DATA SHEET
TRANSIENT VOLTAGE SUPPRESSORS
AC/DC POWER SUPPLY
SMAJ
series
Product specification– June 30, 2023 V.4
RoHS compliant & Halogen free
Circuit Protection
Product Specification
Transient Voltage Suppressors
2
9
SMAJ
Transient Voltage Suppressors (TVS) Data Sheet
Features
■ For surface mounted applications in order to optimize board space
■ Low profile package
■ Glass passivated junction
■ Low inductance
■ Excellent clamping capability
■ 400W peak pulse power capability at 10/1000μs waveform,
repetition rate (duty cycle): 0.01%
■ Fast response time
■ Typical IR less than 1μA above 10V
■ High Temperature soldering: 260℃/10 seconds at terminals
■ Plastic package has underwriters laboratory flammability 94V-0
■ Meets MSL level 1, per J-STD-020
■ Safety certification: UL
■ IEC61000-4-2 ESD 30KV Air, 30KV contact compliance
Mechanical Data
■ Case: JEDEC DO-214AC. Molded plastic over glass passivated junction
■ Terminal: Tin plated, solderable per MIL-STD-750, Method 2026
■ Polarity: Color band denotes cathode except bi-directional models
■ Standard Packaging: 12mm tape (EIA STD RS-481)
■ Weight: 0.07g
Applications
■ I/O interface
■ AC/DC power supply
■ Low frequency signal transmission line (RS232, RS485, etc.)
Maximum Ratings and Characteristics
Ratings at 25℃ ambient temperature unless otherwise specified.
Rating
Symbol
Value
Units
Peak pulse power dissipation at 10/1000μs waveform
(Note1, Note2, Fig.1)
PPPM
Minimum 400
Watts
Peak pulse current of at 10/1000μs waveform (Note 1, Fig.3)
IPPM
See Table
Amps
PM(AV)
3.3
Watts
IFSM
40
Amps
TJ,TSTG
-55 to +150
℃
Typical thermal resistance junction to lead
RθJL
30
℃/W
Typical thermal resistance junction to ambient
RθJA
120
℃/W
Steady state power dissipation at TA=50℃ (Fig.5)
Peak forward surge current, 8.3ms single half sine-wave
superimposed on rated load, (JEDEC Method) (Note3, Fig.6)
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×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.
www.ya geo.com
Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
3
9
SMAJ
Dimensions (SMA/DO-214AC)
Product:
Millimeters
Inches
Symbol
Cathode Band
Min.
Max.
Min.
Max.
L
3.99
4.50
0.157
0.177
D
2.54
2.79
0.100
0.110
D1
1.25
1.65
0.049
0.065
T
4.93
5.28
0.194
0.208
T1
0.76
1.52
0.030
0.060
d
-
0.203
-
0.008
H
2.00
2.50
0.079
0.098
H1
1.98
2.29
0.078
0.090
D1 D
L
H1 H
d
T1
T
1.68mm
Pad:
1.75mm
1.88mm
1.75mm
Electrical Characteristics (TA=25℃)
Part Number
Device
Marking
Code
Reverse
Stand-Off
Voltage
Breakdown
Voltage
@IT
Test
Current
Maximum
Clamping
Voltage
@IPP
Peak
Pulse
Current
Reverse
Leakage
@VRWM
Unidirectional
Bidirectional
UNI
BI
VRWM(V)
VBR(V)
IT(mA)
VC(V)
IPP(A)
IR(μA)
SMAJ5.0A
SMAJ5.0CA
AE
WE
5.0
6.40~7.00
10
9.2
43.5
800
SMAJ6.0A
SMAJ6.0CA
AG
WG
6.0
6.67~7.37
10
10.3
38.8
800
SMAJ6.5A
SMAJ6.5CA
AK
WK
6.5
7.22~7.98
10
11.2
35.7
500
SMAJ7.0A
SMAJ7.0CA
AM
WM
7.0
7.78~8.60
10
12.0
33.3
200
SMAJ7.5A
SMAJ7.5CA
AP
WP
7.5
8.33~9.21
1
12.9
31.0
100
SMAJ8.0A
SMAJ8.0CA
AR
WR
8.0
8.89~9.83
1
13.6
29.4
50
SMAJ8.5A
SMAJ8.5CA
AT
WT
8.5
9.44~10.40
1
14.4
27.8
20
SMAJ9.0A
SMAJ9.0CA
AV
WV
9.0
10.00~11.10
1
15.4
26.0
10
SMAJ10A
SMAJ10CA
AX
WX
10.0
11.10~12.30
1
17.0
23.5
5
SMAJ11A
SMAJ11CA
AZ
WZ
11.0
12.20~13.50
