SMAJ Series
Surface Mount-400W Transient Voltage Suppression Diodes
Description
The SMAJ Series are designed specifically to protect sensitive electronic
equipment from voltage transients induced by lightning and other transient
voltage events.
SMAJ Series
SMA/DO-214AC
Unidirectional
Bidirectional
Feature
For surface mounted application to optimize board space
Low profile package
Built-in strain relief
Typical maximum temperature coefficient
Glass passivated junction
400W peak pulse power capability at 10×1000
μs
waveform,
repetition rate(duty cycles):0.01%
Low incremental surge resistance
Excellent clamping capability
Fast response time: typical less than 1.0 ps from 0V to 18V min
High temperature soldering guaranteed:260℃/40 seconds at terminals
V
BR
=0.1%×V
BR
@25℃× T
Applications
TVS device are ideal for the protection of I/O interfaces, V
CC
bus and other vulnerable circuits used in telecom, computer
industrial and consumer electronic application
Maximum Ratings and Thermal Characteristics(T
A
=25℃ unless otherwise noted)
Rating
Peak Pulse Power (t
p
=10/1000us)
Peak Forward Surge Current,8.3ms Single Half
Sine Wave Superimposed on Rated Load
(JEDEC Method)
Instantaneous Forward Voltage @I
PP
=35A
V
BR
<100V
V
BR
≥100V
Operating and Storage Temperature
Rev.06
1
Symbol
P
pp
Value
400
Units
W
I
FSM
40
A
V
F
3.5
5.0
V
T
J
,T
STG
-55 to +150
℃
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SMAJ Series
Surface Mount-400W Transient Voltage Suppression Diodes
Electrical characteristics per line@25℃( unless otherwise specified)
Reverse
Part
Number
(Uni)
Part
Number
(Bi)
Stand off
Voltage
V
R
(V)
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
SMAJ20A
SMAJ22A
SMAJ24A
SMAJ26A
SMAJ28A
SMAJ30A
SMAJ33A
SMAJ36A
SMAJ40A
SMAJ43A
SMAJ45A
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
SMAJ20CA
SMAJ22CA
SMAJ24CA
SMAJ26CA
SMAJ28CA
SMAJ30CA
SMAJ33CA
SMAJ36CA
SMAJ40CA
SMAJ43CA
SMAJ45CA
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
20.0
22.0
24.0
26.0
28.0
30.0
33.0
36.0
40.0
43.0
45.0
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
22.20
24.40
26.70
28.90
31.10
33.30
36.70
40.00
44.40
47.80
50.00
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
24.50
26.90
29.50
31.90
34.40
36.80
40.60
44.20
49.10
52.80
55.30
Breakdown Voltage
V
BR
@ I
T
(V)
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
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
32.4
35.5
38.9
42.1
45.4
48.4
53.3
48.1
64.5
69.40
72.7
Maximum
Peak
Pulse
Current
I
PP
43.5
38.8
35.7
33.3
31.0
29.4
27.8
26.0
23.5
22.0
20.1
18.6
17.2
16.4
15.4
14.5
13.7
12.3
11.3
10.3
9.5
8.8
8.3
7.5
6.9
6.2
5.8
5.5
Maximum
Reverse
Leakage
I
R
@ V
R
(μA)
800
800
500
200
100
50
20
10
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SMAJ Series
Rev.06
2
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SMAJ Series
Surface Mount-400W Transient Voltage Suppression Diodes
Reverse
Part
Number
(Uni)
Part
Number
(Bi)
Stand off
Voltage
V
R
(V)
SMAJ48A
SMAJ51A
SMAJ54A
SMAJ58A
SMAJ60A
SMAJ64A
SMAJ70A
SMAJ75A
SMAJ78A
SMAJ85A
SMAJ90A
SMAJ100A
SMAJ110A
SMAJ120A
SMAJ130A
SMAJ150A
SMAJ160A
SMAJ170A
SMAJ180A
SMAJ200A
SMAJ220A
SMAJ250A
SMAJ300A
SMAJ350A
SMAJ400A
SMAJ440A
SMAJ48CA
SMAJ51CA
SMAJ54CA
SMAJ58CA
SMAJ60CA
SMAJ64CA
SMAJ70CA
SMAJ75CA
SMAJ78CA
SMAJ85CA
SMAJ90CA
SMAJ100CA
SMAJ110CA
SMAJ120CA
SMAJ130CA
SMAJ150CA
SMAJ160CA
SMAJ170CA
SMAJ180CA
