UN1812-470CSMD Datasheet, PDF (3/4 Pages) Socay Electornics Co., Ltd. – Surface Mount 2-Electrode Gas Discharge Tube (GDT)

Surface Mount 2-Electrode Gas Discharge Tube (GDT)
UN1812 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
Insulation Resistance
Capacitance
The resistance of gas tube shall be measured each terminal each other terminal,
please see above spec.
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
Nominal Impulse
Discharge Current
Recommended soldering profile
TP
TL
TS(max)
Ramp-up
TS(min)
25
Preheat
Time to peak temperature
(t 25℃ to peak)
SOCAY Electronics Co., Ltd.
Revision October 18, 2013
Critical Zone
TL to TP
Ramp-down
Time
Reflow Condition
Pre Heat
-Temperature Min (Ts(min))
-Temperature Max (Ts(max))
- Time (min to max) (ts)
Pb - Free assembly
150°C
200°C
60 -180 Seconds
Average ramp up rate ( Liquidus Temp TL)
to peak
3°C/second max
TS(max) to TL - Ramp-up Rate
Reflow
- Temperature (TL) (Liquidus)
- Time (min to max) (ts)
Peak Temperature (TP)
5°C/second max
217°C
60 -150 Seconds
260 +0/-5°C
Time within 5°C
Temperature (tp)
of
actual
peak
10 - 30 Seconds
Ramp-down Rate
Time 25°C to peak Temperature (TP)
Do not exceed
6°C/second max
8 minutes Max
260°C
3/4
www.socay.com
@SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.