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HIGH ENERGY SPARK GAP DEVICES
TG Legacy Series
DESCRIPTION
CP Clare’s TG Legacy Series of two electrode sparkgaps excel in applications that require the ef ficient transfer of
high voltage, high energy pulses and DC overvoltage protection for magnetrons, diodes, capacitors, etc. The TG
Legacy Series also includes three electrode triggered sparkgaps (cold cathode thyratrons) for switching high
levels of stored energy in fractions of a microsecond, on command, using low energy control pulses.
FEATURES
■
Tight DC breakdown voltage tolerance (± 10%)
■
Long-life tungsten or molybdenum electrodes
■
Rugged ceramic-to-metal or glass-to-metal
construction
APPLICATIONS
■
Test equipment
■
Video displays
■
Pulse generators
■
Medical electronics
VOLTAGE RANGES
Series DC Breakdown Units
Voltage
TG
Two 0.345 - 60.0 kV
Electrode
TG 1.0 - 27.5 kV
Three
Electrode
(See detailed specifications for more data. Contact CP Clare for TG and XG part numbers or for other
requirements not listed.)
564
North America: 1-800-CPCLARE Europe: 32-11-300868 Asia: 886-2-2523-6368 Japan: 81-3-3980-2212
Page 2
HIGH ENERGY SPARK GAP DEVICES
Two Electrode High-Energy Spark Gaps
SPECIFICATIONS
All characteristics at 25˚C.
PART DC BREAKDOWN INITIAL REPETITIVE PACKAGE DIMENSION A DIMENSION B DIMENSION C
NUMBER VOLTAGE PULSE PULSE OUTLINE (INCHES) (INCHES) (INCHES)
TG-6 2.50 — — 1 0.620 max 0.455 ± 0.031 0.188 max
(1)
TG-8
TG-9 3.00 — — 1 0.620 max 0.460 ± 0.031 0.188 max
TG-14 12.50 19.0 - 28.0 17.0 - 21.0 2 — — —
TG-15 3.00 — — 1 0.620 max 1.000 ± 0.031 0.125 max
TG-16
TG-17 2.60 — — 1 0.620 max 0.455 ± 0.031 0.188 max
TG-19
TG-20A 21.00 17.0 - 24.0 — 7 2.250 ± 0.125 — —
TG-22 1.00 — — 1 0.620 max 0.435 ± .031 0.188 max
TG-24 15.50 35.5 max — 2 — — —
TG-25 0.40 — — 1 0.600 ± .030 1.100 ± .031 0.250 max
TG-26A 0.75 — — 2 — — —
TG-27A 1.00 — — 2 — — —
TG-28A 1.25 — — 2 — — —
TG-29 1.50 — — 2 — — —
TG-30 2.00 — — 2 — — —
TG-31 2.50 — — 2 — — —
TG-32 3.00 — — 2 — — —
TG-33 4.00 — — 2 — — —
TG-34 5.00 — — 2 — — —
TG-35 6.00 — — 2 — — —
TG-36 8.00 — — 2 — — —
TG-37 10.00 — — 2 — — —
TG-38 12.50 — — 2 — — —
TG-39 15.00 — — 2 — — —
TG-40 17.50 — — 2 — — —
TG-41A 0.75 — — 3 — — —
TG-42A 1.00 — — 3 — — —
TG-43A 1.25 — — 3 — — —
TG-44 1.50 — — 3 — — —
TG-45 2.00 — — 3 — — —
TG-46 2.50 — — 3 — — —
TG-47 3.00 — — 3 — — —
TG-48 4.00 — — 3 — — —
TG-49 5.00 — — 3 — — —
TG-50 6.00 — — 3 — — —
TG-51 8.00 — — 3 — — —
TG-52 10.00 — — 3 — — —
TG-53 12.50 — — 3 — — —
TG-54 15.00 — — 3 — — —
TG-55 17.50 — — 3 — — —
TG-56 20.00 — — 4 3.750 ± .125 — —
TG-57 25.00 — — 4 3.750 ± .125 — —
TG-58 30.00 — — 4 4.000 ± .188 — —
TG-59 40.00 — — 4 4.250 ± .188 — —
TG-60 50.00 — — 4 4.500 ± .188 — —
(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.
