Features
nꢀ Formerlyꢀaꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀproduct
nꢀ Fastꢀswitchingꢀrate
Applications
nꢀ Ignitersꢀforꢀarchitecturalꢀandꢀautomotiveꢀꢀ
ꢀ
Xenonꢀdischargeꢀlamps
nꢀ Electronicꢀignitersꢀforꢀgasꢀheatingꢀandꢀgasꢀꢀ
domesticꢀappliances,ꢀe.g.,ꢀcookers
nꢀ Ignitionꢀofꢀultra-highꢀpressureꢀgasꢀꢀ
nꢀ Highꢀenergy,ꢀlowꢀlossꢀcapability
nꢀ Wideꢀoperatingꢀtemperatureꢀrangeꢀ
nꢀ Longꢀserviceꢀlife
nꢀ Highꢀinsulationꢀresistance
nꢀ RoHSꢀcompliant*
ꢀ
ꢀ
ꢀ
dischargeꢀlampsꢀforꢀdataꢀandꢀvideoꢀꢀ
projectors
ꢀ
ꢀꢀSparctube®ꢀSwitchingꢀSparkꢀGapꢀST-0840ꢀSeries
Description
Bourns® Sparctube®ꢀSwitchingꢀSparkꢀGapꢀSeriesꢀisꢀaꢀrangeꢀofꢀswitchingꢀsparkꢀgapsꢀdesignedꢀspecificallyꢀforꢀvoltageꢀcontrolledꢀ
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 ..............................................................................................................< 950 V
Following Ignition Values......................................................................................................740 V to 940 V
Electrical Life:
5
Minimum Number of Switching Cycles.......................................................................................2x10
Peak Current ..............................................................................................................................Approx. 450 A
Maximum Switching Frequency..................................................................................................500 Hz
Breakdown Characteristics @ 1000 V Limit
First Ignition Values ..............................................................................................................≤ꢀ1000ꢀV
Delay Time............................................................................................................................< 60 ms
Following Ignition Values......................................................................................................720 V to 960 V
General Data:
Breakdown Time.........................................................................................................................< 50 ns
Insulation Resistance @100 Vdc ...............................................................................................> 100 megohms
Maximum Static Breakdown Voltage @ 100 V/ms.....................................................................1300 V
Share of Early Ignition Values (< 720 V) ....................................................................................< 1 %
Residual Voltage @ 50 ns..........................................................................................................< 300 V
Capacitance................................................................................................................................< 1 pF
2
Operating Temperature Range ................................................................................................-40 °C to +170 °C
Storage Temperature Range ......................................................................................................-65 °C to +125 °C
Weight ........................................................................................................................................Approx. 2.3 g
Testing........................................................................................................................................100 %
3
Robustness of Terminations .......................................................................................................IEC 60068-2-21
Notes:
1
2
3
At delivery AQL 0.65 Level II, DIN ISO 2859.
Distribution of switchings: maximum 20 % above +125 °C and 20 % below +20°C.
Test Ua1 (tensile), Ua2 (thrust), Ub (bending) and Uc (torsion).
Basic Application Circuit
Sparctube®ꢀ
SwitchingꢀSparkꢀGapꢀDevice
Asia-Pacific:
Tel: +886-2 2562-4117
R
Email: asiacus@bourns.com
Europe:
Tel: +36 88 520 390
Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500
Email: americus@bourns.com
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C
www.bourns.com
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.
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