SM8S Series
Transient Voltage Suppressors
SM8SxxA
ROHS
DESCRIPTION:
SM8S Series TVS diodes can be used in sensitive electronics
protection against voltage transients induced by inductive load
switching and lighting, especially for automotive load dump
protection application.
FEATURES:
DO-218AB
Available in uni/bi-directional polarity.
Low forward voltage drop & Low leakage current.
High surge capability.
Junction passivation optimized design passivated anisotropic rectifier technology.
TJ = 175 ℃ capability suitable for high reliability and automotive requirement.
Meets ISO7637-2 surge specification (varied by test condition).
Meets MSL level 1, per J-STD-020, LF maximum peak of 245℃.
AEC-Q101 qualified.
Compliant to ROHS Directive 2002/95/EC and in accordance to WEEE 2002/96/EC
ABSOLUTE MAXIMUM RATINGS (TC=25ºC, RH=45%-75%, unless otherwise noted)
Parameter
Peak pulse power dissipation on 10/1000us waveform
Peak pulse power dissipation on 10/10000us waveform
Symbol
Ppp
Value
Unit
6600
Watts
5200
Watts
Peak pulse current with 10/1000us waveform
Ipp
See next table
Amps
Power dissipation on infinite heat Sink at TC=25℃
PD
8.0
Watts
Peak forward surge current, 8.3ms single half sine-wave
IFSM
700
Amps
Operating Junction and Storage Temperature Range
TJ ,TSTG
-55 to +150
℃
Typical thermal resistance, junction to case
RθJC
0.9
℃/Watt
1/5
SM8S Series
Transient Voltage Suppressors
SM8SxxA
ROHS
ELECTRICAL CHARACTERISTICS
Part
Number
VR
IR@VR
VBR @ IT
IT
Vc @Ipp
Ipp
Uni-polar
Bi-polar
V
μA@25°C
μA@175°C
min(V)
max (V)
mA
V
A
SM8S10A
——
10.0
5
250
11.1
12.3
5
17.0
388
SM8S11A
——
11.0
5
150
12.2
13.5
5
18.2
363
SM8S12A
——
12.0
5
150
13.3
14.7
5
19.9
332
SM8S13A
——
13.0
5
150
14.4
15.9
5
21.5
307
SM8S14A
——
14.0
5
150
15.6
17.2
5
23.2
284
SM8S15A
——
15.0
5
150
16.7
18.5
5
24.4
270
SM8S16A
——
16.0
5
150
17.8
19.7
5
26.0
253
SM8S17A
——
17.0
5
150
18.9
20.9
5
27.6
239
SM8S18A
——
18.0
5
150
20.0
22.1
5
29.2
226
SM8S20A
——
20.0
5
150
22.2
24.5
5
32.4
204
SM8S22A
——
22.0
5
150
24.4
26.9
5
35.5
186
SM8S24A
——
24.0
5
150
26.7
29.5
5
38.9
170
SM8S26A
——
26.0
5
150
28.9
31.9
5
42.1
157
SM8S28A
——
28.0
5
150
31.1
34.4
5
45.4
145
SM8S30A
——
30.0
5
150
33.3
36.8
5
48.4
136
SM8S32A
——
32.0
5
150
35.5
39.4
5
51.4
128.5
SM8S33A
——
33.0
5
150
36.7
40.6
5
53.3
124
SM8S36A
——
36.0
5
150
40.0
44.2
5
58.1
114
SM8S40A
——
40.0
5
150
44.4
49.1
5
64.5
102
SM8S43A
——
43.0
5
150
47.8
52.8
5
69.4
95.1
Note:
①. For all types maximum VF = 1.8 V at IF = 100 A measured on 8.3 ms single half sine-wave or
equivalent square wave, duty cycle = 4 pulses per minute maximum。
②. Surge waveform: 10/1000μs
VR :Stand-off Voltage -- Maximum voltage that can be applied VBR:
Breakdown Voltage
VC: Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ipp
IR: Reverse Leakage Current
IT:
2/5
Test current
SM8S Series
Transient Voltage Suppressors
SM8SxxA
Mechanical Data
CASE: DO-218AB Molding compound meets UL 94V-0 flammability rating Base
P/NHE3-ROHS-compliant, AEC-Q101 qualified.
Terminals: Matte tin plated leads, solder able per J-STD-002 and JESD 22-B102,
HE3 suffix meets JESD 201 class 2 whisker tests.
ORDERING INFORMATION
RATINGS AND CHARACTERISTICS CURVES (TA=25ºC, unless otherwise noted)
Fig.1 Power Derating Curve
Fig.3 Load Dump Power Characteristics
(10 ms Exponential Waveform)
3/5
Fig.2 Pulse Waveform
Fig.4 Reverse Power Capability
ROHS
SM8S Series
Transient Voltage Suppressors
SM8SxxA
Fig.5 Typical Transient Thermal Impedance
ROHS
Fig.6 Typical Junction Capacitance
MARKING
SM8S36A:Part Number
5201:“5”--2015 (year)
“2”--2
“01”--
(month)
(lot)
SOLDERING PARAMETERS
Pre
Heat
Pb-Free assembly
(see FIG.5)
-Temperature Min (Ts(min))
+150℃
-Temperature Max(Ts(max))
+200℃
-Time (Min to Max) (ts)
60-180 secs.
tp
Critical Zone
TL to TP
TL
tL
TS(max)
3℃/sec. Max
Ts(max) to TL - Ramp-up Rate
3℃/sec. Max
-Temperature(TL)(Liquid us)
+217℃
-Temperature(tL)
60-150 secs.
Peak Temp (Tp)
+260(+0/-5)℃
Time within 5℃ of actual Peak Temp (tp)
30 secs. Max
Ramp-down Rate
6℃/sec. Max
Time 25℃ to Peak Temp (TP)
8 min. Max
Do not exceed
+260℃
4/5
TP
Ramp-up
Average ramp up rate (Liquid us Temp
(TL) to peak)
Reflow
FIG.5: Reflow condition
Temperature
Reflow Condition
Ramp-down
Preheat
TS(min)
ts
25
time to peak temperatue
(t 25℃ to peak)
Time
SM8S Series
Transient Voltage Suppressors
SM8SxxA
ROHS
PACKAGE MECHANICAL DATA
Inches
Dimension
5/5
Millimeters
Min
Max
Min
Max
A
0.374
0.413
9.5
10.5
B
0.327
0.342
8.3
8.7
C
0.524
0.539
13.3
13.7
D
0.592
0.628
15.0
16.0
E
0.335
0.358
8.5
9.1
F
0.374
0.398
9.5
10.1
G
0.094
0.118
2.4
3.0
H
0.020
0.028
0.5
0.7
J
0.106
0.146
2.7
3.7
K
0.075
0.083
1.9
2.1
L
0.185
0.201
4.7
5.1
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