Gas Discharge Tube Gdt Products Page 18 Gas Discharge Tube GDT Products

Gas Discharge Tubes 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/12/17 Product Characteristics Voltage Vs. Time Characteristic Materials Device Tin Plated 17.5 12.5 Microns Construction: Ceramic Insulator Storage and Operational Temperature -40 to +90C @1.0GHz = 0.02dB @1.4GHz = 0.03dB @1.8GHz = 0.05dB @2.0GHz = 0.06dB @2.4GHz = 0.07dB @2.8GHz = 0.08dB @3.1GHz = 0.09dB @3.5GHz = 0.10dB @4.0GHz = 0.12dB Typical Insertion Loss Note: Insertion data for customer reference only, application testing needed for verification. Note: Tested per 1kV/s waveform Voltage (V) Time (ns) 0 200 0 200 400 600 800 400 600 800 1000 1200 Max dynamic breakover voltage Hold over voltage Electrical Characteristics Part Number Device Specifications (at 25C) Life Ratings DC Breakdown in Volts (@100V/s) Impulse Break- down in Volts (@100V/s) Impulse Break- down In Volts (@1kV/s) Insulation Resistance Capaci- tance (@1MHz) Max Impulse Discharge Current (8/20s) Max Impulse Discharge Current (10/700s) AC Dischage Current (9 cycle @50Hz) DC Holdover Voltage (<150ms) Impulse Life (8/20s) (100A) MIN TYP MAX MAX MIN MAX MIN CG775 60 75 90 600 700 0.3pf 10 Shots (@1kA) 1 1 Shot at 2kA 10 Shots (@ 100A/4kV) 2 1A 52V 300 Shots CG790 72 90 108 600 700 52V CG7120 96 120 144 600 700 80V CG7150 120 150 180 600 700 80V CG7200 160 200 240 600 700 135V CG7230 186 230 276 600 700 135V CG7250 200 250 300 600 700 135V CG7350 280 350 420 750 900 135V CG7400 360 400 480 850 1000 135V CG7470 376 470 564 900 1100 135V Notes: UL Pending for CG775 and CG7470. 1. 5 x (+) and 5 x (-) applications of 1kA 8/20 s sec. 2. 5 x (+) and 5 x (-) applications of 100A 10/700 s sec. 1G @50V 1G @100V 1G @250V V-I Characteristic Curve I Axis Arc Voltage Point at which gas tube is at lowest impedance and fully conductive. Typical arc voltage at about 10 to 12 Volts Max Dynamic Breakover Voltage (Impulse Breakdown) Point at which gas tube is at lowest impedance and fully conductive Holdover Voltage Device resets to a high impedance state once the voltage across the device falls below this level. Characteristics of Gas Plasma -response to transient condition V Axis CG7 Series

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