Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Description
The SM8Z series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by lightning
and other transient voltage events.
Working Voltage: 14 to 43 V
Peak Pulse Power: 6600 W
Features
Glass passivated chip
6600 W peak pulse power capability with a
10/1000 us waveform, repetitive rate (duty
cycle):0.01 %
T J = 175 ° capability suitable for high reliability
C
and automotive requirement
Meets ISO7637-2 surge specification (varied by test
condition)Meet AEC-Q101 requirement
Low leakage
Uni-directional polarity
Excellent clamping capability
Very fast response time
RoHS compliant
Mechanical Data
Case: DO-218AB
Epoxy: UL 94V-0 rate flame retardant
Polarity: Heatsink is anode
Primary Characteristics
V
RWM
P
PPM
(10/1000µs)
P
PPM
(10/10000µs)
P
D
I
FSM
T
J max.
Package
14V to 43V
6600W
5200W
8W
700A
175°
C
DO-218AB
Applications
Use in sensitive electronics protection against voltage transients
induced by inductive load switching and lighting, especially for
automotive load dump protection application
Maximum Ratings and Thermal Characteristics (T A =25
℃
unless otherwise noted)
Parameter
with 10/1000µs waveform
Peak Pulse Power Dissipation
with 10/10000µs waveform
P
PPM
P
D
I
PP
I
FSM
T
J
, T
STG
R
θJC
Symbol
Value
6600
5200
8
See Next Table
700
–55
to +175
0.90
W
W
A
A
°C
°C
/Watt
Units
Power Dissipation on Infinite Heat Sink at T
L
=25° (Fig.1)
C
Peak Pulse Current with a 10/1000µs waveform
Peak forward surge current 8.3 ms single half sine Wave
Operating junction and storage temperature range
Typical thermal resistance, junction to case
Note:(1)Non-repetitive
current pulse per Fig.2 and derated above T A = 25 ° per Fig.1
C
UN Semiconductor Co., Ltd.
Revision February 2, 2015
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@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Electrical Characteristics
(@ 25℃ Unless Otherwise Specified )
Stand-Off
Voltage
V
MW
(V)
Breakdown
Voltage
V
BR
(V)
MIN.
MAX.
Test
Current
I
T
(mA)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Maximum
Reverse
Leakage I
R
@V
RWM
(uA)
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Maximum
I
R
@V
RWM
T
J
=175
(uA)
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
Maximum
Reverse
Surge
Current I
PP
(A)
(1)
284.0
270.0
254.0
239.0
226.0
204.0
186.0
170.0
157.0
145.0
136.0
124.0
114.0
102.0
95.1
Maximum
Clamping
Voltage
V
C
@I
PP
(V)
23.2
24.4
26.0
27.6
29.2
32.4
35.5
38.9
42.1
45.4
48.4
53.3
58.1
64.5
69.4
Part Number
15.60
14
17.20
SM8Z15A
17.20 5
SM8Z15A
15
16.70
18.50
16.70
10 150
SM8Z16A
16
17.80
19.70
18.50 5 10
14
SM8Z17A
17
18.90
20.90
150 15
284.0
SM8Z18A
18
20.00
22.10
270.0 24.4
23.2
SM8Z20A
20
22.20
24.50
SM8Z16A
SM8Z1
SM8Z22A
22
24.40
26.90
17.80
5A
SM8Z24A
24
26.70
29.50
19.70 5 10
16.70
SM8Z26A
26
28.90
31.90
150 16
18.50 5
28
31.10
34.40
SM8Z28A
254.0 26.0
10 150
30
33.30
36.80
SM8Z30A
SM8Z17A
15
33
36.70
40.60
SM8Z33A
18.90
270.0
36
40.00
44.20
SM8Z36A
20.90 5 10
24.4
SM8Z40A
40
44.40
49.10
150 17
SM8Z1
SM8Z43A
43
47.80
52.80
239.0 27.6
6A
NOTE:
Surge current waveform is defined at 10/1000uS waveform
SM8Z18A
17.80
20.00
19.70 5
Ratings and Characteristics
150
22.10 5 10
10
Curves (T
A
=25℃
150 18
16
226.0 29.2
Figure 1 – Power Derating
254.0
Curve
SM8Z20A
26.0
22.20
SM8Z1
24.50 5 10
7A
150 20
18.90
204.0 32.4
20.90 5
SM8Z22A
10 150
24.40
17
26.90 5 10
239.0
150 22
27.6
186.0 35.5
SM8Z1
SM8Z24A
8A
26.70
20.00
29.50 5 10
22.10 5
150 24
10 150
170.0 38.9
18
SM8Z26A
226.0
28.90
29.2
31.90 5 10
SM8Z2
150 26
0A
157.0 42.1
22.20
SM8Z28A
24.50 5
31.10
10 150
34.40 5 10
20
150 28
204.0
145.0 45.4
32.4
SM8Z30A
SM8Z2
33.30
UN Semiconductor Co., Ltd.
2A
36.80 5 10
24.40
150 30
26.90 5
Revision February 2, 2015
136.0 48.4
10 150
SM8Z33A
22
36.70
186.0
40.60 5 10
35.5
SM8Z14A
unless otherwise noted)
Figure 2 - Load Dump Power Characteristics
(10 ms Exponential Waveform)
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@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Figure 3 - Pulse Waveform
Figure 4 – Reverse Power Capability
Package Outline Dimensions Unit: inches (millimeters)
Recommended Mounting Pad Layout
3.3
3.0
11.0
3.5
9.5
15.8
UN Semiconductor Co., Ltd.
Revision February 2, 2015
www.unsemi.com.tw
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
SURFACE MOUNT TAPE AND REEL PACKAGING
G
ZONE 1
N A
ZONE1
B
C
D
T
DIMENSIONS in millimeters (inches)
TAPE SIZE
A MAX.
330 ± 2.0 (13.0 ±
0.079)
178 ± 2.0 (7.0 ±
0.079)
B MIN.
C
D MIN.
20.2
(0.795)
N MIN.
G MAX.
T MAX.
30.4
(1.197)
13.0 ± 0.20
1.5 (0.059)
(0.51 ±
0.0008)
24 mm (0.945)
50 (1.97)
26.4 (1.039)
Recommended Soldering Parameters
IR-Reflow Condition
Temp. min
Pre Heat
Temp. max
)
150
200
sec
/sec
<3
>220
255-260
60-150
<3
)
sec
sec
/sec
sec
t
p
Ramp-up
T
L
T
s(max)
T
s(min)
Time(min to max)
60-180
Temperature(T)
Ramp up rate (150-200
T
P
Liquidus Temp.
Reflow
Peak Temp.
Time(Liq. to Peak)
t
L
Ramp up rate (220-200
Time within actual peak temp.
10-30
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t
s
Perheat
4/4
Ramp down Rate
Time(25
to Peak temp.)
Do not exceed
<5
<6
280
@ UN Semiconductor Co., Ltd. 2013
Temp from 25
°C to Peak
Specifications are subject to change without notice.
/sec
Please refer to www.unsemi.com.tw for current information.
Time(t)
UN Semiconductor Co., Ltd.
Revision February 2, 2015
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