?2010 littelfuse, inc. gas discharge tube (gdt) products 13 revised: january 21, 2011 specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their specifc applications. 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. features ? rugged ceramic-metal construction ? low capacitance (<1.5 pf) ? available in tape-and- reel packaging ? available with or without leads agency agency file number ? e320116 * agency approvals ? ac and cg3 series applications ? crt terminals ? catv equipment ? antennas ? power supplies ? medical electronics cg3 series: ? long branch circuits (ac wall outlet) ? short branch circuits (at breaker box, computer, etc) ? power supplies ? test equipment ? submersible pumps ? medical electronics ac series: *note: cg3 7.5 product ul approval is currently pending 2 electrode gdt graphical symbol
?2010 littelfuse, inc. gas discharge tube (gdt) products 14 revised: january 21, 2011 specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their specifc applications. ac and cg3 series ac and cg3 series electrical characteristics part number device dimension type device specifcations (at 25c) life ratings dc breakdown in volts (@100v/s) impulse break- down in volts (@100v/s) impulse break- down in volts (@1 kv/sec) insulation resistance capaci- tance (@1mhz) arc voltage (on state voltage) @1amp min max follow on current 3 nominal ac discharge current (10x1sec @50-60hz) ac discharge current (1 x 50hz 9 cycles) nominal impulse discharge current 4 (@8/20s) max surge current 5 ( @8/20s ) min typ max max min max typ ac120 1 a 230 285 340 500 550 10 g (at 100v) <1.5 pf ~ 25 v 200 amps 5 a 65 a 10 shots 5ka 1 shot 10ka ac240 1 a 480 600 720 1100 1200 cg3 1.0 1 a 800 1000 1200 1400 1500 10 g (at 100v) <1.5 pf ~ 25 v 200 amps n/a n/a 10 shots 5ka 1 shot 10ka cg3 1.1 1 a 880 1100 1320 1600 1700 cg3 1.2 1 a 960 1200 1440 1700 1800 cg3 1.3 1 a 1040 1300 1560 1800 1900 cg3 1.5 1 a 1200 1500 1800 1800 2000 cg3 2.0 1 a 1600 2000 2400 2500 2750 cg3 2.5 1 a 2000 2500 3000 3200 3500 cg3 2.7 1 a 2160 2700 3240 3600 4000 cg3 3.0 1 a 2400 3000 3600 4000 4200 cg3 3.3 1 a 2640 3300 3960 4600 4700 cg3 4.0 2 b 3200 4000 4800 5800 6000 cg3 4.5 2 b 3600 4500 5400 6150 6500 cg3 5.0 2 b 4000 5000 6000 7500 8000 cg3 6.2 2,7 b 4960 6200 7440 8100 9500 cg3 6.5 2,7 b 5200 6500 7800 9500 10000 cg3 7.5 2,6,7 b 6000 7500 9000 10000 10600 notes: 1. refer to production dimensions section, outline a devices 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. 4. 10 x [5(+) and 5(-)] applications 5ka @ 8/20s 5. 1 x [1(+) and 1(-)] application 10ka @ 8/20s 6. cg3 7.5 product ul approval is currently pending 7. when ordering this item, use suffix code d004 when entering the part number. the older product version without d004 suffix code has been discontinued. refer to part numbering system section for additional information. product characteristics materials core outline a & b items: device: tin plated 17.512.5 microns axial outline a items: device: nickel plated 2C5 microns wire: tin plated 17.512.5 microns axial outline b items: device & wire: tin plated 17.512.5 microns product marking lf logo, voltage and date code; black ink positive print glow to arc transition current < 0.5amps glow voltage ~ 140 volts storage and operational temperature -40 to +90
?2010 littelfuse, inc. gas discharge tube (gdt) products 15 revised: january 21, 2011 specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their specifc applications. ac and cg3 series ac and cg3 series refow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 180 secs average ramp up rate (liquidus temp (t l ) to peak 3c/second max t s(max) to t l - ramp-up rate 5c/second max refow - temperature (t l ) (liquidus) 217c - temperature (t l ) 60 C 150 seconds peak temperature (t p ) 260 +0/-5 c time within 5c of actual peak temperature (t p ) 10 C 30 seconds ramp-down rate 6c/second max time 25c to peak temperature (t p ) 8 minutes max. do not exceed 260c soldering parameters - refow soldering (surface mount devices) ti me te mperature t p t l t s(max) t s(min) 25 t p t l t s time to peak temperature (t 25oc to peak) ramp-down ramp-up preheat critical zone t l to t p soldering parameters - wave soldering (thru-hole devices) soldering parameters - hand soldering dwell time 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 time (seconds) temperature (c) - measured on bottom side of boar d cooling time preheat time wave parameter lead-free recommendation preheat: (depends on flux activation temperature) (typical industry recommendation) temperature minimum: 100 c temperature maximum: 150 c preheat time: 60-180 seconds solder pot temperature: 280 c maximum solder dwell time: 2-5 seconds recommended process parameters: solder iron temperature: 350 c +/- 5c heating time: 5 seconds max.
?2010 littelfuse, inc. gas discharge tube (gdt) products 16 revised: january 21, 2011 specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their specifc applications. ac and cg3 series ac and cg3 series packaging dimensions direction of feed 254.0 - 356.0 [10.0 - 14.0] 80.0 [3.15] 22.8 [0.898] 52.4 [2.063] 6.4 [0.252] <0.8 max <1.2 max. lead bend 5.0 pitch [0.197] for 'ltr' option code axial lead items direction of feed 254.0 - 356.0 [10.0 - 14.0] 80.0 [3.15] 22.8 [0.898] 52.4 [2.063] 6.4 [0.252] <0.8 max <1.2 max. lead bend 5.0 pitch [0.197] 8.0 0.2 [0.314 0.00 8 ] 8.0 0.2 [0.314 0.00 8 ] 6.0 0.2 0.80 dia. typ. [0.031] 62 2 [0.236 0.0 08] [2.441 0.079] profile view t op view 7.9 0.3 0.80 dia. typ. [0.031] [0.311 0.01 2] a b device dimensions axial 6.0 0.2 [0.236 0.0 08] profile view t op view 7.9 0.3 [0.311 0.01 2] a b semi?profile view 8.0 0.2 [0.314 0.00 8 ] 8.0 0.2 [0.314 0.00 8 ] core part numbering system and ordering information cg3 x.x xxx d004 breakdown v oltage 1.0 = 1000v 1.1 = 1100v 1.2 = 1200v 1.3 = 1300v 1.5 = 1500v 2.0 = 2000v 2.5 = 2500v 2.7 = 2700v 3.0 = 3000v 3.3 = 3300v 4.0 = 4000v 4.5 = 4500v 5.0 = 5000v 6.2 = 6200v 6.5 = 6500v 7.5 = 7500v series cg3 lead / packaging option = core (no leads) / bulk pack, 400 pcs per bag l = leaded / bulk pack, 50 pcs per tray ltr = leaded / tape & reel, 500 pcs per reel special suf?x code enter this d004 special suf?x code when placing orders for cg36.2, cg36.5 and cg37.5 only ac xxx xxx ac line v oltage 120 = 120v 240 = 240v series lead / packaging option = core (no leads) / bulk pack, 400 pcs per bag l = leaded / bulk pack, 50 pcs per tray ltr = leaded / tape & reel, 500 pcs per reel
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