Littelfuse SL1026 Series - Manual

©2009 Littelfuse, Inc.
Gas Discharge Tube (GDT) Products
33
Revised: November 10, 2009
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.
33
Revised: November 10, 2009
SL1026 Series
SL1026 Series
Specifications are subject to change without notice.
Refer to www.littelfuse.com/series/SL1026.html for current information.
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.
Features
• 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.
• 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.
Applications
• Signaling equipment.
• Communication
equipment
• Control gear.
• Trackside cabinets.
• Cell phone base
stations
SL1026 Series
3 Electrode GDT Graphical Symbol
AGENCY AGENCY FILE NUMBER
®
E128662
Agency Approvals
a
e
b
a = TIP
b = RING
e = GROUND
(centre electrode)
®
Electrical Characteristics
Part Number*
DC Voltage
100 V/sec 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)
1,2 Max
Single
Surge
8/20μSec
(kAmps)
1 Max Single
Surge
10/350μSec
(kAmps)
1 150(+) and 150(-)
10/1000μSec
(Amps) MIN MAX
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