January 2018
DocID5616 Rev 11
1/11
This is information on a product in full production.
www.st.com
SMBJ
Transil™
Datasheet - production data
Features
Peak pulse power:
600 W (10/1000 μs)
4 kW (8/20 μs)
Stand-off voltage range: from 5 V to 188 V
Unidirectional and bidirectional types
Low leakage current:
0.2 μA at 25 °C
1 μA at 85 °C
Operating Tj max: 150 °C
High power capability at Tj max:
515 W (10/1000 μs)
JEDEC registered package outline
Complies with the following standards
IEC 61000-4-2 level 4:
15 kV (air discharge)
8 kV (contact discharge)
IEC 61000-4-5
MIL STD 883G, method 3015-7: class 3B:
25 kV HBM (human body model)
Resin meets UL 94, V0
MIL-STD-750, method 2026 soldererability
EIA STD RS-481 and IEC 60286-3 packing
IPC 7531 footprint
Description
The SMBJ Transil series has been designed to
protect sensitive equipment against electrostatic
discharges according to IEC 61000-4-2, and MIL
STD 883, method 3015, and electrical over stress
according to IEC 61000-4-4 and 5. These
devices are more generally used against surges
below 600 W (10/1000 μs).
Planar technology makes these devices suitable
for high-end equipment and SMPS where low
leakage current and high junction temperature
are required to provide reliability and stability
over time.
SMBJ are packaged in SMB (SMB footprint in
accordance with IPC 7531 standard).
Transil™ is a trademark of STMicroelectronics.
K
A
Unidirectional Bidirectional
SMB
(JEDEC DO-214AA)
K
A
Characteristics
2/11
DocID5616 Rev 11
1 Characteristics
Table 1: Absolute maximum ratings (Tamb = 25 °C)
Symbol
Parameter
Value
Unit
PPP
Peak pulse power dissipation
Tj initial = Tamb
600
W
Tj
Operating junction temperature range
-55 to +150
°C
Tstg
Storage temperature range
-65 to +150
°C
TL
Maximum lead temperature for soldering during 10 s
260
°C
Table 2: Thermal resistance
Symbol
Parameter
Value
Unit
Rth(j-l)
Junction to leads
20
°C/W
Rth(j-a)
Junction to ambient on printed circuit on recommended pad layout
100
°C/W
Figure 1: Electrical characteristics - parameter definitions
Figure 2: Pulse definition for electrical characteristics
SMBJ
Characteristics
DocID5616 Rev 11
3/11
Table 3: Electrical characteristics parameter values (Tamb = 25 °C, unless otherwise specified)
Order code
IRM max at VRM
VBR at IR(1)
10 / 1000 µs
8 / 20µs
αT(2)
VCL
IPP
RD
VCL
IPP
RD
25 °C
85 °C
Min.
Typ.
Max.
Max.
Max.
Max.
µA
V
V
mA
V(3)
A(4)
Ω
V
A
Ω
10-
4/°C
SMBJ5.A/CA
20
50
5.0
6.40
6.74
10
9.2
68
0.031
14.4
275
0.027
5.7
SMBJ6.0A/CA
20
50
6.0
6.70
7.05
10
10.3
61
0.048
14.8
270
0.027
5.9
SMBJ6.5A/CA
20
50
6.5
7.20
7.58
10
11.2
56
0.058
15.2
266
0.027
6.1
SMBJ8.5A/CA
20
50
8.5
9.40
9.90
1
14.4
41.7
0.096
19.5
205
0.044
7.3
SMBJ10A/CA
0.2
1
10
11.1
11.7
1
17
37
0.127
21.7
184
0.051
7.8
SMBJ12A/CA
0.2
1
12
13.3
14.0
1
19.9
31
0.168
25.3
157
0.068
8.3
SMBJ13A/CA
0.2
1
13
14.4
15.2
1
21.5
29
0.191
27.2
147
0.076
8.4
SMBJ15A/CA
0.2
1
15
16.7
17.6
1
24.4
25.1
0.236
32.5
123
0.114
8.8
SMBJ16A/CA
0.2
1
16
17.8
18.7
1
26
23.1
0.276
34.4
116
0.127
8.8
SMBJ18A/CA
0.2
1
18
20.0
21.1
1
29.2
21.5
0.328
39.3
102
0.168
9.2
SMBJ20A/CA
0.2
1
20
22.2
23.4
1
32.4
19.4
0.404
42.8
93
0.196
9.4
SMBJ22A/CA
0.2
1
22
24.4
25.7
1
35.5
17.7
0.481
48.3
83
0.257
9.6
SMBJ24A/CA
0.2
1
24
26.7
28.1
1
38.9
16
0.587
50
80
0.256
9.6
SMBJ26A/CA
0.2
1
26
28.9
30.4
1
42.1
14.9
0.683
53.5
75
0.288
9.7
SMBJ28A/CA
0.2
1
28
31.1
32.7
1
45.4
13.8
0.802
59
68
0.363
9.8
SMBJ30A/CA
0.2
1
30
33.3
35.1
1
48.4
13
0.888
64.3
62
0.443
9.9
SMBJ33A/CA
0.2
1
33
36.7
38.6
1
53.3
11.8
1.08
69.7
57
