revised: january 10, 2013 description littelfuse highly reliable cg/cg2 series gdts provide a high degree of surge protection in a small size ideal for board level circuit protection. gdts function as switches which dissipate a minimum amount of energy and therefore handle currents that far surpass other types of transient voltage protection. their gas-flled, rugged ceramic metal construction make them well suited to adverse environments. the cg/cg2 series comes in a variety of forms including surface mount, core, straight and shaped leads, to serve a variety of mounting methods. the cg series (75-110v) is ideal for protection of test and communication equipment and other devices in which low voltage limits and extremely low arc voltages are required. the cg2 series (145v-1000v) is ideal for protecting equipment where higher voltage limits and holdover voltages are necessary. features ? r ugged ceramic-metal construction ? l ow capacitance (<1.5pf) ? meets rea pe-80 ? a vailable in surface mount, and a variety of lead options options applications ? communication lines and equipment ? ca tv equipment ? t est equipment ? dat a lines ? p ower supplies ? instr umentation circuits ? medical electronics ? adsl equipment ? t elecom slic protection agency agency file number e128662 e320116 agency approvals cg/cg2 series 2 electrode gdt graphical symbol gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
revised: january 10, 2013 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/sec) insulation resistance capaci- tance (@1mhz) arc voltage (on state voltage) @1amp min surge life (@500a 10/1000s) nominal impulse discharge current (8/20s) nominal ac discharge current (10x1sec @50-60hz) ac dischage current (9 cycle @50hz) dc holdover voltage 2 max impulse discharge current (1 application @ 10/350s) min typ max max min max typ typ cg75 60 75 90 400 650 10 10 (at 50v) 1.5 pf 15 v 400 shots 10 shots (@20ka) 3 20 a 100 a 52 v 4ka cg90 72 90 108 400 600 cg90 sn 72 90 108 400 600 cg110 88 110 132 450 600 80 v 2.5ka cg2145 116 145 174 500 600 10 10 (at 100v) cg2145 sn 120 145 174 500 600 cg2230 195 230 265 600 700 135 v cg2230 sn 184 230 276 600 700 cg2250 213 250 288 625 725 cg2250 sn 200 250 300 625 725 cg2300 255 300 345 700 800 cg2300 sn 240 300 360 700 800 cg2350 297 350 403 750 900 cg2350 sn 280 350 420 750 900 cg2420 357 420 483 800 1000 cg2470 400 470 540 850 1200 cg2470 sn 376 470 564 850 1200 cg2600 510 600 690 1000 1400 cg2600 sn 480 600 720 1000 1400 cg2800 1 680 800 920 1200 1500 10 shots (@10ka) 10 a cg21000 1 850 1000 1150 1500 1600 65 a notes: 1. tested to ul1449 third edition 2. reference rea pe-80, 0.2a. tested to itu-t rec k.12 and rea pe 80 < 150 msec. product characteristics materials ls, axial: device: tin plated 2C5 microns lead wires: tin plated 17.5 12.5 microns construction: ceramic insulator core: device: tin plated 17.5 12.5 microns. construction: ceramic insulator ms: device: dull tin plated 7C9 microns construction: ceramic insulator product marking lf logo, voltage and date code; black in positive print glow to arc transition current < 0.5amps glow voltage 60-160 volts storage and operational temperature -40 to +90 maximum follow on current 1 230 volts r.m.s, 200 amps. (800v and 1000v devices tested to ul1449 3rd edition) gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
