PL IA N T Features Applications CO M ■ Formerly a product *R oH S ■ Igniters for architectural and automotive Xenon discharge lamps ■ Fast switching rate ■ High energy, low loss capability ■ Wide operating temperature range ■ Long service life ■ High insulation resistance ■ Electronic igniters for gas heating and gas domestic appliances, e.g., cookers ■ Ignition of ultra-high pressure gas discharge lamps for data and video projectors ■ RoHS compliant* Sparctube™ Switching Spark Gap ST-0750 Series Description Bourns® Sparctube™ Switching Spark Gap Series is a range of switching spark gaps designed specifically for voltage controlled switching of capacitive discharge circuits where a high energy, low loss, fast rate of switching is required. This series is ideally suited for applications where a capacitive discharge is utilized with a transformer to obtain pulses of very high voltage levels in the order of several thousand volts. Characteristics Initial Values: Static Breakdown Voltage @ 800 V/s 1 First Ignition Values ..............................................................................................................< 900 V Following Ignition Values ......................................................................................................750 V ±12 % Electrical Life: Minimum Number of Switching Cycles .......................................................................................2x105 Peak Current (Approx.)...............................................................................................................450 A Maximum Switching Frequency..................................................................................................200 Hz Breakdown Characteristics @ 950 V Limit First Ignition Values ..............................................................................................................≤ 950 V Delay Time............................................................................................................................< 60 ms Following Ignition Values ......................................................................................................750 V ±15 % General Data: Breakdown Time .........................................................................................................................< 50 ns Insulation Resistance @100 Vdc ...............................................................................................> 100 megohms Maximum Static Breakdown Voltage @ 100 V/ms .....................................................................1250 V Share of Early Ignition Values (< 638 V) ....................................................................................< 1 % Residual Voltage @ 50 ns ..........................................................................................................< 300 V Capacitance................................................................................................................................< 1 pF Operating Temperature Range 2 ................................................................................................-40 °C to +160 °C Storage Temperature Range ......................................................................................................-65 °C to +125 °C Weight (Approx.).........................................................................................................................2.3 g Testing ........................................................................................................................................100 % Robustness of Terminations .......................................................................................................IEC 60068-2-21 3 Notes: 1 At delivery AQL 0.65 Level II, DIN ISO 2859. 2 Distribution of switchings: maximum 20 % above +125 °C and 20 % below +20°C. 3 Test Ua1 (tensile), Ua2 (thrust), Ub (bending) and Uc (torsion). Basic Application Circuit Sparctube™ Switching Spark Gap Device R C LOAD Asia-Pacific: Tel: +886-2 2562-4117 Fax: +886-2 2562-4116 EMEA: Tel: +36 88 520 390 Fax: +36 88 520 211 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 and RoHS Recast 2011/65/EU June 8, 2011. Specifications 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 specific applications. Sparctube™ Switching Spark Gap ST-0750 Series Product Dimensions How to Order ST - 0750 - B x x - STD ST-0750-BLx 8.0 +0.1/-0.3 (.315 +.004/-.012) DIA. CERAMIC INSULATOR Series Designator Switching Voltage 0750 = 750 V METAL ELECTRODE TINNED LEADS Tolerance B = 12 % 1.0 (.039) DIA. Lead Shape B = Bent Leads C = No Leads* L = Straight Leads 5.8 ± 0.3 (.228 ± .012) 60.0 - 82.0 (2.362 - 3.228) Packaging B = Bulk T = Tape & Reel* ST-0750-BCx Standard or Modified Product Indicator STD = Standard 8.0 +0.1/-0.3 (.315 +.004/-.012) DIA. CERAMIC INSULATOR *Leadless version available in bulk packaging only. METAL ELECTRODE Typical Part Marking ST 0750 wwy ...... “wwy” = Week and year of production 5.8 ± 0.3 (.228 ± .012) ST-0750-BBx 5.8 ± 0.3 (.228 ± .012) 8.6 (.339) MAX. 8.0 +0.1/-0.3 (.315 +.004/-.012) DIA. 8.4 (.331) MAX. 1.00 (.039) DIA. 0.20 (.008) APPROX. 0.25 +0.15/-0.05 (.010 +.006/-.002) DIMENSIONS: 2.52 ± 0.20 (.099 ± .008) MM (INCHES) 8.4 (.331) MAX. Test Circuit R Uo L C DUT Us Uo .........1000-1500 V R ...........See Note C ...........100 nF L............0.5 µH DUT ......Device Under Test Us .........Breakdown Voltages NOTE: Uo and R are set to provide suitable conditions for different measurements. Specifications 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 specific applications. Sparctube™ Switching Spark Gap ST-0750 Series Packaging Specifications Models ST-0750-BBB, ST-0750-BLB and ST-0750-BCB* ship standard bulk pack, 1,000 pcs./bag. The optional tape and reel packaging contains 1,000 pcs./reel for Model ST-0750-BLT; 500 pcs./reel for Model ST-0750-BBT. * Available in bulk packaging only. ST-0750-BLT ST-0750-BBT 2.2 ± 0.5 (.087 ± .020) 16.5 ± 0.1 (.650 ± .004) 20.2 ± 1.0 (.795 ± .039) 14.0 +1.0/-0.0 (.551 +.039/-.00) DIA. 100 ± 1.0 (3.937 ± .039) 90.0 ± 2.0 (3.543 ± .079) 13.0 ± 0.2 (.512 ± .008) 90.0 ± 2.0 (3.543 ± .079) 356.0 ± 2.0 (14.016 ± .079) DIA. 330 (12.992) 105.0 (4.134) 4.0 ± 0.1 (.157 ± .004) 2.0 ± 0.1 (.079 ± .004) 12.0 ± 0.1 (.472 ± .004) 12.0 ± 0.1 (.472 ± .004) 1.75 (.069) C B 10.0 ± 1.0 (.394 ± .039) SPACING 7.50 (.295) 6.2 ± 1.0 (.244 ± .039) A 85.0 ± 2.0 (3.346 ± .079) A C B 9.1 +0.2/-0.0 (.358 +.008/-.000) DIMENSIONS: 16.0 (.630) 8.2 +0.2/-0.0 (.323 +.008/-.000) 0.50 ± 0.05 (.020 ± .002) MM (INCHES) SECTION C-C SECTION B-B 8.5 +0.15/-0.05 (.335 +.006/-.002) 9.3 ± 0.1 (.366 ± .004) REV. 04/17/14 “Sparctube” is a registered trademark of Bourns, Inc. in China and the European Community, with a trademark registration application pending in the U.S. Specifications 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 specific applications. SECTION A-A