(KV ± 10%) BREAKDOWN BREAKDOWN
VOLTAGE (KV)
2.50 — — 1 0.620 max 1.000 ± 0.031 0.125 max
(1)
(2)
3.00 — — 1 0.620 max 1.000 ± 0.031 0.125 max
2.20 ± 0.20 — — 1 0.620 max 0.455 ± 0.031 0.275 ± .07
(3)
VOLTAGE (KV)
(3)
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565
Page 3
HIGH ENERGY SPARK GAP DEVICES
Two Electrode High-Energy Spark Gaps
SPECIFICATIONS
All characteristics at 25˚C.
PART DC BREAKDOWN INITIAL REPETITIVE PACKAGE DIMENSION A DIMENSION B DIMENSION C
NUMBER VOLTAGE PULSE PULSE OUTLINE (INCHES) (INCHES) (INCHES)
TG-61 0.75 — — 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG-62 1.00 — — 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG-63 1.25 — — 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG-64 1.50 — — 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG-65 2.00 — — 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG-66 2.50 — — 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG-67 3.00 — — 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG-68 4.00 — — 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG-69 5.00 — — 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG-70 6.00 — — 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG-71 8.00 — — 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG-72 10.00 — — 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG-73 12.50 — — 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG-74 15.00 — — 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG-75 17.50 — — 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG-76 0.40 ± .05 — — 1 0.600 ± .030 0.494 ± .031 0.250 max
TG-77 - 9.0 - 11.5 9.0 - 11.5 special — — —
TG-78 1.00 — — 1A 0.620 max 0.425 ± .031 —
TG-79 2.50 — — 2 — — —
TG-82 15.00 15.0 - 19.0 13.0 - 18.0 7A 0.950 ± .050 — —
TG-83 16.50 16.0 - 22.0
TG-84 30.00 31.0 - 43.0
TG-85 15.00 9.0 - 11.5 9.0 - 11.5 special — — —
TG-86 0.60 — — 1A 0.620 max 0.537 ± .031 —
TG-87 0.80 — — 1A 0.620 max 0.537 ± .031 —
TG-89
TG-90 20.00 17.0 - 24.0 — special — — —
TG-98 0.345 ± .045 — — 3A — — —
TG-99 2.75 ± 0.25 — — 2 — — —
TG-100 38.00 — — 4 4.000 ± .188 0.440 ± .031 0.188 max
TG-102 1.25 — — 1A 0.620 max 0.440 ± .031 0.188 max
TG-103 1.50 — — 1A 0.620 max 0.445 ± .031 0.188 max
TG-104 2.00 — — 1A 0.620 max 0.445 ± .031 0.188 max
TG-105 2.50 — — 1A 0.620 max 0.445 ± .031 0.188 max
TG-106 3.00 — — 1A 0.620 max 0.487 ± .031 0.188 max
TG-107 3.50 — — 1A 0.620 max 0.487 ± .031 0.188 max
TG-108 4.00 — — 1A 0.620 max 0.487 ± .031 0.188 max
TG-109 5.00 — — 1A 0.620 max 0.487 ± .031 0.188 max
TG-110 0.40 ± .05 — — 1A 0.620 max — —
TG-112 0.20 ± .10 — — 1 0.620 max 0.455 ± .031 0.275 ± .075
TG-115 13.00 ± 1.00 — — 3 — — —
TG-116
TG-117 21.00 17.0 - 24.0 — 7 2.000 ± .125 — —
TG-118 21.50 16.0 - 22.0 — 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG-119 45.00 — — 4 4.250 ± .188 — —
TG-120 8.00 7.4 - 8.7 — 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
(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.
