HIGH-ENERGY TRIGGERED SPARK GAPS
558
DESCRIPTION
North America: 1-800-CPCLARE
Europe: 32-11-300868
Asia: 886-2-2523-6368
Japan: 81-3-3980-2212
Triggergaps
DESCRIPTION
STANDARD VOLTAGES
APPLICATIONS
FEATURES
CP Clare's Triggergaps are high-energy spark gaps that are capable of switching stored energy in a fraction of a
microsecond. Triggergaps require no standby power, are extremely rugged, and require only a low-energy, high-
voltage triggering pulse. The miniature TA series (1-15kV) provides switching capability for pulses with energy
content as high as 50 joules. The larger TB series (2.5-25 kV) will reliably switch pulses with up to 300 joules of
energy. The TG-221 to 226 (1-60 kV) can switch pulses with energy contents of up to 6000 joules and feature
adjustable self-breakdown voltages.
s
Tight self-breakdown voltage tolerance
(
10%;TA & TB series)
s
Adjustable self-breakdown voltage
(TG-221 to TG-226)
s
Rugged ceramic-metal construction
s
Refractory metal electrodes
s
Corrosion-resistant stainless steel
external surfaces (TB series)
s
High current surge generators
s
Exploding bridge wire systems
s
Crowbars
s
Flashtube triggers
Series or P/N
Self-Breakdown
Units
Voltage (typ)
TA
1.0
kV
2.0
kV
5.0
kV
7.0
kV
10.0
kV
15.0
kV
TB
2.5
kV
5.0
kV
10.0
kV
15.0
kV
20.0
kV
25.0
kV
TG-221
1.0-20.0
kV
TG-222
18.0-40.0
kV
TG-224
1.0-20.0
kV
TG-225
18.0-40.0
kV
TG-226
35.0-60.0
kV
HIGH-ENERGY TRIGGERED SPARK GAPS
SPECIFICATIONS
559
www.cpclare.com
Triggergaps
All characteristics at 25C
TA-1.0
TA-2.0
TA-5.0
PARAMETER
CONDITIONS
SYMBOL MIN TYP MAX
MIN
TYP MAX MIN
TYP
MAX UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
0.9
1.0
1.1
1.8
2.0
2.2
4.5
5.0
5.5
kV
Applied Voltage
E
bb
0.4
-
0.85
0.7
-
1.7
1.2
-
4.2
kV
Trigger Voltage
1
t
r
=0.5
s, PW=3.0
s
e
trig
3.0
-
2.5
3.0
-
2.5
3.5
-
2.5
kV pk
Dimension A
-
0.687 0.750 0.813 0.697 0.760 0.823 0.697 0.760 0.823 inches
Life Ratings
Discharge Life
2
1000 shots into .2
-
45
-
-
50
-
-
50
-
-
J
TA-7.0
TA-10.0
TA-15.0
PARAMETER
CONDITIONS
SYMBOL MIN TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
6.3
7.0
7.7
9.0
10.0
11.0
13.5
15.0
16.5
kV
Applied Voltage
E
bb
1.9
-
5.8
3.5
-
8.5
7.0
-
12.5
kV
Trigger Voltage
1
t
r
=0.5
s, PW=3.0
s
e
trig
3.7
-
2.8
5
-
3.5
8.0
-
4.5
kV pk
Dimension A
-
0.697 0.760 0.823 0.727 0.790 0.853 0.767 0.830 0.893 inches
Life Ratings
Discharge Life
2
1000 shots into .2
-
50
-
-
60
-
-
70
-
-
J
TB-2.5
TB-5.0
TB-10.0
PARAMETER
CONDITIONS
SYMBOL MIN TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
2.25 2.50
2.75
4.5
5.0
5.5
9.0
10.0
11.0
kV
Applied Voltage
E
bb
0.8
-
2.0
1.5
-
4.0
3.0
-
8.0
kV
Trigger Voltage
1
t
r
=0.5
s, PW=3.0
s
e
trig
3.1
-
1.8
3.2
-
1.9
4.6
-
2.1
kV pk
Dimension A
-
-
1.99
-
-
1.99
-
-
1.99
-
inches
Dimension B
-
-
-
0.23
-
-
0.23
-
-
0.58
inches
Dimension C
-
-
-
2.03
-
-
2.03
-
-
2.10
inches
Life Ratings
Discharge Life
2
discharges into .3
-
150
-
-
150
-
-
300
-
-
J
TB-15.0
TB-20.0
TB-25.0
PARAMETER
CONDITIONS
SYMBOL MIN TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
13.5 15.0
16.5
18.0
20.0
22.0
22.5
25.0
27.5
kV
Applied Voltage
E
bb
4.5
-
12.0
6.0
-
16.0
7.5
-
20.0
kV
Trigger Voltage
1
t
r
=0.5
s, PW=3.0
s
e
trig
6.3
-
3.5
8.0
-
4.5
9.7
-
5.2
kV pk
Dimension A
-
-
2.67
-
-
2.79
-
-
2.79
-
inches
Dimension B
-
-
-
0.58
-
-
0.58
-
-
0.58
inches
Dimension C
-
-
-
2.10
-
-
2.10
-
-
2.10
inches
Life Ratings
Discharge Life
2
discharges into .3
-
300
-
-
300
-
-
300
-
-
J
1
The trigger voltages given in these tables are the minimum triggering voltages necessary for triggering at the corresponding applied voltage limits. As the applied trigger voltage
increases, the trigger voltage required for triggering decreases. It is assumed that the trigger is applied across the trigger and adjacent main electrodes -- higher trigger voltages are
required if it is applied across the trigger voltage and opposite main electrodes.
