features surface mount for economical assembly high surge current rating low capacitance and insertion loss stable breakdown throughout life 8 mm diameter, 6 mm long ul recognized applications telecommunications industrial electronics commercial electronics automotive, aircraft, military electronics characteristics 2027-xx-sm precision gas discharge tube surge protector *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. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. test methods per itu-t k.12, ieee c62.31 and iec 61643-311 gdt standards. insulation resistance ...................................... 100 v (50 v for models 2027C07-sm & 2027-09-sm) .................................................> 10 10 glow voltage ................................................... 10 ma ......................................................... .......~ 70 v arc voltage ...................................................... > 1a ...................................................................~ 10 v glow-arc transition current ................................................................................................... ....< 0.5 a capacitance..................................................... 1 mhz ......................................................... ......< 1 pf dc holdover voltage (2) .................................. 135 v, (52 v for models 2027-07-sm & 2027-09-sm; 80 v for model 2027-15-sm) ...< 150 ms impulse discharge current .............................. 25000 a, 8/20 s (3) ........................................... 1 operation minimum 10000 a, 8/20 s ...............................................> 10 operations 2500 a, 10/350 s ............................................ 2 operations 500 a, 10/1000 s ............................................> 400 operations 100 a, 10/1000 s or 10/700 s ........................> 1000 operations alternating discharge current ......................... 65 arms, 11 cycles *** ........................................ 1 operation minimum 10 arms, 1 s ......................................................> 10 operations operating temperature ............................................................................................................... -55 to +125 c climatic category (iec 60068-1)................................................................................................ 40/90/21 notes: ?ul recognized component, ul file e153537. ? model number marking on tube: 27-xxxv. ? surface mount (sm) parts may show a temporary increase in dcbd after the solder re? ow process. most devices will recover wit hin 24 hours time. it should be noted that there is no quality defect nor change in protection levels during the temporary change in dcbd . ? sparkover limits 20 % after life, ir >10 8 (-25 %, +30 % for models 2027-07-sm, 2027C09-sm and 2027C60-sm). ? at delivery aql 0.65 level ii, din iso 2859. ? bourns recommends re? owing surface mount devices per ipc/jedec j-std-020 rev d. (2) network applied. (3) dc sparkover may exceed 20 % after discharge, but will continue to protect without venting. characteristic model no. 2027-07-sm 2027-09-sm 2027-15-sm 2027-20-sm 2027-23-sm 2027-25-sm dc sparkover 15 % (20 % for models 2027-07-sm & 2027-09-sm) @ 100 v/s 75 v 90 v 150 v 200 v 230 v 250 v impulse sparkover (1) 100 v/s 1000 v/s 300 v 500 v 300 v 500 v 350 v 575 v 400 v 600 v 450 v 675 v 475 v 700 v bourns offers an 8 x 6 mm surface mount (sm) 2-electrode gdt surge protection device. the industry-leading quality and features of bourns ? 2027 series gdt continue in this new sm version. compatible with pick and place assembly systems, the 2027-sm is ideal for compact applications such as pcbs for telecommunications, commercial and industrial applications. characteristic model no. 2027-30-sm 2027-35-sm 2027-40-sm 2027-42-sm 2027-47-sm 2027-60-sm dc sparkover 15 % @ 100 v/s 300 v 350 v 400 v 420 v 470 v 600 v impulse sparkover (1) 100 v/s 1000 v/s 550 v 800 v 600 v 875 v 650 v 925 v 675 v 950 v 725 v 1000 v 850 v 1100 v *rohs compliant versions available (1) impulse sparkover voltage is de? ned as typical values of distribution.
how to order 2027 - xx - sm - rp lf model number designator voltage (divided by 10) 07 = 75 v 30 = 300 v 09 = 90 v 35 = 350 v 15 = 150 v 40 = 400 v 20 = 200 v 42 = 420 v 23 = 230 v 47 = 470 v 25 = 250 v 60 = 600 v surface mount packaging option blank = bulk packaging (standard) rp = 24 mm reelpack (optional) rp2 = 16 mm reelpack (optional) rp3 = 16 mm reelpack / vertical part alignment in tape (optional) rohs compliant option blank = standard product lf = rohs compliant product speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. 2027-xx-sm precision gas discharge tube surge protector product dimensions recommended pad layout 8.00 0.20 (.315 .008) 7.6 (.299) 4.6 (.181) 1.5 (.059) 8.6 (.339) 6.4 0.30 (.252 .012) dia. 0.42 0.02 (.017 .001) 0.76 0.08 (.030 .003) 7.50 0.20 (.295 .008) model standard packaging quantity bulk (bag) tray box reel 2027-xx-sm 250 1000 2027-xx-sm-rp 500 2027-xx-sm-rp2 500 packaging speci cations
dimensions: mm (inches) packaging speci cations (continued) the optional reelpacks (-rp, -rp2, -rp3) are 33 cm in diameter and 3 cm wide. -rp -rp2 speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. 2027-xx-sm precision gas discharge tube surge protector rev. 07/15 -rp3 0.76 (.030) r r 7.95 (.374) 8.41 (.331) 9.51 (.374) 4.00 (0.157) .36 (.014) 3.20 (.126) 16.00 (.630) 6.85 (.270) 5.19 (.204) 6.85 (.270) 0.95 (.037) a a section a-a 8.48 (0.334) 0.41 0.10 (0.02 0.004) 8.08 (0.32) 33 7 16.00 (0.630) 4.00 (0.157) 2.00 (0.079) 1.50 (0.059) dia. 1.75 (0.07) 24.0 (0.94) 11.5 (0.45) 8.48 (0.334) part orientation in tape 7.11 (0.28) 7.51 (0.296) 8.40 (.331) 0.40 0.05 (.016 .002) 5.10 (.201) 7.9 (.311) 9.5 (.374) r 0.5 (.020) typ. dia. 1.50 +0.1/-0.0 (.059 +.004/-.000) dia. 1.50 +0.1/-0.0 (.059 +.004/-.000) 16.0 0.3 (.630 .012) 7.50 0.1 (.295 .004) 1.75 0.1 (.069 .004) 4.00 0.20 (.157 .008) 2.00 0.10 (.079 .004) 12.00 (.473) part orientation in tape part orientation in tape unless otherwise speci ed, tolerances in decimals are .x ?0.3, .xx ?0.15 for lengths in millimeters and ? ?for degrees.
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