566
(KV ± 10%) BREAKDOWN BREAKDOWN
VOLTAGE (KV)
(2)
(6)
2.90 — — 1 0.620 max 0.460 ± .031 0.188 max
25.00 — — 4A 3.750 ± .125 — —
North America: 1-800-CPCLARE Europe: 32-11-300868 Asia: 886-2-2523-6368 Japan: 81-3-3980-2212
(3)
(4)
(4)
VOLTAGE (KV)
16.0 - 22.0
31.0 - 43.0
(3)
(4)
(4)
2— — —
4 4.000 ± .188 — —
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HIGH ENERGY SPARK GAP DEVICES
Two Electrode High-Energy Spark Gaps
SPECIFICATIONS
All characteristics at 25˚C.
PART DC BREAKDOWN INITIAL REPETITIVE PACKAGE DIMENSION A DIMENSION B DIMENSION C
NUMBER VOLTAGE PULSE PULSE OUTLINE (INCHES) (INCHES) (INCHES)
TG-131 30.00 33.0 25.0 4A 4.000 ± .188 — —
TG-132 2.00 — — special — — —
TG-133 9.00 9.0 - 11.5 9.0 - 11.5 7A 0.192 ± .010 — —
TG-135 2.00 — — special — — —
TG-139 0.50 — — 1A 0.487 ± .031 — —
TG-140 0.60 — — 3A — — —
TG-148 6.00 7.5 6.0 special — — —
TG-149 2.00 — — 9 0.620 max 0.219 max —
TG-152 0.50 — — special — — —
TG-153 0.38 ± .02 — — 1A 0.487 ± .031 — —
TG-155 1.40 — — 2 — — —
TG-156 2.625 ± 0.125 — — 1 0.620 max 1.000 ± .031 0.188 max
TG-157 1.20 — — 9 0.515 max 0.125 max —
TG-162 21.00 ± 1.00 — — 4 3.750 ± .125 —
TG-163 31.50 ± 3.00 — — 4 4.000 ± .188 — —
TG-164 2.20 — — 9 0.620 max 0.219nom
TG-166 0.40 — — 9 0.515 max 0.125 max —
TG-167 0.60 — — 9 0.515 max 0.125 max —
TG-168 0.80 — — 9 0.515 max 0.125 max —
TG-169 1.00 — — 9 0.515 max 0.125 max —
TG-170 2.50 — — 9 0.620 max 0.219 max —
TG-171 3.00 — — 9 0.620 max 0.219 max —
TG-172 3.50 — — 9 0.620 max 0.219 max —
TG-173 4.00 — — 9 0.620 max 0.219 max —
TG-174 5.00 — — 9 0.620 max 0.219 max —
TG-175 6.00 6.0 - 7.5 6.0 - 7.5 9 0.620 max 0.219 max —
TG-176 6.00 — — 7 2.250 ± 0.125 — —
TG-183 35.00 — — 4 4.000 ± .188 — —
TG-184
TG-186 20.00 — — 4 3.750 ± .125 — —
TG-187 1.50 — — 3 — — —
TG-188 0.60 — — 1 0.620 max 1.000 ± .031 max 0.188 max
TG-189 0.50 — — 9 0.515 max 0.125 nom —
TG-191
TG-192 31.00 ± 3.0 — — 4 4.000 ± .188 — —
TG-193 2.30 — — special — — —
TG-194 60.00 ± 8.0 — — 4 4.500 ± .188 — —
TG-196 9.00 9.0 - 11.5 9.0 - 11.5 7A 0.500 ± 0.30 — —
TG-197 18.375 ± 0.875 — — 2 — — —
TG-198
TG-249 0.18 ± .05 — — 1A 0.450 ± .031 — —
TG-359 0.345 ± 0.45 — — special — — —
TG-366A 14.00 — — special — — —
TG-373 21.00 — — special — — —
TG-375 20.5 - 24.0 — — 4 4.000 ± .188 — —
TG-376 14.8 - 18.15 — — 4 4.000 ± .188 — —
(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.
