Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
Description
The SMAJ series is designed specifically to protect sensitive electronic
equipment from voltage transients induced by lightning and other transient
voltage events.
5.0 To 440 V
400W
Uni-directional
Bi-directional
Features
For surface mounted applications in order to optimize board space
Low leakage
Uni and Bidirectional unit
Glass passivated junction
Low inductance
Excellent clamping capability
400W Peak power capability at 10 × 1000µs waveform Repetition rate
(duty cycle):0.01%
Fast response time: typically less than 1.0ps from 0 Volts to V
BR
min
Typical I
R
less than 5μA above 12V
High Temperature soldering: 260°C/40 seconds at terminals
Typical maximum temperature coefficient ΔV
BR
= 0.1% ×
V
BR
@25°C× ΔT
Plastic package has Underwriters Laboratory Flammability 94V-0
Matte tin lead–free Plated
Halogen free and RoHS compliant
Typical failure mode is short from over-specified voltage or current
Whisker test is conducted based on JEDEC JESD201A per its table
4a and 4c
IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)
ESD protection of data lines in accordance with IEC 61000-4-2
(IEC801-2)
EFT protection of data lines in accordance with IEC 61000-4-4
(IEC801-4)
Functional Diagram
Bi-directional
Cathode
Uni-direction
Anode
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E341027
Applications
TVS devices are ideal for the protection of I/O interfaces,
V
CC
bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
Maximum Ratings
(T
A
=25℃ unless otherwise noted)
Parameter
Symbol
P
PPM
I
PP
P
M(AV)
I
FSM
V
F
T
J
, T
STG
Value
400
See Next Table
1.0
40
3.5/5.0
-55 to +150
Unit
Watts
Amps
Watt
Amps
Voltage
℃
Peak Pulse Power Dissipation with a 10/1000µs waveform (Fig.1)(Note
1), (Note 2)
Peak Pulse Current with a 10/1000µs waveform.(Note1,Fig.3)
Power Dissipation on Infinite Heat Sink at T
L
=75°C
Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward Voltage at 25A for Unidirectional Only
(Note 4)
Operating junction and Storage Temperature Range.
Notes:
1. Non-repetitive current pulse, per Fig. 3 and derated above T
A
= 25℃ per Fig. 2.
2. Mounted on 5.0mm x 5.0mm (0.03mm thick) Copper Pads to each terminal.
3. 8.3ms single half sine-wave, or equivalent square wave, Duty cycle = 4 pulses per minutes maximum.
4. V
F
< 3.5V for V
BR
< 200V and V
F
< 6.5V for V
BR
> 201V.
SOCAY Electronics Corp., Ltd.
Revision March 28, 2017
www.socay.com
1/7
@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
5.0 To 440 V
400W
Electrical Characteristics (T
A
=25℃ unless otherwise noted)
Part Number
Uni
SMAJ5.0A
SMAJ6.0A
SMAJ6.5A
SMAJ7.0A
SMAJ7.5A
SMAJ8.0A
SMAJ8.5A
SMAJ9.0A
SMAJ10A
SMAJ11A
SMAJ12A
SMAJ13A
SMAJ14A
SMAJ15A
SMAJ16A
SMAJ17A
SMAJ18A
SMAJ19A
SMAJ20A
SMAJ22A
SMAJ24A
SMAJ26A
SMAJ28A
SMAJ30A
SMAJ33A
SMAJ36A
SMAJ40A
SMAJ43A
Bi
SMAJ5.0CA
SMAJ6.0CA
SMAJ6.5CA
SMAJ7.0CA
SMAJ7.5CA
SMAJ8.0CA
SMAJ8.5CA
SMAJ9.0CA
SMAJ10CA
SMAJ11CA
SMAJ12CA
SMAJ13CA
SMAJ14CA
SMAJ15CA
SMAJ16CA
SMAJ17CA
SMAJ18CA
SMAJ19CA
SMAJ20CA
SMAJ22CA
SMAJ24CA
SMAJ26CA
SMAJ28CA
SMAJ30CA
SMAJ33CA
SMAJ36CA
SMAJ40CA
SMAJ43CA
Marking
Uni
AE
AG
AK
AM
AP
AR
AT
AV
AX
AZ
BE
BG
BK
BM
BP
BR
BT
BB
BV
BX
BZ
CE
CG
CK
CM
CP
CR
CT
Bi
WE
WG
WK
WM
WP
WR
WT
WV
WX
WZ
XE
XG
XK
XM
XP
XR
