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Three-Electrode Spark Gaps

Our three-electrode spark gaps are fire-on-command devices. These comprise hermetically sealed gas-filled switches and are available with DC hold-off voltages ranging from 5 to 50 kV. Three-electrode spark gap applications include medical lithotripsy, crowbar circuits, high di/dt switches for laser firing and high energy switches.

Product Type NumberGlass or CeramicDC or Hold off voltageDatasheetContact us
GXG150LCeramicRanging from 15 - 50 KvDatasheetContact us
GXG200LCeramicRanging from 15 - 50 KvDatasheetContact us
GXG200LRCeramicRanging from 15 - 50 KvDatasheetContact us
GXG250LCeramicRanging from 15 - 50 KvDatasheetContact us
GXG300LCeramicRanging from 15 - 50 KvDatasheetContact us
GXG350LCeramicRanging from 15 - 50 KvDatasheetContact us
GXTC300BRCeramicRanging from 15 - 50 KvDatasheetContact us
GXTC250BDCeramic25 KvDatasheetContact us

Please also have a look at our Trigger Transformers for Three-Electrode Spark Gaps.

GXG Series

The GXG Series of triggered three-electrode spark gaps are gas discharge tubes, hermetically sealed in a ceramic/metal envelope. Tubes with a DC hold-off voltage in the standard range 15 to 50 kV are available. Device breakdown voltage is signified by numerals (expressed in hundreds of volts) following the series type identifier: e.g. GXG350L has a 35 kV DC hold-off voltage capability. The operational voltage range for the GXG Series is 40% to 80% of DC hold-off voltage.

Typical Applications

  • Medical lithotripsy
  • Crowbar circuits
  • High di/dt switching
  • High voltage switches for laser firing
  • High energy switches

GX3500 Series

The GX3500 Series of triggered three-electrode spark gaps are gas discharge tubes, hermetically sealed in a ceramic/metal envelope for use in air. Tubes with a DC hold-off voltage in the standard range 15 to 50 kV are available. Device breakdown voltage is signified by numerals (expressed in hundreds of volts) following the series type identifier: e.g. GX3500-400 has a 40 kV DC hold-off voltage capability. The operational voltage range for the GX3500 Series is 40% to 80% of DC hold-off voltage.

Typical Applications

  • Crowbar circuits for high power travelling wave tubes, power klystrons and similar devices
  • High voltage switches for laser firing
  • General switching applications GXT Series

GXT/ GXTC Series

The GXT Series of triggered three-electrode spark gaps are gas discharge tubes, hermetically sealed in a ceramic/metal envelope. Tubes with a DC hold-off voltage in the standard range 5 to 38 kV are available.

Device breakdown voltage is signified by numerals (expressed in hundreds of volts) following the series type identifier: e.g. GXT250B has a 25 kV DC hold-off voltage capability. The operational voltage range for the GXT/ GXTC Series is 40% to 80% of DC hold-off voltage. For voltages above 10 Kv it is recommended that a GXT spark gap is immersed in insulating fluid or that a GXTC spark gap is used.

Typical Applications

  • Medical lithotripsy
  • Crowbar circuits
  • High di/dt switching
  • High voltage switches for laser firing
  • High energy switches
  • General switching applications