SMAJ200CA
SMAJ220A
SMAJ250CA
SMAJ300CA
SMAJ350CA
SMAJ400CA
SMAJ440CA
48.0
51.0
54.0
58.0
60.0
64.0
70.0
75.0
78.0
85.0
90.0
100.0
110.0
120.0
130.0
150.0
160.0
170.0
180.0
200.0
220.0
250.0
300.0
350.0
400.0
440.0
MIN
53.30
56.70
60.00
64.40
66.70
71.10
77.80
83.30
86.70
94.40
100.00
111.00
122.00
133.00
144.00
167.00
178.00
189.00
201.00
224.00
246.00
279.00
335.00
391.00
447.00
492.00
MAX
58.90
62.70
66.30
71.20
73.70
78.60
86.00
92.10
95.80
104.00
111.00
123.00
135.00
147.00
159.00
185.00
197.00
209.00
222.00
247.00
272.00
309.00
371.00
432.00
494.00
543.00
Breakdown Voltage
V
BR
@ I
T
(V)
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
Maximum
Clamping
Voltage
V
C
@I
PP
77.4
82.4
87.1
93.6
96.8
103.0
113.0
121.0
126.0
137.0
146.0
162.0
177.0
193.0
209.0
243.0
259.0
275.0
292.0
324.0
356.0
405.0
486.0
567.0
648.0
713.0
SMAJ Series
Maximum
Peak
Pulse
Current
I
PP
5.2
4.9
4.6
4.3
4.1
3.9
3.5
3.3
3.2
2.9
2.7
2.5
2.3
2.1
1.9
1.6
1.5
1.5
1.4
1.2
1.1
1.0
0.8
0.7
0.6
0.6
Maximum
Reverse
Leakage
I
R
@ V
R
(μA)
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
For bidirectional type having V
RWM
of 10 volts and less, the I
R
limit is double.
For parts without A (V
BR
is ±10% and V
C
is 5% higher than with A parts)
Rev.06
3
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SMAJ Series
Surface Mount-400W Transient Voltage Suppression Diodes
I-V Curve Characteristics
SMAJ Series
P
PP
Peak Pulse Power
-- Max power dissipation
V
R
Stand-off Voltage
-- Maximum voltage that can be applied to the TVS without operation
V
BR
Breakdown Voltage
-- Maximum current that flows though the TVS at a specified test current (IT)
V
C
Clamping Voltage
-- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
I
R
Reverse Leakage Current
-- Current measured at V
R
V
F
Forward Voltage Drop for Uni-directional
Solder Reflow Recommendation
Peak Temp=257℃, Ramp Rate=0.802deg.
℃/sec
280
240
200
160
120
80
40
0
0
30
60
90
120
150
180
210
240
270
300
330
360
390
420
450
480
Time (sec)
Rev.06
4
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SMAJ Series
Surface Mount-400W Transient Voltage Suppression Diodes
Ratings and Characteristic Curves T
A
=25℃ unless otherwise noted
100
Peak Pulse Power(P
PP
) or Current(I
PP
)
100
SMAJ Series
80
P
PPM
-Peak Power(kW)
60
10
40
20
10.000001
150
0.00001
0.0001
t
d
-Pulse Width (sec.)
Figure 1-Peak Pulse Power Rating
T
J
=25℃
0.001
0
0
50
100
150
T
A
-Ambient Temperature (
℃
)
Figure 2-Pulse Derating Curve
100000
Bi-directional V=0V
10000
Uni-directional V=0V
Cj (pF)
1000
Uni-directional @V
R
t
r
=10μsec
I
PPM
-Peak Pulse Current,%I
RSM
100
Peak Value
I
PPM
Pulse Width(td) is defined
as the point where the peak
Current decays to 50% of I
PPM
Half Value
I
PPM
I
PPM
( 2 )
50
10/1000μsec.Waveform
as defined by R.E.A
0
0
t
d
2.0
3.0
t-Time (ms)
Figure 3-Pulse Waveform
1.0
4.0
100
T
J
=25C
f=1.0MHz
V sig=50mV p-p
10.0
100.0
V
BR
-Reverse Breakdown Voltage(V)
Figure 4-Typical Junction Capacitance
1000.0
10
1
1.0
200
Bi-directional @V
R
P
M(AV)
,Steady Sate Power Dissipation(W)
6
I
FSM
-Peak Forward Surge Current (A)
5
4
3
2
1
0
0
160
120
80
40
100
50
T
A
-Ambient Temperature (
℃
)
150
0
1
10
Number of Cydes at 60 Hz
100
Figure 5-Steady State Power Dissipation Derating Curve
Rev.06
5
Figure 6-Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
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