revised: january 10, 2013 device dimensions [0.331 0.012] 8.4 0.3 [0.239 0.012] 6.07 0.3 [0.0157 0.0012] 0.40 0.03 0.004 2 surfaces [0.032] 0.80 [0.388 0.012] 9.85 0.30 [0.439 0.012] 11.15 0.30 [0.331 0.012] 8.40 0.3 8.10 max. [0.319 dia max.] 9.85 [0.388] 11.65 [0.459] 8.60 [0.339] 1.80 [0.071] top view profile view solder pad layout 6.05 0.2 [0.238 0.0079] 5.58 [0.220] ?8.300.1 r5.29 [r0.208] 4 0.2 [0.157 0.0079] 8.30 0.1 [0.327 0.0039] 8.71 [0.343] 2.29 [0.090] 5.89 [0.232] 0.47 0.1 [0.019 0.0039] 9.30 0.2 [0.366 0.0079] top view profile view semi?profile view solder pad layout leaded 'ls' type shaped lead devices 'ms' type devices leaded 'l' type straight axial devices core devices 6.05 0.2 [0.268 0.0080] 5.58 [0.232] 8.71 [0.343] 2.29 [0.090] 5.89 [0.232] 4.00 16.00 24.00 11.50 1.75 top view profile view semi?profile view solder pad layout top view profile view solder pad layout dimensions mm [inches] shaped lead 0.512 (13.0) arbor hole dia. 1.01 (25.7) 12.99 (330.0) direction of feed 16 250g xxxx voltage rating current rating date code (contact littelfuse for additional information) littelfuse trademark 8.30 0.1 9.30 0.2 ?8.300.1 ?6.81 [0.268] 0.47 0.1 r5.29 [r0.208] 4 0.2 [0.161 0.0080] 8.10 dia. max. [0.319] 6.07 0.15 0.81 dia. typ. [0.032] 62 2 [0.239 0.006] [0.331 0.012] 8.4 0.3 [0.0157 0.0012] 0.40 0.03 0.004 2 surfaces [0.032] 0.81 [0.388 0.012] 9.85 0.30 [0.439 0.012] 11.15 0.30 [0.239 0.012] 6.07 0.30 [0.331 0.012] 8.40 0.3 9.85 [0.388] 11.68 [0.460] 8.66 [0.341] 1.77 [0.070] 8.10 max. [0.319 dia max.] 16 250g xxxx 16 250g xxxx 16 250g xxxx 16 250g xxxx 16 250g xxxx surface mount (ms) dimensions top view profile view 6.07 0.15 [0.239 0.0059] 5.89 [0.232] 8.10 max. [0.032 max.] 8.10 max . top view profile view semi?profile view 0.47 0.1 [0.019 0.0039] gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
revised: january 10, 2013 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 temperature 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. gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
revised: january 10, 2013 packaging dimensions 24 +0.3 / -0.1 [ 0.945 +0.019 / -0.004] 11.5 0.1 [0.453 0.004] 1.75 0.1 [0.069 0.004] 1.5 dia. max. [0.059] 1.5 dia. max. [0.059] 16 0.1 [0.630 0.004] 0.5 0.05 [0.020 0.002] 0.5 0.01 [0.020 0.004] 10x4 0.1 = 40 0.2 [ 10x.157 0.004 = 1.575 0.008] 4 0.1 [0.157 0.004] 11.75 0.1 [0.463 0.004] 8 0.1 [0.315 0.004] 9 0.1 [0.354 0.004] 1.9 [0.075] direction of feed 25.7 [1.01] 275.0 [10.82] 100.0 [3.93] 25.0 [0.98] 76.0 [2.99] for 'ls' type shaped 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] 16 +0.3 / -0.1 [ 0 .630 +0.012 / -0.004 ] 7.5 0.1 [0.295 0.00 4] 8.5 0.1 [0.335 0.00 4] 1.75 0.1 [0.069 0.00 4] 1.5 dia. max. [0.059] 1.5 dia. max. [0.059] 12 0.1 [0.472 0.0 04] 8.6 0.1 [0.339 0.00 4] 0.4 0.05 [0.0 16 0.0 02] 10x4 0.1 = 40 0.2 [ 10 x 0.157 0.004 = 1.575 0.0 08] 4 0.1 [0.1 57 0.0 04] direction of feed 17.7 [0.697] 275.0 [10.83] 100.0 [3.94] 25.0 [0.98] 76.0 [2.99] for 'l' type axial lead items core and 'ms' type 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] gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
revised: january 10, 2013 part numbering system and ordering information examples: cg75 -- a non-leaded 75v device cg2230l -- a leaded 230v device cg2800ltr -- a leaded 800v device, tape-and-reel (per eia st andard rs-296-d) notes: cg/cg2 devices with other breakdown voltages in the 75-1000 v range are available upon request. cg2 xxx xx * xx breakdown voltage 75 90 110 145 230 250 300 350 470 600 800 1000 series cg -- for 75, 90, or 110v cg2 -- for 145v to 1000v lead option code option code* (blank) = no leads / core l = straight leads ls = shaped leads ms = surface mount packaging option code (blank) = no leads / core, bulk bag - 400 pcs l(blank) = straight lead, tray - 50 pcs ltr = straight lead, tape & reel per eia rs-296-e - 500 per reel lte = straight lead, tape & reel per iec 60286-1 - 500 per reel ls(blank) = shaped lead (see ls dimensions), tape & reel - 500 per reel sn = may have different dc breakover voltage limit. please refer to electrical characteristics table for additional information. gas discharge tube (gdt) products ?2013 littelfuse, inc. 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. cg/cg2 series cg/cg2 series
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