XT
XB
XV
XX
XZ
YE
YG
YK
YM
YP
YR
YT
Reverse
Stand-Off
Voltage
V
RWM
(V)
5.0
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
22.0
24.0
26.0
28.0
30.0
33.0
36.0
40.0
43.0
Breakdown
Voltage V
BR
(V)
@I
T
MIN
6.40
6.67
7.22
7.78
8.33
8.89
9.44
10.00
11.10
12.20
13.30
14.40
15.60
16.70
17.80
18.90
20.00
21.10
22.20
24.40
26.70
28.90
31.10
33.30
36.70
40.00
44.40
47.80
MAX
7.00
7.37
7.98
8.60
9.21
9.83
10.40
11.10
12.30
13.50
14.70
15.90
17.20
18.50
19.70
20.90
22.10
23.30
24.50
26.90
29.50
31.90
34.40
36.80
40.60
44.20
49.10
52.80
Test
Current
I
T
(mA)
10
10
10
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Maximum
Clamping
Voltage
V
C
@I
PP
(V)
9.2
10.3
11.2
12.0
12.9
13.6
14.4
15.4
17.0
18.2
19.9
21.5
23.2
24.4
26.0
27.6
29.2
30.8
32.4
35.5
38.9
42.1
45.4
48.4
53.3
58.1
64.5
69.4
Maximum
Peak
Pulse
Current
I
PP
(A)
43.48
38.83
35.71
33.33
31.01
29.41
27.78
25.97
23.53
21.98
20.10
18.60
17.24
16.39
15.38
14.49
13.70
13.00
12.35
11.27
10.28
9.50
8.81
8.26
7.50
6.88
6.20
5.76
Maximum
Reverse
Leakage I
R
@V
RWM
(μA)
800
800
500
200
100
50
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
SOCAY Electronics Corp., Ltd.
Revision March 28, 2017
www.socay.com
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
5.0 To 440 V
400W
Electrical Characteristics
Part Number
Uni
SMAJ45A
SMAJ48A
SMAJ51A
SMAJ54A
SMAJ58A
SMAJ60A
SMAJ64A
SMAJ70A
SMAJ75A
SMAJ78A
SMAJ80A
SMAJ85A
SMAJ90A
SMAJ100A
SMAJ110A
SMAJ120A
SMAJ130A
SMAJ140A
SMAJ150A
SMAJ160A
SMAJ170A
SMAJ180A
SMAJ190A
SMAJ200A
SMAJ220A
SMAJ250A
SMAJ300A
SMAJ350A
SMAJ400A
SMAJ440A
Note:
Bi
SMAJ45CA
SMAJ48CA
SMAJ51CA
SMAJ54CA
SMAJ58CA
SMAJ60CA
SMAJ64CA
SMAJ70CA
SMAJ75CA
SMAJ78CA
SMAJ80CA
SMAJ85CA
SMAJ90CA
SMAJ100CA
SMAJ110CA
SMAJ120CA
SMAJ130CA
SMAJ140CA
SMAJ150CA
SMAJ160CA
SMAJ170CA
SMAJ180CA
SMAJ190CA
SMAJ200CA
SMAJ220CA
SMAJ250CA
SMAJ300CA
SMAJ350CA
SMAJ400CA
SMAJ440CA
(T
A
=25℃ unless otherwise noted) (Continue)
Marking
Uni
CV
CX
CZ
RE
RG
RK
RM
RP
RR
RT
RB
RV
RX
RZ
SE
SG
SK
SB
SM
SP
SR
ST
SV
SW
SX
SZ
DE
DG
DK
DM
Bi
YV
YX
YZ
ZE
ZG
ZK
ZM
ZP
ZR
ZT
ZB
ZV
ZX
ZZ
VE
VG
VK
VB
VM
VP
VR
VT
VV
VW
VX
VZ
HE
HG
HK
HM
Reverse
Stand-Off
Voltage
V
RWM
(V)
45.0
48.0
51.0
54.0
58.0
60.0
64.0
70.0
75.0
78.0
80.0
85.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
170.0
180.0
190.0
200.0
220.0
250.0
300.0
350.0
400.0
440.0
Breakdown
Voltage V
BR
(V)
@I
T
MIN
50.00
53.30
56.70
60.00
64.40
66.70
71.10
77.80
83.30
86.70
88.80
94.40
100.00
111.00
122.00
133.00
144.00
155.00
167.00
178.00
189.00
201.00
211.00
224.00
246.00
279.00
335.00
391.00
447.00
492.00
MAX
55.30
58.90
62.70
66.30
71.20
73.70
78.60
86.00
92.10
95.80
97.60
104.00
111.00
123.00
135.00
147.00
159.00
171.00
185.00
197.00
209.00
220.00
232.00
247.00
272.00
309.00
371.00
432.00
494.00
543.00
Test
Current
I
T
(mA)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Maximum
Clamping
Voltage
V
C
@I
PP
(V)
72.7
77.4
82.4
87.1
93.6
96.8
103.0
113.0
121.0
126.0
129.6
137.0
146.0
162.0
177.0
193.0
209.0
226.8
243.0
259.0
275.0
291.6
307.8
324.0
356.0
405.0
486.0
567.0
648.0
713.0
Maximum
Peak
Pulse
Current
I
PP
(A)
5.50
5.17
4.85
4.59
4.27
4.13
3.88
3.54
3.31
3.17
3.09
2.92
2.74
2.47
2.26
2.07
1.91
1.76
1.65
1.54
1.45
1.37
1.30
1.23
1.12
0.99
0.82
0.71
0.62
0.56
Maximum
Reverse
Leakage I
R
@V
RWM
(μA)
