SMCJS Datasheet, PDF (3/4 Pages) UN Semiconducctor INC – Surface Mount Transient Voltage Suppressors

Surface Mount Transient Voltage Suppressors
SYSTEM
12V
24V
TEST
LEVEL
Ⅳ
Ⅳ
试验脉冲 5a
Us(V)
87
174
Td（ms） Ri（Ω ）
150
2
100
6
NUMBER OF
PULSE
10 pulse
10 pulse
Soldering Parameters
TP
TL
TS(max)
Ramp-up
TS(min)
25
Preheat
Time to peak temperature
(t 25℃ to peak)
Critical Zone
TL to TP
Ramp-down
Time
Reflow Condition
Lead–free assembly
-Temperature Min (Ts(min))
150°C
Pre Heat -Temperature Max (T_s(max))
200°C
- Time (min to max) (ts)
60 -180 Seconds
Average ramp up rate ( Liquidus Temp TL)
to peak
3°C/second max
TS(max) to TL - Ramp-up Rate
3°C/second max
Reflow
- Temperature (TL) (Liquidus) 217°C
- Time (min to max) (ts)
60 -150 Seconds
Peak Temperature (TP)
260 +0/-5°C
Time within 5°C
Temperature (tp)
of
actual
peak
30 Seconds Max
Ramp-down Rate
6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max
Do not exceed
260°C
Revision February 2, 2015
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.