High Voltage 2-Electrode Gas Discharge Tube (GDT)
UN2E8 / UN2H8 Series
Description
The high voltage (1.0 - 6.0KV) gas discharge tubes are designed
for surge protection and high isolation applications, and for
applications for which bias voltages or signal levels of several
hundred volts are normally present.
UN2E8-XXXLL
UN2H8-XXXLL
UN2E8-XXXL
UN2H8-XXXL
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Agency Approvals
Features
Non-Radioactive
RoHS compliant
Low insertion loss
Excellent response to fast rising transients
Ultra low capacitance
5KA surge capability tested with 8/20μs
pulse as defined by IEC 61000-4-5
Schematic Symbol
Product Characteristics
Materials
Nickel-plated with Tinplated wires
Applications
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CRT terminals
CATV equipment
Antennas
Power supplies
Medical electronics
Product
Marking
Glow to Arc
Transition
Current
Glow Voltage
Storage and
Operational
Temperature
UNION XXXXL
XXXX -Nominal voltage
L
-5KA
< 0.5 Amps
~180 Volts
-40 to +90°C
UN2E8-XXXLL
UN2E8-XXXL
Weight
UN2H8-XXXLL
UN2H8-XXXL
~1.5g
~1.35g
~1.6g
~1.45g
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
1/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
High Voltage 2-Electrode Gas Discharge Tube (GDT)
UN2E8 / UN2H8 Series
Dimensions
(Unit: mm)
Figure 3
Figure 1
Figure 2
Figure 4
Electrical Characteristics
Service Life
DC
Spark-over
Voltage
Maximum Impulse
Spark-over Voltage
Minimum
Insulation
Resistance
Maximum
Arc
Capacitance Voltage
Nominal
Impulse
Discharge
Current
@8/20μs
±5
times
5KA
5KA
5KA
5KA
5KA
5KA
5KA
5KA
5KA
5KA
5KA
5KA
Max
Impulse
Discharge
Current
@8/20μs
1 time
10KA
10KA
10KA
10KA
10KA
10KA
10KA
10KA
10KA
10KA
10KA
10KA
Part Number
Figure Marking
@100V/S
UN2E8-1000LL
UN2E8-1000L
UN2E8-1600LL
UN2E8-1600L
UN2E8-2000LL
UN2E8-2000L
UN2E8-2500LL
UN2E8-2500L
UN2E8-2700LL
UN2E8-2700L
UN2E8-3000LL
UN2E8-3000L
UN2E8-3500LL
UN2E8-3500L
UN2H8-4000LL
UN2H8-4000L
UN2H8-4500LL
UN2H8-4500L
UN2H8-5000LL
UN2H8-5000L
UN2H8-5500LL
UN2H8-5500L
UN2H8-6000LL
UN2H8-6000L
Notes:
@100V/μs
1500V
2200V
3000V
3800V
3800V
4300V
4800V
5400V
5800V
6000V
6500V
7500V
@1KV/μs
1600V
2400V
3500V
4000V
4000V
4500V
5000V
5600V
6000V
6500V
7000V
8000V
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
1 GΩ
(at 100V)
@1MHz
1.5pF
1.5pF
1.5pF
1.5pF
1.5pF
1.5pF
1.5pF
1.0pF
1.0pF
1.0pF
1.0pF
1.0pF
@1A
~25V
~25V
~25V
~25V
~25V
~25V
~25V
~25V
~25V
~25V
~25V
~25V
1
3
1
3
1
3
1
3
1
3
1
3
1
3
2
4
2
4
2
4
2
4
2
4
1000L
1600L
2000L
2500L
2700L
3000L
3500L
4000L
4500L
5000L
5500L
6000L
1000V±20%
1600V±20%
2000V±20%
2500V±20%
2700V±20%
3000V±20%
3500V±20%
4000V±20%
4500V±20%
5000V±20%
5500V±20%
6000V±20%
1). Terms in accordance with ITU-T K.12 and GB/T 9043-2008
2). At delivery AQL 0.65 level
Ⅱ,
DIN ISO 2859
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
2/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
High Voltage 2-Electrode Gas Discharge Tube (GDT)
UN2E8 / UN2H8 Series
Electrical Rating
Item
DC Spark-over Voltage
Impulse Spark-over
Voltage
Insulation Resistance
Test Condition / Description
The voltage is measured with a slowly rate of rise dv / dt=100V/s
The maximum impulse spark-over voltage is measured with a rise time of
dv / dt=100V//μs or 1KV/μs
The resistance of gas tube shall be measured each terminal each other terminal,
please see above spec.
The capacitance of gas tube shall be measured each terminal to each other
terminal.
Test frequency :1MHz
The maximum current applying a waveform of 8/20μs that can be applied across
the terminals of the gas tube. One hour after the test is completed, re-testing of the
DC spark-over voltage does not exceed
±30%
of the nominal DC spark-over
voltage. Dwell time between pulses is 3 minutes.
Requirement
Capacitance
To meet
the specified
value
Nominal Impulse
Discharge Current
Recommended soldering profile
Wave soldering
Reflow soldering
Soldering profile applied a single process
Soldering Parameters - Hand Soldering
Solder Iron Temperature: 350°C +/-5°C
Heating Time: 5 seconds max.
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
High Voltage 2-Electrode Gas Discharge Tube (GDT)
UN2E8 / UN2H8 Series
Part Numbering
UN2E8
–
XXX L L
L,
No,
with axial wire
without wire
L, 5KA
8/20μs Level
Nominal DC Spark-over Voltage
1000 = 1000V
3000=3000V
1600 = 1600V
3500=3500V
2000 = 2000V
4500=4500V
2500 = 2500V
5500=5500V
Series
Packaging Information
Part Number
UN2E8-XXXLL
UN2H8-XXXLL
UN2E8-XXXL
UN2H8-XXXL
Unit: mm
Description
100PCS per Tray, 10 Trays / Inner Carton
50PCS per Tray, 10 Trays / Inner Carton
100PCS per Tray, 10 Trays / Inner Carton
100PCS per Tray, 10 Trays / Inner Carton
Quantity
1000
500
1000
1000
Tray used in UN2E8-XXXLL
Tray used in UN2H8-XXXLL
Tray used in UN2E8 / 2H8-XXXL
Cautions and warnings
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Gas discharge tubes (GDT) may become hot in case of longer periods of current stress (danger of burning).
Gas discharge tubes (GDT) may be used only within their specified values. In the event of overload, the head contacts may
fail or the component may be destroyed.
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Damaged Gas discharge tubes (GDT) must not be re-used.
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
4/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
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