2
End point for life testing is a 15% reduction in the self-breakdown voltage.
3
Because the self-breakdown voltage of these devices is adjustable, the trigger voltage required for any particular applied voltage cannot be specified. Clare suggests setting the self-
breakdown voltage to at least 115% of the maximum applied voltage.
HIGH-ENERGY TRIGGERED SPARK GAPS
SPECIFICATIONS
560
North America: 1-800-CPCLARE
Europe: 32-11-300868
Asia: 886-2-2523-6368
Japan: 81-3-3980-2212
16.67
0.79 DIA.
(0.656
0.031)
25.40
1.59
(1.000
0.063)
1.59 DIA. TYP.
(0.063)
12.70
1.59
(0.500
0.063)
11.11 MAX.
(0.438)
TA SERIES
A
4.76
1.59
(0.188
0.063)
Triggergaps
All characteristics at 25C
TG-221
TG-222
TG-224
PARAMETER
CONDITIONS
SYMBOL MIN TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
1.0
-
20.0
18.0
-
40.0
1.0
-
20.0
kV
Applied Voltage
E
bb
0.5
-
18.0
15.0
-
35.0
0.5
-
19.0
kV
Dimension A
-
-
2.25
-
-
3.25
-
-
3.00
-
inches
Dimension B
-
-
2.50
-
-
2.50
-
-
4.50
-
inches
Life Ratings
Peak Current
PW=30
s
-
20
-
-
20
-
-
50
-
-
kA
Discharge Life
3
1000 shots into 1
-
3000
-
-
3000
-
-
6000
-
-
J
TG-225
TG-226
PARAMETER
CONDITIONS
SYMBOL MIN TYP
MAX
MIN
TYP
MAX
UNITS
Device Specifications
Self-Breakdown Voltage
100V/s
E
Z
18.0
-
40.0
35.0
-
60.0
kV
AppliedVoltage
E
bb
15.0
-
35.0
30.0
-
55.0
kV
Dimension A
-
-
3.50
-
-
4.50
-
inches
Dimension B
-
-
4.50
-
-
4.50
- inches
Life Ratings
Peak Current
PW=30
s
-
50
-
-
50
-
-
kA
Discharge Life
3
1000 shots into 1
-
6000
-
-
6000
-
-
J
1
The trigger voltages given in these tables are the minimum triggering voltages necessary for triggering at the corresponding applied voltage limits. As the applied trigger voltage
increases, the trigger voltage required for triggering decreases. It is assumed that the trigger is applied across the trigger and adjacent main electrodes -- higher trigger voltages are
required if it is applied across the trigger voltage and opposite main electrodes.
2
End point for life testing is a 15% reduction in the self-breakdown voltage.
3
Because the self-breakdown voltage of these devices is adjustable, the trigger voltage required for any particular applied voltage cannot be specified. Clare suggests setting the self-
breakdown voltage to at least 115% of the maximum applied voltage.
DIMENSIONS
mm
(inches)
MECHANICAL DIMENSIONS
ORDERING INFORMATION
A DIA.
C
B
TB SERIES
TRIGGER
ADJACENT
OPPOSITE
Triggergaps with self-breakdown voltages other than the standard val-
ues listed (in the ranges of 1-15kV for the TA series and 2.5-25kV for the
TB series) are available upon request.
A complete part number is represented by the digits below. Self-break-
down voltages are expressed in kV. For example, TA-5.0 is a 5kV TA
series device and TB-25.0 is a 25kV TB series device. The TG-221
to 226 are ordered by the appropriate part number as given in the
specifications.
TA- X.X
for 1.0-9.0kV
TA- XX.X
for 10.0-15.0kV
TB- X.X
for 2.5-9.0kV
TB- XX.X
for 10.0-25.0kV
Series
TA
TB
Self-breakdown voltage
See specification tables
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