Features Applications Compact size: 5.5 mm diameter, Telecommunications equipment 6 mm length Industrial equipment/electronics Low capacitance Consumer electronics Low leakage RoHS compliant* UL Recognized 2057 Series Light Duty 2-Electrode Miniature Gas Discharge Tube Characteristics Test Methods per ITU-T K.12 and IEC 61643-311. Model No. Characteristic 2057-07 2057-09 2057-12 2057-13 2057-15 2057-23 DC Sparkover 20 % 100 V/s 75 V 90 V 120 V 130 V 150 V 230 V (1) Impulse Sparkover 100 V/s < 700 V < 600 V < 600 V < 600 V < 600 V < 600 V 1000 V/s < 800 V < 700 V < 700 V < 700 V < 700 V < 700 V Model No. Characteristic 2057-25 2057-30 2057-35 2057-40 2057-47 DC Sparkover 20 % 100 V/s 250 V 300 V 350 V 400 V 470 V (1) Impulse Sparkover 100 V/s < 600 V < 700 V < 700 V < 800 V < 900 V 1000 V/s < 700 V < 900 V < 900 V < 1000 V < 1100 V (1) Impulse Sparkover voltage is de ned as typical values of distribution. (2) Insulation Resistance (IR) ....................................50 / 100 / 250 Vdc ................................................. > 1 G Glow Voltage ...........................................................10 mA ..................................................................... ~ 70 V Arc Voltage ..............................................................1 A .......................................................................... ~ 10 V Glow-Arc Transition Current .................................................................................................................... < 1 A Maximum Capacitance ............................................1 MHz ..................................................................... < 1 pF Maximum Impulse Discharge Current .....................10,000 A, 8/20 s .................................................. 1 operation 5,000 A, 8/20 s ..................................................... 10 operations Nominal Alternating Discharge Current ...................5 A, 50 Hz, 1 second .............................................. 1 operation 15 A, 9 cycles ........................................................ 1 operation Impulse Life ............................................................100 A, 10/1000 s .................................................. 300 operations (3) DC Holdover Voltage ........................................................................................................................... < 150 ms Operating Temperature ............................................................................................................................ -40 to +90 C Storage Temperature ............................................................................................................................... -40 to +90 C Climatic Category (IEC 60068-1)............................................................................................................. 40 / 90 / 21 Notes: UL Recognized component, UL File E153537. At delivery AQL 0.65, level II DIN ISO 2859 (2) DC Sparkover Voltage DC Measuring Voltage 7590 V 50 V 120400 V 100 V 470 V 250 V (3) Network Applied DC Sparkover Voltage DC Holdover Voltage 75145 V 52 V 230250 V 80 V 300470 V 150 V *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 performance may vary over time. Users should verify actual device performance in their speci c applications. *RoHS COMPLIANT 2057 Series Light Duty 2-Electrode Miniature Gas Discharge Tube Product Dimensions 0.8 0.05 20 MIN. (.031 .002) (0.78) DIA. LONG 2 PLCS. 5.5 +0.3/-0.5 (.217 + .012/-.020) DIA. MM DIMENSIONS: (INCHES) 6.0 +0.3/-0.5 (.236 +.012/-.020) Packaging Speci cations Model 2057 ships standard bulk, 100 pcs. per tray 5 trays per box (500 units). The optional reelpack (-BT1) contains 500 pcs. per reel 2 reels per box (1K units). 330 4.0 6.0 + 1.4 (12.992 .157) (.236 +.055) DIA. MAX. 1.5 (.059) TYP. 10.0 0.5 (.394 .020) 100.0 (3.937) TYP. 52 2 MM (2.047 .079) DIMENSIONS: 68.0 (INCHES) TYP. (2.677) 64 3 (2.520 .118) How to Order 2057 - xx - B T1 LF Asia-Paci c: Model Number Designator Tel: +886-2 2562-4117 Voltage (Divided by 10) 07 = 75 V 25 = 250 V Fax: +886-2 2562-4116 09 = 90 V 30 = 300 V EMEA: 12 = 120 V 35 = 350 V Tel: +36 88 520 390 13 = 130 V 40 = 400 V 15 = 150 V 47 = 470 V Fax: +36 88 520 211 23 = 230 V The Americas: Leads Tel: +1-951 781-5500 B = 0.8 mm Fax: +1-951 781-5700 Packaging www.bourns.com (Blank) = Bulk Packaging (Standard) T1 = Reelpack (Optional) RoHS Compliancy LF = RoHS Compliant Product REV. B 08/15 Speci cations are subject to change without notice. Customers should verify actual device performance in their speci c applications.