Transient
Voltage
Suppressors
SMAJ Series
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Transient Voltage Suppressors - SMAJ Series
Features
• Fast response time
• Low incremental surge resistance
• Matte tin lead–free Plated
• Halogen ree and RoHS compliant
• Typical I
R
less than 1µA above 10V
• Compatible with industrial standard package DO-214AC
• For surface mounted applications to optimize board space
• 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)
• 400W peak pulsepower capability at 10/1000μs waveform,repetition rate
(duty cycle): 0.01%
• High temperature soldering : 260°C/ 40 seconds at terminals
Cathode
BI
Anode
BI
UNI
UNI
Description
The SMAJ series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning
and other transient voltage events.
Mechanical Characteristics
Rating
Peak Pulse Power Dissipation at TA=25ºC by 10/1000µs
Waveform (Fig.2)(Note 1), (Note 2)
Power Dissipation on Infinite Heat Sink at TA=50°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.
Typical Thermal Resistance Junction to Lead
Typical Thermal Resistance Junction to Ambient
Symbol
P
PPM
P
D
I
FSM
V
F
T
J
,
T
STG
R
uJL
R
uJA
Value
400
3.3
40
3.5/6.5
-55°C to 150°C
30
120
Units
Watts
Watts
Amps
V
°C
°C/W
°C/W
Notes:
1. Non-repetitive current pulse, per Fig.4 and derated above TA=25ºC per Fig. 3.
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only.
4. VF< 3.5V for VBR ≤ 200V and VF< 6.5V for VBR ≥ 201V
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:1
Transient Voltage Suppressors - SMAJ Series
Electriacl Characteristics
Type 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
SMAJ20A
SMAJ22A
SMAJ24A
SMAJ26A
SMAJ28A
SMAJ30A
SMAJ33A
SMAJ36A
SMAJ40A
SMAJ43A
SMAJ45A
SMAJ48A
SMAJ51A
SMAJ54A
SMAJ58A
SMAJ60A
SMAJ64A
SMAJ70A
SMAJ75A
SMAJ78A
SMAJ85A
SMAJ90A
SMAJ100A
SMAJ110A
SMAJ120A
SMAJ130A
SMAJ150A
SMAJ160A
SMAJ170A
SMAJ180A
SMAJ190A
SMAJ200A
SMAJ210A
SMAJ220A
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
SMAJ20CA
SMAJ22CA
SMAJ24CA
SMAJ26CA
SMAJ28CA
SMAJ30CA
SMAJ33CA
SMAJ36CA
SMAJ40CA
SMAJ43CA
SMAJ45CA
SMAJ48CA
SMAJ51CA
SMAJ54CA
SMAJ58CA
SMAJ60CA
SMAJ64CA
SMAJ70CA
SMAJ75CA
SMAJ78CA
SMAJ85CA
SMAJ90CA
SMAJ100CA
SMAJ110CA
SMAJ120CA
SMAJ130CA
SMAJ150CA
SMAJ160CA
SMAJ170CA
SMAJ180CA
SMAJ190CA
SMAJ200CA
SMAJ210CA
SMAJ220CA
Device Marking
Code
UNI
HE
HG
HK
HM
HP
HR
HT
HV
HX
HZ
IE
IG
IK
IM
IP
IR
IT
IV
IX
IZ
JE
JG
JK
JM
JP
JR
JT
JV
JX
JZ
RE
RG
RK
RM
RP
RR
RT
RV
RX
RZ
SE
SG
SK
SM
SP
SR
ST
SV
SX
SZ
ZE
BI
TE
TG
TK
TM
TP
TR
TT
TV
TX
TZ
UE
UG
UK
UM
UP
UR
UT
UV
UX
UZ
VE
VG
VK
VM
VP
VR
VT
VV
VX
VZ
WE
WG
WK
WM
WP
WR
WT
WV
WX
WZ
XE
XG
XK
XM
XP
XR
XT
XV
XX
XZ
YE
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
20.0
22.0
24.0
26.0
28.0
30.0
33.0
36.0
40.0
43.0
45.0
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
190.0
200.0
210.0
220.0
Breakdown
Voltage@I
T
V
BR MIN.