(KV ± 10%) BREAKDOWN BREAKDOWN
VOLTAGE (KV)
(5)
(2)
(1)
7.00 — — 3A — — —
0.45 — — 1 0.620 max 0.455 ± 0.031 0.275 ± 0.075
1.60 — — 1 0.620 max 1.000 ± 0.031 0.125 max
(3)
VOLTAGE (KV)
(3)
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567
Page 5
HIGH ENERGY SPARK GAP DEVICES
Two Electrode High-Energy Spark Gaps
DIMENSIONS
mm
(inches)
MECHANICAL DIMENSIONS
TG LEGACY – 1
C
TG LEGACY – 2/3/3A
1.03 NOM.
(0.406)
TG LEGACY – 5
B
7.62 ± 0.32
(3.000 ± 0.318)
C
B
1.27 ± 0.32 DIA.
(0.500 ± 0.125)
0.91 ± 0.01 DIA.
(0.360 ± 0.005)
3.34 ± 0.02 DIA.
(1.313 ± 0.007)
A DIA.
2.22 ± 0.03 DIA.
(.875 ± 0.010)
TG LEGACY 1-A
TG LEGACY – 4/4A
1.03 NOM.
(0.406)
TG LEGACY – 7
0.64
(0.250)
B
A
C
2.94 ± 0.24 DIA.
(1.156 ± 0.094)
0.91 ± 0.01 DIA.
(0.360 ± 0.005)
A
1.03 NOM.
(0.406)
1.57 DIA. MAX.
(0.620)
TG LEGACY – 7A
1.03 NOM.
(0.406)
568
1.42 ± 0.08 DIA.
(0.560 ± 0.031)
A
A
TG LEGACY – 9
A
1.42 ± 0.08 DIA.
(0.560 ± 0.031)
5.08 ± 0.32
(2.000 ± 0.125)
#8 – 32 THREAD
A
1.57 DIA. MAX.
(0.620)
B
2.26 DIA.
(0.890)
North America: 1-800-CPCLARE Europe: 32-11-300868 Asia: 886-2-2523-6368 Japan: 81-3-3980-2212
0.91 ± 0.01 DIA.
(0.360 ± 0.005)
1.64 ± 0.04 DIA.
(0.645 ± 0.015)
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HIGH ENERGY SPARK GAP DEVICES
Three Electrode High-Energy Spark Gaps
SPECIFICATIONS
All characteristics at 25˚C.
PART APPLIED DC MAIN STATIC DC PEAK CURRENT DELAY TIME PACKAGE DIMENSION A DIMENSION B DIMENSION C
NUMBER VOLTAGE BREAKDOWN (kV) (KA)
RANGE KV (±10%)
TG-7 1.3 - 4.0 5.0 15.0 0.1 I-A 2.427 nom 0.228 max 1.500 max
TG-88 1.3 - 4.0 5.0 15.0 0.1 I-B 2.427 nom 0.228 max 2.015 max
TG-114 2.5 - 8.0 10.0 15.0 0.1 I-B 2.427 nom 0.228 max 2.015 max
TG-121 0.8 - 2.0 2.5 15.0 0.3 I-B/I-D 1.990 nom 0.228 max 1.450 max
TG-122 1.5 - 4.0 5.0 15.0 0.1 I-B/I-D 1.990 nom 0.228 max 1.450 max
TG-123 2.3 - 6.0 7.5 15.0 0.1 I-B/I-D 1.990 nom 0.228 max 1.450 max
TG-124 3.0 - 8.0 10.0 15.0 0.1 I-B/I-D 1.990 nom 0.228 max 1.450 max
TG-125 4.5 - 12.0 15.0 20.0 0.1 I-B/I-D 2.67 0.54 1.560
TG-126 6.0 - 16.0 20.0 20.0 0.1 I-B/I-D 2.67 0.54 1.560
TG-127 7.5 - 20.0 25.0 20.0 0.1 I-B/I-D 2.797 nom 0.540 max 2.051 max
TG-151 2.7 - 6.0 6.8 15.0 0.1 special - - TG-177 0.6 - 1.9 2.5 10.0 0.3 III 1.625 max 0.520 ± .030 0.300 ± .025
