Gas Discharge Tube (GDT) Products
SL1011A/B and SL1411A Series
SL1011A/B and SL1411A Series
Description
®
The SL1011A/B and SL1411A series provides high
levels of protection against fast rising transients
in the 100V/μs to 1kV/μs range usually caused by
lightning disturbances.
The SL1011A/B and SL1411A series offers low
capacitance (< 1.5pf) which provides low insertion
loss at high frequencies.
SL1011A offers 5kA protection without destruction
whereas the SL1011B and SL1411A offer 10kA surge
protection without destruction (maximum single
surge of 12kA @ 8/20μs).
Features
Agency Approvals
AGENCY
®
AGENCY FILE NUMBER
E128662
2 Electrode GDT Graphical Symbol
• RoHS compliant
• Low insertion loss
• Excellent response to
fast rising transients
• Ultra low capacitance
• 5kA (SL1011A) or 10kA
(SL1011B & SL1411A)
surge capability tested
with 8/20μs
pulse as defined by
IEC 61000-4-5
Applications
• Broadband equipment
• ADSL equipment
• 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.
47
Revised: June 28, 2010
SL1011A/B and SL1411A Series
Gas Discharge Tube (GDT) Products
SL1011A/B and SL1411A Series
Electrical Characteristics
Device Specifications
(at 25°C)
Impulse
Impulse Insulation Capaci-
DC Breakdown
Breakdown Breakdown Resistance tance
in Volts
1,2
in Volts
3
In Volts
(@100V/s)
(@1MHz)
(@100V/μs)
(@1kV/μs)
Life Ratings
Arc
Voltage
Surge
Life
Nominal
Impulse
Discharge
Current
(8/20μs)
Part Number
(on state
(@100A
Voltage)
10/1000μs)
@1Amp Min
TYP
Nominal
AC
Discharge
Current
(10x1s
@50-60Hz)
AC
Dischage
Current
(9 Cycles @
50Hz)
DC
Holdover
Voltage
4
Max Impulse
Discharge Current
(1 Application)
MIN
TYP
MAX
MAX
MIN
MAX
TYP
@ 8/20μs
@ 10/350μs
Notes:
1. At delivery AQL 0.65 level II, DIN ISO 2859
2. In ionized mode
3. Comparable to the silicon measurement Switching Voltage (Vs)
4. Tested according to ITU-T Rec. K.12 < 150 msecs.
Product Characteristics
Leaded Device:
Nickel-plated with Tin-
plated wires
Core and Surface Mount:
Dull Tin-plated
Littelfuse 'LF' Mark, voltage and date
code
Glow to Arc
Transition Current
Glow Voltage
Storage and
Operational
Temperature
< 0.5 Amps
~60 Volts
-40 to +90°C
Materials
Product Marking
SL1011A/B and SL1411A Series
48
Revised: June 28, 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.
Gas Discharge Tube (GDT) Products
SL1011A/B and SL1411A Series
Device Dimensions
For SL1011A/SL1011B series:
'A' Type Axial Lead Devices
'C' Type Core Devices
PROFILE VIEW
Ø0.8
[0.031]
TOP VIEW
TOP VIEW
Ø8.0 ± 0.2
[0.315 ± 0.0079]
PROFILE VIEW
SEMI–PROFILE VIEW
6.05 ± 0.2
[0.238 ± 0.0079]
6.05 ± 0.2
[0.238 ± 0.0079]
62 ± 2
For SL1411A series:
'A' Type Axial Lead Devices
'SM' Type Surface Mount Devices
PROFILE VIEW
Ø1.0
[0.039]
TOP VIEW
TOP VIEW
Ø8.0 ± 0.2
Ø8.0 ± 0.2
[0.315 ± 0.0079]
PROFILE VIEW
SEMI–PROFILE VIEW
8.3 ± 0.1
4 [0.157]
+ 0.10
Ø8.0 – 0.30
0.0039
[0.315 + 0.0118 ]
–
5.55
[0.219]
6.05 ± 0.2
[0.238 ± 0.0079]
Ø8.3 ± 0.15
6.05 ± 0.2
[0.238 ± 0.0079]
62 ± 2
9.
Ø
30
±
0.
2
0.5 ± 0.1
SOLDER PAD LAYOUT
1.30 [0.051]
'C' Type Core Devices
7.00 [0.276]
TOP VIEW
+ 0.10
Ø8.00 – 0.30
0.0039
[0.315 + 0.0118 ]
–
PROFILE VIEW
+ 0.20
6.05 – 0.15
0.0079
[0.238 + 0.0059 ]
–
SEMI–PROFILE VIEW
5.40
[0.213]
©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.
+ 0.10
Ø8.00 – 0.30
49
Revised: June 28, 2010
SL1011A/B and SL1411A Series
Gas Discharge Tube (GDT) Products
SL1011A/B and SL1411A 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 seconds
3°C/second max.
5°C/second max.
217°C
60 – 150 seconds
260
+0/-5
T
P
Ramp-up
t
P
Critical Zone
T
L
to T
P
Temperature
200°C
T
L
T
S(max)
Preheat
t
L
Ramp-down
T
S(min)
t
S
25
time to peak temperature
(t 25ºC to peak)
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 - 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
140
150
240
100
110
120
130
160
170
180
190
200
210
220
230
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
Time
(Seconds)
Preheat
Time
Dwell
Time
Cooling
Time
Soldering Parameters - Hand Soldering
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
SL1011A/B and SL1411A Series
50
Revised: June 28, 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.
Gas Discharge Tube (GDT) Products
SL1011A/B and SL1411A Series
Packaging Dimensions
For 'A' Type Axial Lead Items
Dimensions are in millimeters [and inches]
< 1.2 Max. Lead Bend
Dimensions are in millimeters [and inches]
254.0 - 356.0
[10.0 - 14.0]
< 0.7 Max.
52.4
+2
–1
+0.079
[2.063
–0.039
]
22.8
[0.898]
77.0 Max.
[3.03]
Direction of Feed
6±1
[0.236 ± 0.039]
10 ± 0.5 Pitch
[0.394 ± 0.020]
For 'SM' Type Surface Mount Items (SL1411A series only)
Dimensions are in millimeters [and inches]
Dimensions are in millimeters [and inches]
275.0
[10.83]
10x4 ± 0.1 = 40 ± 0.2
[10x0.157 ± 0.004 = 1.575 ± 0.008]
0.4 ± 0.05
[0.016 ± 0.002]
1.75 ± 0.1
[0.069 ± 0.004]
1.5 DIA. MAX.
[0.059]
4 ± 0.1
[0.157 ± 0.004]
76.0
[2.99]
100.0
[3.94]
25.0
[0.98]
8.5 ± 0.1
[0.335 ± 0.004]
7.5 ± 0.1
[0.295 ± 0.004]
16 +0.3 / -0.1
[0.630 +0.012 / -0.004]
1.5 DIA. MAX.
[0.059]
17.7
[0.697]
Direction of Feed
8.6 ± 0.1
[0.339 ± 0.004]
12 ± 0.1
[0.472 ± 0.004]
For 'C' Type Core Items: Packed in plastic bag (500 pcs)
©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.
51
Revised: June 28, 2010
SL1011A/B and SL1411A Series
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