Littelfuse CG42.7 Gas discharge tube (gdt) product Datasheet

Gas Discharge Tube (GDT) Products
CG4 Series
CG4 Series
RoHS
Description
Littelfuse CG4 Gas Discharge Tubes (GDT) series
provides high levels of protection against fast rising
transients caused by lightning disturbances. Offered
in a miniature surface mount package, it has a surge
rating of 3kA 8/20μs.
Littelfuse CG4 mini GDTs are high voltage (8003000V) devices designed for surge protection and
high isolation applications. It is also suitable for
applications for which bias voltage or signal levels of
several hundred volts are normally present.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E320116
Two Electrode GDT Graphical Symbol
This CG4 mini GDTs are also suitable for applications
with bias voltages or signal levels of several hundred
volts. It can be used in conjunction with Littelfuse
MOV (Metal Oxide Varistor) to provide superior
protection performance.
Features
• Voltage Ranges 800V to
3000V
• Excellent response to
fast rising transients
• 3kA 8/20μs surge rating
• UL 1449 recognized
• Offered with two
squared terminals
• Non-Radioactive
• Ultra Low capacitance
(<0.8pF)
• RoHS compliant and
Lead-free
Applications
• CATV equipment
• Antennas
• Air conditioning
• EV Power Station
• Inverters/Variable
Frequency Drives ( VFD)
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/30/16
• IEEE 803.2 compliant
Ethernet interfaces
• Power Supplies
• Medical electronics
• Test Equipment
• Renewable Energy
Gas Discharge Tube (GDT) Products
CG4 Series
Electrical Characteristics
Device Specifications (at 25°C)
DC Breakdown
in Volts
Impulse
Breakdown
in Volts
Impulse
Breakdown In
Volts
(@100V/µs)
(@1 kV/µs)
(@100V/s)
Part
Number
MIN
TYP
MAX
MAX
CG40.8
640
800
960
1200
1300
CG41.0
800
1000
1200
1400
1500
CG41.2
960
1200
1440
1600
1700
CG41.8
1440
1800
2160
2400
2500
CG42.0
1600
2000
2400
2600
2700
CG42.5
2000
2500
3000
3000
3200
Insulation
Resistance
2160
2700
3240
3200
3600
CG43.0
2400
3000
3600
3500
3900
Capacitance
Max
Impulse
Discharge
Current
(@1MHz)
AC
Dischage
Current
AC
Dischage
Current
(50Hz, 1sec)
(Single, 9
Cycles)
MIN
MIN
3A
10A
(8/20µs)
MIN
CG42.7
Life Ratings
1GΩ*
MAX
10 Shots
@
(3kA)
0.8pf
Arc
Voltage
Impulse
Life
(On State
Voltage @
1Amp, 1Min)
(10/1000µs)
(100A)
MIN
300
Shots
20V
1 Shot at
5kA
Note:
* Insulation resistance measured at:
• 250Vdc for CG40.8,
• 500Vdc for CG41.0 8, CG41.0, CG41.8 and CG42.0,
• 1000Vdc for CG42.5, CG42.7 and CG43.0
Product Characteristics
Materials
Device Tin Plated 17.5 ± 12.5
Microns
Construction: Ceramic Insulator
Storage and Operational
Temperature
-40 to +90°C
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
Pre Heat
Pb – Free assembly
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 secs
Average ramp up rate (Liquidus Temp
(TL) to peak
3°C/second max
TS(max) to TL - Ramp-up Rate
5°C/second max
Reflow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
260
Time within 5°C of actual peak
Temperature (tp)
10 – 30 seconds
Ramp-down Rate
6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
260°C
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
tL
Ramp-down
TS(min)
25
Peak Temperature (TP)
+0/-5
tP
TP
Temperature
Reflow Condition
Preheat
tS
time to peak temperature
(t 25ºC to peak)
Time
°C
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/30/16
Gas Discharge Tube (GDT) Products
CG4 Series
Device Dimensions
Product Marking
Dimensions in millimeters
TOP VIEW
PROFILE VIEW
LF 1200 16
6.
0
±
0.
2
3.5 ± 0.2
6.2 ± 0.2
0.6 ± 0.1
Littelfuse Logo
Voltage Code
Production Year
Code
4.2 ± 0.2
Part Numbering System and Ordering Information
TOP VIEW
1.3
CG4 x.x SM
7.2
Series
CG4
3.5
Breakdown Voltage
Recommended Soldering Pad Layout
0.8 = 800V
1.0 = 1000V
3.0 = 3000V
(Voltage code examples for x.x)
Lead Option Code
SM (Surface Mount,
two squared terminals)
Taping and Reel Specifications
Unit = mm
Item
Spec
Item
Spec
P
8 ± 0.1
E
1.75 ± 0.1
P0
4.0 ± 0.1
D
Ø1.55 ± 0.05
W
16.0 ± 0.3
K
6.5 ± 0.1
F
7.5 ± 0.1
t
0.4 ± 0.05
A0
4.9 ± 0.1
B0
6.5 ± 0.1
E
2.00 ± 0.10
P0
P
D
t
F
W
B0
Ø1.50MIN
A0
K
Packaging Quantity:
1000 pcs per reel (13”)
1 reels per inner box
330±4.0
>1.5 Typ.
10 inners box per carton
10,000 pcs per full carton
100 Typ.
18 Typ.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/30/16
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