0.512
10.0
SMBJ36A/CA
0.2
1
36
40.0
42.1
1
58.1
10.3
1.35
76
52
0.611
10.0
SMBJ40A/CA
0.2
1
40
44.4
46.7
1
64.5
9.7
1.59
84
48
0.728
10.1
SMBJ48A/CA
0.2
1
48
53.3
56.1
1
77.4
8.1
2.28
100
40
1.03
10.3
SMBJ58A/CA
0.2
1
58
64.4
67.8
1
93.6
6.7
3.34
121
33
1.51
10.4
SMBJ70A/CA
0.2
1
70
77.8
81.9
1
113
5.5
4.91
146
27
2.22
10.5
SMBJ85A/CA
0.2
1
85
94
99
1
137
4.6
7.18
178
22.5
3.29
10.6
SMBJ100A/CA
0.2
1
100
111
117
1
162
3.8
10.3
212
19
4.69
10.7
SMBJ130A/CA
0.2
1
130
144
152
1
209
3
16.5
265
15
7.03
10.8
SMBJ154A/CA
0.2
1
154
171
180
1
246
2.4
23.8
317
12.6
10.2
10.8
SMBJ170A/CA
0.2
1
170
189
199
1
275
2.2
30.0
353
11.3
12.7
10.8
SMBJ188A/CA
0.2
1
188
209
220
1
328
2
48.5
388
10.3
15.2
10.8
Notes:
(1)Pulse test: tp < 50 ms
(2)To calculate VBR or VCL versus junction temperature, use the following formulas:
VBR at TJ = VBR at 25 °C x (1 + αT x (TJ - 25))
VCL at TJ = VCL at 25 °C x (1 + αT x (TJ-25))
(3)To calculate maximum clamping voltage at other surge level, use the following formula:
VCLmax = VBR max + RD x IPPappli where IPPappli is the surge current in the application
Characteristics
4/11
DocID5616 Rev 11
(4)Surge capability given for both directions for unidirectional and bidirectional types.
1.1 Characteristics (curves)
Figure 3: Peak pulse power dissipation versus
initial junction temperature
Figure 4: Peak pulse power versus exponential
pulse duration (Tamb = 25 °C)
Figure 5: Clamping voltage versus peak pulse current (exponential waveform, maximum values)
0
100
200
300
400
500
600
700
0 25 50 75 100 125 150 175
Ppp (W)
Tj(°C)
0.1
1.0
10.0
100.0
1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01
PPP(kW)
Tjinitial = 25 °C
tP(ms)
IPP(A )
0.1
1.0
10.0
100.0
1000.0
1 10 100 1000
10/1000 µs
Tjinitial=25 °C
8/20 µs
10 ms
SMBJ5.0A
SMBJ188A
SMBJ12A
SMBJ24A
SMBJ40A
SMBJ85A
SMBJ5.0A
SMBJ188A
SMBJ12A
SMBJ24A
SMBJ40A
SMBJ85A
VCL(V)
SMBJ
Characteristics
DocID5616 Rev 11
5/11
Figure 6: Junction capacitance versus reverse
applied voltage (typical values) (SMBJxxA)
Figure 7: Junction capacitance versus reverse
applied voltage (typical values) (SMBJxxCA)
Figure 8: Peak forward voltage drop versus peak
forward current (typical values)
Figure 9: Relative variation of thermal impedance
junction to ambient versus pulse duration
Figure 10: Thermal resistance junction to ambient
versus copper surface under each lead (printed
circuit board FR4, eCu = 35 μm)
Figure 11: Leakage current versus junction
temperature (typical values)
10
100
1000
10000
1 10 100 1000
C(pF)
F=1 MHz
Vosc=30 mVRMS
Tj=25 °C
SMBJ5.0A
SMBJ12A
SMBJ24A
SMBJ40A
SMBJ85A
SMBJ188A
VR(V)
10
100
1000
10000
1 10 100 1000
C(pF)
F=1 MHz
Vosc=30 mVRMS
Tj=25 °C
SMBJ5.0CA
SMBJ12CA
SMBJ24CA
SMBJ40CA
SMBJ85CA
SMBJ188CA
VR(V)
IFM(A)
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Tj=25 °C
Tj=125 °C
VFM(V)
0.01
0.10
1.00
1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03
Zth(j-a) / Rth(j-a)
tP(s)
Recommended pad layout
PCB FR4, copper thickness = 35 µm
0
10
20
30
40
50
60
70
80
90
100
110
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Rth(j-a)(°C/W)
(printed circuit board FR4,
copper thic kness = 35 µm)
SCu(cm²)
IR(nA)
1.E-01
1.E+00
1.E+01
1.E+02
1.E+03
25 50 75 100 125 150
VR=VRM
VRM ≥10V
VR=VRM
VRM < 10 V
T (° C)
j
Package information
6/11
DocID5616 Rev 11
2 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Case: JEDEC DO214-AA molded plastic over planar junction
Terminals: solder plated, solderable per MIL-STD-750, method 2026
Polarity: for unidirectional types the band indicates cathode.
