DC Breakdown
Series Voltage Units
TG
Two .2-60.0 kV
Electrode
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Applications
Features Description
Voltage Range Ordering Information
Test equipment
Video displays
Pulse generators
Medical electronics
Tight DC breakdown voltage tolerance (+ 10%)
Long-life tungsten or molybdenum electrodes
Rugged ceramic-to-metal or glass-to-metal
construction
High Energy Devices’ TG Legacy Series of two
electrode sparkgaps excel in applications that require
the efficient transfer of high voltage, high energy
pulses and DC overvoltage protection for magnetrons,
diodes, capacitors, etc.
A complete part number is represented by the
information contained in the Part Number column of
the specification table.
Devices in the TG Two Electrode Legacy Series with other breakdown
voltages in the .2-60.0kV range are available upon request. Also refer to the
SB/SG Series Spark Gaps for additional product availability.
TG Two Electrode Legacy Series
Spark Gaps
(1) 6-32 tapped hole in non-tubulated end.
(2) Identical tubulation on both ends.
(3) The voltage level at which the spark discharge occurs when a unipolarity pulse train is applied to the gap. Typically, the pulse repetition rate is 400 pps
(pulses/second) with a rise time of 0.3 µs and a pulse width of 0.5 µs. The “initial” range specifies at what increasing voltage the gap begins to fire and
the “rep” range specifies at what decreasing voltage the gap ceases to fire repetitively.
(4) Pulse repetition rate is 1500pps instead of the standard 400pps.
(5) Though outlines 2, 3, and 3A are identical, the electrode materials and configurations vary internally.
(6) Though outlines 4 and 4A are identical, gaps with outline 4A have heavier internal construction to withstand more severe shock and vibration.
Initial Repetitive
DC Breakdown Pulse Pulse
Part Voltage Breakdown Breakdown Package Dimension A Dimension B Dimension C
Number (kV ± 10%) Voltage (kV)(3) Voltage (kV)(3) Outline (Inches) (Inches) (Inches)
TG6 2.50 - - 1 0.620 max 0.455 ± .031 0.188 max
TG8(1) 2.50 - - 1 0.620 max 1.000 ± .031 0.125 max
TG9 3.00 - - 1 0.620 max 0.460 ± .031 0.188 max
TG14 12.50 19.0 - 28.0 17.0 - 21.0 2 - - -
TG15(1) 3.00 - - 1 0.620 max 1.000 ± .031 0.125 max
TG16(1) 3.00 - - 1 0.620 max 1.000 ± .031 0.125 max
TG17 2.60 - - 1 0.620 max 0.455 ± .031 0.188 max
TG19(2) 2.20 - - 1 0.620 max 0.455 ± .031 0.275 ± .075
TG20A 21.00 17.0 - 24.0 - 7 2.250 ± .125 - -
TG22 1.00 - - 1 0.620 max 0.435 ± .031 0.188 max
TG24 15.50 35.5 max - 2 - - -
TG25 0.40 - - 1 0.600 ± .030 1.100 ± .031 0.250 max
TG26A 0.75 - - 2 - - -
TG27A 1.00 - - 2 - - -
TG28A 1.25 - - 2 - - -
TG29 1.50 - - 2 - - -
TG30 2.00 - - 2 - - -
TG31 2.50 - - 2 - - -
TG32 3.00 - - 2 - - -
TG33 4.00 - - 2 - - -
TG34 5.00 - - 2 - - -
TG35 6.00 - - 2 - - -
TG36 8.00 - - 2 - - -
TG37 10.00 - - 2 - - -
TG38 12.50 - - 2 - - -
TG39 15.00 - - 2 - - -
TG40 17.50 - - 2 - - -
TG41A 0.75 - - 3 - - -
TG42A 1.00 - - 3 - - -
TG43A 1.25 - - 3 - - -
TG44 1.50 - - 3 - - -
TG45 2.00 - - 3 - - -
TG46 2.50 - - 3 - - -
TG47 3.00 - - 3 - - -
TG48 4.00 - - 3 - - -
TG49 5.00 - - 3 - - -
TG50 6.00 - - 3 - - -
TG51 8.00 - - 3 - - -
TG52 10.00 - - 3 - - -
TG53 12.50 - - 3 - - -
TG54 15.00 - - 3 - - -
TG55 17.50 - - 3 - - -
TG56 20.00 - - 4 3.750 ± .125 - -
TG57 25.00 - - 4 3.750 ± .125 - -
TG58 30.00 - - 4 4.000 ± .188 - -
TG59 40.00 - - 4 4.250 ± .188 - -
TG60 50.00 - - 4 4.500 ± .188 - -
Specifications (@250C)
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TG Two Electrode Legacy Series
(1) 6-32 tapped hole in non-tubulated end.
