Datasheet

Gas Discharge Tubes
SL1021A/B Series
SL1021A/B Series
RoHS
Description
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E128662
3 Electrode GDT Graphical Symbol
a
b
a = TIP
b = RING
e = GROUND
(center electrode)
e
Features
•RoHS compliant
•Low insertion loss
•Excellent response to
fast rising transients
•Ultra low capacitance
Product Characteristics
•10KA (A suffix devices) /
20KA (B suffix devices)
surge capability tested
with 8/20μs pulse as
defined by IEC 61000-4-5
•Available with thermal
failsafe option (add ‘F’
suffix to part number)
Applications
SL1021:
•Broadband equipment
•ADSL equipment
•XDSL equipment
•Satellite and CATV
equipment
•Splitters
•General telecom
equipment
GDT circuit protection devices dissipate electrical
surge energy safely within a contained plasma gas.
Commonly used to help protect sensitive telecom
and networking equipment and lines, GDTs protect
from damage that may result from lightning strikes
and equipment switching operations.
The Littelfuse GDT series described in this document
are available in a variety of leaded and surface mount
forms and offered with and without optional fail-safe
clip. Please refer to the electrical specifications,
dimension and packaging options section of this
document for additional information.
SL1021A/B Series:
SL1021A/B series GDTs are designed to offer high
levels of performance on fast rising transients in the
range of 100V/μS to 1KV/μS, which are those most
likely created by induced lightning disturbances.
These devices feature ultra low capacitance (typically
1.5pF or less) and are extremely robust with SL1021A
devices able to divert a 10,000 Amp pulse without
destruction, and SL1021B suffix devices able to divert
a 20,000 Amp pulse without destruction.
These series offer optimized internal geometry which
provide low insertion loss at high frequencies, ideal
for the protection of broadband and other high speed
transmission equipment.
•Telecom network
interfaces
• Telephone line cards
• Repeaters
• Modems
• Line test equipment
Materials
Dull Tin Plate 17.5 ± 12.5 Microns.
with ceramic insulator
Product Marking
‘LF’ mark, voltage& date code:
SL1021A - Red/White text
SL1021B - Blue/White text
Glow to arc
transition current
~ 1Amp
Glow Voltage
~60-200 Volts
Storage and Operation
Temperature
-40 to +90°C
Transverse Voltage
(Delay Time)
< 0.2µSec (Tested to ITU-T Rec. K.12)
Arc Voltage
~10 to 35 Volts
Holdover Voltage
<150mS (Tested to ITU-T Rec. K.12)
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
Gas Discharge Tubes
SL1021A/B Series
Electrical Characteristics
Device Specifications (at 25°C)
Part
Number
DC Voltage
100V/Sec.
DC
Voltage
100 V/
μSec.
MIN
TYP
MAX
SL1021B075
60
75
90
SL1021A090
SL1021B090
72
90
108
SL1021A145
SL1021B145
116
145
174
SL1021A150
SL1021B150
120
150
180
SL1021A200
150
200
250
SL1021A230
SL1021B230
184
230
276
450
SL1021A250
SL1021B250
200
250
300
500
SL1021A260
SL1021B260
210
260
310
550
DC
Voltage
1kV/
μSec.
Life Ratings
Capacitance
(@1Mhz)
650
Insulation
Resistance
MIN
AC
Current
50Hz
1Sec.x101
Surge
Current
8/20μSec
x101
Max
Single
Surge
8/20μSec1
>1010 Ω
(at 50V)
Max Single
Surge
10/350μSec1
Surge Life
10/1000
μSecx3001
4kA2
5kA3
500
600
650
700
SL1021A300
SL1021B300
240
300
360
650
850
SL1021A350
SL1021B350
280
350
420
700
900
SL1021A400
SL1021B400
320
400
480
SL1021A420
SL1021B420
850
950
345
420
500
SL1021A450
SL1021B450
360
450
540
900
1000
SL1021A500
SL1021B500
400
500
600
950
1100
SL1021A600
480
600
720
1000
1200
<1.5pF
NOTES:
1. Total current through centre electrode, tested in accordance with ITU-T Rec K.12
2.SL1021A series
3.SL1021B series
Additional Information
Datasheet
SL1021A
Resources
SL1021A
Samples
SL1021A
Datasheet
SL1021B
Resources
SL1021B
Samples
SL1021B
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
10Amps
>10 Ω
(at 100V)
10
10kA2
20kA3
15kA2
25kA3
200Amps
2.5kA
5kA3
2
Gas Discharge Tubes
SL1021A/B Series
Voltage vs. Time Characteristic
Time vs. Current for Failsafe
60
Max dynamic breakover
voltage
SL102xA with Failsafe
SL102xB or PMT8 500 Volt Higher Melting Point Solder
SL102xB or PMT8 350 Volt Higher Melting Point Solder
SL102xB or PMT8 90 Volt Higher Melting Point Solder
30
20
Voltage
(V)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Hold-over voltage
On-State voltage
0.5 1
2
5
10
15
0
30
200
400
600
800
1000
1200
Time (ns)
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
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
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
260
Time within 5°C of actual peak
Temperature (tp)
10 – 30 seconds
tL
Ramp-down
Preheat
TS(min)
25
Peak Temperature (TP)
+0/-5
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
Average ramp up rate (Liquidus Temp
(TL) to peak
Reflow
tP
TP
Temperature
Reflow Condition
tS
time to peak temperature
(t 25ºC to peak)
Time
°C
Ramp-down Rate
6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
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)
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
Note: Surge Arrestors with a Failsafe mechanism should be
individually examined after soldering
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
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
Type 04 / R
11.8
[0.464]
9.0
[0.354]
10.10
[0.398]
8.1.