1
18.2
22.0
1
SMAJ12A
SMAJ12CA
BE
XE
12.0
13.30~14.70
1
19.9
20.1
1
SMAJ13A
SMAJ13CA
BG
XG
13.0
14.40~15.90
1
21.5
18.6
1
SMAJ14A
SMAJ14CA
BK
XK
14.0
15.60~17.20
1
23.2
17.2
1
SMAJ15A
SMAJ15CA
BM
XM
15.0
16.70~18.50
1
24.4
16.4
1
SMAJ16A
SMAJ16CA
BP
XP
16.0
17.80~19.70
1
26.0
15.4
1
SMAJ17A
SMAJ17CA
BR
XR
17.0
18.90~20.90
1
27.6
14.5
1
SMAJ18A
SMAJ18CA
BT
XT
18.0
20.00~22.10
1
29.2
13.7
1
www.ya geo.com
Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
Part Number
Device
Marking
Code
4
9
SMAJ
Reverse
Stand-Off
Voltage
Breakdown
Voltage
@IT
Test
Current
Maximum
Clamping
Voltage
@IPP
Peak
Pulse
Current
Reverse
Leakage
@VRWM
Unidirectional
Bidirectional
UNI
BI
VRWM(V)
VBR(V)
IT(mA)
VC(V)
IPP(A)
IR(μA)
SMAJ20A
SMAJ20CA
BV
XV
20.0
22.20~24.50
1
32.4
12.3
1
SMAJ22A
SMAJ22CA
BX
XX
22.0
24.40~26.90
1
35.5
11.3
1
SMAJ24A
SMAJ24CA
BZ
XZ
24.0
26.70~29.50
1
38.9
10.3
1
SMAJ26A
SMAJ26CA
CE
YE
26.0
28.90~31.90
1
42.1
9.5
1
SMAJ28A
SMAJ28CA
CG
YG
28.0
31.10~34.40
1
45.4
8.8
1
SMAJ30A
SMAJ30CA
CK
YK
30.0
33.30~36.80
1
48.4
8.3
1
SMAJ33A
SMAJ33CA
CM
YM
33.0
36.70~40.60
1
53.3
7.5
1
SMAJ36A
SMAJ36CA
CP
YP
36.0
40.00~44.20
1
58.1
6.9
1
SMAJ40A
SMAJ40CA
CR
YR
40.0
44.40~49.10
1
64.5
6.2
1
SMAJ43A
SMAJ43CA
CT
YT
43.0
47.80~52.80
1
69.4
5.8
1
SMAJ45A
SMAJ45CA
CV
YV
45.0
50.00~55.30
1
72.7
5.5
1
SMAJ48A
SMAJ48CA
CX
YX
48.0
53.30~58.90
1
77.4
5.2
1
SMAJ51A
SMAJ51CA
CZ
YZ
51.0
56.70~62.70
1
82.4
4.9
1
SMAJ54A
SMAJ54CA
RE
ZE
54.0
60.00~66.30
1
87.1
4.6
1
SMAJ58A
SMAJ58CA
RG
ZG
58.0
64.40~71.20
1
93.6
4.3
1
SMAJ60A
SMAJ60CA
RK
ZK
60.0
66.70~73.70
1
96.8
4.1
1
SMAJ64A
SMAJ64CA
RM
ZM
64.0
71.10~78.60
1
103.0
3.9
1
SMAJ70A
SMAJ70CA
RP
ZP
70.0
77.80~86.00
1
113.0
3.5
1
SMAJ75A
SMAJ75CA
RR
ZR
75.0
83.30~92.10
1
121.0
3.3
1
SMAJ78A
SMAJ78CA
RT
ZT
78.0
86.70~95.80
1
126.0
3.2
1
SMAJ85A
SMAJ85CA
RV
ZV
85.0
94.40~104.00
1
137.0
2.9
1
SMAJ90A
SMAJ90CA
RX
ZX
90.0
100.00~111.00
1
146.0
2.7
1
SMAJ100A
SMAJ100CA
RZ
ZZ
100.0
111.00~123.00
1
162.0
2.5
1
SMAJ110A
SMAJ110CA
SE
VE
110.0
122.00~135.00
1
177.0
2.3
1
SMAJ120A
SMAJ120CA
SG
VG
120.0
133.00~147.00
1
193.0
2.1
1
SMAJ130A
SMAJ130CA
SK
VK
130.0
144.00~159.00
1
209.0
1.9
1
SMAJ150A
SMAJ150CA
SM
VM
150.0
167.00~185.00
1
243.0
1.6
1
SMAJ160A
SMAJ160CA
SP
VP
160.0
178.00~197.00
1
259.0
1.5
1
SMAJ170A
SMAJ170CA
SR
VR
170.0
189.00~209.00
1
275.0
1.5
1
SMAJ180A
SMAJ180CA
ST
VT
180.0
201.00~222.00
1
292.0
1.4
1
SMAJ190A
SMAJ190CA
SU
YU
190.0
211.00~233.00
1
308.0
1.3
1
SMAJ200A
SMAJ200CA
SV
VV
200.0
224.00~247.00
1
324.0
1.2
1
SMAJ210A
SMAJ210CA
SW
YW
210.0
237.00~263.00
1
340.0
1.2
1
SMAJ220A
SMAJ220CA
GE
VX
220.0
246.00~272.00
1
356.0
1.1
1
SMAJ250A
SMAJ250CA
SZ
VZ
250.0
279.00~309.00
1
405.0
1.0
1
SMAJ300A
SMAJ300CA
TE
UE
300.0
335.00~371.00
1
486.0
0.8
1
SMAJ350A
SMAJ350CA
TG
UG
350.0
391.00~432.00
1
567.0
0.7
1
SMAJ400A
SMAJ400CA
TK
UK
400.0
447.00~494.00
1
648.0
0.6
1
SMAJ440A
SMAJ440CA
TM
UM
440.0
492.00~543.00
1
713.0
0.6
1
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Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
5
9
SMAJ
Ratings and Characteristic Curves (T A=25℃ unless otherwise noted)
Figure 1. Peak Pulse Power Rating Curve
Figure 2. Pulse Derating Curve
Peak Pulse Power (PPP) or Current (IPP)
