SMAJ SERIES
400 Watts Suface Mount Transient Voltage Suppressor
SMA/DO-214AC
Features
UL Recognized File # E-326243
For surface mounted application
Low profile package
Built-in strain relief
Glass passivated junction
Excellent clamping capability
Fast response time: Typically less than 1.0ps from
0 volt to BV min
Typical IR less than 1uA above 10V
High temperature soldering guaranteed:
260℃ / 10 seconds at terminals
Plastic material used carried Underwriters
Laboratory Flammability Classification 94V-0
400 watts peak pulse power capability with a 10 /
1000 us waveform (300W above 78V)
Mechanical Data
Case: Molded plastic
Terminals: Pure tin plated, lead free
Polarity: Indicated by cathode band
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25 ℃ ambient temperature unless otherwise specified.
Type Number
Symbol
Value
Unit
Peak Power Dissipation at TA=25℃, Tp=1ms(Note 1)
PPK
Minimum 400
Watts
Steady State Power Dissipation
PD
1
Watts
Peak Forward Surge Current, 8.3ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2, 3)
IFSM
40
Amps
VF
3.5
Volts
TJ, TSTG
-55 to +150
℃
Maximum Instantaneous Forward Voltage at 25.0A for
Unidirectional Only
Operating and Storage Temperature Range
Note 1: Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25℃ Per Fig. 2
Note 2: Mounted on 5 x 5mm (.013mm Think) Copper Pads to Each Terminal
Note 3: 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minute Maximum
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1
SMAJ SERIES
RATINGS AND CHARACTERISTIC CURVES (SMAJ SERIES)
FIG. 1 PEAK PULSE POWER RATING CURVE
FIG.2 PULSE DERATING CURVE
PEAK PULSE POWER(PPP) OR CURRENT (IPP) A
DERATING IN PERCENTAGE (%)
PPPM, PEAK PULSE POWER, KW
100
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG.3
TA = 25℃
10
1
125
100
75
50
25
0
0.1
0.1
1
10
100
tp, PULSE WIDTH, (uS)
1000
0
10000
120
Peak Value
IPPM
100
Half Value-IPPM/2
10/1000sec, WAVEFORM
as DEFINED by R.E.A.
80
75
100
125
150
175
200
FIG. 4 MAXIMUM NON-REPETITIVE FORWARD SURGE
CURRENT UNIDIRECTIONAL ONLY
50
IFSM, PEAK FORWARD SURGE A
CURRENT (A)
PEAK PULSE CURRENT (%)
PULSE WIDTH(td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS to 50% OF IPPM
tr=10usec
50
TA, AMBIENT TEMPERATURE (oC)
FIG. 3 CLAMPING POWER PULSE WAVEFORM
140
25
60
40
20
8.3mS Single Half Sine Wave
JEDEC Method
40
30
20
10
td
0
0
0.5
1
1.5
2
2.5
3
3.5
0
4
1
t, TIME ms
FIG. 5 TYPICAL JUNCTION CAPACITANCE
CJ, JUNCTION CAPACITANCE (pF) A
10000
MEASURED AT
ZERO BIAS
1000
100
TA=25℃
f=1.0MHz
Vsig=50mVp-p
MEASURED at
STAND-OFF
