HIGH-SPEED TRANSIENT SURGE PROTECTORS
UNI-IMPS
DESCRIPTION
CP Clare’s UNI-IMP high-speed transient surge protectors (0.55-20kV) provide the ultimate protection from high-
energy, fast-rising transients such as Nuclear EMP. These devices are constructed using a proprietary
semiconductor junction process that results in nanosecond response times combined with peak current ratings in
excess of 20kA. A unique benefit of this technology is that the breakdown voltage is virtually independent of the
rise time of the transient. In addition, the low capacitance of these devices allows for direct placement on high-
frequency lines and antenna feeds without excessive loading.
FEATURES
s
Fast impulse breakdown (≤120% of typical DC
APPLICATIONS
s
s
s
s
s
breakdown to 200kV/µs)
s
Tight DC breakdown voltage tolerance (±10%)
s
Non-radioactive
s
Low capacitance
Antenna feedlines
Test equipment
Video displays
Medical electronics
Instrumentation circuits
STANDARD VOLTAGES
Series
UBD
DC Breakdown
Voltage (typ)
550
600
650
750
850
1.0
1.2
1.5
2.0
2.5
3.0
4.0
4.0
5.0
6.0
7.5
10.0
12.0
15.0
20.0
V
V
V
V
V
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
kV
Unit
UBT
and
UGT
(See detailed specifications for more information.)
www.cpclare.com
561
HIGH-SPEED TRANSIENT SURGE PROTECTORS
UNI-IMPS
SPECIFICATIONS
All characteristics at 25˚C
UBD-550
CONDITIONS
100V/s
5kV/µs
100V
1MHz
3kA (PW=15µs)
UBD-600
MIN
540
-
10
10
-
420
UBD-650
MIN
585
-
10
10
-
500
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
SYMBOL MIN TYP
V
BD
V
bd
IR
C
-
495
-
10
10
-
330
550
-
-
-
-
MAX
605
660
-
20.0
-
TYP
600
-
-
-
-
MAX
660
720
-
20.0
-
TYP
650
-
-
-
-
MAX UNITS
715
780
-
20.0
-
V
V
Ω
pF
surges
Life Ratings
Surge Life
UBD-750
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5kV/µs
100V
1MHz
3kA (PW=15µs)
V
BD
V
bd
IR
C
675
-
10
10
-
660
750
-
-
-
-
825
900
-
20.0
-
UBD-850
MIN
765
-
10
10
-
830
UBD-1.0
MIN
900
-
10
10
-
1080
CONDITIONS
SYMBOL MIN TYP
MAX
TYP
850
-
-
-
-
MAX
935
1020
-
20.0
-
TYP
MAX UNITS
V
V
Ω
pF
surges
1000 1100
-
1200
-
-
-
15.0
-
-
Life Ratings
Surge Life
UBD-1.2
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5kV/µs
100V
1MHz
3kA (PW=15µs)
V
BD
V
bd
IR
C
-
1.08 1.20
-
-
10
10
-
-
-
1410
-
1.32
1.44
-
15.0
-
UBD-1.5
MIN
1.35
-
10
10
-
1900
UBD-2.0
MIN
1.80
-
10
10
-
2400
CONDITIONS
SYMBOL MIN TYP
MAX
TYP
1.50
-
-
-
-
MAX
1.65
1.80
-
15.0
-
TYP
2.00
-
-
-
-
MAX UNITS
2.20
2.40
-
10.0
-
kV
kV
Ω
pF
surges
Life Ratings
Surge Life
UBD-2.5
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5kV/µs
100V
1MHz
3kA (PW=15µs)
V
BD
V
bd
IR
C
-
2.25 2.50
-
-
10
10
-
-
-
2400
-
2.75
3.00
-
10.0
-
UBD-3.0
MIN
2.70
-
10
10
-
2400
UBD-4.0
MIN
3.60
-
10
10
-
2400
CONDITIONS
