GTCX35-XXX-R05 Series
GTCX35-XXXM-R05 Series
Littelfuse Circuit Protection 5mm 3Pole GDTs (ceramic
gas discharge tubes), are commonly used to help
protect sensitive telecom equipment such as
communication lines, signal lines and data transmission
lines from damage caused by transient surge voltages
that typically result from lightning strikes and equipment
switching operations.
Littelfuse Circuit Protection GDTs offer a high level of
surge protection, low capacitance and a broad array of
breakover voltage levels, making them suitable for
applications such as MDF (Main Distribution Frame)
modules, high data-rate telecom applications (e.g.
ADSL, VDSL), and surge protection on power lines.
Littelfuse Circuit Protection GDTs can help equipment
meet the most stringent regulatory standards.
Gas Discharge Tubes
Benefits:
Compact, small form factor suitable for efficient
assembly
Helps provide overvoltage fault protection against
high energy surges
Suitable for high-frequency applications
Features:
3Pole, 5mm devices
Broad voltage range from 75V-600V
Various form factors: surface-mount, leaded, no
leads
Optional fail-short mechanism on some devices
Low capacitance and insertion loss
Crowbar overvoltage protection
UL 497B recognized
RoHS compliant
Devices tested per ITU K.12 recommendations
Non-radioactive materials
Applications:
Telecommunications
- MDF modules, xDSL equipment, RF system
protection, antenna, base station
•
Industrial and consumer electronics, such as
- Surge protectors
- Alarm system
© 2016 Littelfuse,Inc.
Telecommunications
Specifications are subject to change without notice.
Revised July
MDF modules, xDSL equipment, RF sytem
26,2016
• Industrial and consumer electronics,
DOCUMENT: SCD27305
such as
1
STATUS:
REV: G
RELEASED
DATE: JULY 26, 2016
Protection, antenna, pase station
GTCX35-XXX-R05 Series
GTCX35-XXXM-R05 Series
Device Voltage Ratings and Part Marking
Part Number
DC Sparkover
@100V/s
±20% Tolerance
(V)
GTCX35-750M-R05
GTCX35-900M-R05
GTCX35-141M-R05
GTCX35-151M-R05
GTCX35-201M-R05
GTCX35-231M-R05
GTCX35-251M-R05
GTCX35-261M-R05
GTCX35-301M-R05
GTCX35-351M-R05
GTCX35-401M-R05
GTCX35-421M-R05
GTCX35-471M-R05
GTCX35-501M-R05
GTCX35-551M-R05
GTCX35-601M-R05
75
90
140
150
200
230
250
260
300
350
400
420
470
500
550
600
Impulse
Sparkover
Gas Discharge Tubes
DC Holdover
Voltage
Per ITU K.12
(<150ms)
(V)
<52
<52
<80
<80
<135
<135
<135
<135
<150
<150
<150
<150
<150
<150
<150
<150
On-State Voltage
Nominal
(@ 1A)
(V)
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
@100 Vµs (V)
450
450
500
500
600
600
600
700
800
900
900
900
1050
1100
1300
1300
@1000 Vµs (V)
550
550
600
600
700
700
700
800
900
1000
1000
1000
1150
1200
1400
1400
Note:X options: S: Surface-mount; A: Axial-leaded; N: No-leaded
Device Surge Rating, Capacitance, Insulation Resistance, UL
Listing
Part Number
Impulse
Discharge
Current
8x20µs
10 hits
GTCx35-xxxM-R05
5kA
Impulse
Life
AC
Discharge
Current
(1sec duration;
10 hits)
@50 Hz
5Arms
Capacitance
Insulation
Resistance
UL
Rating
10x1000µs
300 hits
100A
@1Mhz
<1pF
@100V*
10,000 (MΩ)
UL497B
#E179610
All Devices
* Devices <=150V measured @ 50V
Devices >= 500V measured @ 250V
© 2016 Littelfuse,Inc.
Specifications are subject to change without notice.
Revised July 26,2016
2
DOCUMENT: SCD27305
STATUS:
RELEASED
REV: G
DATE: JULY 26, 2016
GTCX35-XXX-R05 Series
GTCX35-XXXM-R05 Series
Product Dimensions
Gas Discharge Tubes
DIMENSIONS = MILLIMETERS [INCHES]
Axial Leaded (GTCA35-XXXM-R05)
Axial Leaded (GTCA35-XXXM-R05-FT)
“T” Leaded (GTCT35-XXXM-R05)
Surface-mount (GTCS35-XXXM-R05)
No Leads with –FT (GTCN35-XXXM-R05-FT)
No Leads (GTCN35XXM-R05)
© 2016 Littelfuse,Inc.
Specifications are subject to change without notice.
Revised July 26,2016
3
DOCUMENT: SCD27305
STATUS:
RELEASED
REV: G
DATE: JULY 26, 2016
GTCX35-XXX-R05 Series
GTCX35-XXXM-R05 Series
Pad Layout – Surface-mount Devices
Gas Discharge Tubes
mm:
in*:
X
NOM
6.0
(0.236)
Y1
NOM
3.6
(0.142)
Y2
NOM
3.6
(0.142)
Z1
NOM
2.5
(0.098)
Z2
NOM
1.3
(0.051)
General Characteristics
No Radioactive Material
Storage Temperature: -40º to +90º
C
C
Operating Temperature: -40º to +90º
C
C
Body: Nickel Plated
Leads: Surface-mount, “T” and Axial Devices: Tin Plated
Devices with no leads: Nickel Plated
Soldering Notes: Devices with no leads: non-solderable; suitable for insertion into a magazine clip
Materials Information
RoHS Compliant
ELV Compliant
Packaging Information
Part Description
No Leaded:
GTCN35-XXXM-R05
With Leads:
GTCA35-XXXM-R05/GTCT35-XXXM-R05
Surface-mount (T&R): GTCS35-XXXM-R05-2
Tray / Reel
100 pcs (Tray)
100 pcs (Tray)
1,000 pcs (Reel)
Standard Package
2,500 pcs
1,000 pcs
8,000 pcs
© 2016 Littelfuse,Inc.
Specifications are subject to change without notice.
Revised July 26,2016
4
DOCUMENT: SCD27305
STATUS:
RELEASED
REV: G
DATE: JULY 26, 2016
GTCX35-XXX-R05 Series
GTCX35-XXXM-R05 Series
Gas Discharge Tubes
Part Numbering System
Example Part Number: GTCX35-351M-R05-FT
GT =
C=
X=
3=
5=
351 =
M=
R=
05 =
FT =
-2
Gas Tube
Ceramic
Lead Configuration:
N=
No leads;
A=
Axial Leads;
S=
Surface-mount;
T=
T Configuration Leads
3 Electrode device
5mm Diameter
DC Spark Over Voltage of 350V (at 100V/s)
Tolerance of 20% on DC Spark Over Voltage
Product Family Designator
Surge rating: 8x20µs 5kA 10 times
With Fail-Short mechanism
Tape and Reel
© 2016 Littelfuse,Inc.
Specifications are subject to change without notice.
Revised July 26,2016
5
DOCUMENT: SCD27305
STATUS:
RELEASED
REV: G
DATE: JULY 26, 2016
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