Little Fuse’s New Gas Discharge Tube (GDT) Guards High Bandwidth Interfaces 


SH Series – 5kA Squared GDT, Surface Mount, ≤0.7pF Capacitance

The SH Series Gas Discharge Tube (GDT) is designed to provide high levels of protection against fast-rising transients caused by lightning disturbances. It is offered in a squared surface mount package (5.0×5.0×4.2mm) with a 5kA surge capability and a ≤0.7pF off-state capacitance value.


  • 5kA surge capability in minimal footprint (5.0×5.0×4.2mm)
  • Ultra-low capacitance (< 0.7 pF) that does not vary as the signal voltage varies
  • Surface mount form factor with squared body and terminals


  • G.Fast, xDSL, 10GbE, and 10/100/1000 BaseT Ethernet port protection
  • Satellite, CATV equipment and set top boxes
  • Coaxial cable
  • Ethernet, RS-485, RS-232, etc. interfaces
  • Broadband equipment
  • General telecom equipment
  • Industrial automation
  • Power Inverter/Variable Frequency Drivers (VFDs) 

Video: (For Chinese subtitle version CLICK HERE