Triggered Spark Gaps
EVERYTHING
IN A
NEW
LIGHT.
P
erkinElmer’s Triggered
Ceramic-Metal
Spark Gaps are a family of versatile
high voltage switches. They consist
of three electrodes in a hermetically
sealed, pressurized ceramic enve-
lope. Triggered Spark Gaps are
generally characterized by a peak
current capability of thousands to
tens of thousands of amperes, delay
times of tens of nanoseconds, arc
resistance of tens of milliohms and
inductance of 5 to 30 nanohenries.
They are suitable for capacitor
switching applications such as flash-
lamps, electrically pumped gas
lasers, medical lithotripters, and
as crowbar protection devices.
Features
•
Fast switching operation
•
High voltage holdoff
•
Ceramic-metal construction
•
No warm up period
•
High current capability
•
Long life
Triggered Spark Gap Ratings
O -A
PerkinElmer Range, kV
Model
Min/Max
No.
(1,10)
(2)
GP-89
GP-90
GP-91
GP-93
GP-82B
GP-31B
GP-20B
GP-46B
GP-85
GP-86
GP-87
GP-70
GP-30B
GP-22B
GP-12B
GP-14B
GP-41B
GP-32B
GP-15B
GP-74B
GP-81B
0.7
1.3
4.4
8
0.4
2
3.5
8
2
6
10
12
2
6
10
12
12
20
25
40
40
(3)
VT
Min Trig
(kV Open
Circuit
(5)
C
10
C
A,C
A, C
A,B
10
TR-148A
30
TR-180B
300
TR-180B
Typical Delay Time*
Recommended
Trigger
Mode
PerkinElmer
Transformer
(6, 7)
TR-148A
100
1000
* when operated in mode A
Simultaneous Ratings Simultaneous Ratings
Crowbar Service,
Repetitive Switching
Typical Life:
5000-20,000 Shots
(11)
Typical Life:
1-5 Million Shots
(11)
(Nanoseconds)
At 70% SBV At 40% SBV
SBV, kV
(4)
2.1
3.4
10
20
1.6
6
11
20
6
15
24
36
6
15
24
36
36
48
60
100
100
2.6
4.2
12.5
25
2
7.5
14
25
8
20
30
42(8)
7.5
19
30
42(8)
42
60(8)
86(8)
120(8)
120(9)
20
20
20
20
5 kA peak
0.1 coulomb
3 millicoulombs/shot
lb = 35 mAdc
lp = 6 Aac
7.5 kA peak
0.2 coulomb
4 millicoulombs/shot
lb = 60 mAdc
lp = 8 Aac
A
A,B
A
TR-1795
TR-180B
TR1700
30
300
25 kA peak
0.4 coulomb
4 millicoulombs/shot
lb = 100 mAdc
lp = 10 Aac
A,B
TR-1795
A
TR-1700
30
300
50 kA peak
0.5 coulomb
10 millicoulombs/shot
A,B
A
TR-1795
TR-1700
TR-1795
30
300
A
TR-1700
30
300
Peak currents up to 100 lb = 200 mAdc
kA and charge transfer lp = 15 Aac
up to 5 coulombs are
obtainable at reduced
life (100-1000 shots).
Notes
1.
Optimum operating voltage is typically 60 to 80% of SBV.
2.
Operation below minimum value may result in erratic firing
over time.
3.
Operation at this value may result in self-firing over time.
4.
Represents minimum main-gap breakdown voltage with no
trigger applied.
5.
Value shown contains safety factor for end-of-life requirements.
6.
PerkinElmer TM-11A Trigger Module can be used to trigger
all gaps.
7.
Transformers listed vary mechanically and electrically. See
PerkinElmer Transformer Data Sheet.
8.
These units must be operated in a liquid or gas dielectric to prevent
external flashover: GP-70 and GP-14B, above 24 kV; GP-32B and
GP-15B, above 35 kV; GP-74B and GP-81B, above 60 kV.
9.
Designed for high altitude, high holdoff conditions.
10.
Other voltage ranges and mechanical configurations are available
on request; for example, the GP-20B can be supplied with a 6 to
16 kV operating range by specifying GP-20B-20. The 20 would be
the SBV and E-E maximum would be 80% of SBV = 16kV.
11.
