Features n Leadless, surface mount for economical n UL Recognized assembly n RoHS compliant* version available n Compact mini-size n High surge current rating n Low capacitance and insertion loss n Stable breakdown throughout life 2035-xx-SM Precision Gas Discharge Tube Surge Protector Bourns now offers a surface mount (SM) 2-electrode GDT surge protection device. The high quality and outstanding features of the Bourns® miniature 2035 Series GDT continues in this new SM version for ‘pick and place’ manufacturing techniques. The 2035-xx-SM Series is ideal for high-density applications such as PCBs for telecommunications, commercial and industrial applications. Characteristics Test Methods per ITU-T K.12, IEEE C62.31 and IEC 61643-311 GDT standards. Model No. Characteristic 2035-09 2035-15 2035-20 2035-23 2035-25 2035-30 DC Sparkover ±15 % 90 V 150 V 200 V 230 V 250 V 300V (±20 % for Model 2035-09) @ 100 V/s Impulse Sparkover (1) 100 V/µs 350 V 400 V 425 V 450 V 475 V 525 V 1000 V/µs 525 V 550 V 575 V 600 V 625 V 650 V Model No. Characteristic 2035-35 2035-40 2035-42 2035-47 2035-60 DC Sparkover ±15 % @ 100 V/s 350 V 400 V 420 V 470 V 600 V (-12 %, +15 % for Model 2035-60) @ 100 V/s Impulse Sparkover (1) 100 V/µs 600 V 650 V 675 V 750 V 950 V 1000 V/µs 750 V 800 V 850 V 950 V 1100 V (1) Impulse Sparkover voltage is defined as typical values of distribution. Insulation Resistance (IR) ..................100 V (50 V for Model 2035-09) .............................................> 1010 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 (2) .....................>135 V, (52 V for Model 2035-09, ..........................................< 150 ms 80 V for Model 2035-15) Impulse Discharge Current .................10000 A, 8/20 µs (3) .................................................................1 operation minimum 5000 A, 8/20 µs ......................................................................> 10 operations 1000 A, 10/350 µs .................................................................. 1 operation 100 A, 10/1000 µs .................................................................> 300 operations 100 A, 10/700 µs ...................................................................> 500 operations Alternating Discharge Current ............20 Arms, 11 cycles (3) .............................................................. 1 operation minimum 5 Arms, 1 s .............................................................................> 10 operations Operating Temperature ....................................................................................................................... -55 to +85 °C Climatic Category (IEC 60068-1)........................................................................................................ 40/90/21 Notes: • UL Recognized component, UL File E153537 • 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 ±20 % (-25 %, +30 % for Model 2035-09, 2035-60), IR >108. • At delivery AQL 0.65 Level II, DIN ISO 2859. • Bourns recommends reflowing surface mount devices per IPC/JEDEC J-STD-020 rev D. (2) Network applied. (3) Tube may exceed ±20 % but will continue to protect without venting. *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

2035-xx-SM Precision Gas Discharge Tube Surge Protector Product Dimensions Packaging Specifications 4.4 ± 0.2 4.0 (.173 ± .008) (.156) Standard Packaging Quantity Model Bulk(Bag) Tray Box Reel 2035-SM 250 1000 2035-SM-RP 1500 5.0 ± 0.25 20355-.S6M-RP3 1000 (.197 ± .010) 2035(.2-2S0)M-RP4 1000 -RP (.00.2501 ±± .00.014) (.00.1333 ±± .00.014) 4.00 (4.1.0508) Reel is 13 inches in(. 10d.53i0a)meter and 3/4 inch wide. Recommended Pad Layout (2.(0..1075098)) (2.0.0709) (2.(04..107.050908)) (1.0.7659) (1.0.7659) (1.0.7659) 4.4 ± 0.2 4.0 (.173 ± .008) (.156) 16.0 16.0 (.63) 16.0 (.63) 7.5 (.63) (.51.907 ± ± 0 ..02150) (.52.260) (7.3.50) (.30) (7.3.50) 8.00 8.00 (.315) 8.00 (.315) (.315) 0.51 ± 0.1 0.33 ± 0.1 1.3 (.020 ± .004) (.013 ± .004) (.050) -RP3 MM Reel is 13 inches in diameter and 11/16 inch wide. DIMENSIONS: (INCHES) 7.50 12.00 4.00 (.295) 12.00 (.473) 4.00 (.158) 5.30 (.473)12.00 (.145.080) (.209) (.473) (.158) How to Order 2035 - xx( 0.0 .31-54 ±±S 1.0.M2570) - RP LF (2.1.8100) (2.0.0709) (.10.6795 ±± .21.050) 12.00 ± 1.27 Model Number Designator R(0.0.3102)MAX. (1.24.7030 ±± .10.5207)(.473 ± .050) 12.00 ± 1.27 Voltage (.473 ± .050) Surface Mount 5.50 ± 1.27 Packaging Options (.217 ± .050) Blank = Bulk Packaging (Standard) 5.30 -RP4 RP = Reelpack (Optional) (.209) Reel is 13 inches in di1a.1m0eter and 11(/1.01.55609) inch wide. RP3 = Reelpack (Optional) RP4 features the GD(T.0s43 p)laced upsDidIAe. M-dINo.wn inside the carrier tape. RP4 = Reelpack (Optional) 5.00 R o BLHFlaS n= Ck R o=om HSpStal inCadnoatm rOdp plPiatrinootdn Pu crot duct (1.0.9798) (1.0.9798) (1.24.7030)((.5.12.941703))(1.24.7030) (4.1.0508) (4.1.0508) (.10.6795 ±± .21.050)(.10.6795 ±± .21.050) 12.00 ± 1.27 12.00 ± 1.27(.473 ± .050) (.473 ± .050) 5.50 ± 1.27 5.50 ± 1.27(.217 ± .050) (.217 ± .050) MM DIMENSIONS: (INCHES) Unless otherwise specified, tolerances in decimals are .X ± 0.3, .XX ± 0.15 for lengths in millimeters and ±1 ° for degrees. REV. O 08/20 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

Legal Disclaimer Notice This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its affiliates (collectively, “Bourns”). Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change without notice. Users should check for and obtain the latest relevant information and verify that such information is current and complete before placing orders for Bourns® products. The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns® product also can and do vary in different applications and actual performance may vary over time. Users should always verify the actual performance of the Bourns® product in their specific devices and applications, and make their own independent judgments regarding the amount of additional test margin to design into their device or application to compensate for differences between laboratory and real world conditions. Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any failure of an individual Bourns® product to meet the requirements of such industry standard or particular qualification. Users of Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to their devices or applications. Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining ap- plications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or environmental damage. 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