Littelfuse Inc. 的 CG/CG2 Series 规格书

Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Description
Littelfuse’s 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.
The CG Series (75V-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
• RoHS and Lead-free
compliant
• Rugged Ceramic-Metal
construction
• Low Capacitance
(<1.5pf)
• Meets REA PE-80
• Available in surface
mount, and a variety of
lead options options
• RoHS Compliant and
Lead-Free
Applications
• Communication lines
and equipment
• CATV equipment
• Test equipment
• Data lines
• Power supplies
• Instrumentation circuits
• Medical electronics
• ADSL equipment
• Telecom SLIC
protection
AGENCY AGENCY FILE NUMBER
E1286621
E3201162
Agency Approvals
CG/CG2 Series
RoHS
2 Electrode GDT Graphical Symbol
NOTES:
1. Certified to UL 497B.
2. Only CG2300, CG2470, CG2600, CG2800 and CG221000. Certified to UL 1449.
Additional Information
Datasheet Samples
Resources CG/CG2
Samples
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Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Electrical Characteristics
Part
Number
Device Specifications (at 25°C) Life Ratings
DC Breakdown
in Volts
(@100V/s)
Impulse
Break-
down
in Volts
(@100V/µs)
Impulse
Break-
down In
Volts
(@1 Kv/µsec)
Insulation
Resistance
Capaci-
tance
(@1MHz)
Arc
Voltage
(on state
Voltage)
@1Amp
Min
Surge
Life
(@500A
10/1000µs)
Nominal
Impulse
Discharge
Current
(8/20µs)
Nominal
AC
Discharge
Current
(10x1sec
@50-60Hz)
AC
Dischage
Current
(9 cycle
@50Hz)
DC
Holdover
Voltage2
Max
Impulse
Discharge
Current
(1 Application
@ 10/350µs)
MIN TYP MAX MAX MIN MAX TYP TYP
CG75
60 75 90 400 650
1010 Ω
(at 50V)
1.5 pf 15 V 400
shots
5 shots
(@20kA) 20 A 100 A
52 V 4kA
CG90
72 90 108 400 600
CG90 SN
72 90 108 400 600
CG110
88 110 132 450 600
80 V
2.5kA
CG2145
116 145 174 500 600
1010 Ω
(at 100V)
CG2145 SN
120 145 174 500 600
CG22301
195 230 265 600 700
135 V
CG2230 SN1
184 230 276 600 700
CG2250
213 250 288 625 725
CG2250 SN
200 250 300 625 725
CG2300
255 300 345 700 800
CG2300 SN
240 300 360 700 800
CG2350
297 350 403 750 900
CG2350 SN
280 350 420 750 900
CG2420
357 420 483 800 1000
CG24701
400 470 540 850 1200
CG2470 SN1
376 470 564 850 1200
CG26001
510 600 690 1000 1400
CG2600 SN1
480 600 720 1000 1400
CG28001
680 800 920 1200 1500 10 shots
(@10kA) 10 A
CG210001
850 1000 115 0 1500 1600 65 A
Product Characteristics
Materials
LS, Axial:
Device: Tin Plated 2–5 Microns
Lead Wires: Tin Plated 17.5 ± 12.5 Microns
Construction: Ceramic Insulator
Core:
Device: Tin Plated 17.5 ± 12.5 Microns.
Construction: Ceramic Insulator
MS:
Device: Dull Tin Plated 7–9 Microns
Construction: Ceramic Insulator
Product Marking LF Logo, Voltage and date code; Black in
positive print
Glow to arc
transition current < 0.5Amps
Glow Voltage
60-160 Volts
Storage and
Operational
Temperature
-40 to +90
Maximum Follow
On Current
1
230 Volts r.m.s, 200 Amps.
(800V and 1000V devices tested to UL1449 3rd edition)
NOTES:
1. Certified to UL 1449.
2. Reference REA PE-80, 0.2A. Tested to ITU-T Rec K.12 and REA PE 80 < 150 mSec.
3. 5 x [5 (+) or 5 (-)] applications 20kA 8/20µSec. (75 to 600 volt devices.)