[0.319]
Gas Discharge Tubes
0.3mm
Minimum
Gap
SL1021A/B Series
Type 01 / C
[0.354]
10.10
[0.398]
8.1
[0.319]
0.3mm
Minimum
Gap
9.9
[0.354]
9.9
[0.354]
15
[0.590]
16.8
[0.661]
4.4
[0.173]
1.0 DIA.
[0.039]
4.4± 0.3
[0.173± 0.12]
NOTE: Failsafe option dimensions shown in green.
12.4 ± 1
[0.488 ± 0.039]
Mounting Area
9.0
[0.354]
Shaped
Leaded Devices:
11.8
Type 05Radial
/P
[0.464]
12.4
±1
10.10
[0.488
±12.4
0.039]
±1
[0.398]
[0.488 ± 0.039]
11.8
12.4
±1
[0.464]
11.8
[0.488
± 0.039]
[0.464]
10.10
11.8
[0.398]
10.10
[0.464]
[0.398]
10.10
[0.398]
Type 04 / R
Type0.3mm
04 / R
Minimum
Gap
Type 04
/R
0.3mm
Minimum
0.3mm
Gap
Minimum
15
Gap
0.3mm
[0.590]
Minimum
Gap
4.4 15
[0.590] 15
[0.173]
[0.590]
15
[0.590]
4.4 5.5± 0.3
[0.216±
[0.173]
4.40.12]
[0.173]
4.4
[0.173]
4.4± 0.3
[0.173± 0.12]
4.4± 0.3
[0.173± 0.12]
4.4± 0.3
[0.173± 0.12]
Type 05 / P
0.3mm
Minimum
0.3mm
Gap
Minimum
Gap
0.3mm
0.3mm
Minimum Minimum
Gap
Gap
9.9
[0.354]
9.9
[0.354]
9.9
[0.354]
16.8 9.9
[0.661] [0.354]
8.1.
[0.319] Area
Mounting
Mounting
Area
9.0
[0.354]9.0
[0.354]Area
Mounting
8.1.
9.0
[0.319]
8.1.
[0.354]
[0.319]
8.1.
[0.319]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
8.3 +0.3/-0.0
[0.327
+0.019/-0.00]
8.0 +0.3/-0.1
[0.315
+0.019/-0.004]
Core Devices:
Mounting Area
SIDE VIEW
TOP VIEW
11.8
Mounting
Area
9.0
[0.464]
11.8
[0.354]9.0
[0.464]
[0.354]Area
2.2 ± 0.0
10.10
Mounting
8.1
11.8
[0.087 ± 0.000]
[0.398]
10.10
9.0
[0.319]
8.1
[0.464]
[0.398]
1.2 ± 0.0
[0.354]
1.2 ± 0.0
0.3mm [0.047 ± 0.000]
[0.047 ± 0.000] [0.319]
10.10
Minimum
8.1
0.3mm
[0.398]
Gap
[0.319]
Minimum
Gap
0.3mm
Minimum
9.9
6.0
±
0.0
8.5
±
0.0
Gap
[0.354]
9.9
[0.236 ± 0.000]
[0.335 ± 0.000]
[0.354]
9.9
[0.354]
PROFILE VIEW
Type 01 / C
Type 01 / C
Type 01 / C
Mounting Area
Mounting
Area
9.0
[0.354]9.0
[0.354]Area
Mounting
Mounting
Area
8.1.
9.0
9.0
[0.319]
8.1.
[0.354] [0.354]
[0.319]
8.1.