E = Stored energy in joules ( 1/2CV
2
), lb = average current in
amperes, lp = RMS current in amperes, R = total circuit resistance
in ohms, P = average power in watts.
page 2
PerkinElmer
Optoelectronics
GP-89, GP-90, GP-91 AND GP-93
0.25
0.590
±
0.030
0.062
±
0.020
0.250
0.050 DIA
THRU HOLE
0.062
±
0.020
0.090 O.D. NOM
RED AND WHITE
TEFLON JACKET
19/34 TC CENTER
CONDUCTOR 10
±
1 LONG
0.700
MAX
"T"
0.160
MAX
"A"
0.200
MAX
0.310
MAX
1.200
MAX
"O"
0.150 O.D. NOM
RED VINYL JACKET
7/30 TC CENTER
CONDUCTOR 10
±
1 LONG
0.150
MAX
0.120 O.D. NOM
BLACK VINYL JACKET
7/30 TC CENTER
CONDUCTOR 10
±
1 LONG
GP-20B, GP-31B, GP-46B, AND GP-82B
4 EQUALLY SPACED
MOUNTING HOLES
0.120 DIA
(EACH END)
1.330 DIA B.C.
1.310
45°
A
MAX
1.187
1.550
GP-70, GP-85, GP-86, AND GP-87
CLEARANCE FOR A
NO. 8 SCREW
4 HOLES EACH END
ON A 2.575 B.C.
3.0 MAX
2.250
MAX
1.780
REF
TYPE
GP-20B,31B AND 82B
GP-46B
1.600 DIA
MAX
0.185 DIA
0.215
"T"
"A"
1.020 DIA
MAX
"O"
"A"
0.187
0.312
90°
±
1°
3.0
MAX
DIA
"A"
"T"
10-32
UNF THD
"O"
CERAMIC BODY
"A"
2.000
±
0.010 DIA
A
GP-12B, GP-14B, GP-15B, GP-22B, GP-30B,
GP-32B AND GP-41B
CLEARANCE FOR A
NO. 8 SCREW
6 HOLES EACH END
ON A 3.937 B.C.
60° TYP
GP-74B and GP-81B
B
CLEARANCE FOR A
NO. 8 SCREW
6 HOLES EACH END
ON A 3.937 B.C.
60° TYP
"A"
A
3.000
±
0.050
DIA
A
0.500 REF
"A"
B
4.250
±
0.025
DIA
"T"
4.250
±0.025
DIA
"T"
10-32
UNF THD
10-32
UNF THD
"O"
"A"
"O"
0.4 REF
GLAZED CERAMIC
A
MAX
2.375
3.625
B
MAX
0.750
0.250
GLAZED CERAMIC
TYPE
GP-74B
GP-81B
A
MAX
3.625
4.500
B
MAX
0.250
RECESSED
MIN
CREEPAGE
PATH IN INCHES
4
6
3.900
DIA MAX
"A"
TYPE
GP-12B, 14B, 22B AND 30B
GP-15B, 32B AND 41B
“A” = ADJACENT ELECTRODE,
“O” = OPPOSITE ELECTRODE,
Note: Dimensions in inches
“T” = TRIGGER PROBE
All data and specifications subject to change without notice.
PerkinElmer
Optoelectronics
page 3
Triggered Spark Gaps
Ceramic Metal
Environmental Specifications
Ambient temperature range
Operating temperature range
Nonoperating temperature range
Vibration
Shock
Thermal Shock
-54 to +100°C
-65 to +125°C
15 to 500 Hz at 10 g maximum
50 g, 11 milliseconds
-65 to +125°C
Electrical Specifications
Electrode capacity
Interelectrode resistance
Less than 5 pf.
Greater than 10
10
ohms at 500 V.
Mechanical Specifications
Envelope
Torque applied to studs
Ceramic-metal, hermetically sealed, exposed metal parts nickel plated.
6 inch-pounds maximum.
Marking
PerkinElmer’s trademark, part designation, and date code.
PerkinElmer welcomes inquiries about special types. We would be pleased to discuss the requirements
of your application and the feasibility of designing a type specifically suited to your needs.
Our Quality and Environmental Policy
“Our goal is to supply our customers
the agreed quantity of specified products and services,
defect free and on time while conducting business
in an environmentally responsible manner”
* All values are nominal; specifications subject to change without notice.
To request additional information, receive a quote, or place an order, please contact PerkinElmer Optoelectronics at office listed below.
PerkinElmer Optoelectronics
35 Congress Street
Salem, MA 01970
Toll Free:
(800) 950-3441 (USA)
Phone:
(978) 745-3200
Fax:
(978) 745-0894
PerkinElmer is a registered trademark of PerkinElmer, Inc.
www.perkinelmer.com/opto
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