Littelfuse CG250LLTE Gas discharge tube (gdt) product Datasheet

Gas Discharge Tube (GDT) Products
CG/CG2 Series
CG/CG2 Series
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 Approvals
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)
• Meets REA PE-80
• Available in surface
mount, and a variety of
lead options options
Applications
• Communication lines
and equipment
• CATV equipment
• Test equipment
• Data lines
• 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.
•
•
•
•
Instrumentation circuits
Medical electronics
ADSL equipment
Telecom SLIC
protection
CG/CG2 Series
Revised: January 10, 2013
Gas Discharge Tube (GDT) Products
CG/CG2 Series
Electrical Characteristics
Device Specifications (at 25°C)
DC Breakdown
in Volts
(@100V/s)
Part
Number
MIN
TYP MAX
Impulse
Breakdown
in Volts
Impulse
Breakdown In
Volts
(@100V/µs)
(@1 Kv/µsec)
MAX
(@1MHz)
MIN
CG75
60
75
90
400
650
CG90
72
90
108
400
600
CG90 SN
72
90
108
400
600
CG110
88
110
132
450
600
CG2145
116 145
174
500
600
CG2145 SN 120 145
174
500
600
CG2230
195 230
265
600
700
CG2230 SN 184 230
276
600
700
CG2250
213 250
288
625
725
CG2250 SN 200 250
300
625
725
CG2300
Life Ratings
Insulation CapaciArc
Resistance tance Voltage
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
CG2470
1200
400 470
540
850
CG2470 SN 376 470
564
850
1200
CG2600
510 600
690
1000
1400
CG2600 SN 480 600
720
1000
1400
CG28001
680 800
920
1200
1500
CG210001
850 1000 1150
1500
1600
MAX
(on state
Voltage)
@1Amp
Min
Surge
Life
(@500A
10/1000µs)
Nominal Nominal
AC
DC
Max
Impulse
AC
Dischage Holdover Impulse
Discharge Discharge Current Voltage2 Discharge
(9 cycle
Current
Current
Current
(8/20µs)
(10x1sec
@50-60Hz)
@50Hz)
TYP
(1 Application
@ 10/350µs)
TYP
1010 Ω
(at 50V)
52 V
4kA
80 V
1.5 pf
15 V
400
shots
10 shots
(@20kA)3
20 A
100 A
1010 Ω
(at 100V)
2.5kA
135 V
10 shots
(@10kA)
10 A
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.
Product Characteristics
Materials
Product Marking
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
Glow to arc
transition current
< 0.5Amps
Glow Voltage
60-160 Volts
Storage and
Operational
Temperature
-40 to +90
Maximum Follow
On Current1
230 Volts r.m.s, 200 Amps.
(800V and 1000V devices tested to UL1449 3rd edition)
LF Logo, Voltage and date code; Black in
positive print
CG/CG2 Series
Revised: January 10, 2013
©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.
ace Mount (MS) Gas
Dimensions
Discharge Tube
(GDT) Products
CG/CG2 Series
TOP VIEW
PROFILE VIEW
SEMI–PROFILE VIEW
SOLDER PAD LAYOUT
8.30 ± 0.1
4 ± 0.2
[0.161 ± 0.0080]
2.29 [0.090]
5.58 [0.232]
ø8.30±0.1
6.05 ± 0.2
[0.268 ± 0.0080]
8.71 [0.343]
Device Dimensions
5.89 [0.232]
Ø6.81 [0.268]
0.47 ± 0.1
Leaded 'L' Type Straight Axial Devices
PROFILE VIEW
Leaded 'LS' Type Shaped Lead Devices
TOP VIEW
PROFILE VIEW
TOP VIEW
6.07 ± 0.3
[0.239 ± 0.012]
8.10 Max.
[0.319 DIA Max.]
0.81DIA. TYP.
[0.032]
8.10DIA. MAX.
[0.319]
8.40 ± 0.3
[0.331 ± 0.012]
6.07 ± 0.15
[0.239 ± 0.006]
PROFILE VIEW
2 Surfaces
TOP VIEW
6.07± 0.30
[0.239 ± 0.012]
8.4 ± 0.3
[0.331 ± 0.012]
0.40 ± 0.03
[0.0157 ± 0.0012]
0.004
62 ± 2
9.85 ± 0.30
[0.388 ± 0.012]
SOLDER PAD LAYOUT
0.80
[0.032]
11.15 ± 0.30
[0.439 ± 0.012]
8.10 Max.
[0.319 DIA Max.]
Core Devices
8.40 ± 0.3
[0.331 ± 0.012]
TOP VIEW
8.10 Max.
[0.032 Max.]
9.85
[0.388]
8.66 [0.341]
PROFILE VIEW
8.60
[0.339]
SEMI–PROFILE VIEW
6.07 ± 0.15
0.004
0.40 ± 0.03
[0.0157 ± 0.0012]
2 Surfaces
SOLDER PAD LAYOUT
9.85 [0.388]
1.80
[0.071]
11.68 [0.460]
11.65
[0.459]
8.10 Max.
9.85 ± 0.30
[0.388 ± 0.012]
1.77 [0.070]
[0.239 0.81
± 0.0059]
[0.032]
8.4 ± 0.3
5.89 [0.232]
[0.331 ± 0.012]
11.15 ± 0.30
[0.439 ± 0.012]
'MS' Type Devices
0.47 ± 0.1
[0.019 ± 0.0039]
DIMENSIONS
mm
[inches]
TOP VIEW
16
Littelfuse
Trademark
250G
XXXX
Shaped Lead
4.00
PROFILE VIEW
Voltage Rating 8.30 ± 0.1
Current Rating[0.327 ± 0.0039]
Date Code
4 ± 0.2
(Contact Littelfuse
[0.157 ± 0.0079]
for additional
information)
R5.29 [R0.208]
5.58 [0.220]
6.05 ± 0.2
[0.238 ± 0.0079]
ø8.30±0.1
1.75
SEMI–PROFILE VIEW
16
16
250G
XXXX
24.00
250G
XXXX
16
250G
XXXX
16
250G
XXXX
16
250G
XXXX
2 9]
0. 7
± .00
30 0
9. 6 ±
6
.3
[0
11.50
0.47 ± 0.1
[0.019 ± 0.0039]
SOLDER PAD LAYOUT
2.29 [0.090]
16.00
0.512 (13.0) Arbor
Hole Dia.