SYMBOL MIN TYP
MAX
TYP
3.00
-
-
-
-
MAX
3.30
3.60
-
5.0
-
TYP
4.00
-
-
-
-
MAX UNITS
4.40
4.80
-
5.0
-
kV
kV
Ω
pF
surges
Life Ratings
Surge Life
UBT-4.0
UGT-4.0
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5kV/µs
100V
1MHz
10kA (PW=5µs)
V
BD
V
bd
IR
C
-
3.60 4.00
-
-
10
10
-
-
-
1300
-
4.40
4.80
-
5.0
-
UBT-5.0
UGT5.0
MIN
4.50
-
10
10
-
1300
UBT-6.0
UGT-6.0
MIN
5.40
-
10
10
-
1300
CONDITIONS
SYMBOL MIN TYP
MAX
TYP
5.00
-
-
-
-
MAX
5.50
6.00
-
3.0
-
TYP
6.00
-
-
-
-
MAX UNITS
6.60
7.20
-
3.0
-
kV
kV
Ω
pF
surges
Life Ratings
Surge Life
North America: 1-800-CPCLARE
Europe: 32-11-300868
Asia: 886-2-2523-6368
Japan: 81-3-3980-2212
562
HIGH-SPEED TRANSIENT SURGE PROTECTORS
UNI-IMPS
SPECIFICATIONS
All characteristics at 25˚C
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5KV/µs
100V
1MHz
10kA (PW=5µs)
V
BD
V
bd
IR
C
-
6.75 7.50
-
-
10
10
-
-
-
1300
-
8.25
4.8
-
5.0
-
9.0
-
10
10
-
1300
10.0
-
-
-
-
11.0
6
-
3.0
-
10.8
-
10
10
-
1300
12.0
-
-
-
-
13.2
7.2
-
3.0
-
kV
kV
Ω
pF
surges
UBT-7.5
UGT-7.5
CONDITIONS
SYMBOL MIN TYP
UBT-10.0
UGT-10.0
TYP
UBT-12.0
UGT-12.0
TYP
MAX UNITS
MAX MIN
MAX MIN
Life Ratings
Surge Life
UBT-15.0
UGT-15.0
PARAMETER
Device Specifications
DC Breakdown
Impulse Breakdown
Insulation Resistance
Capacitance
100V/s
5KV/µs
100V
1MHz
10kA (PW=5µs)
V
BD
V
bd
IR
C
-
13.5 15.0
-
-
10
10
-
-
-
1300
-
16.5
18.0
-
2.0
-
UBT-20.0
UGT-20.0
TYP
20.0
-
-
-
-
CONDITIONS
SYMBOL MIN TYP
MAX MIN
18.0
-
10
10
-
1300
MAX UNITS
22.0
24.0
-
2.0
-
kV
kV
Ω
pF
surges
Life Ratings
Surge Life
MECHANICAL DIMENSIONS
UBT SERIES
UGT SERIES
DIMENSIONS
mm
(inches)
7.94
±
1.59
(0.312
±
0.063)
7.94
±
1.59
(0.312
±
0.063)
7.94
±
1.59
(0.312
±
0.063)
7.94
±
1.59
(0.312
±
0.063)
14.96
±
0.79 DIA.
(0.589
±
0.031)
14.22
±
0.79 DIA.
(0.560
±
0.031)
30.16
±
1.59
(1.187
±
0.063)
54.28
±
1.59
(2.137
±
0.063)
ORDERING INFORMATION
UBD SERIES
UNI-IMPS with other breakdown voltages in the 0.55 to 20kV range
are available on request. All UNI-IMPs are available with .360 O.D.
endcaps. UGTs are also available with .250 O.D. endcaps. UBDs are
available with a threaded male termination (#8-20) on one end.
14.29
±
1.59
(0.562
±
0.063)
6.32
±
1.59
(0.249
±
0.063)
14.96
±
0.79 DIA.
(0.589
±
0.031)
A complete part number is represented by the digits below.
Breakdown voltages are expressed in Volts for devices <1000V and
kV for devices
≥1kV.
For example, UBD-550 is a 550V UBD series
device, and UBT-10.0 is a 10kV UBT series device.
20.64
±
1.59
(0.812
±
0.063)
UBT- X.X
UBT-XX.X
UGT- X.X
UGT-XX.X
Series
UBD
UBT
UGT
for 4.0-9.0kV
for 10.0-20.0kV
for 4.0-9.0kV
for 10.0-20.0kV
Breakdown Voltage
See specifications
tables
www.cpclare.com
563
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