VOLTAGE,Vwm
10
1
10
V(BR), BREAKDOWN VOLTAGE (V)
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100
2
10
NUMBER OF CYCLES AT 60 Hz
100
SMAJ SERIES
ELECTRICAL CHARACTERISTICS (TA=25℃ unless otherwise noted)
Device
Device
Marking
Code
Working
Peak
Reverse
Voltage
VWM
Min
Max
(mA)
Maximum
Clamping
Voltage at IPPM
Vc(V)
(Note5)
9.6
Breakdown Voltage
Test
VBR (V)
Current
at IT
IT
Maximum
Maximum
Peak Pulse
Reverse Leakage
Surge Current
@ VWM
IPPM
ID (uA)
(A)(Note5)
41.7
800
SMAJ5.0
AD
5
6.4
7.3
10
SMAJ5.0A
AE
5
6.4
7
10
9.2
43.5
800
SMAJ6.0
AF
6
6.67
8.15
10
11.4
35.1
800
SMAJ6.0A
AG
6
6.67
7.37
10
10.3
38.8
800
SMAJ6.5
AH
6.5
7.22
8.82
10
12.3
32.5
500
SMAJ6.5A
AK
6.5
7.22
7.98
10
11.2
35.7
500
SMAJ7.0
AL
7
7.78
9.51
10
13.3
30.1
200
SMAJ7.0A
AM
7
7.78
8.6
10
12.0
33.3
200
SMAJ7.5
AN
7.5
8.33
10.30
1.0
14.3
28.0
100
SMAJ7.5A
AP
7.5
8.33
9.21
1.0
12.9
31.0
100
SMAJ8.0
AQ
8
8.89
10.9
1.0
15.0
26.7
50.0
SMAJ8.0A
AR
8
8.89
9.83
1.0
13.6
29.4
50.0
SMAJ8.5
AS
8.5
9.44
11.5
1.0
15.9
25.2
10.0
SMAJ8.5A
AT
8.5
9.44
10.4
1.0
14.4
27.8
10.0
SMAJ9.0
AU
9
10
12.2
1.0
16.9
23.7
5.0
SMAJ9.0A
AV
9
10
11.1
1.0
15.4
26.0
5.0
SMAJ10
AW
10
11.1
13.6
1.0
18.8
21.3
5.0
SMAJ10A
AX
10
11.1
12.3
1.0
17.0
23.5
5.0
SMAJ11
AY
11
12.2
14.9
1.0
20.1
19.9
5.0
SMAJ11A
AZ
11
12.2
13.5
1.0
18.2
22.0
5.0
SMAJ12
BD
12
13.3
16.3
1.0
22.0
18.2
5.0
SMAJ12A
BE
12
13.3
14.7
1.0
19.9
20.1
5.0
SMAJ13
BF
13
14.4
17.6
1.0
23.8
16.8
5.0
SMAJ13A
BG
13
14.4
15.9
1.0
21.5
18.6
5.0
SMAJ14
BH
14
15.6
19.1
1.0
25.8
15.5
5.0
SMAJ14A
BK
14
15.6
17.2
1.0
23.2
17.2
5.0
SMAJ15
BL
15
16.7
20.4
1.0
26.9
14.9
5.0
SMAJ15A
BM
15
16.7
18.5
1.0
24.4
16.4
5.0
SMAJ16
BN
16
17.8
21.8
1.0
28.8
13.9
5.0
SMAJ16A
BP
16
17.8
19.7
1.0
26.0
15.4
5.0
SMAJ17
BQ
17
18.9
23.1
1.0
30.5
13.1
5.0
SMAJ17A
BR
17
18.9
20.9
1.0
27.6
14.5
5.0
SMAJ18
BS
18
20
24.4
1.0
32.2
12.4
5.0
SMAJ18A
BT
18
20
22.1
1.0
29.2
13.7
5.0
SMAJ20
BU
20
22.2
27.1
1.0
35.8
11.2
5.0
SMAJ20A
BV
20
22.2
24.5
1.0
32.4
12.3
5.0
SMAJ22
BW
22
24.4
29.8
1.0
39.4
10.2
5.0
SMAJ22A
BX
22
24.4
26.9
1.0
35.5
11.3
5.0
SMAJ24
BY
24
26.7
32.6
1.0
43.0
9.3
5.0
SMAJ24A
BZ
24
26.7
29.5
1.0
38.9
10.3
5.0
SMAJ26
CD
26
28.9
35.3
1.0
46.6
8.6
5.0
SMAJ26A
CE
26
28.9
31.9
1.0
42.1
9.5
5.0
SMAJ28
CF
28
31.1
38
1.0
50.0
8.0
5.0
SMAJ28A
CG
28
31.1
34.4
1.0
45.4
8.8
5.0
SMAJ30
CH
30
33.3
40.7
1.0
53.5
7.5
5.0
SMAJ30A
CK
30
33.3
36.8
1.0
48.4
8.3
5.0
SMAJ33
CL
33
36.7
44.9
1.0
59.0
6.8
5.0
SMAJ33A
CM
33
36.7
40.6
1.0
53.3
7.5
5.0
SMAJ36
CN
36
40
48.9
1.0
64.3
6.2
5.0
SMAJ36A
CP
36
40
44.2
1.0
58.1
6.9
5.0
SMAJ40
CQ
40
44.4
