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-0400ꢀSeries
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 ..............................................................................................................< 500 V
Following Ignition Values......................................................................................................400 V ±12 %
Electrical Life:
5
Minimum Number of Switching Cycles.......................................................................................2x10
Peak Current (Approx.)...............................................................................................................500 A
Maximum Switching Frequency..................................................................................................200 Hz
2
Breakdown Characteristics @ 500 V Limit
First Ignition Values ..............................................................................................................≤ꢀ500ꢀV
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.
The maximum switching frequency is 100 Hz at circuit capacitance >470 nF ~ 680 nF.
Distribution of switchings: maximum 20 % above +125 °C and 20 % below +20°C.
Test Ua1 (tensile), Ua2 (thrust), Ub (bending) and Uc (torsion).
2
3
4
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
LOAD
C
Email: americus@bourns.com
www.bourns.com
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.