2 & 3-Electrode Gas Discharge Tubes

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Gas Discharge Tubes (GDTs) are used to protect personnel and sensitive equipment from hazardous transient voltages. Bourns® GDTs are used in primary and secondary applications and can withstand multiple applications of high surge current energy in excess of 25 KA. Bourns offers standard 8 mm GDTs and a 5 mm mini series GDT in two and three electrode versions featuring long service life and low capacitance and insertion loss. An optional, proprietary Switch-Grade Fail-Short is offered on the three electrode version to provide superior protection from thermal runaway.   


  • RoHS compliant
  • Wide range of voltages available (75 V to 7200 V)
  • Wide range of sizes available
  • Patented hybrid technology designs (MSP® GDT)
  • Low arc (on-state) voltage
  • Low capacitance and insertion loss
  • Non-radioactive materials
  • Devices are tested according to U.S.A. and International standards and recommendations
  • Low work function designs that result in long and stable service life
  • Patented Switch-Grade Fail-Short technology available on some models