SM4Z24A [UNSEMI]
Surface Mount Transient Voltage Suppressors;
| 型号： | SM4Z24A |
| 厂家： | 
UN Semiconducctor INC |
| 描述： | Surface Mount Transient Voltage Suppressors |
| 文件： | 总4页 (文件大小：1053K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Surface Mount Transient Voltage Suppressors
The SM4Z series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by lightning
and other transient voltage events.
Working Voltage: 15 to 43 V
They provide a clamping voltage lower than the avalanche
voltage. Therefore, any voltage rise due to increased current
conduction is contained to a minimum, providing
the best
possible protection level. They can also be connected in series
and/or parallel to create very high capacity protection solutions.
Peak power dissipation 4400W @10 x 1000 us Pulse.
Glass passivated chip junction .
Low leakage
Excellent clamping capability
Available in uni-directional polarity only
TJ = 175 ° C capability suitable for high reliability and
automotive requirement
Meet with ISO 7637-2,ISO 16750,etc
Halogen free and RoHS compliant
CASE: SOD-BLOCK Molded Plastic over glass
passivated junction
Use in sensitive electronics protection against voltage transients
induced by inductive load switching and lighting, especially for
automotive load dump protection application
Polarity: Heatsink is Anode
Terminal: Solder plated
Parameter
Symbol
PPPM
Value
Units
Peak power dissipation with a 10/1000us waveform
4400
W
Power Dissipation on Infinite Heat Sink at TL=75°C
Peak pulse current with a 10/1000us waveform
PD
I PP
6.0
W
A
See Next Table
T J , T STG
Operating junction and storage temperature range
–55 to +150
°C
IFSM
Peak forward surge current, 8.3ms single half sine-wave
500
A
@ UN Semiconductor Co., Ltd. 2018
Specifications are subject to change without notice.
Revision April 24, 2018
1 / 4
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
Breakdown
Voltage
Maximum
Reverse
Leakage I R
@V RWM
Maximum
Reverse
Surge
Current I PP
(A)
Test
Current
IT
Maximum
Clamping
Voltage
Part Number
Uni
Stand-Off
Voltage VRMW
(V)
VBR
(1)
(mA)
V C @I PP (V)
min(V)
max(V)
(uA)
SM4Z15A
SM4Z16A
15.0
16.0
16.70
17.80
18.50
20.5
5.0
5.0
10
10
188
176
24.4
26.0
SM4Z18A
SM4Z20A
18.0
20.0
22.0
24.0
26.0
28.0
30.0
33.0
36.0
40.0
43.0
20.00
22.20
24.40
26.70
28.90
31.10
33.30
36.70
40.00
44.40
47.80
22.10
24.50
26.90
29.50
31.90
34.40
36.80
40.60
44.20
49.10
52.80
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
10
10
10
10
10
10
10
10
10
10
10
157
141
129
118
109
100
95
29.2
32.4
35.5
38.9
42.1
45.4
48.4
53.3
58.1
64.5
69.4
SM4Z22A
SM4Z24A
SM4Z26A
SM4Z28A
SM4Z30A
SM4Z33A
86
SM4Z36A
79
SM4Z40A
71
SM4Z43A
66
Note:(1)Surge waveform: 10/1000μs
PPPM Peak Pulse Power Dissipation - Max power dissipation
VRWM Reverse Stand-off Voltage - Maximum voltage that can
be applied to TVS without operation
VBR Breakdown Voltage – Maximum voltage that flows
though the TVS at a specified current (IT)
VC Clamping Voltage – Peak voltage measured across the
TVS at a specified IPPM (peak impulse current)
IR Reverse Leakage Current – Current measured at VR
VF Forward Voltage Drop for Uni-directional
@ UN Semiconductor Co., Ltd. 2018
Specifications are subject to change without notice.
Revision April 24, 2018
2 / 4
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
TEST
NUMBER OF
PULSE
SYSTEM
Us(V)
Td（ms） Ri（Ω ）
LEVEL
Ⅳ
12V
24V
87
174
400
2
10 pulse
10 pulse
Ⅳ
200
4
Soldering Parameters
Reflow Condition
Lead–free assembly
TP
Critical Zone
TL to TP
-Temperature Min (Ts(min)
)
-Temperature Max (Ts(max)
- Time (min to max) (ts)
150°C
Ramp-up
TL
Pre Heat
)
200°C
TS(max)
60 -180 Seconds
Ramp-down
Average ramp up rate ( Liquidus Temp TL)
to peak
3°C/second max
TS(min)
TS(max) to TL - Ramp-up Rate
3°C/second max
217°C
Preheat
- Temperature (TL) (Liquidus)
Reflow
25
Time to peak temperature
- Time (min to max) (ts)
Time
60 -150 Seconds
260 +0/-5°C
(t 25℃ to peak)
Peak Temperature (TP)
Time within 5°C of actual peak
Temperature (tp)
20 -40 Seconds
Ramp-down Rate
6°C/second max
8 minutes Max
280°C
Time 25°C to peak Temperature (TP)
Do not exceed
@ UN Semiconductor Co., Ltd. 2018
Specifications are subject to change without notice.
Revision April 24, 2018
3 / 4
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
@ UN Semiconductor Co., Ltd. 2018
Specifications are subject to change without notice.
Revision April 24, 2018
4 / 4
Please refer to www.unsemi.com.tw for current information.
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