CG5 and SL0902A Series
Gas Discharge Tube (GDT) Products
CG5 and SL0902A Series
Description
®
Agency Approvals
AGENCY
®
Littelfuse Broadband Optimized
™
SL0902A Series offers
high surge ratings in a miniature package. Special design
features provide high levels of protection against fast
rising transients in the 100V/μs to 1kV/μs range usually
caused by lightning disturbances. Low insertion loss is
perfectly suited to broadband equipment applications.
The capacitance does not vary with voltage, and will
not cause operational problems with ADSL2+, where
capacitance variation across Tip and Ring is undesirable.
These devices are extremely robust and are able to
divert a 2500A pulse without destruction. For AC
Power Cross of long duration, overcurrent protection is
recommended.
AGENCY FILE NUMBER
E128662
Littelfuse CG5 MS mini surge arresters are specifically
designed for protection of electrical and communication
equipment against over voltage transients in surface
mount assembly applications. This series offers the most
cutting edge protection using non-radioactive elements.
Features
2 Electrode GDT Graphical Symbol
• RoHS compliant and
Lead-free
• GHz working frequency
• Excellent stability on
multiple pulse duty cycle
• Excellent response to
fast rising transients.
• Ultra Low Insertion Loss
• 2.5KA surge capability
tested with 8/20μS
pulse as defined by IEC
61000-4-5
Applications
• Ultra small devices
offered in a variety of
mounting lead forms
• Non-Radioactive
• Low capacitance (<1pF)
• Voltage Ranges 90V to
600V
• UL recognized
• Conforms to ITU-T K12,
IEC 1000-4-5
•
Communication
•
•
•
•
•
equipment
CATV equipment
Test equipment
Data lines
Power supplies
Telecom SLIC
protection
• Broadband equipment
• ADSL equipment,
including ADSL2+
• XDSL equipment
• Satellite and CATV
equipment
• General telecom
equipment
©2010 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.
13
Revised: July 6, 2010
CG5 and SL0902A Series
Gas Discharge Tube (GDT) Products
CG5 and SL0902A Series
Electrical Characteristics
Device Specifications
(at 25°C)
DC Breakdown
in Volts
(@100V/s)
Life Ratings
Surge
Life
(10/1000µs)
Impulse
Impulse Insulation Capaci-
Breakdown Breakdown Resistance tance
in Volts
In Volts
(@1MHz)
(@100V/µs)
(@1 Kv/µsec)
Nominal Nominal
AC
Max
Impulse
AC
Dischage Impulse
Discharge Discharge Current Discharge
Current
Current
(9 cycle @50Hz)
Current
(8/20µs)
(10x1sec
@50-60Hz)
(1 Application
@ 10/350µs)
Part Number
SL0902A90
CG590
CG5145
CG5150
SL0902A230
CG5230
CG5250
CG5270
SL0902A350
CG5350
CG5400
SL0902A420
CG5550
SL0902A600
CG5600
MIN
TYP
MAX
MAX
MIN
MAX
72
116
120
184
200
216
280
320
336
440
480
90
145
150
230
250
270
350
400
420
550
600
108
174
180
276
300
324
420
480
504
660
720
550
550
550
550
600
650
800
900
900
1350
1350
700
650
650
10 Ω
(at 50V)
10
300 shots
(@100A)
10 shots
(@5kA)
5
5A
10 A
0.5kA
900
1000
1500
10
10
Ω
(at 100V)
1.5 pf
300 shots
(@100A)
10 shots
(@5kA)
5
5A
10 A
0.5kA
Product Characteristics
CG5xxxLS (Outline 500), CG5xxxxLTR
& CG5350L-03TR (Outline 502), and
CG5xxxL-02 (Outline 503):
Device
Nickel Plated 2–5 Microns Wire Tin Plated
17
.5±12.5 Microns Construction Ceramic
Insulator.
CG5xxx (Outline 501), and CG5xxxMS
& SL0902AxxxSM (Outline 505):
Device Tin Plated 17
.5±12.5 Microns
Construction Ceramic Insulator.
Product Marking
Glow to arc
transition current
Glow Voltage
Storage and
Operational
Temperature
LF Logo, Voltage and date code
< 0.5Amps
140 Volts
-40 to +90
Materials
Voltage vs. Time Characteristic
Max dynamic breakover
voltage
Typical Insertion Loss
@ 1.0 GHz = 0.01 dB
@ 1.4GHz = 0.1 dB
@ 1.8 GHz = 0.53 dB
@ 2.1 GHz = 0.81 dB
@ 2.45 GHz= 1 dB
@ 2.8 GHz = 1.2 dB
Hold-over voltage
On-State voltage
Voltage
(V)
@ 3.1 GHz = 1.5 dB
@ 3.5 GHz = 2.1 dB
0
200
400
600
Time (ns)
800
1000
1200
CG5 and SL0902A Series
14
Revised: July 6, 2010
©2010 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.
