*R oH VE S CO AV R M AI SIO PL LA N IA BL S NT E Features ■ Balanced Mini-TRIGARD™ ■ High surge current rating, low insertion loss (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 ■ Stable breakdown throughout life ■ RoHS compliant* versions available 2038 Series Miniature Symmetrical 3-Electrode Surface Mount Gas Discharge Tube Bourns offers a symmetrical surface mount (SM) 3-electrode GDT surge protection device. The industry-leading quality and features of the Bourns® miniature-TRIGARDTM 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 characteristics 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 “crowbar” in creating a virtual short-to-ground circuit during conduction. When an electrical surge exceeds the defined breakdown voltage level of the GDT, the gas becomes ionized and rapid conduction takes place. When the surge passes and the system voltage returns to normal levels, the GDT returns to its high-impedance (off) state. Characteristics Test Methods per ITU-T (CCITT) K.12 and IEEE C62.31 Characteristic DC Sparkover ± 25 % @ 100 V/s L1/L2 to Gnd (NOTE 1) Typical Impulse Sparkover L1/L2 to Gnd 100V/μs 1000V/μs Characteristic DC Sparkover ± 25 % @ 100 V/s L1/L2 to Gnd (NOTE 1) Typical Impulse Sparkover L1/L2 to Gnd 100V/μs 1000V/μs Model No. 2038-15-SM 2038-20-SM 2038-23-SM 2038-30-SM 2038-35-SM 150 V 200 V 230 V 300 V 350 V 350 V 500 V 425 V 575 V 450 V 600 V 500 V 650 V 600 V 750 V 2038-42-SM 2038-47-SM 2038-60-SM 2038-80-SM 2038-110-SM 420 V 470 V 600 V 800 V 1100 V 675 V 850 V 750 V 950 V 850 V 1100 V 1150 V 1400 V 1500 V 1700 V Model No. Impulse Transverse Delay ............................... 100 V/µs............................................................< 50 ns Insulation Resistance (IR) ............................... 100 V ................................................................> 109 Ω 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 µs (NOTE 3) .................................1 operation min. 5000 A, 8/20 µs .................................................> 10 operations 200 A, 10/1000 µs .............................................> 300 operations 200 A, 10/700 µs ..............................................> 500 operations 10 A, 10/1000 µs ..............................................> 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 °C Climatic Category (IEC 60068-1)................................................................................................ 40/90/21 Notes: • 2038-35 UL Recognized , file E153537, 2038-110 CSA Approved , file 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 reflow 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 temporary change in DCBD. • Sparkover limits after life ±30 %. IR >108 Ω. • 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 ±30 % but will continue to protect without venting. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 2038 Series Miniature Symmetrical 3-Electrode Surface Mount Gas Discharge Tube Product Dimensions Recommended Pad Layout 7.5 (.298) 1.6 (.063) 1.3 (.054) 5.0 (.197) DIA. 5.6 (.220) 5.0 (.197) 4.8 (.189) DIA. 0.53 (.021) 0.53 (.021) 3.3 (.130) 8.2 (.323) DIMENSIONS: How to Order MM (INCHES) 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. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 2038 Series Miniature Symmetrical 3-Electrode Surface Mount Gas Discharge Tube Packaging Specifications 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. -RP 4.0 (.158) 2.0 (.079) 1.7 (.067) 16.0 (.63) 7.5 (.30) 12.0 (.472) -RP2 1.75 (.069) 2.0 (.079) 4.0 (.158) 12.0 (.472) 1.50 DIA. (.059) A 11.50 (.453) 24.00 (.945) 3° 22.25 (.876) 1.50 (.059) DIA. 3° 4.35 ± 0.10 (.171 ± .004) A 3.15 ± 0.10 (.124 ± .004) 5.70 ± 0.10 (.225 ± .004) 9.35 ± 0.10 (.368 ± .004) 5.50 ± 0.10 (.217 ± .004) DIMENSIONS: MM (INCHES) TOLERANCES: REV. I 12/12 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. .13 UNLESS OTHERWISE NOTED (.005) .41 (.016) 7.85 ± 0.10 (.309 ± .004) 14.90 ± 0.10 (.587 ± .004) SECTION A-A