8.1 DIA. MAX.
[0.319]
[0.319]
9.9
[0.354]
9.9
[0.354]
9.9
[0.354]
16.8 23.8
[0.937]
[0.661]
16.8
[0.661]
16.8
[0.661]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
1.0 DIA.
1.0 DIA..
[0.039] [0.039]
5.5± 0.3
[0.216±
5.5±0.12]
0.3
[0.216± 0.12]
5.5± 0.3
[0.216± 0.12]
[1.968 ± 50
0.118
± 3]
[1.968 ± 0.118 ]
11.8
50
±3
[0.464]
11.8
[1.968
±
0.118 ]
[0.464]
10.10
11.8
[0.398]
10.10
[0.464]
[0.398]
10.10
[0.398]
22
[0.866] 22
[0.866]
22
[0.866]
7.7 ± 0.3
[0.303 ±
0.019]
7.7
± 0.3
[0.303 ± 0.019]
7.7 ± 0.3
[0.303 ± 0.019]
8.3 +0.3/-0.0
[0.327
8.3 +0.3/-0.0
+0.019/-0.00]
[0.327
+0.019/-0.00]
8.3 +0.3/-0.0
[0.327
+0.019/-0.00]
14.7
[0.579]
Type 06 / Y
8.0 +0.3/-0.1
[0.315
8.0 +0.3/-0.1
+0.019/-0.004]
[0.315
Mounting Area
+0.019/-0.004]
9.0
8.0 +0.3/-0.1
[0.354]
[0.315
+0.019/-0.004]
8.1 DIA. MAX.
TOP VIEW [0.319]
TOP VIEW
11.8
[0.464]
PROFILE VIEW
PROFILE VIEW
0.3mm
Minimum
Gap
10.10
[0.398]
SIDE VIEW
SIDE VIEW
2.2 ± 0.0
SIDE VIEW
TOP VIEW
[0.087
2.2±±0.000]
0.0
[0.087 ±1.2
0.000]
± 0.0
[0.047
1.2±±0.000]
0.0
2.29.9
± 0.0
[0.047 ± 0.000]
[0.354]
[0.087
± 0.000]
1.2 ± 0.0
[0.047 ± 0.000]
PROFILE VIEW
1.2 ± 0.0
[0.047 ± 0.000]
1.2 ± 0.0
[0.047 ± 0.000]
1.2 ± 0.0
[0.047 ± 0.000]
15
6.0 ± 0.0
[0.590]
[0.236 ± 0.000]
6.0 ± 0.0
[0.236 ± 0.000]
6.0 ± 0.0
[0.236 ± 0.000]
6.35 ± 0.5
[0.25 ± 0.25]
16.8
[0.661]
8.5 ± 0.0
[0.335
8.5±±0.000]
0.0
[0.335 ± 0.000]
DIA.
8.51.0
± 0.0
[0.039]
[0.335
± 0.000]
10.75 ± 0.0
[0.42310.75
± 0.000]
± 0.0
[0.423 ± 0.000]
10.75
0.0
SOLDERING
PAD±LAYOUT
6.35
± 0.5
[0.423 ±PAD
0.000]
SOLDERING
LAYOUT
[0.25 ± 0.25]
Overall Product Space
DO NOT
ENCROACH
Overall
Product Space
DO NOT ENCROACH
Overall Product Space
DO NOT ENCROACH
SOLDERING PAD LAYOUT
Type 06 / Y
Type 06 / Y
Mounting Area
Mounting
Area
9.0
[0.354]9.0
[0.354]Area
Mounting
8.1 DIA. MAX.
9.0
[0.319]
8.1 [0.354]
DIA. MAX.
[0.319]
8.1 DIA. MAX.
[0.319]
23.8
[0.937]
23.8
[0.937]
23.8
[0.937] 1.0 DIA..
[0.039]
1.0 DIA..
[0.039]