Derating in Percentage %
PPPM - Peak Pulse Power (kW)
10
1
0.2×0.2″(5.0×5.0mm)
Copper Pad Area
0.1
1
10
100
100
80
60
40
20
0
1000
0
td-Pulse Width (µs)
100
125
150
175
10000
Bi-directional V=0V
1000
Cj (pF)
IPPM - Peak Pulse Current, %IRSM
100
Uni-directional V=0V
Peak Value IPPM
Half Value IPPM (IPPM/2)
Uni-directional @VR
100
50
10/1000µs Waveform
as defined by R.E.A
10
td
0
0
Bi-directional @VR
TJ=25℃
f=1.0MHz
Vsig=50mVp-p
1
1.0
2.0
3.0
1
4.0
t-Time (ms)
1000
Surge Current Uni-Directional Only
IFSM - Peak Forward Surve Current (A)
3.6
3.0
2.4
1.8
1.2
0.6
0
25
100
Figure 6. Maximum Non-Repetitive Forward
Curve
0
10
VBR-Reverse Breakdown Voltage (V)
Figure 5. Steady State Power Dissipation Derating
PM(AV), Steady State Power Dissipation (W)
75
Figure 4. Typical Junction Capacitance
TJ=25℃
Pulse Width(td) is defined as
the point where the peak
current decays to 50% of IPPM
tr=10µs
50
TA-Ambient Temperature (℃)
Figure 3. Pulse Waveform
150
25
50
75
100
125
TA-Ambient Temperature (℃)
150
175
45
40
35
30
25
20
15
10
5
0
1
10
100
Number of Cycles at 60Hz
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Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
6
9
SMAJ
Recommended Soldering Conditions
Reflow Soldering
Critical Zone
TL to TP
tP
TP
Ramp-up
TL
tL
Temperature
TS max
TS min
Ramp-down
tS
Preheat
25
t 25℃ to Peak
Time
Recommended Conditions
Profile Feature
Pb-Free Assembly
Average ramp-up rate (TL to TP)
3℃/second max.
Preheat
-Temperature Min (TS min)
-Temperature Max (TS max)
-Time (min to max) (tS)
150℃
200℃
60-180 seconds
TS max to TL
-Ramp-up Rate
3℃/second max.
Time maintained above:
-Temperature (TL)
-Time (tL)
217℃
60-150 seconds
Peak Temperature (TP)
260℃
Time within 5℃ of actual Peak Temperature (tP)
Ramp-down Rate
Time 25℃ to Peak Temperature
20-40 seconds
6℃/second max.
8 minutes max.
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Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
7
9
SMAJ
Marking Code
Cathode Band
YXXX
YXXX
AE
Logo
WE
Intermal Control Code
Logo
Marking Code
Intermal Control Code
Marking Code
Part Number Code
SMAJ
XXX C A / XXXX
Package Code
TR7:7 inch reel package
TR13:13 inch reel package
5% VBR Voltage Tolerance
Bidirectional
VRWM Voltage
Series Code
Ordering Code for Different Package
7 inch reel package: Add suffix “ /TR7 ” at the end of the part number, such as SMAJXXXCA/TR7
13 inch reel package: Add suffix “ /TR13 ” at the end of the part number, such as SMAJXXXCA/TR13
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Jun. 30, 2023 V.4
Circuit Protection
Product Specification
Transient Voltage Suppressors
8
9
SMAJ
Packaging
Tape
P0
Symbol
Dimension (mm)
W
12.00±0.20
P0
4.00±0.10
P1
4.00±0.10
P2
2.00±0.10
D0
Φ1.5±0.10
D1
Φ1.5±0.10
E
1.75±0.10
F
5.50±0.05
A0
A0
2.79±0.10
SECTION A-A
B0
5.33±0.10
K0
2.55±0.15
T
0.25±0.05
D2
Φ178.0±2.0
D3
Φ50.0Min.
D4
Φ13.0±0.5
W1
16.0±2.0
P1
P2
D0
B
T
E
F
A
A
D1
B
W
B0
K0
SECTION B-B
7” Reel
D4
D3
D2
13” Reel
W1
Quantity: 1000PCS
D5
Φ330.0±2.0
D6
Φ13.5±0.5
H
2.5±1.0
W2
16.0±2.0
Quantity: 5000PCS
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Jun. 30, 2023 V.4
Product specification
Circuit Protection Components
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