54.3
1.0
71.4
5.6
5.0
SMAJ40A
CR
40
44.4
49.1
1.0
64.5
6.2
5.0
SMAJ43
CS
43
47.8
58.4
1.0
76.7
5.2
5.0
SMAJ43A
CT
43
47.8
52.8
1.0
69.4
5.8
5.0
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SMAJ SERIES
ELECTRICAL CHARACTERISTICS (TA=25℃ unless otherwise noted)
Working
Peak
Reverse
Voltage
VWM
Maximum
Maximum
Peak Pulse
Reverse Leakage
Surge Current
@ VWM
IPPM
ID (uA)
(A)(Note5)
5.0
5.0
SMAJ45
CU
45
50
61.1
1.0
Maximum
Clamping
Voltage at IPPM
Vc(V)
(Note5)
80.3
SMAJ45A
CV
45
50
55.3
1.0
72.7
5.5
SMAJ48
CW
48
53.3
65.1
1.0
85.5
4.7
5.0
SMAJ48A
CX
48
53.3
58.9
1.0
77.4
5.2
5.0
SMAJ51
CY
51
56.7
69.3
1.0
91.1
4.4
5.0
SMAJ51A
CZ
51
56.7
62.7
1.0
82.4
4.9
5.0
SMAJ54
RD
54
60
73.3
1.0
96.3
4.2
5.0
SMAJ54A
RE
54
60
66.3
1.0
87.1
4.6
5.0
SMAJ58
RF
58
64.4
78.7
1.0
103
3.9
5.0
SMAJ58A
RG
58
64.4
71.2
1.0
93.6
4.3
5.0
SMAJ60
RH
60
66.7
81.5
1.0
107
3.7
5.0
SMAJ60A
RK
60
66.7
73.7
1.0
96.8
4.1
5.0
SMAJ64
RL
64
71.1
86.9
1.0
114
3.5
5.0
SMAJ64A
RM
64
71.1
78.6
1.0
103
3.9
5.0
SMAJ70
RN
70
77.8
95.1
1.0
125
3.2
5.0
SMAJ70A
RP
70
77.8
86
1.0
113
3.5
5.0
SMAJ75
RQ
75
83.3
102
1.0
134
3.0
5.0
SMAJ75A
RR
75
83.3
92.1
1.0
121
3.3
5.0
SMAJ78
RS
78
86.7
106
1.0
139
2.9
5.0
SMAJ78A
RT
78
86.7
95.8
1.0
126
3.2
5.0
SMAJ85
RU
85
94.4
115
1.0
151
2
5.0
SMAJ85A
RV
85
94.4
104
1.0
137
2.2
5.0
SMAJ90
RW
90
100
122
1.0
160
1.9
5.0
SMAJ90A
RX
90
100
111
1.0
146
2.1
5.0
SMAJ100
RY
100
111
136
1.0
179
1.7
5.0
SMAJ100A
RZ
100
111
123
1.0
162
1.9
5.0
SMAJ110
SD
110
122
149
1.0
196
1.6
5.0
SMAJ110A
SE
110
122
135
1.0
177
1.7
5.0
SMAJ120
SF
120
133
163
1.0
214
1.4
5.0
SMAJ120A
SG
120
133
147
1.0
193
1.6
5.0
SMAJ130
SH
130
144
176
1.0
231
1.3
5.0
SMAJ130A
SK
130
144
159
1.0
209
1.5
5.0
SMAJ150
SL
150
167
204
1.0
266
1.1
5.0
SMAJ150A
SM
150
167
185
1.0
243
1.3
5.0
SMAJ160
SN
160
178
218
1.0
287
1
5.0
SMAJ160A
SP
160
178
197
1.0
259
1.2
5.0
SMAJ170
SQ
170
189
231
1.0
304
1
5.0
SMAJ170A
SR
170
189
209
1.0
275
1.1
5.0
Device
Device
Marking
Code
Breakdown Voltage
Test
VBR (V)
Current
at IT
IT
Min
Max
(mA)
5.0
SMAJ188
ST
188
209
255
1.0
344
0.9
5.0
SMAJ188A
SS
188
209
231
1.0
328
0.91
5.0
Notes:
1. Non-repetitive current pulse, per Fig. 3 and derated above T A=25℃ per Fig. 2
2. Mounted on 5 x 5mm copper pads to each terminal
3. Lead temperature at T L=75℃
4. Measure on 8.3ms single half sine-wave duty cycle=4 pulses per minutes maximum
5. Peak pulse power waveform is 10/1000 us
6. For Bi-Directional devices having V R of 10 volts and under, the I R limit is double.
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