Raychem Gas Discharge Tubes (GDTs) are commonly used to help protect sensitive telecom equipment such as power lines, communication lines, signal lines and data transmission lines from damage caused by transient surge voltages that typically result from lightning strikes and equipment switching operations.
All parts are RoHS compliant * Insulation Resistance measured at 50V for devices less than 90V
Insulation Resistance measured at 250V for devices less than 500V
† <1.2pF for 75V and 90V devices
** DCSO 60~105
†† GTCx28-xxxM-R20 parts only up to 230V
Two Electrode GDT - Example Part Number for R Series
Three Electrode GDT - Example Part Number for R Series
Marking Reference Guide for Gas Discharge Tubes
Example:
Agency Recognition for Raychem Gas Discharge Tubes
Standard
Title
File Number
UL497B
Transient Voltage Surge Suppressors
E179610*
Notes:
*All R series devices are UL 497B rated.
Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.
The devices are intended for protection against occasional overvoltage fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated.
Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical procedures for electronic components.