Bourns GDT28H 2-Electrode Gas Discharge Tubes

Bourns GDT28H 2-Electrode Gas Discharge Tubes (GDTs) are designed to protect devices from voltage transients caused by AC power line disturbances and lighting. These high-voltage GDTs feature high insulation resistance, high current rating, wide operating temperature range, and long service life. The GDT28H GDTs are available with a 1kV to 3.3kV DC sparkover voltage range and are RoHS compliant. Typical applications include power supplies, medical devices, air conditioning, and IEC 62368-1 equipment.


  • High insulation resistance
  • High current rating
  • -40°C to 125°C operating temperature range
  • Long service life
  • 10GΩ minimum insulation resistance @100V
  • <1.5pF maximum capacitance @1MHz
  • ∼140V glow voltage
  • RoHS compliant


  • Power supplies
  • Air conditioning
  • HVAC
  • Medical devices
  • IEC 62368-1 equipment

Mechanical Diagram

Mechanical Drawing - Bourns GDT28H 2-Electrode Gas Discharge Tubes


Published: 2023-08-07 | Updated: 2023-09-14