SC1812-420CSMD [SOCAY]
Surface Mount 2-Electrode Gas Discharge Tube (GDT);
| 型号： | SC1812-420CSMD |
| 厂家： | 
Socay Electornics Co., Ltd. |
| 描述： | Surface Mount 2-Electrode Gas Discharge Tube (GDT) |
| 文件： | 总4页 (文件大小：1288K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Surface Mount 2-Electrode Gas Discharge Tube (GDT)
SC1812 Series
Description
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+,
Schematic Symbol
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.
Agency Approvals
AGENCY
Features
Non-Radioactive
AGENCY FILE NUMBER
RoHS compliant
Ultra low capacitance (<1.0 pF)
UL recognized
E341061
Excellent response to fast rising transients
2KA surge capability tested with 8/20μs
pulse as defined by IEC 61000-4-5
Square Outline
Applications
Product Characteristics
Communication equipment
Materials
Dull Tin-plated
CATV equipment
Test equipment
Product Marking
Without
Data lines
Storage and
Operational
Temperature
Power supplies
-40 to +90°C
Telecom SLIC protection
Broadband equipment
ADSL equipment, including ADSL2+
XDSL equipment
Weight
~180mg
Climatic category
(IEC 60068-1)
40/ 90/ 21
Satellite and CATV equipment
General telecom equipment
ESD protection
SOCAY Electronics Corp., Ltd.
www.socay.com
@SOCAY Electronics Corp., Ltd. 2019
Revision January 4, 2019
1 / 4
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount 2-Electrode Gas Discharge Tube (GDT)
SC1812 Series
Device Dimensions
(Unit: mm)
Recommended pad outline
Electrical Characteristics
Nominal
Impulse
Discharge
Current
DC
Spark-over
Voltage
Maximum Impulse
Spark-over Voltage
Maximum
Capacitance
Arc
Voltage
Minimum
Insulation
Resistance
Part Number
@8/20μs
±5 times
@100V/S
@100V/μs
@1KV/μs
@1MHz
@1A
1 GΩ
(at 50V DC)
SC1812-90CSMD
SC1812-150CSMD
SC1812-200CSMD
SC1812-230CSMD
SC1812-300CSMD
SC1812-350CSMD
SC1812-400CSMD
SC1812-420CSMD
SC1812-470CSMD
SC1812-400CSMD+
SC1812-600CSMD
90V±20%
150V±20%
200V±20%
230V±20%
300V±20%
350V±20%
400V±20%
420V±20%
470V±20%
＞400V
＜600V
＜600V
＜600V
＜600V
＜800V
＜800V
＜900V
＜900V
＜900V
＜900V
＜1100V
＜700V
＜700V
＜750V
＜750V
＜900V
＜900V
＜1000V
＜1000V
＜1000V
＜1000V
＜1200V
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
＜1.0pF
~15V
~15V
~15V
~15V
~15V
~15V
~15V
~15V
~15V
~15V
~15V
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
2 KA
1 GΩ
(at 50V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
1 GΩ
(at 100V DC)
600V±20%
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
SOCAY Electronics Corp., Ltd.
www.socay.com
@SOCAY Electronics Corp., Ltd. 2019
Revision January 4, 2019
2 / 4
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount 2-Electrode Gas Discharge Tube (GDT)
SC1812 Series
Electrical Rating
Item
Test Condition / Description
Requirement
DC Spark-over Voltage
The voltage is measured with a slowly rate of rise dv / dt=100V/s
Impulse Spark-over
Voltage
The maximum impulse spark-over voltage is measured with a rise time of
dv / dt=100V//μs or 1KV/μs
The resistance of gas tube shall be measured each terminal each other terminal,
please see above spec.
Insulation Resistance
Capacitance
The capacitance of gas tube shall be measured each terminal to each other
terminal.
Test frequency :1MHz
The maximum current applying a waveform of 8/20μs that can be applied across
the terminals of the gas tube. One hour after the test is completed, re-testing of the
DC spark-over voltage does not exceed ±30% of the nominal DC spark-over
voltage. Dwell time between pulses is 3 minutes.
To meet
the specified
value
I
1.0
0.9
Nominal Impulse
Discharge Current
0.5
0.1
0.0
T
8μsec
30% Max
20μsec
Recommended soldering profile
Reflow Condition
Pb - Free assembly
150°C
-Temperature Min (Ts(min)
)
-Temperature Max (Ts(max)
- Time (min to max) (ts)
Pre Heat
)
200°C
TP
Critical Zone
60 -180 Seconds
Ramp-up
TL to TP
TL
Average ramp up rate ( Liquidus Temp TL)
to peak
3°C/second max
TS(max)
TS(max) to TL - Ramp-up Rate
5°C/second max
217°C
Ramp-down
- Temperature (TL) (Liquidus)
Reflow
TS(min)
- Time (min to max) (ts)
60 -150 Seconds
260 +0/-5°C
Preheat
Peak Temperature (TP)
25
Time within 5°C of actual peak
Temperature (tp)
Time to peak temperature
10 - 30 Seconds
Time
(t 25℃ to peak)
Ramp-down Rate
6°C/second max
8 minutes Max
260°C
Time 25°C to peak Temperature (TP)
Do not exceed
SOCAY Electronics Corp., Ltd.
www.socay.com
@SOCAY Electronics Corp., Ltd. 2019
Revision January 4, 2019
3 / 4
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount 2-Electrode Gas Discharge Tube (GDT)
SC1812 Series
Part Numbering
S C 1 8 1 2 – X X X C S M D
SMD, Surface Mount
8/20μs Level
C, 2KA
Nominal DC Spark-over Voltage
90 = 90V
300=300V
350=350V
400=400V
420=420V
470=470V
600=600V
150 = 150V
200 = 200V
230 = 230V
Series
Tape and Reel Dimensions
(Unit: mm)
Packaging
Part Number
Description
Quantity
SC1812-XXXCSMD
12mm Tape & 13″ Reel
2500 PCS
Cautions and Warnings
Gas discharge tubes (GDT) must not be operated directly in power supply networks.
Gas discharge tubes (GDT) may become hot in case of longer periods of current stress (danger of burning).
Gas discharge tubes (GDT) may be used only within their specified values. In the event of overload, the head contacts may
fail or the component may be destroyed.
Damaged Gas discharge tubes (GDT) must not be re-used.
SOCAY Electronics Corp., Ltd.
www.socay.com
@SOCAY Electronics Corp., Ltd. 2019
Revision January 4, 2019
4 / 4
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
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