Features
Applications
■ Formerly a
product
■ Igniters for architectural and automotive
Xenon discharge lamps
■ 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
■ Fast switching rate
■ High energy, low loss capability
■ Wide operating temperature range
■ Long service life
■ High insulation resistance
■ RoHS compliant*
ST-0350 Series Sparctube™ Switching Spark Gap
Description
®
™
Bourns Sparctube 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:
1
Static Breakdown Voltage @ 800 V/s
First Ignition Values ..............................................................................................................< 450 V
Following Ignition Values......................................................................................................350 V 1ꢀ ꢁ
Electrical Life:
5
Minimum Number of Switching Cycles.......................................................................................ꢀx10
Peak Current (Approx.)...............................................................................................................500 A
Maximum Switching Frequency..................................................................................................ꢀ00 Hz
Breakdown Characteristics @ 450 V Limit
First Ignition Values ..............................................................................................................≤ 450 V
Delay Time............................................................................................................................< 60 ms
Following Ignition Values......................................................................................................350 V 15 ꢁ
General Data:
Breakdown Time.........................................................................................................................< 50 ns
Insulation Resistance @100 Vdc ...............................................................................................> 100 megohms
Share of Early Ignition Values (< ꢀ98 V) ....................................................................................< 1 ꢁ
Capacitance................................................................................................................................< 1 pF
ꢀ
Operating Temperature Range ................................................................................................-40 °C to +160 °C
Storage Temperature Range ......................................................................................................-65 °C to +1ꢀ5 °C
Weight (Approx.).........................................................................................................................ꢀ.3 g
Testing........................................................................................................................................100 ꢁ
3
Robustness of Terminations .......................................................................................................IEC 60068-ꢀ-ꢀ1
Notes:
1
At delivery AQL 0.65 Level II, DIN ISO ꢀ859.
ꢀ
Distribution of switchings: maximum ꢀ0 ꢁ above +1ꢀ5 °C and ꢀ0 ꢁ below +ꢀ0°C.
3
Test Ua1 (tensile), Uaꢀ (thrust), Ub (bending) and Uc (torsion).
Basic Application Circuit
Sparctube™
Switching Spark Gap
R
Asia-Pacific:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
LOAD
C
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.
Customers should verify actual device performance in their specific applications.