Features Applications Formerly a product Igniters for architectural and automotive Xenon discharge lamps Fast switching rate Electronic igniters for gas heating and gas High energy, low loss capability domestic appliances, e.g., cookers Wide operating temperature range Ignition of ultra-high pressure gas Long service life discharge lamps for data and video High insulation resistance projectors RoHS compliant* Sparctube Switching Spark Gap ST-0400 Series Description Bourns Sparctube Switching Spark Gap Series is a range of switching spark gaps designed speci cally 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: 1 Static Breakdown Voltage 800 V/s First Ignition Values ..............................................................................................................< 500 V Following Ignition Values ......................................................................................................400 V 12 % Electrical Life: 5 Minimum Number of Switching Cycles .......................................................................................2x10 Peak Current (Approx.)...............................................................................................................500 A 2 Maximum Switching Frequency..................................................................................................200 Hz Breakdown Characteristics 500 V Limit First Ignition Values .............................................................................................................. 500 V Delay Time ............................................................................................................................< 60 ms Following Ignition Values ......................................................................................................400 V 15 % General Data: Insulation Resistance 100 Vdc ...............................................................................................> 100 megohms Share of Early Ignition Values (< 340 V) ....................................................................................< 1 % Breakdown Time .........................................................................................................................< 50 ns Capacitance................................................................................................................................< 1 pF 3 Operating Temperature Range ................................................................................................-40 C to +160 C Storage Temperature Range ......................................................................................................-65 C to +125 C Weight (Approx.) .........................................................................................................................2.3 g Testing ........................................................................................................................................100 % 4 Robustness of Terminations .......................................................................................................IEC 60068-2-21 Notes: 1 At delivery AQL 0.65 Level II, DIN ISO 2859. 2 The maximum switching frequency is 100 Hz at circuit capacitance >470 nF ~ 680 nF. 3 Distribution of switchings: maximum 20 % above +125 C and 20 % below +20C. 4 Test Ua1 (tensile), Ua2 (thrust), Ub (bending) and Uc (torsion). Basic Application Circuit Sparctube Asia-Paci c: Switching Spark Gap Device Tel: +886-2 2562-4117 R Fax: +886-2 2562-4116 EMEA: Tel: +36 88 520 390 Fax: +36 88 520 211 The Americas: LOAD C 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. 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 Sparctube Switching Spark Gap ST-0400 Series Product Dimensions How to Order ST-0400-BLx ST - 0400 - B x x - STD 8.0 +0.1/-0.3 Series CERAMIC INSULATOR (.315 +.004/-.012) Designator DIA. METAL ELECTRODE Switching Voltage TINNED LEADS 0400 = 400 V Tolerance 1.0 B = 12 % (.039) Lead Shape 5.8 0.3 DIA. B = Bent Leads (.228 .012) C = No Leads* 60.0 - 82.0 L = Straight Leads (2.362 - 3.228) Packaging B = Bulk ST-0400-BCx T = Tape & Reel* Standard or Modi ed Product Indicator 8.0 +0.1/-0.3 STD = Standard (.315 +.004/-.012) CERAMIC INSULATOR DIA. *Leadless version available in bulk packaging METAL ELECTRODE only. Typical Part Marking 5.8 0.3 ST 0400 wwy ...... wwy = Week and (.228 .012) year of production ST-0400-BBx Recommended Pad Layout 8.6 (.339) 9.6 MAX. 5.8 0.3 (.38) 8.0 +0.1/-0.3 (.228 .012) (.315 +.004/-.012) DIA. 8.4 8.6 (.331) (.34) 1.00 MAX. (.039) DIA. 4.5 2.52 0.20 0.25 +0.15/-0.05 0.20 (.18) (.099 .008) (.010 +.006/-.002) 8.4 (.008) APPROX. (.331) MAX. MM DIMENSIONS: (INCHES) Test Circuit RL Uo .........500 V R ...........See Note C ...........470 nF L ............0.5 H Uo C DUT Us DUT ......Device Under Test Us .........Breakdown Voltages NOTE: Uo and R are set to provide suitable conditions for different measurements. 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.