3rlb-7 series gdt introduction:gas discharge tubes (gdt) use noble gasses enclosed in ceramic tubes to provide an alternate circuit path for voltage spikes.the ceramic envelope and with nickel connectors allow for high load s and ruilon offers products that function at 20ka,40ka,50ka,60ka,100ka&150ka. the breakdown voltages of the devices have a wide range (up to 20% tolerance).major applications are high frequency telecommunication lines,stations, security systems,hid and high quality surge protection devices (spd). product name ? size:11.5mm*7.5mm ? dc spark-over voltage: 75~800v ? stable breakdown voltage. ? high insulation resistance. ? high holdover voltage. ? large absorbing transient current capability. ? low capacitance ? micro-gap design ? cable modem ? xdsl ? set-top box ? satellite and catv equipment ? power supplier ? consumer electronics ? general telecom equipment 3 r x x x x b - 7 stable breakdown voltage 3r : 3 electrodes dc spark-over voltage dimensions 11.5mm*7.5mm electrical characteristics b=10ka lead type l:thrust gas discharge tube features e - t s % unit:mm item dimensions spec. tolerance d 7.5 0.2 t 11.5 0.2 l 15 1 s 4.4 0.2 d 1.0 0.05 applications
electriacl characteristics part number dc spark-over voltage max. impulse breakdown voltage max. impulse discharge current (8/20s) impulse life(10/ 1000s) normal alternating discharge current dc holdover voltage minimum insulation resistance maximum capacitance (1mhz) 100v/s 100v/ s 1kv/s 10 times 100a 50hz,1sec <150ms l series (v) (v) (v) (ka) (times) (a) (v) (g) (pf) 3r075lb-7 7520% 600 700 10 300 10 52 1 2 3r090lb-7 9020% 600 700 10 300 10 52 1 2 3r150lb-7 15020% 500 700 10 300 10 135 1 2 3r200lb-7 20020% 500 700 10 300 10 135 1 2 3r230lb-7 23020% 600 700 10 300 10 150 1 2 3r250lb-7 25020% 600 700 10 300 10 150 1 2 3r350lb-7 35020% 700 800 10 300 10 150 1 2 3R400LB-7 40020% 800 900 10 300 10 150 1 2 3r470lb-7 47020% 900 1000 10 300 10 150 1 2 3r600lb-7 60020% 1000 1100 10 300 10 150 1 2 dc spark-over voltage dc measuring voltage 75-90v 50v 150-400v 100v 420-600v 250v
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