1SMB5.0AT3G Series,
SZ1SMB5.0AT3G Series
600 Watt Peak Power Zener
Transient Voltage
Suppressors
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Unidirectional
The SMB series is designed to protect voltage sensitive
components from high voltage, high energy transients. They have
excellent clamping capability, high surge capability, low zener
impedance and fast response time. The SMB series is supplied in
ON Semiconductor’s exclusive, cost-effective, highly reliable
SURMETIC package and is ideally suited for use in
communication systems, automotive, numerical controls, process
controls, medical equipment, business machines, power supplies and
many other industrial/consumer applications.
PLASTIC SURFACE MOUNT
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
5.0 V − 170 V,
600 W PEAK POWER
SMB
CASE 403A
PLASTIC
Features
Working Peak Reverse Voltage Range − 5.0 V to 170 V
Standard Zener Breakdown Voltage Range − 6.7 V to 199 V
Peak Power − 600 W @ 1.0 ms
ESD Rating of Class 3 (> 16 kV) per Human Body Model
Maximum Clamp Voltage @ Peak Pulse Current
Low Leakage < 5.0 mA Above 10 V
UL 497B for Isolated Loop Circuit Protection
Response Time is Typically < 1.0 ns
SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q101 Qualified and
PPAP Capable
Pb−Free Packages are Available*
Mechanical Characteristics
CASE: Void-free, transfer-molded, thermosetting plastic
FINISH: All external surfaces are corrosion resistant and leads are
readily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260C for 10 Seconds
LEADS: Modified L−Bend providing more contact area to bond pads
POLARITY: Cathode indicated by polarity band
MOUNTING POSITION: Any
Cathode
Anode
MARKING DIAGRAM
AYWW
xx G
G
A
Y
WW
xx
G
= Assembly Location
= Year
= Work Week
= Device Code (Refer to page 3)
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Package
Shipping†
1SMBxxxAT3G
SMB
(Pb−Free)
2,500 /
Tape & Reel
SZ1SMBxxxAT3G
SMB
(Pb−Free)
2,500 /
Tape & Reel
Device
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
DEVICE MARKING INFORMATION
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2012
February, 2012 − Rev. 13
1
See specific marking information in the device marking
column of the Electrical Characteristics table on page 3 of
this data sheet.
Publication Order Number:
1SMB5.0AT3/D
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms
PPK
600
W
DC Power Dissipation @ TL = 75C Measured Zero Lead Length (Note 2)
Derate Above 75C
Thermal Resistance from Junction−to−Lead
PD
3.0
40
25
W
mW/C
C/W
W
mW/C
C/W
RqJL
DC Power Dissipation (Note 3) @ TA = 25C
Derate Above 25C
Thermal Resistance from Junction−to−Ambient
PD
RqJA
0.55
4.4
226
Forward Surge Current (Note 4) @ TA = 25C
IFSM
100
A
TJ, Tstg
−65 to +150
C
Operating and Storage Temperature Range
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. 10 X 1000 ms, non−repetitive.
2. 1 in square copper pad, FR−4 board.
3. FR−4 board, using ON Semiconductor minimum recommended footprint, as shown in 403A case outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
ELECTRICAL CHARACTERISTICS (TA = 25C unless
I
otherwise noted, VF = 3.5 V Max. @ IF (Note 5) = 30 A)
Symbol
Parameter
IPP
Maximum Reverse Peak Pulse Current
VC
Clamping Voltage @ IPP
VRWM
IR
VBR
IF
VC VBR VRWM
Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ VRWM
IR VF
IT
Breakdown Voltage @ IT
IT
Test Current
IF
Forward Current
VF
Forward Voltage @ IF
IPP
Uni−Directional TVS
5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms,
non−repetitive duty cycle.