(V) V
BR MAX.
(V)
6.40
7.25
6.67
7.67
7.22
8.30
7.78
8.95
8.33
9.58
8.89
10.23
9.44
10.82
10.00
11.50
11.10
12.80
12.20
14.00
13.30
15.30
14.40
16.50
15.60
17.90
16.70
19.20
17.80
20.50
18.90
21.70
20.00
23.30
22.20
25.50
24.40
28.00
26.70
30.70
28.90
33.20
31.10
35.80
33.30
38.30
36.70
42.20
40.00
46.00
44.40
51.10
47.80
54.90
50.00
57.50
53.30
61.30
56.70
65.20
60.00
69.00
64.40
74.10
66.70
76.70
71.10
81.80
77.80
89.50
83.30
95.80
86.70
99.70
94.40
108.20
100.0
115.50
111.0
128.0
122.0
140.5
133.0
153.0
144.0
165.5
167.0
192.6
178.0
205.0
189.0
217.5
198.0
230.4
209.0
243.2
220.0
256.0
231.0
268.8
242.0
281.6
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
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Maximum
Peak Pulse
Clamping
Current
Voltage@I
PP
VC(V)
I
PP
(A)
9.2
43.5
10.3
38.8
11.2
35.7
12.0
33.3
12.9
31.0
13.6
29.4
14.4
27.7
15.4
26.0
17.0
23.5
18.2
22.0
19.9
20.1
21.5
18.6
23.2
17.2
24.4
16.4
26.0
15.3
27.6
14.5
29.2
13.7
32.4
12.3
35.5
11.2
38.9
10.3
42.1
9.5
45.4
8.8
48.4
8.3
53.3
7.5
58.1
6.9
64.5
6.2
69.4
5.7
72.7
5.5
77.4
5.2
82.4
4.9
87.1
4.6
93.6
4.3
96.8
4.1
103.0
3.9
113.0
3.5
121.0
3.3
126.0
3.2
137.0
2.9
146.0
2.7
162.0
2.5
177.0
2.3
193.0
2.0
209.0
1.9
243.0
1.6
259.0
1.5
275.0
1.4
292.0
1.3
308.0
1.3
324.0
1.2
340.0
1.2
356.0
1.1
Reverse
Leakage
@V
RWM
I
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
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:2
Transient Voltage Suppressors - SMAJ Series
Electriacl Characteristics
Reverse
Breakdown
Stand-Off
Voltage@I
T
Voltage
UNI
BI
UNI
BI
V
RWM
(V)
V
BR MIN.
(V) V
BR MAX.
(V)
SMAJ250A SMAJ250CA
ZG
YG
250.0
279.0
309.0
SMAJ300A SMAJ300CA
ZK
YK
300.0
335.0
371.0
SMAJ350A SMAJ350CA
ZM
YM
350.0
391.0
432.0
SMAJ400A SMAJ400CA
ZP
YP
400.0
447.0
494.0
SMAJ440A SMAJ440CA
ZR
YR
440.0
492.0
543.0
Notes: For bidirectional type having V
R
of 10V and less, the I
R
limit is double.