1.0 DIA..
[0.039]
Type “R” is available for SL1021B075 device only.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
Type 60
Type 60
Overall Product Space
DO NOT ENCROACH
SOLDERING PAD LAYOUT
10.0 ± 0.3
[0.394 10.0
± 0.019]
± 0.3
[0.394 ± 0.019]
Ø7.0 ± 0.1
±±0.3
[0.27510.0
± 0.004]
Ø7.0
0.1
[0.394
[0.275 ±± 0.019]
0.004]
Ø7.0 ± 0.1
[0.275 ± 0.004]
Straight
Radial Leaded Devices:
Type 60
4.4± 0.3
[0.173±
4.4±0.12]
0.3
[0.173± 0.12]
4.4± 0.3
[0.173± 0.12]
Type 14"T"
/ XLeaded Devices:
Straight
Type 14 / X
50 ± 3
0.3mm
Minimum
0.3mm
Gap
Minimum
Gap
0.3mm
Minimum
Gap
Ø7.0 ± 0.1
[0.275 ± 0.004]
10.75 ± 0.0
[0.423 ± 0.000]
16.8
[0.661]
5.5± 0.3 16.8
[0.661]
[0.216± 0.12]
16.8
[0.661]
12.4 ± 1
[0.488 ±12.4
0.039]
±1
[0.488 ± 0.039]
11.8
50 ± 3 [0.464]
12.4
±1
11.8
[1.968 ± 0.118[0.488
] [0.464]
± 0.039]
10.10
11.8
11.8
[0.398]
10.10
[0.464]
[0.464]
[0.398]
10.10
10.10
[0.398]
[0.398]
15
[0.590] 15
[0.590]
15
[0.590]
22 4.4
[0.173] 4.4
[0.866]
[0.173]
4.4
[0.173]
5.5± 0.3
[0.216± 0.12]
5.5± 0.3
[0.216± 0.12]
5.5± 0.3
[0.216± 0.12]
Type 14 / X
7.7 ± 0.3
[0.303 ± 0.019]
4.4± 0.3
[0.173± 0.12]
Device Dimensions
Type 14 / X
Type 05 / P
Type 05 / P
10.0 ± 0.3
[0.394 ± 0.019]
Type 60
Type 06 / Y
0.3mm
Minimum
0.3mm
Gap
Minimum
Gap
0.3mm
Minimum
Gap
15
[0.590] 15
[0.590]
15
[0.590]
6.35 ± 0.5
[0.25 ±6.35
0.25]
± 0.5
[0.25 ± 0.25]
6.35 ± 0.5
[0.25 ± 0.25]
14.7
[0.579]
14.7
[0.579]
11.814.7
[0.464]
11.8
[0.579]
[0.464]
10.10
11.8
[0.398]
10.10
[0.464]
[0.398]
10.10
[0.398]
Mounting Area
Mounting
Area
9.0
[0.354]9.0
[0.354]Area
Mounting
8.1 DIA.
MAX.
9.0 MAX.
[0.319]
8.1 DIA.
[0.354]
[0.319]
8.1 DIA. MAX.
[0.319]
9.9
[0.354]
9.9
[0.354]
9.9
[0.354]
16.8
[0.661]
16.8
[0.661]
16.8
[0.661]
6.35 ± 0.5
[0.256.35
± 0.25]
± 0.5
[0.25 ± 0.25]
6.35 ± 0.5
[0.25 ± 0.25]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
1.0 DIA.
[0.039]
Gas Discharge Tubes
58
~2
SL1021A/B Series
~58
Box (Cardboard)
Tray (PET)
for 50 Pcs.
Sponge (PE Form)
Part Numbering System and Ordering Information
SL102x x xxx x x
PMT8 xxx x x
Packaging
For 'SL1021A/B' device type C, R, P, Y packing
Series
Series
PMT8
SL1021
SL1024
Surge Capability
35
A = 10kA
B = 20kA
~2
Tray, Cover (PET)
Configuration Code
(See Device Dimensions section)
C
Y
R
X
P
(See Device Dimensions section)
01
10
04
14
05
60
06
Option Code
Option Code
Blank = No failsafe
F or G = With Failsafe
Box (Cardboard)
~55
Configuration Code
090 = 90V
230 = 230V
250 = 250V
350 = 350V
400 = 400V
Tray, Bottom (PET)
for 100 Pcs.
PE Form
Blank = No Failsafe
F = With Failsafe
For 'SL1021A/B' device type X packing
58
~2
Box (Cardboard)
~58
300 = 300V
350 = 350V
400 = 400V
420 = 420V
450 = 450V
500 = 500V
600 = 600V
Breakdown Voltage
Tray (PET)
for 50 Pcs.
Sponge (PE Form)
~135
35
Device~2Type
Description
Quantity
Type C
100pcs/tray x 5 trays per carton
500
Type R
100pcs/tray x 5 trays per carton
500
Type P
100pcs/tray x 5 trays per carton
500
Type Y
100 Pcs.
100pcs/tray x 5 traysforper
carton
500
~55
Breakdown Voltage
090 = 90V
145 = 145V
150 = 150V
200 = 200V
230 = 230V
250 = 250V
260 = 260V
~135
Type X
Box (Cardboard)
Tray, Cover (PET)
Tray, Bottom (PET)
PE Form
50pcs/tray x 5 trays per carton
250
* Please contact the factory for further packaging information.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15