PL IA NT CO M *R oH S Features Applications Compact size MDC / PCI modems Low capacitance Splitters Performance stability over life Telecom CPE High insulation resistance Datacom RoHS compliant* UL Recognized 2051 Series Gas Discharge Tube Surge Protector Bourns(R) 2051 Series micro surface mount, 2-electrode GDT surge protection device is designed to meet board level protection requirements with reduced space requirements. The 2051 Series is ideal for high-speed/high-bandwidth applications with a typical capacitance of 0.6 pF. The 2051 Series product dimensions are 2.7 x 3.2 x 4.5 mm. Characteristics Test Methods per ITU-T (CCITT) K.12 and IEEE C62.31 Characteristic DC Sparkover @ 100 V/s Impulse Sparkover 100V/s 1000V/s Characteristic DC Sparkover @ 100 V/s Impulse Sparkover 100V/s 1000V/s Model No. 2051-09 2051-15 2051-20 2051-23 2051-30 90 V 30 % 150 V 30 % 200 V 25 % 230 V 25 % 300 V 25 % <500 V <600 V <500 V <600 V <500 V <650 V <500 V <650 V <600 V <750 V 2051-35 2051-40 2051-42 2051-47 2051-60 350 V 25 % 400 V 25 % 420 V 25 % 470 V 25 % 600 V 25 % <650 V <800 V <750 V <900 V <750 V <900 V <800 V <950 V <950 V <1100 V Model No. Insulation Resistance (IR) ............................... 50 / 100 Vdc ......................................................> 1G Glow Voltage ................................................... 10 mA................................................................~ 70 V Arc Voltage ...................................................... 1 A .....................................................................~ 10 V Glow-Arc Transition Current .......................................................................................................< 1 A Capacitance..................................................... 1 MHz ...............................................................< 1 pF Impulse Discharge Current .............................. 2000 A, 8/20 s .................................................10 operations 100 A, 8/20 s ...................................................300 operations 10 A, 10/1000 s ...............................................100 operations Alternating Discharge Current ......................... 2 A, 50 Hz, 1 sec ...............................................10 operations Operating & 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. Asia-Pacific: Tel: +886-2 2562-4117 * Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 * Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 * Fax: +1-951 781-5700 www.bourns.com *RoHS Directive 2002/95/EC Jan 27, 2003 including Annex. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 2051 Series Gas Discharge Tube Surge Protector Product Dimensions Recommended Pad Layout 0.5 0.1 (0.020 0.004) 1.5 (0.059) 2.7 0.3 (0.106 0.012) 4.2 (0.165) 4.5 0.3 (0.177 0.012) 3.2 0.3 (0.126 0.012) Packaging Specifications How to Order The Model 2051-xx-SM ships standard reelpack (-RP), 2500 pieces per reel. Reel is 330 mm in diameter and 14 mm wide. DIA. 1.55 0.05 (0.061 0.002) 3.0 (0.118) 4.0 0.1 (0.157 0.004) 1.75 0.1 (0.069 0.004) 5.45 0.1 (0.215 0.004) Model Number Designator Voltage (Divided by 10) 09 = 90 V 35 = 350 V 15 = 150 V 40 = 400 V 20 = 200 V 42 = 420 V 23 = 230 V 47 = 470 V 30 = 300 V 60 = 600 V Surface Mount Packaging RP = Reelpack (2,500 pieces per reel) 12.0 0.3 (0.472 0.012) 8.0 0.1 (0.315 0.004) 2051 - xx - SM - RP LF RoHS Compliancy LF = RoHS Compliant Product 0.4 0.1 (0.016 0.004) 3.1 0.1 (0.122 0.004) 330 (12.992) DIA. 1.5 (0.059) MIN. 100.0 (3.937) TYP. 14.0 TYP. (0.551) DIMENSIONS: MM (INCHES) REV. B 10/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.