Gas Discharge Tube (GDT) Products
SG Series
SG Series
Description
Littelfuse SG series GDT offers high surge ratings
in a miniature package. It’s designed for surface
mounting on PCB with small size 4.5x3.2x2.7mm.
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 1000A pulse without
destruction.
Features
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E128662
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
• 1-2KA surge capability
tested with 8/20μS
pulse as defined by IEC
61000-4-5
• Ultra small devices
offered in a variety of
mounting lead forms
• Non-Radioactive
• Low capacitance (1GΩ
(at 50VDC)
>1GΩ
(at 100VDC)
SG200
140 200 260
550
700
SG230
SG300
SG300Q
SG350
SG350Q
SG400
SG420
SG420Q
SG450Q
SG500Q
SG600Q
172
225
210
263
263
300
315
315
370
400
450
650
700
580
750
600
800
800
650
680
950
1100
800
850
650
900
700
950
1000
750
750
1050
1200
230
300
300
350
350
400
420
420
450
500
600
288
375
390
437
437
500
525
525
500
600
750
(x10 @50Hz)
(x10 @8/20μs)
2A
2kA
MAX
~10 V
~1.0 A
(10/1000μs
100 cycles)
~60 V
1GΩ
(at 50VDC)
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