(2) Identical tubulation on both ends.
(3) The voltage level at which the spark discharge occurs when a unipolarity pulse train is applied to the gap. Typically, the pulse repetition rate is 400 pps
(pulses/second) with a rise time of 0.3 µs and a pulse width of 0.5 µs. The initial range specifies at what increasing voltage the gap begins to fire and
the rep range specifies at what decreasing voltage the gap ceases to fire repetitively.
(4) Pulse repetition rate is 1500pps instead of the standard 400pps.
(5) Though outlines 2, 3, and 3A are identical, the electrode materials and configurations vary internally.
(6) Though outlines 4 and 4A are identical, gaps with outline 4A have heavier internal construction to withstand more severe shock and vibration.
Initial Repetitive
DC Breakdown Pulse Pulse
Part Voltage Breakdown Breakdown Package Dimension A Dimension B Dimension C
Number (kV ± 10%) Voltage (kV)(3) Voltage (kV)(3) Outline (Inches) (Inches) (Inches)
TG61 0.75 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG62 1.00 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG63 1.25 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG64 1.50 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG65 2.00 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG66 2.50 - - 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG67 3.00 - - 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG68 4.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG69 5.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG70 6.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG71 8.00 - - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG72 10.00 - - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG73 12.50 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG74 15.00 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG75 17.50 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG76 0.40 ± 0.05 - - 1 0.600 ± .030 0.494 ± .031 0.250 max
TG77 - 9.0 - 11.5 9.0 - 11.5 special - - -
TG78 1.00 - - 1A 0.620 max 0.425 ± .031 -
TG79 2.50 - - 2 - - -
TG82 15.00 15.0 - 19.0 13.0 - 18.0 7A 0.950 ± .050 - -
TG83 16.50 16.0 - 22.0(4) 16.0 - 22.0(4) 2---
TG84 30.00 31.0 - 43.0(4) 31.0 - 43.0(4) 4 4.000 ± .188 - -
TG85 15.00 9.0 - 11.5 9.0 - 11.5 special - - -
TG86 0.60 - - 1A 0.620 max 0.537 ± .031 -
TG87 0.80 - - 1A 0.620 max 0.537 ± .031 -
TG89(2) 2.90 - - 1 0.620 max 0.460 ± .031 0.188 max
TG90 20.00 17.0 - 24.0 - special - - -
TG98 0.345 ± .045 - - 3A - - -
TG99 2.75 ± 0.25 - - 2 - - -
TG100 38.00 - - 4 4.000 ± .188 0.440 ± .031 0.188 max
TG102 1.25 - - 1A 0.620 max 0.440 ± .031 0.188 max
TG103 1.50 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG104 2.00 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG105 2.50 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG106 3.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG107 3.50 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG108 4.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG109 5.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG110 0.40 - - 1A 0.620 max - -
