Product Series /
Part Number Breakdown Voltage
UBDXXX 550-950V
UBDX.X 1.0-4.0kV
UBTX.X 4.0-9.0kV
UBTXX.X 10.0-20.0kV
UGTX.X 4.0-9.0kV
UGTXX.X 10.0-20.0kV
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Applications
Features Description
Ordering Information
•Antenna feedlines
•Test equipment
•Video displays
•Medical electronics
•Instrumentation circuits
•Fast impulse breakdown (≤120% of typical DC
breakdown to 200kV/µs)
•Tight DC breakdown voltage tolerance (+10%)
•Non-radioactive
•Low capacitance
High Energy Devices’ Uni-Imps 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 the 5-10kA range. 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.
Uni-Imps®
UBD/UBT/UGT Series
All Uni-Imps are available with .360 O.D. endcaps. UBDs are available with
a threaded male termination (#8-20) on one end while UGTs are also
available with .250 O.D. endcaps.
DC Breakdown
Series Voltage (Nom) Unit
UBD 550 V
600 V
650 V
750 V
850 V
1.0 kV
1.2 kV
1.5 kV
2.0 kV
2.5 kV
3.0 kV
4.0 kV
UBT 4.0 kV
and 5.0 kV
UGT 6.0 kV
7.5 kV
10.0 kV
12.0 kV
15.0 kV
20.0 kV
Standard Voltages
Devices in the UBD/UBT/UGT Series with other breakdown voltages in the
.55-20kV range are available upon request.
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, UBD550 is a 550V UBD series device,
UBT7.5 is a 7.5kV UBT series device and UGT10.0 is
a 10kV UGT series device.
UBD550 UBD600 UBD650
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 495 550 605 540 600 660 585 650 715 V
Impulse Breakdown 5kV/µs Vbd - - 660 - - 720 - - 780 V
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 20.0 - - 20.0 - - 20.0 pF
Life Ratings
Surge Life 3kA (PW=15µs) - 330 - - 420 - - 500 - - surges
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UBD/UBT/UGT Series
Specifications (@250C)
UBD750 UBD850 UBD1.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 675 750 825 765 850 935 900 1000 1100 V
Impulse Breakdown 5kV/µs Vbd - - 900 - - 1020 - - 1200 V
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 20.0 - - 20.0 - - 15.0 pF
Life Ratings
Surge Life 3kA (PW=15µs) - 660 - - 830 - - 1,080 - - surges
Specifications (@250C)
UBD1.2 UBD1.5 UBD2.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 1.08 1.20 1.32 1.35 1.50 1.65 1.80 2.00 2.20 kV
Impulse Breakdown 5kV/µs Vbd - - 1.44 - - 1.80 - - 2.40 kV
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 15.0 - - 15.0 - - 10.0 pF
Life Ratings
Surge Life 3kA (PW=15µs) - 1,410 - - 1,900 - - 2,400 - - surges
Specifications (@250C)
UBD2.5 UBD3.0 UBD4.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 2.25 2.50 2.75 2.70 3.00 3.30 3.60 4.00 4.40 kV
Impulse Breakdown 5kV/µs Vbd - - 3.00 - - 3.60 - - 4.80 kV
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 10.0 - - 5.0 - - 5.0 pF
Life Ratings
Surge Life 3kA (PW=15µs) - 2,400 - - 2,400 - - 2,400 - - surges
Specifications (@250C)
UBT4.0 UBT5.0 UBT6.0
UGT4.0 UGT5.0 UGT6.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 3.60 4.00 4.40 4.50 5.00 5.50 5.40 6.00 6.60 kV
Impulse Breakdown 5kV/µs Vbd - - 4.80 - - 6.00 - - 7.20 kV
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 5.0 - - 3.0 - - 3.0 pF
Life Ratings
Surge Life 10kA (PW=15µs) - 1,300 - - 1,300 - - 1,300 - - surges
UBD/UBT/UGT Series
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Specifications (@250C)
UBT7.5 UBT10.0 UBT12.0
UGT7.5 UGT10.0 UGT12.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 6.75 7.50 8.25 9.00 10.00 11.00 10.80 12.00 13.20 kV
Impulse Breakdown 5kV/µs Vbd - - 9.00 - - 12.00 - - 14.40 kV
Insulation Resistance 100V IR - 1010 --10
10 --10
10 -Ω
Capacitance 1MHz C - - 2.0 - - 2.0 - - 2.0 pF
Life Ratings
Surge Life 10kA (PW=15µs) - 1,300 - - 1,300 - - 1,300 - - surges
Specifications (@250C)
UBT15.0 UBT20.0
UGT15.0 UGT20.0
Parameter Conditions Symbol Min Nom Max Min Nom Max Units
Device Specifications
DC Breakdown 100V/s VBD 13.5 15.0 16.5 18.0 20.0 22.0 kV
Impulse Breakdown 5kV/µs Vbd - - 18.0 - - 24.0 kV
Insulation Resistance 100V IR - 1010 --10
10 -Ω
Capacitance 1MHz C - - 2.0 - - 2.0 pF
Life Ratings
Surge Life 10kA (PW=15µs) - 1,300 - - 1,300 - - surges
Specifications (@250C)
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UBD/UBT/UGT Series
MECHANICAL DIMENSIONS
mm/(inches)
UBD Series
UBT Series
UGT Series
UBD/UBT/UGT 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: UBD/UBT/UGT 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.
Specication: UBD/UBT/UGT Series
©Copyright 2002, High Energy Devices, LLC
All rights reserved. Printed in USA
March 2008.
