SMAJ SERIES
TRANSIENT VOLTAGE SUPPRESSORS
STAND OFF VOLTAGE:
PEAK PULSE POWER:
FEATURES
· Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
· 400W peak pulse power capability on 10/1000µs
waveform, repetition rate (duty cycle): 0.01%
· Excellent clamping capability
· Low incremental surge resistance
· Fast response time: typically less than 1.0 ps from
0 volts to BV min
· Low profile package with built-in strain relief for
surface mounted applications
(25.4) 1.0
(9.5) .375
(7.2) .285
.210 (5.3)
.190 (4.8)
MIN
(25.4) 1.0
MIN
.052 (1.3)
.048 (1.2)
DO-214AC(SMA)
5.0 to 188 VOLTS
400 WATTS
MECHANICAL DATA
Case: Molded plastic, DO-214AC(SMA)
Terminals: Axial leads, solderable per MIL-STD-750,
method 2026 guaranteed
Polarity: Color band denotes cathode except bipolar
Packaging: 12mm tape per EIA STD RS-481
Weight: 0.002 ounce, 0.064 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Ratings at 25
℃
ambient temperature unless otherwise specified.
Symbols
Peak power dissipation with a 10/1000µs waveform (Note 1 , 2) (Fig. 1)
Peak pulse current with a 10/1000µs waveform (Note 1)
Peak forward surge current, 8.3ms
single half sine-wave unidirectional only (Note 2)
Maximum instantaneous forward voltage
at 25A for unidirectional only
Typical thermal resistance junction-to-lead
Thermal resistance junction to ambient air (Note 3)
Operating junction and storage temperature range
P
PPM
I
PPM
I
FSM
Limit
Units
Watts
Amp
Amp
Minimum 400
See Next Table
40
3.5
30
120
–55 to +150
V
F
R
θJL
R
θJA
T
J
，Tstg
Volts
℃/W
℃/W
℃
NOTES:
1- Non-repetitive current pulse, per Fig. 3 and derated above TA = 25°C per Fig. 2. Rating is 300W above 78V
2- Mounted on 0.2 x 0.2" (5.0 x 5.0mm) copper pads to each terminal
3- Mounted on minimum recommended pad layout
Devices for Bidirectional Applications:
1- For bi-directional, use C or CA suffix for types SMAJ5.0 thru types SMAJ188A(e.g. SMAJ5.0C, SMAJ188CA).
2- Electrical characteristics apply in both directions.
SMAJ SERIES
TRANSIENT VOLTAGE SUPPRESSORS
Maximum Ratings and Electrical Characteristics
Ratings at 25
℃
ambient temperature unless otherwise specified.
Reverse
Breakdown Voltage
Device Type
V
BR
at I
T
( Note 1 )
Volts
( min. )
Volts
( max. )
I
T
mAmps
Test Current
Stand off
Voltage
V
WM
Volts
Maximum
Reverse
Leakage at V
WM
I
D
( Note 3 )
uAmps
Maximum
Peak Pulse
Current
I
PPM
( Note 2 )
Amps
Maximum
Clamping
Voltage at I
PPM
V
C
Volts
SMAJ5.0
SMAJ5.0A
( Note 4 )
SMAJ6.0
SMAJ6.0A
SMAJ6.5
SMAJ6.5A
SMAJ7.0
SMAJ7.0A
SMAJ7.5
SMAJ7.5A
SMAJ8.0
SMAJ8.0A
SMAJ8.5
SMAJ8.5A
SMAJ9.0
SMAJ9.0A
SMAJ10
SMAJ10A
SMAJ11
SMAJ11A
SMAJ12
SMAJ12A
SMAJ13
SMAJ13A
SMAJ14
SMAJ14A
SMAJ15
SMAJ15A
SMAJ16
SMAJ16A
SMAJ17
SMAJ17A
SMAJ18
SMAJ18A
SMAJ20
SMAJ20A
SMAJ22
SMAJ22A
SMAJ24
SMAJ24A
SMAJ26
SMAJ26A
SMAJ28
SMAJ28A
SMAJ30
SMAJ30A
SMAJ33
SMAJ33A
SMAJ36
SMAJ36A
6.40
6.40
6.67
6.67
7.22
7.22
7.78
7.78
8.33
8.33
8.89
8.89
9.44
9.44
10.0
10.0
11.1
11.1
12.2
12.2
13.3
13.3
14.4
14.4
15.6
15.6
16.7
16.7
17.8
17.8
18.9
18.9
20.0
20.0
22.2
22.2
24.4
24.4
26.7
26.7
28.9
28.9
31.1
31.1
33.3
33.3
36.7
36.7
40.0
40.0
7.30
7.00
8.15
7.37
8.82
7.98
9.51
8.60
10.2
9.21
10.9
9.83
11.5
10.4
12.2
11.1
13.6
12.3
14.9
13.5
16.3
14.7
17.6
15.9
19.1
17.2
20.4
18.5
21.8
19.7
23.1
20.9
24.4
22.1
27.1