TG112 2.20 ± 0.10 - - 1 0.620 max 0.455 ± .031 0.275 ± .075
TG115 13.00 ± 1.00 - - 3 - - -
TG116(6) 25.00 - - 4A 3.750 ± .125 - -
TG117 21.00 17.0 - 24.0 - 7 2.000 ± .125 - -
TG118 21.50 16.0 - 22.0 - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG119 45.00 - - 4 4.250 ± .188 - -
TG120 8.00 7.4 - 8.7 - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG Two Electrode Legacy Series
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Specifications (@250C)
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TG Two Electrode Legacy Series
Initial Repetitive
DC Breakdown Pulse Pulse
Part Voltage Breakdown Breakdown Package Dimension A Dimension B Dimension C
Number (kV ± 10%) Voltage (kV)(3) Voltage (kV)(3) Outline (Inches) (Inches) (Inches)
TG131 30.00 33.0 25.0 4A 4.000 ± .188 - -
TG132 2.00 - - special - - -
TG133 9.00 9.0 - 11.5 9.0 - 11.5 7A 0.192 ± .010 - -
TG135 2.00 - - special - - -
TG139 0.50 - - 1A 0.487 ± .031 - -
TG140 0.60 - - 3A - - -
TG148 6.00 7.5 6.0 special - - -
TG149 2.00 - - 9 0.620 max 0.219 max -
TG152 0.50 - - special - - -
TG153 0.38 ± 0.02 - - 1A 0.487 ± .031 - -
TG155 1.40 - - 2 - - -
TG156 2.625 ± 0.125 - - 1 0.620 max 1.000 ± .031 0.188 max
TG157 1.20 - - 9 0.515 max 0.125 max -
TG160 13.13 ± 0.63 - - 2 - - -
TG161 1.58 ± 0.08 - - 2 - - -
TG162 21.00 ± 1.00 - - 4 3.750 ± .125 - -
TG163 31.50 ± 3.00 - - 4 4.000 ± .188 - -
TG166 0.40 - - 9 0.515 max 0.125 max -
TG167 0.60 - - 9 0.515 max 0.125 max -
TG168 0.80 - - 9 0.515 max 0.125 max -
TG169 1.00 - - 9 0.515 max 0.125 max -
TG171 3.00 - - 9 0.620 max 0.219 max -
TG172 3.50 - - 9 0.620 max 0.219 max -
TG173 4.00 - - 9 0.620 max 0.219 max -
TG174 5.00 - - 9 0.620 max 0.219 max -
TG175 6.00 6.0 - 7.5 6.0 - 7.5 9 0.620 max 0.219 max -
TG176 6.00 - - 7 2.25 ± .125 - -
TG183 35.00 - - 4 4.000 ± .188 - -
TG184(5) 7.00 - - 3A - - -
TG186 20.50 ± 1.50 - - 4 3.750 ± .125 - -
TG187 1.50 - - 3 - - -
TG188(1) 0.60 - - 1 0.620 max 1.000 ± .031 max 0.188 max
TG189 0.50 - - 9 0.515 max 0.125 nom -
TG191(2) 0.45 - - 1 0.620 max 0.455 ± .031 0.275 ± .075
TG192 31.00 ± 3.0 28.0 - 39.0 - 4 4.000 ± .188 - -
TG193 2.30 - - special - - -
TG194 60.00 ± 8.0 - - 4 4.500 ± .188 - -
TG196 9.00 9.0 - 11.5 9.0 - 11.5 7A 0.500 ± 0.30 - -
TG197 18.375 ± 0.875 - - 2 - - -
TG198(1) 1.60 - - 1 0.620 max 1.000 ± .031 0.125 max
TG249 0.18 ± 0.05 - - 1A 0.450 ± .031 - -
TG359 0.345 ± 0.45 - - special - - -
TG366A 14.00 - - special - - -
TG373 21.00 - - special - - -
TG375 20.5 - 24.0 - - 4 4.000 ± .188 - -
TG376 14.80 - 18.15 - - 4 4.000 ± .188 - -
Specifications (@250C)
(1) 6-32 tapped hole in non-tubulated end.
(2) Identical tubulation on both ends.
(3) The voltage level at which the spark discharge occurs when a unipolarity pulse train is applied to the gap. Typically, the pulse repetition rate is 400 pps
(pulses/second) with a rise time of 0.3 µs and a pulse width of 0.5 µs. The initial range specifies at what increasing voltage the gap begins to fire and the
rep range specifies at what decreasing voltage the gap ceases to fire repetitively.
(4) Pulse repetition rate is 1500pps instead of the standard 400pps.
