Littelfuse CG-CG2SN User Manual
Gas Discharge Tube (GDT) Products
CG/CG2 Series
CG/CG2 Series
Agency Approvals
Description
Littelfuse highly reliable CG/CG2 Series GDTs provide
a high degree of surge protection in a small size ideal
for board level circuit protection.
GDTs function as switches which dissipate a
minimum amount of energy and therefore handle
currents that far surpass other types of transient
voltage protection. Their gas-filled, rugged ceramic
metal construction make them well suited to adverse
environments.
The CG/CG2 series comes in a variety of forms
including surface mount, core, straight and shaped
leads, to serve a variety of mounting methods.
AGENCY AGENCY FILE NUMBER
E128662
E320116
2 Electrode GDT Graphical Symbol
The CG Series (75-110V) is ideal for protection of test
and communication equipment and other devices
in which low voltage limits and extremely low arc
voltages are required.
The CG2 Series (145V-1000V) is ideal for protecting
equipment where higher voltage limits and holdover
voltages are necessary.
Features
• Rugged Ceramic-Metal
construction
• Low Capacitance
(<1.5pf)
Applications
• Communication lines
and equipment
• CATV equipment
• Test equipment
• Data lines
• Meets REA PE-80
• Available in surface
mount, and a variety of
lead options options
• Instrumentation circuits
• Medical electronics
• ADSL equipment
• Telecom SLIC
protection
• Power supplies
©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Customer should verify actual device performance in their specific applications.
CG/CG2 Series
Revised: January 10, 2013
Gas Discharge Tube (GDT) Products
CG/CG2 Series
Electrical Characteristics
Device Specifications (at 25°C) Life Ratings
DC Breakdown
in Volts
(@100V/s)
Part
Number
CG75
CG90
CG90 SN
CG110
CG2145
CG2145 SN
CG2230
CG2230 SN
CG2250
CG2250 SN
CG2300
CG2300 SN
CG2350
CG2350 SN
CG2420
CG2470
CG2470 SN
CG2600
CG2600 SN
MIN TYP MAX MAX MIN MAX TYP TYP
60 75 90 400 650
72 90 108 400 600
72 90 108 400 600
88 110 132 450 600
116 145 174 500 600
120 145 174 500 600
195 230 265 600 700
184 230 276 600 700
213 250 288 625 725
200 250 300 625 725
255 300 345 700 800
240 300 360 700 800
297 350 403 750 900
280 350 420 750 900
357 420 483 800 1000
400 470 540 850 1200
376 470 564 850 1200
510 600 690 1000 1400
480 600 720 1000 1400
CG28001680 800 920 1200 1500
CG210001850 1000 1150 1500 1600 65 A
NOTES:
1. Tested to UL1449 Third Edition
2. Reference REA PE-80, 0.2A. Tested to ITU-T Rec K.12 and REA PE 80 < 150 mSec.
Impulse
Break-
down
in Volts
(@100V/µs)
Impulse
Break-
down In
Volts
(@1 Kv/µsec)
Insulation
Resistance
10
10
Ω
(at 50V)
10
Ω
10
(at 100V)
Capaci-
tance
Voltage
(@1MHz)
(on state
Voltage)
@1Amp
1.5 pf 15 V
Arc
Min
Surge
Life
(@500A
10/1000µs)
400
shots
Nominal
Impulse
Discharge
Current
(8/20µs)
10 shots
(@20kA)
10 shots
(@10kA)
Nominal
AC
Discharge
Current
(10x1sec
@50-60Hz)
20 A
3
10 A
Dischage
Current
(9 cycle
@50Hz)
100 A
AC
DC
Holdover
Voltage
Impulse
2
Discharge
(1 Application
@ 10/350µs)
52 V 4kA
80 V
135 V
Max
Current
2.5kA
Product Characteristics
LS, Axial:
Device: Tin Plated 2–5 Microns
Lead Wires: Tin Plated 17.5 ± 12.5 Microns
Construction: Ceramic Insulator
Materials
Product Marking
CG/CG2 Series
Core:
Device: Tin Plated 17.5 ± 12.5 Microns.
Construction: Ceramic Insulator
MS:
Device: Dull Tin Plated 7–9 Microns
Construction: Ceramic Insulator
LF Logo, Voltage and date code; Black in
positive print
Glow to arc
transition current
Glow Voltage
Storage and
Operational
Temperature
Maximum Follow
On Current
Revised: January 10, 2013
< 0.5Amps
60-160 Volts
-40 to +90
1
Customer should verify actual device performance in their specific applications.
230 Volts r.m.s, 200 Amps.
(800V and 1000V devices tested to UL1449 3rd edition)
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
©2013 Littelfuse, Inc.
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