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2
V
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
ELECTRICAL CHARACTERISTICS
Device*
Device
Marking
VC @ IPP (Note 8)
Breakdown Voltage
VRWM
(Note 6)
IR @ VRWM
V
mA
Min
Nom
@ IT
VC
IPP
Ctyp
(Note 9)
Max
mA
V
A
pF
VBR (Note 7) Volts
1SMB5.0AT3G
1SMB6.0AT3G
1SMB6.5AT3G
1SMB7.0AT3G
KE
KG
KK
KM
5.0
6.0
6.5
7.0
800
800
500
500
6.40
6.67
7.22
7.78
6.7
7.02
7.6
8.19
7.0
7.37
7.98
8.6
10
10
10
10
9.2
10.3
11.2
12.0
65.2
58.3
53.6
50.0
2700
2300
2140
2005
1SMB7.5AT3G
1SMB8.0AT3G
1SMB8.5AT3G
1SMB9.0AT3G
KP
KR
KT
KV
7.5
8.0
8.5
9.0
100
50
10
5.0
8.33
8.89
9.44
10.0
8.77
9.36
9.92
10.55
9.21
9.83
10.4
11.1
1.0
1.0
1.0
1.0
12.9
13.6
14.4
15.4
46.5
44.1
41.7
39.0
1890
1780
1690
1605
1SMB10AT3G
1SMB11AT3G
1SMB12AT3G
1SMB13AT3G
KX
KZ
LE
LG
10
11
12
13
5.0
5.0
5.0
5.0
11.1
12.2
13.3
14.4
11.7
12.85
14
15.15
12.3
13.5
14.7
15.9
1.0
1.0
1.0
1.0
17.0
18.2
19.9
21.5
35.3
33.0
30.2
27.9
1460
1345
1245
1160
1SMB14AT3G
1SMB15AT3G
1SMB16AT3G
1SMB17AT3G
LK
LM
LP
LR
14
15
16
17
5.0
5.0
5.0
5.0
15.6
16.7
17.8
18.9
16.4
17.6
18.75
19.9
17.2
18.5
19.7
20.9
1.0
1.0
1.0
1.0
23.2
24.4
26.0
27.6
25.8
24.0
23.1
21.7
1085
1020
965
915
1SMB18AT3G
1SMB20AT3G
1SMB22AT3G
1SMB24AT3G
LT
LV
LX
LZ
18
20
22
24
5.0
5.0
5.0
5.0
20.0
22.2
24.4
26.7
21.05
23.35
25.65
28.1
22.1
24.5
26.9
29.5
1.0
1.0
1.0
1.0
29.2
32.4
35.5
38.9
20.5
18.5
16.9
15.4
870
790
730
675
1SMB26AT3G
1SMB28AT3G
1SMB30AT3G
1SMB33AT3G
ME
MG
MK
MM
26
28
30
33
5.0
5.0
5.0
5.0
28.9
31.1
33.3
36.7
30.4
32.75
35.05
38.65
31.9
34.4
36.8
40.6
1.0
1.0
1.0
1.0
42.1
45.4
48.4
53.3
14.2
13.2
12.4
11.3
630
590
555
510
1SMB36AT3G
1SMB40AT3G
1SMB43AT3G
1SMB45AT3G
MP
MR
MT
MV
36
40
43
45
5.0
5.0
5.0
5.0
40.0
44.4
47.8
50.0
42.1
46.75
50.3
52.65
44.2
49.1
52.8
55.3
1.0
1.0
1.0
1.0
58.1
64.5
69.4
72.7
10.3
9.3
8.6
8.3
470
430
400
385
1SMB48AT3G
1SMB51AT3G
1SMB54AT3G
1SMB58AT3G
MX
MZ
NE
NG
48
51
54
58
5.0
5.0
5.0
5.0
53.3
56.7
60.0
64.4
56.1
59.7
63.15
67.8
58.9
62.7
66.3
71.2
1.0
1.0
1.0
1.0
77.4
82.4
87.1
93.6
7.7
7.3
6.9
6.4
365
345
330
310
1SMB60AT3G
1SMB64AT3G
1SMB70AT3G
1SMB75AT3G
NK
NM
NP
NR
60
64
70
75
5.0
5.0
5.0
5.0
66.7
71.1
77.8
83.3
70.2
74.85
81.9
87.7
73.7
78.6
86
92.1
1.0
1.0
1.0
1.0
96.8
103
113
121
6.2
5.8
5.3
4.9
300
280
260
245
1SMB85AT3G
1SMB90AT3G
1SMB100AT3G
NV
NX
NZ
85
90
100
55.0
5.0
5.0
94.4
100
111
99.2
105.5
117
104
111
123
1.0
1.0
1.0
137
146
162
4.4
4.1
3.7
220
210
190
1SMB110AT3G
1SMB120AT3G
1SMB130AT3G
1SMB150AT3G
PE
PG
PK
PM
110
120
130
150
5.0
5.0
5.0
5.0
122
133
144
167
128.5
140
151.5
176
135
147
159
185
1.0
1.0
1.0
1.0
177
193
209
243
3.4
3.1
2.9
2.5
175
160
150
135
1SMB160AT3G
1SMB170AT3G
PP
PR
160
170
5.0
5.0
178
189
187.5
199
197
209
1.0
1.0
259
275
2.3
2.2
125
120
6. A transient suppressor is normally selected according to the working peak reverse voltage (VRWM), which should be equal to or greater than
the DC or continuous peak operating voltage level.
7. VBR measured at pulse test current IT at an ambient temperature of 25C.
8. Surge current waveform per Figure 2 and derate per Figure 4 of the General Data − 600 W at the beginning of this group.
9. Bias Voltage = 0 V, F = 1 MHz, TJ = 25C
†Please see 1SMB10CAT3 to 1SMB78CAT3 for Bidirectional devices.
* Include SZ-prefix devices where applicable.
