344 www.littelfuse.com gas discharge tubes omega range greentube sl1024b series gas plasma arresters ordering information 3 electrode gdt a=tip b=ring e=ground (centre electrode) graphical symbol a b e 1024 b sl voltage pin configuration failsafe optio f=plastic s=solder n c=core r=leaded ?8.0+ _0.2 9.5 max ?1.0+ _0.2 all dimensions in mm the sl1024b series offers high levels of current handling on fast rising transients created by induced lightning disturbances. these devices are extremely robust and are able to divert pulses of 20,000 amps. the sl1024b also features ultra low capacitance (typically 1pf or less) making them ideal for the protection of high-speed transmission equipment. features ? rohs compliant except ?s?suffix ?low insertion loss ? excellent response to fast rising transients. ? ultra low capacitance. ? 20ka surge capability tested with 8/20 s pulse as defined by iec 61000-4-5 ? available with thermal failsafe option (add ??or ??suffix to part number) applications: ? broadband equipment. ? adsl equipment. ? xdsl equipment. ? satellite and catv equipment. splitters ? general telecom equipment. mechanical specifications: weight: 2.7g (0.095 oz.) materials: electrode base: nickel iron alloy electrode plating: bright sn body: ceramic device marking: littelfuse ?f?marking, voltage and date code. red. pb rohs sl1024b xxxc sl1024b xxxr sl1024b xxxrf
345 www.littelfuse.com 8 gas discharge tubes gas discharge tubes greentube sl1024b series gas plasma arresters omega range dc voltage (v) 90 145 150 230 250 260 300 350 400 420 450 500 dc breakover voltage min-max 7 @ 100v/sec (v) 70-120 116-174 120-180 184-276 200-300 210-310 240-360 280-420 320-480 345-500 360-540 400-500 max dynamic breakover voltage @ 100/? (v) 600 500 500 350 400 420 450 500 600 650 650 700 alternating discharge current 1,3 (a) 20 20 20 20 20 20 20 20 20 20 20 20 max single impulse discharge current 10/350? 5,2 (ka) 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 max single impulse discharge current 8/20? 1.6 (ka) 40 40 40 40 40 40 40 40 40 40 40 40 max repetitive impulse discharge current 8/20? 1,4 (ka) 20 20 20 20 20 20 20 20 20 20 20 20 (1) total current through centre (ground) electrode, both line electrodes pulsed simultaneously; half value through respective line terminal to ground. (2) 100 amps, 10/1000 s pulse (3) 10 shots, a.c. 60 hz, 1sec. duration. (4) 10 shots, 8/20 s waveform (5) either end (line) electrode to centre (ground) electrode (6) applies to ??option devices mounted in a suitable connector with high pressure contacts. littelfuse 3 terminal arrester series totally non-radioactive, ul recognized part number sl1024b090 sl1024b145 sl1024b150 sl1024b230 sl1024b250 sl1024b260 SL1024B300 sl1024b350 sl1024b400 sl1024b420 sl1024b450 sl1024b500 alternating discharge current 5,3 (a) 10 10 10 10 10 10 10 10 10 10 10 10 voltage (v) time (ns) 0 200 400 600 800 1000 1200 max dynamic breakover voltage hold-over voltage on-state voltage voltage vs time characteristic 50 45 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 current (a) time (s) 1 line to ground both lines to ground time vs. current for failsafe pb rohs
346 www.littelfuse.com gas discharge tubes greentube sl1024b series gas plasma arresters omega range 0 0 25 50 75 100 125 150 175 200 225 250 50 100 150 200 250 300 350 400 450 500 time in seconds temperature ?c profile for reflow soldering solder t 1 max = 266 o c flow area t 1 = 239 o c 200 300 tm = 179 o c forced cooling preheating area 100 10 20 30 40 time (seconds) temperature (?c) profile for wave soldering notes: t 1 max = maximum tab tem p erature = 266 o c t 1 = flow tem p earture of solder = 239 o c tm = meltin g point of solder = 179 o c tamb = 25 o c 1. maximum p ermissible rate of tem p erature chan g e = 7 o c / sec 2. not for rf style devices pb rohs
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