3-Electrode Gas Discharge Tube (GDT)
UN3E7 Series
UN3E7-XXXHM
UN3E7-XXXH
Description
Gas discharge Tubes (GDT) are classical components for
protecting the installations of the telecommunications. It is
essential that IT and telecommunications systems -with their
high-grade but sensitive electronic circuits - be protected by
arresters. They are thus fitted at the input of the power supply
system together with varistors and at the connection points to
telecommunication lines. They have become equally indispensable
for protecting base stations in mobile telephone systems as well as
extensive cable television (CATV) networks with their repeaters
and distribution systems.
These protective components are also indispensable in other
sectors, In AC power transmission systems, they are often used
with current-limiting varistors, In customer premises equipment
such as DSL modems, WLAN routers, TV sets and cable modems
In air-conditioning equipment, the integral black-box concept offers
graduated protection by combining arresters with varistors, PTC,
diodes and inductor.
Schematic Symbol
a = Tip
a
b
b = Ring
e = Ground
(center electrode)
e
Agency Approvals
AGENCY
Features
u
u
u
u
u
u
Non-Radioactive
AGENCY FILE NUMBER
RoHS compliant
E341061
Low insertion loss
Excellent response to fast rising transients
Ultra low capacitance
Product Characteristics
10KA surge capability tested with 8/20μs
pulse as defined by IEC 61000-4-5
Materials
Nickel-plated with Tinplated wires
UNION
Product
Marking
XXXH
XXX -Nominal voltage
M
Applications
-20KA
u
u
u
u
u
u
u
u
u
u
u
Communication equipment
CATV equipment
Glow to Arc
Transition
Current
~1 Amps
~70 Volts
Test equipment
Glow Voltage
Data lines
Power supplies
Storage and
Operational
Temperature
Telecom SLIC protection
Broadband equipment
ADSL equipment, including ADSL2+
XDSL equipment
-40 to +90°C
UN3E7-XXXHM
UN3E7-XXXH
~2.3g
~2.1g
Weight
Satellite and CATV equipment
Consumer electronics
UN Semiconductor Co., Ltd.
www.unsemi.com.tw
@ UN Semiconductor Co., Ltd. 2013
Revision October 18, 2013
1 / 4
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.