Gas Discharge Tubes CG4 Series CG4 Series CG4 Series RoHS Description The Littelfuse CG4 Gas Discharge Tubes (GDT) series provides high levels of protection against fast rising transients caused by lightning disturbances. Offered in a miniature surface mount package, it has a surge rating of 3kA 8/20s. Littelfuse CG4 mini GDTs are high voltage (800- 3000V) components designed for surge protection and high isolation applications. It is also suitable for applications for which bias voltage or signal levels of several hundred volts are normally present. CG4 mini GDTs can be used in conjunction with Littelfuse MOVs (Metal Oxide Varistors) to provide superior protection performance for AC applications. Agency Approvals Agency Agency File Number Part Number Features CG40.8 - CG41.0 E320116 CG41.8 - CG43.0 Voltage Ranges 800V to Offered in SMD E320116 CG41.2 3000V package with square terminals Excellent response to fast rising transients Non-Radioactive 3kA 8/20s surge Ultra Low capacitance capability pulse as (<0.8pF) Two Electrode GDT Graphical Symbol defined by IEC 61000- RoHS compliant and nd 4-5, 2 edition Lead-free UL Recognized to UL 1449. CG41.2 is Recognized to both UL 1449 and CSA C22.2 No. 269.5. Additional Information Applications CATV equipment IEEE 803.2 compliant Ethernet interfaces Antennas Power Supplies Air conditioning Datasheet Resources SamplesSamples CG5 Series Medical electronics EV Power Station Test Equipment Inverters/Variable Frequency Drives ( VFD) Renewable Energy 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/31/20Gas Discharge Tubes CG4 Series CG4 Series Electrical Characteristics Device Specifications (at 25C) Life Ratings Arc Impulse Impulse Max Impulse AC Dischage Impulse DC Breakdown AC Dischage Voltage Part Break-down Break-down Insulation Capaci-tance Discharge Current Life in Volts Current (On State Number in Volts In Volts Resistance ( 1MHz) Current (Single, 9 (10/1000s) ( 100V/s) (50Hz, 1s) Voltage ( 100V/s) ( 1 kV/s) (8/20s) Cycles) (100A) 1A, 1Min) Min Typ Max Max Min Max Min Min Min CG40.8 640 800 960 1200 1300 CG41.0 800 1000 1200 1400 1500 CG41.2 960 1200 1440 1700 1800 5 Shots ( CG41.8 1440 1800 2160 2700 2800 3kA) 300 1G* 0.8pF 3A 10A 20V Shots CG42.0 1600 2000 2400 3100 3200 1 Shot at 5kA CG42.5 2000 2500 3000 3700 4000 CG42.7 2160 2700 3240 3800 4200 CG43.0 2400 3000 3600 4100 4500 Note: * Insulation resistance measured at: 250Vdc for CG40.8, 500Vdc for CG41.0 8, CG41.0, CG41.8 and CG42.0, 1000Vdc for CG42.5, CG42.7 and CG43.0 Product Characteristics Device Tin Plated 17.5 12.5 Microns Materials Construction: Ceramic Insulator Storage and Operational -40 to +90C Temperature Soldering Parameters - Reflow Soldering (Surface Mount Devices) Reflow Condition Pb Free assembly t P - Temperature Min (T ) 150C T s(min) P Critical Zone Ramp-up TL to TP Pre Heat - Temperature Max (T ) 200C s(max) - Time (Min to Max) (t ) 60 180 secs T L s t L T Average ramp up rate (Liquidus Temp (T ) to peak 3C/second max S(max) L T to T - Ramp-up Rate 5C/second max S(max) L Ramp-down Preheat - Temperature (T ) (Liquidus) 217C L T Reflow S(min) - Temperature (t ) 60 150 seconds t L S +0/-5 Peak Temperature (T ) 260 C P 25 Time within 5C of actual peak Temperature (t ) 10 30 seconds p time to peak temperature Time Ramp-down Rate 6C/second max (t 25C to peak) Time 25C to peak Temperature (T ) 8 minutes Max. P Do not exceed 260C 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/31/20 Temperature