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SIDAC

SiDACTor® Protection Thyristors
SIDACs
SIDACs, or more properly, silicon diodes for alternating current, primarily serve as pulse current ignition switches in metal halide lamps and xenon lights. The ac switches operate in a normally on manner, allowing low-voltage current to flow continuously. As a SIDAC heats during each cycle, the power thyristor generates a pulse that keeps gas in the lamp or bulb burning.
  • Triggering voltages of 190 V ac to 380 V ac
  • Low on-state voltages of 1 V ac to 15 V ac
  • Typical on-state current of 1 A
  • Glass passivated junctions
  • RoHS compliant
  • Available in surface mount and axial leaded configurations
  • Available with unidirectional or bidirectional performance
  • Produce multiple pulses in each half cycle at 50–60 Hz
  • Blocking capability ensured by glass passivated junctions
  • Also used in high-voltage power supplies and natural gas igniters

SIDAC Parts

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