24.5
29.8
26.9
32.6
29.5
35.3
31.9
38.0
34.4
40.7
36.8
44.9
40.6
48.9
44.2
10
10
10
10
10
10
10
10
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
5.0
5.0
6.0
6.0
6.5
6.5
7.0
7.0
7.5
7.5
8.0
8.0
8.5
8.5
9.0
9.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
15.0
15.0
16.0
16.0
17.0
17.0
18.0
18.0
20.0
20.0
22.0
22.0
24.0
24.0
26.0
26.0
28.0
28.0
30.0
30.0
33.0
33.0
36.0
36.0
800
800
800
800
500
500
200
200
100
100
50
50
10
10
5.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
41.7
43.5
35.1
38.8
32.5
35.7
30.1
33.3
28.0
31.0
26.7
29.4
25.2
27.8
23.7
26.0
21.3
23.5
19.9
22.0
18.2
20.1
16.8
18.6
15.5
17.2
14.9
16.4
13.9
15.4
13.1
14.5
12.4
13.7
11.2
12.3
10.2
11.3
9.3
10.3
8.6
9.5
8.0
8.8
7.5
8.3
6.8
7.5
6.2
6.9
9.6
9.2
11.4
10.3
12.3
11.2
13.3
12.0
14.3
12.9
15.0
13.6
15.9
14.4
16.9
15.4
18.8
17.0
20.1
18.2
22.0
19.9
23.8
21.5
25.8
23.2
26.9
24.4
28.8
26.0
30.5
27.6
32.2
29.2
35.8
32.4
39.4
35.5
43.0
38.9
46.6
42.1
50.1
45.4
53.5
48.4
59.0
53.3
64.3
58.1
SMAJ SERIES
TRANSIENT VOLTAGE SUPPRESSORS
Maximum Ratings and Electrical Characteristics
Ratings at 25
℃
ambient temperature unless otherwise specified.
Reverse
Breakdown Voltage
Device Type
V
BR
at I
T
( Note 1 )
Volts
( min. )
Volts
( max. )
I
T
mAmps
Test Current
Stand off
Voltage
V
WM
Volts
Maximum
Reverse
Leakage at V
WM
I
D
( Note 3 )
uAmps
Maximum
Peak Pulse
Current
I
PPM
( Note 2 )
Amps
Maximum
Clamping
Voltage at I
PPM
V
C
Volts
SMAJ40
SMAJ40A
SMAJ43
SMAJ43A
SMAJ45
SMAJ45A
SMAJ48
SMAJ48A
SMAJ51
SMAJ51A
SMAJ54
SMAJ54A
SMAJ58
SMAJ58A
SMAJ60
SMAJ60A
SMAJ64
SMAJ64A
SMAJ70
SMAJ70A
SMAJ75
SMAJ75A
SMAJ78
SMAJ78A
SMAJ85
SMAJ85A
SMAJ90
SMAJ90A
SMAJ100
SMAJ100A
SMAJ110
SMAJ110A
SMAJ120
SMAJ120A
SMAJ130
SMAJ130A
SMAJ150
SMAJ150A
SMAJ160
SMAJ160A
SMAJ170
SMAJ170A
SMAJ188
SMAJ188A
NOTES:
44.4
44.4
47.8
47.8
50.0
50.0
53.3
53.3
56.7
56.7
60.0
60.0
64.4
64.4
66.7
66.7
71.1
71.1
77.8
77.8
83.3
83.3
86.7
86.7
94.4
94.4
100
100
111
111
122
122
133
133
144
144
167
167
178
178
189
189
209
209
54.3
49.1
58.4
52.8
61.1
55.3
65.2
58.9
69.3
62.7
73.3
66.3
78.7
71.2
81.5
73.7
86.9
78.6
95.1
86.0
102
92.1
106
95.8
115
104
122
111
136
123
149
135
163
147
176
159
204
185
218
197
231
209
255
231
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
40
40
43
43
45
45
48
48
51
51
54
54
58
58
60
60
64
64
70
70
75
75
78
78
85
85
90
90
100
100
110
110
120
120
130
130
150
150
160
160
170
170
188
188
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
5.6
6.2
5.2
5.8
5.0
5.5
4.7
5.2
4.4
4.9
4.2
4.6
3.9
4.3
3.7
4.1
3.5
3.9
3.2
3.5
3.0
3.3
2.9
3.2
2.0
2.2
1.9
2.1
1.7
1.9
1.5
1.7
1.4
1.6
1.3
1.4
1.1
1.2
1.0
1.2
0.99
1.09
0.90
0.91
71.4
64.5
76.7
69.4
80.3
72.7
85.5
77.4
91.1
82.4
96.3
87.1
103
93.6
107
96.8
114
103
125
113
134
121
139
126
151
137
160
146
179
162
196
177
214
193
230
209
268
243
287
259
304
275
344
328
1- Pulse test: tp
≤
50ms
2- Surge current waveform per Fig. 3 and derated per Fig. 2
3- For bidirectional types having V
WM
of 10 volts and less, the I
D
limit is doubled
4- For the bidirectional SMAJ5.0CA, the maximum V
BR
is 7.25V
5- All terms and symbols are consistent with ANSI/IEEE C62.35
SMAJ SERIES
TRANSIENT VOLTAGE SUPPRESSORS
RATINGS AND CHARACTERISTIC CURVES
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