CG5 and SL0902A Series
Gas Discharge Tube (GDT) Products
Device Dimensions
Outline 500 - CG5xxxLS
PROFILE VIEW
TOP VIEW
Outline 503 - CG5xxxL-02
(except CG5600L-02, see Outline 502)
PROFILE VIEW
TOP VIEW
5.00 ± 0.20
[0.197 ± 0.008]
5.00
± 0.20
[0.197 ± 0.008]
5.0 ± 0.2
[0.197 ± 0.008
5.30 ± 0.30
[0.209 ± 0.012]
40° ± 3
°
[0.118 ± 0.008]
0.004
3.0 ± 0.2
[0.197 ± 0.008]
5.0 ± 0.2
2 Surfaces
5.30 ± 0.30
0.40 ± 0.03
[0.209 ± 0.012]
[0.016 ± 0.0012]
0.80
[0.031]
[2.480 ± 0.079]
6.3 ± 2
0.80
DIA. TYP.
[0.031]
8.00 ± 0.30
[0.315 ± 0.012]
9.30 ± 0.30
[0.366 ± 0.012]
SOLDER PAD LAYOUT
Outline 505 - CG5xxxMS and SL0902AxxxSM
PROFILE VIEW
TOP VIEW
8.00
[0.315]
5.50
6.6 ± 0.2
[0.260 ± 0.008]
[0.216]
[0.212 ± 0.006]
5.4 ± 0.15
1.80
[0.071]
9.80
[0.386]
[0.02 ± 0.004 ]
0.5 ± 0.1
5.0 ± 0.2
[0.15]
[0.212 ± 0.006]
3.8
[0.197 ± 0.008]
5.4 ± 0.15
Outline 501 - CG5xxx
PROFILE VIEW
TOP VIEW
SOLDER PAD LAYOUT
[0.18]
4.50
[0.197 ± 0.006]
5.0 ± 0.15
5.10
[0.2]
[0.197 ± 0.008]
5.0 ± 0.2
[0.028]
0.70
Outline 502 - CG5xxxLTR
(also CG5350L-03TR, CG5600L-02)
PROFILE VIEW
TOP VIEW
0.60
DIA. TYP.
[0.024]
CG5L-03
[0.197 ± 0.008]
5.0 ± 0.2
CG5L &
CG5LTR (Outline 502)
0.80
DIA. TYP.
[0.024]
[0.197 ± 0.008]
[2.441 ± 0.079]
5.0 ± 0.2
62 ± 2
©2010 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.
15
Revised: July 6, 2010
CG5 and SL0902A Series
Gas Discharge Tube (GDT) Products
CG5 and SL0902A Series
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (Min to Max) (t
s
)
Average ramp up rate (Liquidus Temp
(T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – Free assembly
150°C
60 – 180 secs
3°C/second max
5°C/second max
217°C
60 – 150 seconds
260
+0/-5
T
P
T
L
Temperature
t
P
Ramp-up
Critical Zone
T
L
to T
P
200°C
T
S(max)
T
S(min)
Preheat
t
L
Ramp-down
t
S
time to peak temperature
(t 25ºC to peak)
25
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
°C
10 – 30 seconds
6°C/second max
8 minutes Max.
260°C
Soldering Parameters - Hand Soldering
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Soldering Parameters - Wave Soldering (Thru-Hole Devices)
300
Recommended Process Parameters:
Wave Parameter
Preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
Temperature (°C) - Measured on bottom side of board
280
260
240
220
200
180
160
140
120
100
80
60
40
20
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
10
20
30
40
50
60
70
80
90
0
0
Lead-Free Recommendation
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
280
°
C Maximum
2-5 seconds
Note: These devices are not recommended for IR
or Convection Reflow process.
Time (Seconds)
Preheat Time
Dwell Time
Cooling Time
CG5 and SL0902A Series
16
Revised: July 6, 2010
©2010 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.
CG5 and SL0902A Series
Gas Discharge Tube (GDT) Products
Part Numbering System and Ordering Information
CG5 xxx L TR
Series
CG5
SL0902A xxx SM
Series
SL0902A
Breakdown Voltage
90 = 90V
230 = 230V
350 = 350V
600 = 600V
Breakdown Voltage
90 = 90V
230 = 230V
350 = 350V
420 = 420V
Lead Option Code
(Blank) = Core Device (No Leads)
L
= Straight Leads
LS
= Shaped Leads
MS
= Surface Mount
Lead Option Code
SM
= Surface Mount
(Packaging Option Code is not applicable for SL0902A)
Packaging Option Code
(Blank) = Bulk (Applies to Core Devices Only)
TR
= Tape & Reel
Packaging
Part Number and Device Type
CG5xxx
CG5xxxLS
CG5xxxLTR
CG5xxxL-03TR**
CG5xxxL-02**
CG5xxxMS
SL0902AxxxSM
Core
Shaped Leads
Straight Axial Leads
Bent Radial Leads
Surface mount
Device Dimensions
Reference
Outline 501
Outline 500
Outline 502
Outline 503
Outline 505
Quantity and Packaging
Description
1000pcs/bag in bulk packaging
900pcs/reel in carrier and tape*
1000pcs/reel in tape and reel*
50pcs/tray in tray and cover
900pcs/reel in carrier and tape*
* For tape specifications and dimensions, please contact factory.
** Special order items not available for general sale. Please contact Littelfuse for details.
©2010 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.
17
Revised: July 6, 2010
CG5 and SL0902A Series