TG-178 1.5 - 3.5 5.0 10.0 0.2 III 1.625 max 0.580 ± .030 0.340 ± .025
TG-179 3.0 - 8.0 10.0 10.0 0.1 III 1.719 max 0.620 ± .030 0.380 ± .025
TG-180 4.5 - 12.0 15.0 10.0 0.1 III 1.906 max 0.725 ± .030 0.490 ± .025
TG-181 5.3 - 14.0 17.5 10.0 0.1 III 1.906 max 0.725 ± .030 0.490 ± .025
TG-240 0.4 - 0.85 1.0 10.0 0.1 II 0.750 ± .063 - TG-241 0.5 - 1.25 1.5 10.0 0.1 II 0.750 ± .063 - TG-242 0.7 - 1.7 2.0 10.0 0.1 II 0.760 ± .063 - TG-243 0.8 - 2.1 2.5 10.0 0.1 II 0.760 ± .063 - TG-244 1.2 - 4.2 5.0 10.0 0.1 II 0.760 ± .063 - TG-245 2.0 - 6.2 7.5 10.0 0.1 II 0.760 ± .063 - TG-246 3.5 - 8.5 10.0 10.0 0.15 II 0.790 ± .063 - TG-247 4.5 - 11.0 12.5 10.0 0.15 II 0.790 ± .063 - TG-248 7.0 - 12.5 15.0 10.0 0.15 II 0.830 ± .063 - -
TG-1208 8.3 - 22.2 25.0 - 30.0 20.0 0.1 I-B 2.797 nom 0.515 ± .020 2.051 max
(7)
The peak current is a conservative maximum for an approximately triangular pulse with a 50µs half-width.
(8)
Delay time is for Mode A operation when the applied voltage is 80% of the main static breakdown and the trigger pulse reaches 150% of the maximum
trigger voltage.
(7)
(µS)
(8)
OUTLINE (INCHES) (INCHES) (INCHES
ORDERING INFORMATION
A complete part number is represented
by the information in the Part Number
column of the specification table.
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569
Page 7
HIGH ENERGY SPARK GAP DEVICES
Three Electrode High-Energy Spark Gaps
MECHANICAL DIMENSIONS
DIMENSIONS
mm
(inches)
TG LEGACY – 1A
TG LEGACY 1-D
TG LEGACY 1-B
B
C
B
#6 – 32 THREAD
0.79 ± 0.16
(0.313 ± 0.063)
A DIA.
C
A
TG LEGACY II
B
11.11 MAX.
(0.438)
A
25.40 ± 1.59
(1.000 ± 0.063)
C
A
12.70 ± 1.59
(0.500 ± 0.063)
1.59 DIA. TYP.
(0.063)
(0.188 ± 0.063)
4.76 ± 1.59
16.67 ± 0.79 DIA.
(0.656 ± 0.031)
570
TG LEGACY – OUTLINE III
A
1.90
(0.075)
0.76 NOM.
(0.030)
B
C
1.90
(0.075)
4.76
(0.188)
2.54
(0.100)
33.35 ± 1.59 DIA.
(1.313 ± 0.063)
2.22 ± 0.03 DIA. MAX.
(0.875 ± 0.010)
13.97 DIA. MAX.
(0.550)
2.22 ± 0.03 DIA. MAX.
(0.875 ± 0.010)
6.17 ± 0.25 DIA.
(0.243 ± 0.010)
North America: 1-800-CPCLARE Europe: 32-11-300868 Asia: 886-2-2523-6368 Japan: 81-3-3980-2212
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