8.71 [0.343]
12.99
(330.0)
5.89 [0.232]
1.01
(25.7)
Direction of Feed
©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
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
Pb – Free assembly
Pre Heat
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 secs
3°C/second max
TS(max) to TL - Ramp-up Rate
5°C/second max
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
TL
TS(max)
tL
Ramp-down
Preheat
TS(min)
tS
25
Peak Temperature (TP)
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
+0/-5
Critical Zone
TL to TP
Ramp-up
- Temperature Min (Ts(min))
Average ramp up rate (Liquidus Temp
(TL) to peak
Reflow
tP
TP
Temperature
Reflow Condition
time to peak temperature
(t 25ºC to peak)
Time
°C
Soldering Parameters - Wave Soldering (Thru-Hole Devices)
Recommended Process Parameters:
280
Wave Parameter
260
Lead-Free Recommendation
Preheat:
240
220
(Depends on Flux Activation Temperature)
200
180
160
140
120
100
80
60
(Typical Industry Recommendation)
Temperature Minimum:
100° C
Temperature Maximum:
Preheat Time:
150° C
60-180 seconds
Solder Pot Temperature:
280° C Maximum
Solder Dwell Time:
2-5 seconds
40
230
240
220
210
200
190
180
170
160
150
140
130
120
110
90
100
80
70
60
50
40
20
0
0
30
20
10
Temperature (°C) - Measured on bottom side of board
300
Time (Seconds)
Cooling Time
Preheat Time
Dwell Time
Soldering Parameters - Hand Soldering
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
CG/CG2 Series
Revised: January 10, 2013
©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.
<0.8 Max
Gas Discharge Tube (GDT) Products
52.4
[2.063]
CG/CG2 Series
22.8
[0.898]
6.4
[0.252]
5.0 Pitch
[0.197]
Packaging Dimensions
For 'L' Type Axial Lead Items
<1.2 Max. Lead Bend
254.0 - 356.0
[10.0 - 14.0]
<0.8 Max
Direction of Feed
80.0
[3.15]
52.4
[2.063]
22.8
[0.898]
6.4
[0.252]
5.0 Pitch
[0.197]
Core and 'MS' Type Items
275.0
[10.83]
10x4 ± 0.1 = 40 ± 0.2
[10 x 0.157 ± 0.004 = 1.575 ± 0.008]
254.0 - 356.0
± 0.1
[10.01.75
- 14.0]
[0.069 ± 0.004]
0.4 ± 0.05
[0.016 ± 0.002]
100.0
[3.94]
4 ± 0.1
[0.157 ± 0.004]
1.5 DIA. MAX.
[0.059]
76.0
[2.99]
25.0
[0.98]
7.5 ± 0.1
[0.295 ± 0.004]
8.5 ± 0.1
[0.335 ± 0.004]
80.0
[3.15]
16 +0.3 / -0.1
[0.630 +0.012 / -0.004]
17.7
[0.697]
Direction of Feed
Direction of Feed
1.5 DIA. MAX.
[0.059]
8.6 ± 0.1
[0.339 ± 0.004]
12 ± 0.1
[0.472 ± 0.004]
For 'LS' Type Shaped Lead Items
275.0
[10.82]
10x4 ± 0.1 = 40 ± 0.2
[10x.157 ± 0.004 = 1.575 ± 0.008]
1.75 ± 0.1
[0.069 ± 0.004]
0.5 ± 0.05
[0.020 ± 0.002]
1.9
[0.075]
11.75 ± 0.1
[0.463 ± 0.004]
1.5 DIA. MAX.
[0.059]
100.0
[3.93]
4 ± 0.1
[0.157 ± 0.004]
76.0
[2.99]
11.5 ± 0.1
[0.453 ± 0.004]
8 ± 0.1
[0.315 ± 0.004]
24 +0.3 / -0.1
[0.945 +0.019 / -0.004]
25.0
[0.98]
25.7
[1.01]
Direction of Feed
0.5 ± 0.01
[0.020 ± 0.004]
9 ± 0.1
[0.354 ± 0.004]
1.5 DIA. MAX.
[0.059]
©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.
16 ± 0.1
[0.630 ± 0.004]
CG/CG2 Series
Revised: January 10, 2013
Gas Discharge Tube (GDT) Products
CG/CG2 Series
Part Numbering System and Ordering Information
CG2 XXX XX * XX
Series
CG -- for 75, 90, or 110V
CG2 -- for 145V to 1000V
Breakdown Voltage
75
90
110
145
230
250
300
350
470
600
800
1000
Lead Option Code
(Blank) = No Leads / Core
L = Straight Leads
LS = Shaped Leads
MS = Surface Mount
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.
Option Code*
SN = may have different DC Breakover
Voltage Limit. Please refer to Electrical
Characteristics table for additional
information.
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
LTE = Straight Lead, Tape & Reel per IEC 60286-1 - 500 per reel
LS(Blank) = Shaped Lead (see LS dimensions), Tape & Reel - 500 per reel
CG/CG2 Series
Revised: January 10, 2013
©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.
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