Gas Discharge Tube (GDT) Products AC and CG3 Series AC and CG3 Series Description Littelfuse AC series two-electrode line protectors provide a high degree of surge protection in AC line applications. The two models, AC120 and AC240 are designed for use with 120VAC and 240VAC lines respectively. They are able to extinguish AC follow-on currents of at least 200A. Littelfuse CG3 two electrode high voltage (1.0 - 7.5 KV) devices are designed for surge protection and high isolation applications, and for applications for which bias voltages or signal levels of several hundred volts are normally present. Agency Approvals Features AGENCY AGENCY FILE NUMBER Rugged ceramic-metal Available in tape-and- * E320116 construction reel packaging Low capacitance (<1.5 Available with or *NOTE: CG3 7.5 product UL approval is currently pending pF) without leads 2 Electrode GDT Graphical Symbol Applications AC Series: Long branch circuits Power supplies (AC wall outlet) Test equipment Short branch circuits Submersible pumps (at breaker box, Medical electronics computer, etc) CG3 Series: CRT terminals Power supplies CATV equipment Medical electronics Antennas 2009 Littelfuse, Inc. 9 AC and CG3 Series Specications are subject to change without notice. Revised: February 10, 2010 Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specic applications.Gas Discharge Tube (GDT) Products AC and CG3 Series Electrical Characteristics Device Specications (at 25C) Life Ratings DC Breakdown Impulse Impulse Insulation Capaci- Arc Max Nominal AC Nominal Max in Volts Break- Break- Resistance tance Voltage Follow AC Discharge Impulse Surge 5 (on state down down In On Discharge Current Discharge Current ( 100V/s) ( 1MHz) Voltage) 3 4 (1 x 50Hz in Volts Volts Current Current Current ( 8/20s) 1Amp Min (10x1sec 9 cycles) ( 100V/s) ( 1 Kv/sec) ( 8/20s) 50-60Hz) Part Number MIN TYP MAX MAX MIN MAX TYP NOTES: 1. Refer to Production Dimensions section, outline A devices Product Characteristics 2. Refer to Production Dimensions section, outline B devices 3. Tested to UL1449 Third Edition -- 120V r.ms. for AC120, 230V r.m.s. all others. Conducted with suitable MOV connected in series. Core Outline A & B items: 4. 10 x 5(+) and 5(-) applications 5kA 8/20s Device: Tin Plated 17.512.5 Microns 5. 1 x 1(+) and 1(-) application 10kA 8/20s 6. CG3 7.5 product UL approval is currently pending Axial Outline A items: 7. When ordering this item, use suffix code D004 when entering the part number. Materials Device: Nickel Plated 25 Microns The older product version without D004 suffix code has been discontinued. Wire: Tin Plated 17.512.5 Microns Refer to Part Numbering System section for additional information. Axial Outline B items: Device & Wire: Tin Plated 17.512.5 Microns LF Logo, Voltage and date code Product Marking Black ink positive print Glow to arc < 0.5Amps transition current Glow Voltage ~ 140 Volts Storage and Operational -40 to +90 Temperature 2009 Littelfuse, Inc. AC and CG3 Series 10 Specications are subject to change without notice. Revised: February 10, 2010 Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specic applications. Device Dimension Type