Type Number
Device Marking
Code
Test
Current
I
T
(mA)
1
1
1
1
1
Maximum
Peak Pulse
Clamping
Current
Voltage@I
PP
VC(V)
I
PP
(A)
405.0
1.0
486.0
0.8
567.0
0.7
648.0
0.6
713.0
0.6
Reverse
Leakage
@V
RWM
I
R
(µA)
1
1
1
1
1
I-V
I-V Curve Characteristics
Curve Characteristics
Uni-directional
I
I
Bi-directional
pp
II
pp
Vc V
BR
V
R
Vc V
BR
V
R
R
V
F
II
R
V
F
T
II
T
V
V
Vc V
BR
V
R
Vc V
BR
V
R
T
II
T
R
II
R
R
II
R
T
II
T
V
R
V
BR
Vc
V
R
V
BR
Vc
V
V
pp
II
pp
pp
II
pp
P
PPM
Peak Pulse Power Dissipation
-- Max power
-- Max power dissipation
PPM
P
PPM
Peak Pulse Power Dissipation
dissipation
V
RR
Stand-off Voltage
-- Maximum voltage that can be applied
be
the TVS without operation
V
R
Stand-off Voltage
-- Maximum voltage that can
to
applied to the TVS without operation
V
BR
BR
Breakdown Voltage
-- Maximum voltage
though the TVS at a specified test current (I
TT
)
BR
V
Breakdown Voltage
-- Maximum voltage that flows
that flows though the TVS at a specified test current (I
T
)
V
CC
C
Clamping Voltage
-- Peak voltage measured across the suppressor at
TVS at a specified Ippm (peak impulse current)
V Clamping Voltage
-- Peak voltage measured across the
a specified Ippm (peak impulse current)
I
RR
R
Reverse Leakage Current
-- Current measured
measured at V
R
I Reverse Leakage Current
-- Current
at V
RR
V
FF
F
Forward Voltage Drop
Drop for Uni-directional
V Forward Voltage
for Uni-directional
Ratings and Characteristic Curves
(T
A
=25°C unless otherwise noted)
(T
A
=25°C unless otherwise noted)
Figure 1 - TVS Transients Clamping Waveform
Voltage Transients
Voltage Transients
Figure 2 - Peak Pulse Power Rating
1000
1000
P
PPM
-Peak Pulse Power (kW)
PPM
Voltage Across TVS
Voltage Across TVS
Voltage or Current
100
100
Current Through TVS
Current Through TVS
10
10
1
1
0.1
0.1
0.000001
0.000001
Time
Time
0.00001
0.00001
0.0001
0.0001
0.001
0.001
-Pulse Width (Sec.)
tt
d
-Pulse Width (Sec.)
d
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:3
P6KE Series
P6KE Series
Transient Voltage Suppressors - SMAJ Series
Ratings
and Characteristic Curves
(T =25°C unless otherwise noted)
(Continued)
and Characteristic Curves
(TA=25°C unless otherwise noted)
Ratings
A
Figure 3 - Pulse Derating Curve
100
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
80
60
40
20
0
Figure 4 - Pulse Waveform
150
I
PPM
- Peak Pulse Cur rent, % I
RSM
tr=10µsec
Peak Value
IPPM
T J =25°C
Pulse Width(td) is de ned
as the point where the peak
current decays to 50% of IPPM
100
Half Value
IPPM
IPPM
2
( )
10/1000µsec. Waveform
as defined by R.E.A
50
0
25
50
75
100
125
150
175
0
td
T
A
-Ambient temperature (ºC)
0
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 5 - Typical Junction Capacitance
10000
Bi-directional V=0V
Figure 6 - Steady State Power Dissipation Derating
Curve
P
M(AV)
, Steady State Power Dissipation (W)
3.6
3.0
2.4
1.8
1.2
0.6
0
0
25
50
75
100 125 150
T
A
- Ambient Temperature (ºC)
175
1000
Uni-directional V=0V
Cj (pF)
Uni-directional @V
R
100
Bi-directional @V
R
10
Tj=25ºC
f=1.0MHz
Vsig=50mVp-p
1
1.0
10.0
100.0
1000.0
V
BR
- Reverse Breakdown Voltage (V)
Figure 7 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
45
I
FSM
- Peak Forward Surve Current
(A)
40
35
30
25
20
15
10
5
0
1
10
Number of Cycles at 60 Hz
100
bargaining
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:4
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