3-electrode gas discharge tube (gdt) revision march 6, 2014 1 / 4 @socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. un3e5 series socay electronics co., ltd. www.socay.com un3e5-xxxl un3e5-xxxlm un3e5-xxxlsmd gas discharge tubes (gdt) are classical components for protecting the installations of the telecommunications. it is essential that it and telecommunications systems -with their high-grade but sensitive electronic circuits - be protected by arresters. they are thus fitted at the input of the power supply system together with varistors and at the connection points to telecommunication lines. they have become equally indispensable for protecting base stations in mobile telephone systems as well as extensive cable television (catv) networks with their repeaters and distribution systems. these protective components are also indispensable in other sectors, in ac power transmission systems, they are often used with current-limiting varistors, in customer premises equipment such as dsl modems, wlan routers, tv sets and cable modems in air-conditioning equipment, the integral black-box concept offers graduated protection by combining arresters with varistors, ptc, diodes and inductor. agency agency file number e341061 u non-radioactive u rohs compliant u low insertion loss u excellent response to fast rising transients u ultra low capacitance u 5ka surge capability tested with 8/20 s pulse as de ? ned by iec 61000-4-5 materials leaded device: nickel-plated with tinplated wires surface mount: dull tin-plated product marking union xxxl xxx -nominal voltage l - 5ka glow to arc transition current < 0.5 amps glow voltage ~60 volts storage and operational temperature -40 to +90 c un3e5-xxxlm ~0.78g un3e5-xxxlm ~0.66g weight un2e5-xxxlsmd ~0.68g climatic category (iec 60068-1) 40/ 90/ 21 u communication equipment u catv equipment u test equipment u data lines u power supplies u telecom slic protection u broadband equipment u adsl equipment, including adsl2+ u xdsl equipment u satellite and catv equipment u consumer electronics features schematic symbol agency approvals product characteristics applications description a e b a = tip b = ring e = ground (center electrode)
3-electrode gas discharge tube (gdt) revision march 6, 2014 2 / 4 @socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. un3e5 series socay electronics co., ltd. www.socay.com radial leaded devices (un3e5-xxxlm) without wire devices (un3e5-xxxl) surface mount devices (un3e5-xxxlsmd) service life dc spark-over voltage maximum impulse spark-over voltage maximum capacitance arc voltage nominal impulse discharge current max impulse discharge current nominal alternating discharge current impulse life part number marking @100v/s @100v/ s @1kv/ s minimum insulation resistance @1mhz @1a @8/20 s 4) 5 times @8/20 s 4) 1 time @50hz 4) 1 sec 10 times @10/1000 s 4) 300 times un3e5-75lm un3e5-75l un3e5-75lsmd union 75l 75v 20% 500v 600v 1 g (at 25v) 1.5pf ~15v 5ka 10ka 5a 200a un3e5-90lm un3e5-90l un3e5-90lsmd union 90l 90v 20% 500v 600v 1 g (at 50v) 1.5pf ~15v 5ka 10ka 5a 200a UN3E5-150Lm UN3E5-150L UN3E5-150Lsmd union 150l 150v 20% 500v 600v 1 g (at 50v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-230lm un3e5-230l un3e5-230lsmd union 230l 230v 20% 600v 700v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-250lm un3e5-250l un3e5-250lsmd union 250l 250v 20% 600v 700v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-300lm un3e5-300l un3e5-300lsmd union 300l 300v 20% 800v 900v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-350lm un3e5-350l un3e5-350lsmd union 350l 350v 20% 800v 900v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-420lm un3e5-420l un3e5-420lsmd union 420l 420v 20% 900v 1000v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-470lm un3e5-470l un3e5-470lsmd union 470l 470v 20% 900v 1000v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a un3e5-600lm un3e5-600l un3e5-600lsmd union 600l 600v 20% 1100v 1200v 1 g (at 100v) 1.5pf ~20v 5ka 10ka 5a 200a notes: 1). terms in accordance with itu-t k.12 and gb/t 9043-2008 2). at delivery aql 0.65 level , din iso 2859 3). tip or ring electrode to center electrode 4). total current through center electrode, half value through tip respectively ring electrode dimensions ( unit: mm ) electrical characteristics recommended p ad o utline
3-electrode gas discharge tube (gdt) revision march 6, 2014 3 / 4 @socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. un3e5 series socay electronics co., ltd. www.socay.com item test condition / description requirement dc spark-over voltage the voltage is measured with a slowly rate of rise dv / dt=100v/s impulse spark-over voltage the maximum impulse spark-over voltage is measured with a rise time of dv / dt=100v// s or 1kv/ s insulation resistance the resistance of gas tube shall be measured each terminal each other terminal , please see above spec. capacitance the capacitance of gas tube shall be measured each terminal to each other terminal. test frequency :1mhz nominal impulse discharge current the maximum current applying a waveform of 8/20 s that can be applied across the terminals of the gas tube. one hour after the test is completed, re-testing of the dc spark-over voltage does not exceed 30% of the nominal dc spark-over voltage. dwell time between pulses is 3 minutes. nominal alternating discharge current rated rms value of ac current at 50hz, 1 sec. 10 times. intervals: 3min. the dc spark-over voltage does not exceed 30% of the nominal dc spark-over voltage. ir > 10 8 ohms. to meet the specified value solder iron temperature: 350 c +/-5 c heating time: 5 seconds max. electrical rating recommended soldering profile w ave soldering soldering profile applied a single process reflow soldering soldering parameters - hand soldering 1.0 0.9 0.5 0.1 0.0 20 sec 30% max t i 8 sec
3-electrode gas discharge tube (gdt) revision march 6, 2014 4 / 4 @socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. un3e5 series socay electronics co., ltd. www.socay.com part number description quantity un3e5-xxxlm 100pcs per tray, 10 trays / inner 1000 un3e5-xxxl 100pcs per tray, 10 trays / inner 1000 100pcs per tray, 10 trays/ inner 1000 un3e5-xxxlsmd 16mmtape & 13 reel 1000 tape and reel dimension (unit: mm) tray dimension (unit: mm) u gas discharge tubes (gdt) must not be operated directly in power supply networks. u gas discharge tubes (gdt) may become hot in case of longer periods of current stress (danger of burning). u gas discharge tubes (gdt) may be used only within their specified values. in the event of overload, the head contacts may fail or the component may be destroyed. u damaged gas discharge tubes (gdt) must not be re-used. part numbering un3e5 C xxx l m m, with wire no, without wire smd, surface mount 8/20 s level l, 5ka nominal dc spark-over voltage 75 = 75v 300=300v 90 =90v 350 =350v 150 = 150v 470 =470v 230 = 230v 600 = 600v series packaging cautions and warnings
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