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3
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 2
PULSE WIDTH (tP) IS DEFINED AS
THAT POINT WHERE THE PEAK
CURRENT DECAYS TO 50% OF
IPP.
tr 10 ms
100
10
PEAK VALUE - IPP
VALUE (%)
PPK, PEAK POWER (kW)
100
I
HALF VALUE - PP
2
50
1
tP
0.1
0.1 ms
1 ms
10 ms
100 ms
1 ms
0
10 ms
0
1
2
tP, PULSE WIDTH
5
4
t, TIME (ms)
Figure 1. Pulse Rating Curve
Figure 2. Pulse Waveform
10,000
160
TJ = 25C
f = 1 MHz
140
120
C, CAPACITANCE (pF)
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ TA = 25 C
3
100
80
60
40
20
1SMB10AT3G
100
0
25
50
75
100
125
150
1SMB48AT3G
1SMB170AT3G
10
1
0
1SMB5.0AT3G
1000
1
10
TA, AMBIENT TEMPERATURE (C)
100
1000
BIAS VOLTAGE (VOLTS)
Figure 4. Typical Junction Capacitance vs.
Bias Voltage
Figure 3. Pulse Derating Curve
Zin
LOAD
Vin
VL
Figure 5. Typical Protection Circuit
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4
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
APPLICATION NOTES
Response Time
minimum lead lengths and placing the suppressor device as
close as possible to the equipment or components to be
protected will minimize this overshoot.
Some input impedance represented by Zin is essential to
prevent overstress of the protection device. This impedance
should be as high as possible, without restricting the circuit
operation.
In most applications, the transient suppressor device is
placed in parallel with the equipment or component to be
protected. In this situation, there is a time delay associated
with the capacitance of the device and an overshoot
condition associated with the inductance of the device and
the inductance of the connection method. The capacitive
effect is of minor importance in the parallel protection
scheme because it only produces a time delay in the
transition from the operating voltage to the clamp voltage as
shown in Figure 6.
The inductive effects in the device are due to actual
turn-on time (time required for the device to go from zero
current to full current) and lead inductance. This inductive
effect produces an overshoot in the voltage across the
equipment or component being protected as shown in
Figure 7. Minimizing this overshoot is very important in the
application, since the main purpose for adding a transient
suppressor is to clamp voltage spikes. The SMB series have
a very good response time, typically < 1.0 ns and negligible
inductance. However, external inductive effects could
produce unacceptable overshoot. Proper circuit layout,
V
Duty Cycle Derating
The data of Figure 1 applies for non-repetitive conditions
and at a lead temperature of 25C. If the duty cycle increases,
the peak power must be reduced as indicated by the curves
of Figure 8. Average power must be derated as the lead or
ambient temperature rises above 25C. The average power
derating curve normally given on data sheets may be
normalized and used for this purpose.
At first glance the derating curves of Figure 8 appear to be
in error as the 10 ms pulse has a higher derating factor than
the 10 ms pulse. However, when the derating factor for a
given pulse of Figure 8 is multiplied by the peak power
value of Figure 1 for the same pulse, the results follow the
expected trend.
V
Vin (TRANSIENT)
OVERSHOOT DUE TO
INDUCTIVE EFFECTS
Vin (TRANSIENT)
VL
VL
Vin
td
tD = TIME DELAY DUE TO CAPACITIVE EFFECT
t
t
Figure 6.
Figure 7.
1
0.7
DERATING FACTOR
0.5
0.3
0.2
PULSE WIDTH
10 ms
0.1
0.07
0.05
1 ms
0.03
100 ms
0.02
0.01
10 ms
0.1 0.2
0.5
1
2
5
10
D, DUTY CYCLE (%)
20
50 100
Figure 8. Typical Derating Factor for Duty Cycle
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5
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
UL RECOGNITION
including Strike Voltage Breakdown test, Endurance
Conditioning,
Temperature
test,
Dielectric
Voltage-Withstand test, Discharge test and several more.
Whereas, some competitors have only passed a
flammability test for the package material, we have been
recognized for much more to be included in their Protector
category.
The entire series has Underwriters Laboratory
Recognition for the classification of protectors (QVGQ2)
under the UL standard for safety 497B and File #E210057.
Many competitors only have one or two devices recognized
or have recognition in a non-protective category. Some
competitors have no recognition at all. With the UL497B
recognition, our parts successfully passed several tests
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6
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
PACKAGE DIMENSIONS
SMB
CASE 403A−03
ISSUE H
HE
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P.
E
b
DIM
A
A1
b
c
D
E
HE
L
L1
D
POLARITY INDICATOR
OPTIONAL AS NEEDED
MIN
1.90
0.05
1.96
0.15
3.30
4.06
5.21
0.76
MILLIMETERS
NOM
MAX
2.20
2.28
0.10
0.19
2.03
2.20
0.23
0.31
3.56
3.95
4.32
4.60
5.44
5.60
1.02
1.60
0.51 REF
MIN
0.075
0.002
0.077
0.006
0.130
0.160
0.205
0.030
INCHES
NOM
0.087
0.004
0.080
0.009
0.140
0.170
0.214
0.040
0.020 REF
MAX
0.090
0.007
0.087
0.012
0.156
0.181
0.220
0.063
A
L
L1
A1
c
SOLDERING FOOTPRINT*
2.261
0.089
2.743
0.108
2.159
0.085
SCALE 8:1
mm Ǔ
ǒinches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SURMETIC is a registered trademark of Semiconductor Components Industries, LLC.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81−3−5817−1050
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