? 2016 littelfuse, inc. specifcations are subject to change without notice. revised: 06/30/16 description 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) devices 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. this cg4 mini gdts are also suitable for applications with bias voltages or signal levels of several hundred volts. it can be used in conjunction with littelfuse mov (metal oxide varistor) to provide superior protection performance. features ? voltage ranges 800v to 3000v ? excellent response to fast rising transients ? 3ka 8/20s surge rating ? ul 1449 recognized ? offered with two squared terminals ? non-radioactive ? ultra low capacitance (<0.8pf) ? rohs compliant and lead-free applications ? catv equipment ? antennas ? air conditioning ? ev power station ? inverters/variable frequency drives ( vfd) ? ieee 803.2 compliant ethernet interfaces ? power supplies ? medical electronics ? test equipment ? renewable energy agency agency file number e320116 agency approvals cg4 series rohs two electrode gdt graphical symbol gas discharge tube (gdt) products cg4 series
? 2016 littelfuse, inc. specifcations are subject to change without notice. revised: 06/30/16 product characteristics materials device tin plated 17.5 12.5 microns construction: ceramic insulator storage and operational temperature -40 to +90c 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 electrical characteristics part number 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/s) insulation resistance capaci- tance (@1mhz) max impulse discharge current (8/20s) ac dischage current (50hz, 1sec) ac dischage current (single, 9 cycles) arc voltage (on state voltage @ 1amp, 1min) impulse life (10/1000s) (100a) min typ max max min max min min min cg40.8 640 800 960 1200 1300 1g* 0.8pf 10 shots @ (3ka) 1 shot at 5ka 3a 10a 20v 300 shots cg41.0 800 1000 1200 1400 1500 cg41.2 960 1200 1440 1600 1700 cg41.8 1440 1800 2160 2400 2500 cg42.0 1600 2000 2400 2600 2700 cg42.5 2000 2500 3000 3000 3200 cg42.7 2160 2700 3240 3200 3600 cg43.0 2400 3000 3600 3500 3900 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 gas discharge tube (gdt) products cg4 series
? 2016 littelfuse, inc. specifcations are subject to change without notice. revised: 06/30/16 device dimensions product marking littelfuse logo voltage code production year code lf 120 0 16 0.6 0.1 6.2 0.2 3.5 0.2 6.0 0.2 4.2 0.2 top view profile view top view 7.2 3.5 1.3 r ecommended soldering p ad layout dimensions in millimeters part numbering system and ordering information cg4 x.x sm breakdown v oltage lead option code 0.8 = 800v 1.0 = 1000v 3.0 = 3000v (voltage code examples for x.x) series cg4 sm (surface mount, two squared terminals) taping and reel specifcations 3304.0 >1.5 typ. 18 typ. 100 typ. pa ck aging quantity: 10 00 pcs per reel (1 3?) 1 reels per inner bo x 10 inners bo x per carton 1 0,0 00 pcs per full carton w f e 2.00 0.10 p0 p d k a0 b0 t ?1.50min unit = mm item spec item spec p 8 0.1 e 1.75 0.1 p0 4.0 0.1 d ?1.55 0.05 w 16.0 0.3 k 6 .5 0.1 f 7.5 0.1 t 0.4 0.05 a0 4.9 0.1 b0 6 .5 0.1 gas discharge tube (gdt) products cg4 series
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