On the function and the introduction of ceramic gas discharge tube
GDT ceramic gas discharge tube which is mainly composed of two the number of electrodes, there is a certain gap between the electrodes, between the electrodes filled with inert gas and stable, and maintain a certain pressure protection device using ceramic and sealed form, called ceramic gas discharge tube.
GDT: with fast response speed, the response time is less than 100nS.
GDT: is a switching type parallel to the circuit to bypass a lightning surge current protection device.
GDT: voltage from 70V~6000V, inrush current capability from Purnell to tens or even hundreds of amperes to several hundred amperes ranging from good.
GDT: package size diversification, Phi 5.5*6, Phi 5.0*7.2, Phi 8*6, Phi 8*8, Phi 8*10, Phi 11, Phi 20, Phi 25, Phi 32, 6.2*4.2, 4.0*4.2, 1812 (4532), 1206 different specifications of the ceramic gas discharge tube.

GDT: capacitance value is low, generally only a few skin.
GDT: no polarity, convenient installation.
GDT: high resistance, not easy ageing insulation, high reliability.
GDT: dedicated to high frequency communication signal line protection, the general can not be directly used in the active circuit protection.
Because the ceramic gas discharge tube has continued flow problems and can not be directly used in the active circuit protection, and protection in the active products must use limit pressure protection device type (HYPERFIX type varistor or lightning protection etc.) with the use of.
Gas discharge tubes are widely used in communication products and consumer protection of semiconductor sensitive device, to prevent the IC from transient overvoltage impact and damage
Communication equipment against lightning protection overvoltage: such as ADSL, MODEM, CATV, IC card telephone, Ethernet switches, network card, splitter, telephone, fax machine, RS485, RS232 port, antenna, mobile base stations, distribution frame, double power regulator etc..
Due to the discharge of the pulse high voltage, usually when the selection of the design is to do a relatively safe and reliable protection.
  

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