10 x [5 (+) and 5 (-)] applications 10kA 8/20µSec. (800 and 100 volt devices.)
% Littelfuse’ ExpimscApnlmd \ Answusmllumd
Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Device Dimensions
[0.331 ± 0.012]
8.4 ± 0.3
[0.239 ± 0.012]
6.07 ± 0.3
[0.0157 ± 0.0012]
0.40 ± 0.03
0.004
2 Surfaces
[0.032]
0.80
[0.388 ± 0.012]
9.85 ± 0.30
[0.439 ± 0.012]
11.15 ± 0.30
[0.331 ± 0.012]
8.40 ± 0.3
8.10 Max.
[0.319 DIA Max.]
9.85
[0.388]
11.65
[0.459]
8.60
[0.339]
1.80
[0.071]
TOP VIEWPROFILE VIEW
SOLDER PAD LAYOUT
6.05 ± 0.2
[0.238 ± 0.0079]
5.58 [0.220]
ø8.30±0.1
R5.29 [R0.208]
4 ± 0.2
[0.157 ± 0.0079]
8.30 ± 0.1
[0.327 ± 0.0039]
8.71 [0.343]
2.29 [0.090]
5.89 [0.232]
0.47 ± 0.1
[0.019 ± 0.0039]
9.30 ± 0.2
[0.366 ± 0.0079]
TOP VIEW
PROFILE VIEW SEMI–PROFILE VIEW
SOLDER PAD LAYOUT
Leaded 'LS' Type Shaped Lead Devices
'MS' Type Devices
Leaded 'L' Type Straight Axial Devices
Core Devices
6.05 ± 0.2
[0.268 ± 0.0080]
5.58 [0.232]
8.71 [0.343]
2.29 [0.090]
5.89 [0.232]
4.00
16.00
24.00
11.50
1.75
TOP VIEW PROFILE VIEW SEMI–PROFILE VIEW SOLDER PAD LAYOUT
TOP VIEWPROFILE VIEW SOLDER PAD LAYOUT
DIMENSIONS mm
[inches]
Shaped Lead
0.512 (13.0) Arbor
Hole Dia.
1.01
(25.7)
12.99
(330.0)
Direction of Feed
16
250G
XXXX
Voltage Rating
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
8.30 ± 0.1
9.30 ± 0.2
ø8.30±0.1
Ø6.81 [0.268]
0.47 ± 0.1
R5.29 [R0.208]
4 ± 0.2
[0.161 ± 0.0080]
8.10
DIA. MAX.
[0.319]
6.07 ± 0.15
0.81 DIA. TYP.
[0.032]
62 ± 2
[0.239 ± 0.006]
[0.331 ± 0.012]
8.4 ± 0.3
[0.0157 ± 0.0012]
0.40 ± 0.03
0.004
2 Surfaces
[0.032]
0.81
[0.388 ± 0.012]
9.85 ± 0.30
[0.439 ± 0.012]
11.15 ± 0.30
[0.239 0.012]
6.07 0.30
±
±
[0.331 ± 0.012]
8.40 ± 0.3
9.85 [0.388]
11.68 [0.460]
8.66 [0.341]
1.77 [0.070]
8.10 Max.
[0.319 DIA Max.]
16
250G
XXXX
16
250G
XXXX
16
250G
XXXX
16
250G
XXXX
16
250G
XXXX
Surface Mount (MS) Dimensions
TOP VIEW
PROFILE VIEW
6.07 ± 0.15
[0.239 ± 0.0059]
5.89 [0.232]
8.10 Max.
[0.032 Max.]
8.10 Max.
TOP VIEW PROFILE VIEW SEMI–PROFILE VIEW
0.47 ± 0.1
[0.019 ± 0.0039]
% Litteltuse” ExnevhxeADnlled \ AnswevxDelweved rampevamve m AMeasmed on mm 5m :1 mm
Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Reflow Condition Pb – Free assembly
Pre Heat
- 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
Peak Temperature (TP)260+0/-5 °C
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
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
Soldering Parameters - Wave Soldering (Thru-Hole Devices)
Soldering Parameters - Hand Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100° C
Temperature Maximum: 150° C
Preheat Time: 60-180 seconds
Solder Pot Temperature: 280° C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Process Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
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Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Packaging Dimensions
24 +0.3 / -0.1
[0.945 +0.019 / -0.004]
11.5 ± 0.1
[0.453 ± 0.004]
1.75 ± 0.1
[0.069 ± 0.004]1.5 DIA. MAX.
