Surface Mount 2-Electrode Gas Discharge Tube (GDT)
Revision June 25, 2021
1 / 4
@SOCAY Electronics Corp., Ltd. 2021
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SC1812 Series
SOCAY Electronics Corp., Ltd. www.socay.com
Gas discharge Tubes (GDT) are classical components for
protecting the installations of the telecommunications. It is
essential that IT and telecommunications systems -with their
high-grade but sensitive electronic circuits - be protected by
arresters.
The 1812 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 500A
pulse in a miniature package 1812 without destruction.
Non-Radioactive
RoHS compliant
Ultra low capacitance (<1.0 pF)
UL recognized
Excellent response to fast rising transients
2KA surge capability tested with 8/20μs
pulse as defined by IEC 61000-4-5
Square Outline
AGENCY
AGENCY FILE NUMBER
E341061
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
ESD protection
Materials
Dull Tin-plated
Product Marking
Without
Storage and
Operational
Temperature
-40 to +90°C
Weight
~180mg
Climatic category
(IEC 60068-1)
40/ 90/ 21
Features
Schematic Symbol
Agency Approvals
Description
Product Characteristics
Applications
Surface Mount 2-Electrode Gas Discharge Tube (GDT)
Revision June 25, 2021
2 / 4
@SOCAY Electronics Corp., Ltd. 2021
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SC1812 Series
SOCAY Electronics Corp., Ltd. www.socay.com
Part Number
DC
Spark-over
Voltage
Maximum Impulse
Spark-over Voltage
Minimum
Insulation
Resistance
Maximum
Capacitance
Arc
Voltage
Nominal
Impulse
Discharge
Current
@100V/S
@100V/μs
@1KV/μs
@1MHz
@1A
@8/20μs
±5 times
SC1812-75CSMD
75V±30%
＜600V
＜700V
1 GΩ
(at 50V DC)
＜1.0pF
~15V
2 KA
SC1812-90CSMD
90V±20%
＜600V
＜700V
1 GΩ
(at 50V DC)
＜1.0pF
~15V
2 KA
SC1812-150CSMD
150V±20%
＜600V
＜700V
1 GΩ
(at 50V DC)
＜1.0pF
~15V
2 KA
SC1812-200CSMD
200V±20%
＜600V
＜750V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-230CSMD
230V±20%
＜600V
＜750V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-300CSMD
300V±20%
＜800V
＜900V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-350CSMD
350V±20%
＜800V
＜900V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-400CSMD
400V±20%
＜900V
＜1000V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-420CSMD
420V±20%
＜900V
＜1000V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-470CSMD
470V±20%
＜900V
＜1000V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
SC1812-600CSMD
600V±20%
＜1100V
＜1200V
1 GΩ
(at 100V DC)
＜1.0pF
~15V
2 KA
Notes:
1. Terms in accordance with ITU-T K.12 and GB/T 9043-2008
2. At delivery AQL 0.65 level Ⅱ, DIN ISO 2859
Device Dimensions (Unit: mm)
Electrical Characteristics
Recommended pad outline