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
1. Suffix 'A ' denotes 5% tolerance device.
2. Add suffix ' CA ' after part number to specify Bi-directional devices.
3. For Bi-Directional devices having V
R
of 10 volts and under, the I
R
limit is double.
SOCAY Electronics Corp., Ltd.
Revision March 28, 2017
www.socay.com
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
5.0 To 440 V
400W
Ratings and Characteristic Curves (T
A
=25°C unless otherwise noted)
Figure 1 - Peak Pulse Power Rating Curve
100
Figure 2 - Pulse Derating Curve
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
100
80
60
40
20
0
P
PPM
- Peak Pulse Power
(kW)
10
1
0.1
0.1
1
10
100
t
d
- Pulse Width (μs)
1000
10000
0
25
50
75
100
125
T
A
-Ambient temperature(°C)
150
175
Figure 3 - Pulse Waveform
150
Figure 4 - Typical Junction Capacitance
10000
Bi-directional
@zero bins
I
PPM
- Peak Pulse Current, % I
RSM
t
r
=10µsec
Peak Value
IPPM
100
T
J
=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
PPM
1000
Uni-directional @V
RWM
Uni-directional
@zero bins
Half Value
I
PPM
(I
PPM
/2)
50
10/1000µsec. Waveform
as defined by R.E.A
Cj (pF)
100
10
0
t
c
0
1.0
2.0
t - Time (ms)
3.0
4.0
Tj=25°C
f=1.0MHz
Vsig=50mVp-p
Bi-directional @V
RWM
1
1.0
10.0
100.0
1000.0
V
BR
-Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Derating Curve
P
M(AV)
, Steady State Power Dissipation (W)
1.0
Figure 6 - Maximum Non-Repetitive Surge Current
50
I
FSM
-Peak Forward Surge Current
(A)
40
30
20
10
0
T
J
=T
J
max.
8.3 ms Single Half Sine-Wave
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
175
200
T
L
- Lead Temperature(°C)
1
10
Number of Cycles at 60Hz
100
SOCAY Electronics Corp., Ltd.
Revision March 28, 2017
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
5.0 To 440 V
400W
I-V Curve Characteristics
Uni-directional
I
F
I
Bi-directional
I
PP
I
V
C
V
BR
V
RW
R
M
V
I
T
V
F
I
PP
C
r
i
t
i
c
a
l
Z
o
n
e
T
L
V
C
V
BR
V
RW
R
M
I
R
I
T
I
T
I
R
V
RW
V
BR
V
C
R
M
V
I
PP
Physical Specifications
Weight
Case
Polarity
Terminal
0.002 ounce, 0.061 gram
Environmental Specifications
Temperature Cycle
Pressure Cooker
High Temp. Storage
HTRB
Thermal Shock
JESD22-A104
JESD22-A102
JESD22-A103
JESD22-A108
JESD22-A106
JEDEC DO-214AC Molded Plastic over
T
glass passivated junction
Color band denotes cathode except
Bipolar
Matte Tin-plated leads, Solderable per
JESD22-B102D
P
t
o
Soldering Parameters
Reflow Condition
-Temperature Min (T
s(min)
)
Pre Heat
T
P
Ramp-up
Critical Zone
T
L
to T
P
Lead–free assembly
150°C
200°C
60 -180 Seconds
3°C/second max
3°C/second max
217°C
60 -150 Seconds
260 +0/-5°C
of
actual
peak
20 -40 Seconds
6°C/second max
8 minutes Max
280°C
-Temperature Max (T
s(max)
)
- Time (min to max) (T
s
)
T
L
T
S(max)
Average ramp up rate ( Liquidus Temp T
L
)
to peak
T
S(max)
to TL - Ramp-up Rate
Temperature
Ramp-down
T
S(min)
Preheat
Reflow
- Temperature (T
L
) (Liquidus)
- Time (min to max) (
T
L
)
Peak Temperature (T
P
)
Time
Time within 5°C
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
25
Time to peak temperature
(t 25℃ to peak)
SOCAY Electronics Corp., Ltd.
Revision March 28, 2017
www.socay.com
5/7
@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
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