[0.059]
1.5 DIA. MAX.
[0.059] 16 ± 0.1
[0.630 ± 0.004]
0.5 ± 0.05
[0.020 ± 0.002]
0.5 ± 0.01
[0.020 ± 0.004]
10x4 ± 0.1 = 40 ± 0.2
[10x.157 ± 0.004 = 1.575 ± 0.008]
4 ± 0.1
[0.157 ± 0.004]
11.75 ± 0.1
[0.463 ± 0.004]
8 ± 0.1
[0.315 ± 0.004]
9 ± 0.1
[0.354 ± 0.004]
1.9
[0.075]
Direction of Feed
25.7
[1.01]
275.0
[10.82]
100.0
[3.93]
25.0
[0.98]
76.0
[2.99]
For 'LS' Type Shaped Lead Items
Direction of Feed
254.0 - 356.0
[10.0 - 14.0]
80.0
[3.15]
22.8
[0.898]
52.4
[2.063]
6.4
[0.252]
<0.8 Max
<1.2 Max. Lead Bend
5.0 Pitch
[0.197]
16 +0.3 / -0.1
[0.630 +0.012 / -0.004]
7.5 ± 0.1
[0.295 ± 0.004]
8.5 ± 0.1
[0.335 ± 0.004]
1.75 ± 0.1
[0.069 ± 0.004] 1.5 DIA. MAX.
[0.059]
1.5 DIA. MAX.
[0.059] 12 ± 0.1
[0.472 ± 0.004]
8.6 ± 0.1
[0.339 ± 0.004]
0.4 ± 0.05
[0.016 ± 0.002]
10x4 ± 0.1 = 40 ± 0.2
[10 x 0.157 ± 0.004 = 1.575 ± 0.008]
4 ± 0.1
[0.157 ± 0.004]
Direction of Feed
17.7
[0.697]
275.0
[10.83]
100.0
[3.94]
25.0
[0.98]
76.0
[2.99]
For 'L' Type Axial Lead Items
Core and 'MS' Type Items
Direction of Feed
254.0 - 356.0
[10.0 - 14.0]
80.0
[3.15
]
22.8
[0.898]
52.4
[2.063]
6.4
[0.252]
<0.8 Max
<1.2 Max. Lead Bend
5.0 Pitch
[0.197]
% tleltuse" ExpemxaADnllzd \ Anxwux Damn (:62 XXX x * xx J
Gas Discharge Tubes
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17
CG/CG2 Series
Part Numbering System and Ordering Information
Examples:
CG75 -- A non-leaded 75V device
CG2230L -- A leaded 230V device
CG2800LTR -- A leaded 800V device, tape-and-reel (per EIA standard RS-296-D)
Notes:
CG/CG2 devices with other breakdown voltages in the 75-1000 V range are available upon request.
CG2 XXX XX * XX
Breakdown Voltage
75
90
110
145
230
250
300
350
470
600
800
1000
Series
CG -- for 75, 90, or 110V
CG2 -- for 145V to 1000V
Lead Option Code
Option Code*
(Blank) = No Leads / Core
L = Straight Leads
LS = Shaped Leads
MS = Surface Mount
Packaging Option Code
(Blank) = No Leads / Core, Bulk Bag - 400 pcs
L(Blank) = Straight Lead, Tray - 50 pcs
LTR = Straight Lead, Tape & Reel per EIA RS-296-E - 500 per reel
LS(Blank) = Shaped Lead (see LS dimensions), Tape & Reel - 500 per reel
SN = may have different DC Breakover
Voltage Limit. Please refer to Electrical
Characteristics table for additional
information.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete
Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.