SG300 Tubes Datasheet

SG300 Datasheet PDF, Equivalent


Part Number

SG300

Description

Gas Discharge Tubes

Manufacture

Littelfuse

Total Page 4 Pages
Datasheet
Download SG300 Datasheet


SG300
SG Series
Gas Discharge Tubes
SG Series
RoHS
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E128662
2 Electrode GDT Graphical Symbol
Additional Information
Datasheet
Resources
Samples
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
• 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 (<1pF)
• Voltage Ranges 75V to
600V
• UL recognized
• Conforms to ITU-T K12,
IEC 1000-4-5
• Square Outline
Applications
Communication
equipment
• CATV equipment
• Test equipment
• Data lines
• Power supplies
• Telecom SLIC
protection
• Broadband equipment
• ADSL equipment,
including ADSL2+
• XDSL equipment
• Satellite and CATV
equipment
• General telecom
equipment
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17

SG300
Gas Discharge Tubes
SG Series
Electrical Characteristics
Device Specifications (at 25°C)
Life Ratings
Part
Number
SG75
SG90
SG150
SG200
SG230
SG300
SG300Q
SG350
SG350Q
SG400
SG420
SG420Q
SG450Q
SG500Q
SG600Q
DC Breakdown Impulse Impulse Insulation Capaci-
in Volts
Breakdown Breakdown Resistance tance
(@100V/s)
in Volts In Volts
(@1MHz)
(@100V/µs)
(@1 Kv/µsec)
MIN TYP MAX
52 75 98
63 90 117
105 150 195
140 200 260
172 230 288
225 300 375
210 300 390
263 350 437
263 350 437
300 400 500
315 420 525
315 420 525
370 450 500
400 500 600
450 600 750
MAX
500
500
500
550
650
700
580
750
600
800
800
650
680
950
1100
650
600
600
700
800
850
650
900
700
950
1000
750
750
1050
1200
MIN
MAX
>1GΩ
(at 50VDC)
>1GΩ
(at 100VDC)
<1 pf
>1GΩ
(at 50VDC) <0.8 pf
<1 pf
>1GΩ
(at 100VDC)
<0.5 pf
<1 pf
Arc
Voltage
(@1A)
~10 V
~12 V
~20 V
~12 V
~10 V
~20 V
~20 V
~16 V
~20 V
Glow Glow Nominal Nominal Nominal
to Arc Voltage AC
Impulse Impulse
Transition
Discharge Discharge Discharge
Current
Current Current Current
(x10 @50Hz) (x10 @8/20µs) (10/1000µs
100 cycles)
~1.0 A ~60 V
2A
2.5 A
2kA
~0.5 A ~90 V
2A
~0.8 A
~140 V
~90 V
NA*
2A
10 A
~0.5 A
~140 V
~90 V
NA*
2A
1kA
~60 V
2A
<1.0 A
NA*
~0.1 A
<0.5 A
~140 V
1A
2A
* Specification is not applicable for quick response (SGxxxQ) version of product
Product Characteristics
Materials
Storage and
Operational
Temperature
Device Tin Plated 17.5±12.5 Microns
Construction Ceramic Insulator.
-40 to +90 °C
Typical Insertion Loss
@ 1.0 GHz = 0.01 dB
@ 1.4GHz = 0.1 dB
@ 1.8 GHz = 0.53 dB
@ 2.1 GHz = 0.81 dB
@ 2.45 GHz= 1 dB
@ 2.8 GHz = 1.2 dB
@ 3.1 GHz = 1.5 dB
@ 3.5 GHz = 2.1 dB
Voltage vs. Time Characteristic
Max dynamic breakover
voltage
Hold-over voltage
On-State voltage
0 200 400 600 800 1000 1200
Time (ns)
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/17


Features SG Series Gas Discharge Tubes SG Series RoHS Agency Approvals AGENCY AGENCY FILE NUMBER E128662 2 Electrode GDT G raphical Symbol Additional Information Datasheet Resources Samples Descri ption Littelfuse SG series GDT offers h igh surge ratings in a miniature packag e. 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. Th e capacitance does not vary with voltag e, and will not cause operational probl ems with ADSL2+, where capacitance vari ation across Tip and Ring is undesirabl e. These devices are extremely robust a nd are able to divert a 1000A pulse wit hout destruction. Features • RoHS c ompliant and Lead-free • GHz working frequency • Excellent stability on mu ltiple pulse duty cycle • Excellent r esponse to fast rising transients. • Ultra Low Insertion Loss • 1-2KA surg e capability tested with 8/20μS pulse as defined by IEC 61000-4-5 • Ultra small devices offered in a variety of mou.
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