TE Connectivity Raychem Distributor

Gas Discharge Tubes

GDTs from TE Connectivity are placed in front of, and in parallel with, sensitive telecom equipment

TE Connectivity Raychem's Gas Discharge TubesTE Raychem Circuit Protection’s GDTs (Gas Discharge Tubes) are placed in front of, and in parallel with, sensitive telecom equipment such as power lines, communication lines, signal lines and data transmission lines to help protect them from damage caused by transient surge voltages that may result from lightning strikes and equipment switching operations. These devices do not influence the signal in normal operation. However, in the event of an overvoltage surge, such as a lightning strike, the GDT switches to a low impedance state and diverts the energy away from the sensitive equipment.

These GDTs offer a high level of surge protection, a broad voltage range, low capacitance, and many form factors including new surface-mount devices, which makes them suitable for applications such as MDF (Main Distribution Frame) modules, high data-rate telecom applications (e.g. ADSL and VDSL), and surge protection on power lines. Their low capacitance also results in less signal distortion. When used in a coordinated circuit protection solution with PolySwitch devices, they can help equipment manufacturers meet stringent safety regulatory standards.

  • Wide range of voltages (75 V - 4000 V)
  • Crowbar device with low arc voltage
  • Devices tested per ITU K.12 recommendations
  • Various lead configurations and surface-mount options
  • High accuracy spark-over voltages for high precision designs
  • Optional fail-short mechanism
  • Low capacitance and insertion loss
  • Wide range of form factors
  • Non-radioactive materials
  • Devices certified to UL497B and UL1449

Digi-Key P/N Manufacturer P/N Description  
GTCA26-151M-R05-FS-ND GTCA26-151M-R05-FS GAS TUBE 6MM 150V 20% 5KA AXIAL Datasheet
GTCA28-201M-R05-ND GTCA28-201M-R05 GAS TUBE 8MM 200V 20% 5KA AXIAL Datasheet
GTCA28-351M-R05-ND GTCA28-351M-R05 GAS TUBE 8MM 350V 20% 5KA Datasheet
GTCS26-900M-R05-2CT-ND GTCS26-900M-R05-2 GAS TUBE 6MM 90V 20% SMD 5KA Datasheet
GTCA36-301M-R10-ND GTCA36-301M-R10 GAS TUBE 6MM 300V 20% 10KA AXIAL Datasheet
GTCN36-401M-R05-ND GTCN36-401M-R05 GLASS TUBE 6MM 400V 20% 5KA Datasheet
GTCR38-471M-R10-FS-ND GTCR38-471M-R10-FS GLASS TUBE 8MM 470V 20% 10KA Datasheet
GTCS36-750M-R10CT-ND GTCS36-750M-R10-2 GLASS TUBE 6MM 75V 20% 10KA SMD Datasheet
Two Electrode Gas Discharge Tubes Three Electrode Gas Discharge Tubes