INT TRIGGER 600V 12A TO220Internally Triggered600V0Q6012LTH1LED product page link
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Published: 2013-08-29