Gas Discharge Tube (GDT) Products CG/CG2 Series CG/CG2 Series Description Littelfuse highly reliable CG/CG2 Series GDTs provide a high degree of surge protection in a small size ideal for board level circuit protection. GDTs function as switches which dissipate a minimum amount of energy and therefore handle currents that far surpass other types of transient voltage protection. Their gas-lled, rugged ceramic metal construction make them well suited to adverse environments. The CG/CG2 series comes in a variety of forms including surface mount, core, straight and shaped Agency Approvals leads, to serve a variety of mounting methods. The CG Series (75-110V) is ideal for protection of test AGENCY AGENCY FILE NUMBER and communication equipment and other devices E128662 in which low voltage limits and extremely low arc voltages are required. E320116 The CG2 Series (145V-1000V) is ideal for protecting equipment where higher voltage limits and holdover 2 Electrode GDT Graphical Symbol voltages are necessary. Features Rugged Ceramic-Metal Meets REA PE-80 construction Available in surface Low Capacitance mount, and a variety of (<1.5pf) lead options options Applications Communication lines Instrumentation circuits and equipment Medical electronics CATV equipment ADSL equipment Test equipment Telecom SLIC Data lines protection Power supplies 2009 Littelfuse, Inc. 27 CG/CG2 Series Specications are subject to change without notice. Revised: November 10, 2009 Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specic applications.Gas Discharge Tube (GDT) Products CG/CG2 Series Electrical Characteristics Device Specications (at 25C) Life Ratings DC Breakdown Impulse Impulse Insulation Nominal Nominal AC DC Max Capaci- Arc Surge in Volts Break- Break- Resistance Impulse AC Dischage Holdover Impulse tance Voltage Life 2 down down In (on state Discharge Discharge Current Voltage Discharge ( 100V/s) ( 1MHz) ( 500A Voltage) (9 cycle in Volts Volts Current Current Current 10/1000s) 1Amp (10x1sec 50Hz) ( 100V/s) ( 1 Kv/sec) (8/20s) (1 Application 50-60Hz) Min Part 10/350s) Number MIN TYP MAX MAX MIN MAX TYP TYP NOTES: 1. Tested to UL1449 Third Edition 2. Reference REA PE-80, 0.2A. Tested to ITU-T Rec K.12 and REA PE 80 < 150 mSec. 3. Leaded devices = 5x 5(+) or 5 (-) applications 20kA 8/20Sec. (75 to 600 volt devices.) MS and Core devices = 10x 5(+) and 5(-) applications 10kA 8/20S (800 to 1000 volt devices.) Product Characteristics Glow to arc LS, Axial: < 0.5Amps transition current Device: Nickel Plated 25 Microns Lead Wires: Tin Plated 17.5 12.5 Microns Glow Voltage 60-160 Volts Construction: Ceramic Insulator Core: Materials Storage and Device: Tin Plated 17.5 12.5 Microns. Operational -40 to +90 Construction: Ceramic Insulator Temperature MS: Device: Dull Tin Plated 79 Microns Maximum Follow 230 Volts r.m.s, 200 Amps. Construction: Ceramic Insulator 1 On Current (800V and 1000V devices tested to UL1449 3rd edition) LF Logo, Voltage and date code Black in Product Marking positive print 2009 Littelfuse, Inc. CG/CG2 Series 28 Specications are subject to change without notice. Revised: November 10, 2009 Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specic applications.