Datasheet

Gas Discharge Tubes
SL1026 Series
SL1026 Series
RoHS
Description
The SL1026 Series is a heavy-duty transient
suppresser using Gas Plasma technology. In
response to transients that exceed the device's
breakover voltage, the device changes from a very
high impedance state to a low impedance state to
conduct harmful current away from the protected
system. The SL1026 is designed to protect electrical
and electronic equipment such as communications,
control and railway systems. Carefully designed
geometry ensures against short circuiting if a failure
occurs due to conditions and events beyond the
design criteria. Optional electrical mounting clip (part
SL1053 ) is available to aid mounting and connection.
3 Electrode GDT Graphical Symbol
a
a = TIP
b = RING
e = GROUND
(centre electrode)
b
Features
e
Additional Information
Datasheet
Resources
•Will protect against
capacitor discharge
voltage transient
waveforms as specified
in RIA 12.
•Will protect against
double exponential
voltage transient
waveforms as specified
in IEC 571.
•RoHS compliant
•55 kA surge capability
(single shot) tested with
8/20μS pulse as defined
by IEC 61000-4-5
•40 kA surge capability
(repetitive)
•Will protect against
Trapezoidal waveforms
as specified in RIA 12.
Samples
Applications
•Trackside cabinets.
•Cell phone base
stations
•Signaling equipment.
•Communication
equipment
•Control gear.
Electrical Characteristics
DC Voltage
100 V/sec
Part Number*
MIN
MAX
DC
Voltage
1kV/µs
1
AC
Current
9 cycles
@50-60Hz
(Amps)
1
AC
Current
50Hz
1 sec x10
(Amps)
1
Surge
Current
8/20μSec
x 10
(kAmps)
Max
Single
Surge
8/20μSec
(kAmps)
1,2
Max Single
Surge
10/350μSec
(kAmps)
1
1
150(+) and 150(-)
10/1000μSec
(Amps)
SL1026-275
200
350
800
200
10
20
40
8
200
SL1026-400
300
500
900
200
10
20
40
8
200
SL1026-700
560
840
1300
200
10
20
40
8
200
NOTES:
End of life limits
-- DC: 50% of minimum initial DC breakdown voltage limit to 150% of maximum initial
DC breakdown voltage limit.
-- Impulse: less that 150% of initial impulse breakdown voltage limit.
1. Total current through center electrode, tested using SL1053B-NL holder
2. Exceeds capability of SL1053B-NL holder
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
Gas Discharge Tubes
SL1026 Series
Product Dimensions
Voltage vs. Time Characteristic
SL1026 GDT Series Profile
Max dynamic breakover
voltage
45.0 Max
22.0 Ref
Voltage
(V)
Ø8.7 Ø9.1
Max Max
Type 1053 Holder Profile
Hold-over voltage
On-State voltage
0
200
400
600
800
1000
1200
Time (ns)
Electrical Specifications
Insulation
Resistance
> 10GΩ at 100 Volts
Capacitance:
<=2.5pf, 1MHz 0 Volts Bias
Holdover Voltage:
<150mS, tested at 130 volts according to
ITU-T Rec. K.12 & REA PE 80
Arc Voltage:
~35 Volts, On State Voltage at 1 Amp
(Depending on Voltage Type)
Glow to Arc
Transition Current:
~1 Amp
Glow Voltage:
> 150 Volts, depending on Voltage
Type
Physical Specifications
Weight:
11g (0.388 oz.)
Materials:
Electrode Base: Nickel Iron Alloy
Electrode Plating: Nickel
Body: Ceramic
Part Marking:
Color coded body
SL1026-275: Black/Black
SL1026-400: Black/Yellow
SL1026-700: Black/Red
Storage and
Operating
Temperature:
-40°C to +90°C
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/06/15
All dimensions in mm
Part Numbering System
SL 1026 –
Voltage
Packaging
GDT devices are provided as bulk pack in poly bag -- 20 pieces per bag and 5 bags per carton.