features balanced mini-trigard? (5 mm diameter, 7.5 mm length) ideal for board level protection of broadband circuits symmetrical breakdown voltage (l-l, l-g) leadless, surface mount for economical assembly high surge current rating, low insertion loss stable breakdown throughout life rohs compliant* versions available characteristics 2038 series miniature symmetrical 3-electrode surface mount gas discharge tube *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications. test methods per itu-t (ccitt) k.12 and ieee c62.31 impulse transverse delay ............................... 100 v/? ............................................................< 50 ns insulation resistance (ir) ............................... 100 v ............................................................... .> 10 9 glow voltage ................................................... 10 ma ......................................................... .......~ 70 v arc voltage ...................................................... 1 a ......................................................... ............~ 10 v glow-arc transition current ................................................................................................... ....< 0.5 a capacitance..................................................... 1 mhz ...............................................................< 1 pf dc holdover voltage (note 2) ......................... 135 v (80 v for model 2038-15) .......................< 150 ms impulse discharge current .............................. 10000 a, 8/20 ? (note 3) .................................1 operation min. 5000 a, 8/20 ? .................................................> 10 operations 200 a, 10/1000 ? .............................................> 300 operations 200 a, 10/700 ? ..............................................> 500 operations 10 a, 10/1000 ? ..............................................> 1500 operations alternating discharge current ......................... 10 arms, 1 s (note 3) ........................................1 operation min. 5 arms, 1 s ........................................................> 10 operations operating temperature ............................................................................................................... -40 to +90 ? climatic category (iec 60068-1)................................................................................................ 40/90/21 notes: ?2038-35 ul recognized , le e153537, 2038-110 csa approved , le lr93265 (ul 1449). ?the rated discharge current for mini-trigard gdts is the total current equally divided between each line to ground. ?surface mount (sm) parts may show a temporary increase in dcbd after the solder re ow process. most devices will recover within 24 hours time. it should be noted that there is no quality defect nor change in protection levels during the temporar y change in dcbd. ?sparkover limits after life ?0 %. ir >10 8 . ?operating characteristics per rus pe-80 and telcordia gr 1361 available on request. ?at delivery aql 0.65 level ii, din iso 2859. 1 line to line dc sparkover tolerance typically less than +30 % at 100 v/s. 2 network applied. 3 dc sparkover may exceed ?0 % but will continue to protect without venting. characteristic model no. 2038-15-sm 2038-20-sm 2038-23-sm 2038-30-sm 2038-35-sm dc sparkover ?25 % @ 100 v/s l1/l2 to gnd (note 1) 150 v 200 v 230 v 300 v 350 v typical impulse sparkover l1/l2 to gnd 100v/s 1000v/s 350 v 500 v 425 v 575 v 450 v 600 v 500 v 650 v 600 v 750 v bourns offers a symmetrical surface mount (sm) 3-electrode gdt surge protection device. the industry-leading quality and features of the bourns miniature-trigard tm series gdt continue in the 2038 symmetrical version. the 2038 series is ideal for board level protection of high bandwidth applications such as xdsl, cable broadband and high speed ethernet, due to its symmetrical turn on characteristi cs as well as high energy-handling capability, long and stable life performance and low capacitance of less than 1 pf. the 2038 series breakdown voltages are nearly equal line to line as well as line to ground. bourns gas discharge tubes (gdt) are designed to prevent damage from transient disturbances by acting as a ?rowbar?in creating a virt ual short-to-ground circuit during conduction. when an elect rical surge exceeds the de ned breakdown voltage level of the gdt, the gas becomes ionized and rapid conduction takes place. when the surg e passes and the system voltage returns to normal levels, the gdt returns to its high-impedance (off) state. characteristic model no. 2038-42-sm 2038-47-sm 2038-60-SM 2038-80-sm 2038-110-sm dc sparkover ?25 % @ 100 v/s l1/l2 to gnd (note 1) 420 v 470 v 600 v 800 v 1100 v typical impulse sparkover l1/l2 to gnd 100v/s 1000v/s 675 v 850 v 750 v 950 v 850 v 1100 v 1150 v 1400 v 1500 v 1700 v *rohs compliant versions available
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 2038 series miniature symmetrical 3-electrode surface mount gas discharge tube product dimensions how to order 2038 - xx - sm - rp lf model number designator voltage (divided by 10) surface mount packaging options* blank = bulk packaging (standard) rp = reelpack - 1000 pcs./reel (optional) rp2 = reelpack - 1000 pcs./reel (optional) rohs compliant option blank = standard product lf = rohs compliant product *the optional -rp & -rp2 reelpacks contain 1000 pcs./reel. the reels are 330 mm (13 inches) in diameter. the -rp reelpack is 18 mm (0.71 inches) wide. the -rp2 reelpack is 26 mm (1.02 inches) wide. recommended pad layout dimensions: mm (inches) dia. 7.5 (.298) 1.3 (.054) 0.53 (.021) 0.53 (.021) 5.0 (.197) 5.0 (.197) dia. 4.8 (.189) 1.6 (.063) 5.6 (.220) 3.3 (.130) 8.2 (.323)
packaging speci cations the model 2038-xx-sm ships standard bulk pack, 100 pieces per bag. the optional -rp & -rp2 reelpacks contain 1000 pcs./reel. the reels are 330 mm (13 inches) in diameter. the -rp reelpack is 18 mm (0.71 inches) wide. the -rp2 reelpack is 26 mm (1.02 inches) wide. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 2038 series miniature symmetrical 3-electrode surface mount gas discharge tube -rp -rp2 4.0 (.158) 2.0 (.079) .41 (.016) 3 3 4.0 (.158) 12.0 (.472) 2.0 (.079) 3.15 ?0.10 (.124 ?.004) 5.70 ?0.10 (.225 ?.004) 9.35 ?0.10 (.368 ?.004) 4.35 ?0.10 (.171 ?.004) 7.85 ?0.10 (.309 ?.004) 14.90 ?0.10 (.587 ?.004) 12.0 (.472) a section a-a a 16.0 (.63) 5.50 ?0.10 (.217 ?.004) .13 (.005) tolerances: unless otherwise noted 1.7 (.067) 1.50 (.059) dia. 1.50 (.059) dia. 7.5 (.30) 22.25 (.876) 1.75 (.069) 11.50 (.453) 24.00 (.945) dimensions: mm (inches) rev. i 1 2/12
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