(5) Though outlines 2, 3, and 3A are identical, the electrode materials and configurations vary internally.
(6) Though outlines 4 and 4A are identical, gaps with outline 4A have heavier internal construction to withstand more severe shock and vibration.
TG Two Electrode Legacy Series
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TG Legacy -1 TG Legacy 1-A
TG Legacy -2/3/3A TG Legacy -4/4A
TG Legacy -5 TG Legacy -7
TG Legacy -7A TG Legacy -9
MECHANICAL DIMENSIONS
mm/(inches)
TG Two Electrode Legacy Series
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HIGH ENERGY DEVICES, LLC MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY
OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES
TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NEITHER CIRCUIT PATENT
LICENSES NOR INDEMNITY ARE EXPRESSED OR IMPLIED. EXCEPT AS SET FORTH IN HIGH ENERGY DEVICES
STANDARD TERMS AND CONDITIONS OF SALE, HIGH ENERGY DEVICES, LLC ASSUMES NO LIABILITY
WHATSOEVER, AND DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO ITS PRODUCTS INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
OR INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT.
THE PRODUCTS DESCRIBED IN THIS DOCUMENT ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED
FOR USE AS COMPONENTS IN SYSTEMS INTENDED FOR SURGICAL IMPLANT INTO THE BODY, OR IN OTHER
APPLICATIONS INTENDED TO SUPPORT OR SUSTAIN LIFE, OR WHERE MALFUNCTION OF HIGH ENERGY DEVICES
PRODUCT MAY RESULT IN DIRECT PHYSICAL HARM, INJURY, OR DEATH TO A PERSON OR SEVERE PROPERTY OR
ENVIRONMENTAL DAMAGE. HIGH ENERGY DEVICES, LLC RESERVES THE RIGHT TO DISCONTINUE OR MAKE
CHANGES TO ITS PRODUCTS AT ANY TIME WITHOUT NOTICE.
Specification: TG Two Electrode Legacy Series
©Copyright 2002, High Energy Devices, LLC
All rights reserved. Printed in USA.
November 2002
Contact Information:
High Energy Devices, LLC
45D Progress Parkway
Maryland Heights, MO 63043
Phone: 314.434.5191
Fax: 314.434.8184
E-mail: info@highenergydevices.com
www.highenergydevices.com
Contact Information:
High Energy Devices, LLC
26 Hollenberg Court
Bridgeton, MO 63044
Phone: 314.291.0030
Fax: 314.291.8184
E-mail: info@highenergydevices.com
www.highenergydevices.com
HIGH ENERGY DEVICES, LLC MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY
OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES
TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NEITHER CIRCUIT PATENT
LICENSES NOR INDEMNITY ARE EXPRESSED OR IMPLIED. EXCEPT AS SET FORTH IN HIGH ENERGY DEVICES’
STANDARD TERMS AND CONDITIONS OF SALE, HIGH ENERGY DEVICES, LLC ASSUMES NO LIABILITY
WHATSOEVER, AND DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO ITS PRODUCTS INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
OR INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT.
THE PRODUCTS DESCRIBED IN THIS DOCUMENT ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED
FOR USE AS COMPONENTS IN SYSTEMS INTENDED FOR SURGICAL IMPLANT INTO THE BODY, OR IN OTHER
APPLICATIONS INTENDED TO SUPPORT OR SUSTAIN LIFE, OR WHERE MALFUNCTION OF HIGH ENERGY DEVICES’
PRODUCT MAY RESULT IN DIRECT PHYSICAL HARM, INJURY, OR DEATH TO A PERSON OR SEVERE PROPERTY OR
ENVIRONMENTAL DAMAGE. HIGH ENERGY DEVICES, LLC RESERVES THE RIGHT TO DISCONTINUE OR MAKE
CHANGES TO ITS PRODUCTS AT ANY TIME WITHOUT NOTICE.
Specication: TG Two Electrode Legacy Series
©Copyright 2002, High Energy Devices, LLC
All rights reserved. Printed in USA
March 2008.