Flammability: epoxy is rated UL94V-0
RoHS package
2.1 SMB package information
Figure 12: SMB package outline
SMBJ
Package information
DocID5616 Rev 11
7/11
Table 4: SMB package mechanical data
Ref.
Dimensions
Millimeters
Inches
Min.
Max.
Min.
Max.
A1
1.90
2.45
0.0748
0.0965
A2
0.05
0.20
0.0020
0.0079
b
1.95
2.20
0.0768
0.0867
c
0.15
0.40
0.0059
0.0157
D
3.30
3.95
0.1299
0.1556
E
5.10
5.60
0.2008
0.2205
E1
4.05
4.60
0.1594
0.1811
L
0.75
1.50
0.0295
0.0591
Figure 13: SMB recommended footprint
Figure 14: Marking layout
millimeters
(inches)
1.62
0.064 1.62
0.064
2.60
(0.102)
5.84
(0.230)
2.18
(0.086)
Note: Marking layout can vary according to assembly location.
y ww
e
z
x x x e: ECOPACK compliance
XXX: Marking
Z: Manufacturing location
Y:Year
WW:Week
Cathode bar (unidirectional devices only)
Ordering information
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DocID5616 Rev 11
3 Ordering information
Figure 15: Ordering information scheme
Table 5: Ordering information
Order code(1)
Marking
Package
Weight
Base qty.
Delivery mode
SMBJxxxA/CA-TR(2)
See Table 6: "Marking".
SMB
0.11 g
2500
Tape and reel
Notes:
(1)xx indicates stand-off voltage
(2)Where xxx is nominal value of VBR and A or CA indicates unidirectional or bidirectional version. See Table 3:
"Electrical characteristics parameter values (Tamb = 25 °C, unless otherwise specified)" for list of
available devices and their order codes
SM B 85 CA -
Surface mount
Peak pulse power
B = 600 W Transil in SMB
Stand-off voltage
85 = 85 V
Types
CA = Bidirectional
A = Unidirectional
Delivery mode
TR = Tape and reel
TR
J
SMBJ
Ordering information
DocID5616 Rev 11
9/11
Table 6: Marking
Order code
Marking
Order code
Marking
SMBJ5.0A
BUZ
SMBJ5.0CA
BBZ
SMBJ6.0A
BUA
SMBJ6.0CA
BBA
SMBJ6.5A
BUB
SMBJ6.5CA
BBB
SMBJ8.5A
BUC
SMBJ8.5CA
BBC
SMBJ10A
BUD
SMBJ10CA
BBD
SMBJ12A
BUE
SMBJ12CA
BBE
SMBJ13A
BUF
SMBJ13CA
BBF
SMBJ15A
BUG
SMBJ15CA
BBG
SMBJ16A
CUG
SMBJ16CA
CBG
SMBJ18A
BUH
SMBJ18CA
BBH
SMBJ20A
BUI
SMBJ20CA
BBI
SMBJ22A
BVA
SMBJ22CA
CBH
SMBJ24A
BUJ
SMBJ24CA
BBJ
SMBJ26A
BUK
SMBJ26CA
BBK
SMBJ28A
BUL
SMBJ28CA
BBL
SMBJ30A
BUM
SMBJ30CA
BBM
SMBJ33A
BUN
SMBJ33CA
BBN
SMBJ36A
CUN
SMBJ36CA
CBN
SMBJ40A
CUJ
SMBJ40CA
CBJ
SMBJ43A
CUW
SMBJ43CA
CBW
SMBJ48A
BUW
SMBJ48CA
BBW
SMBJ58A
BUO
SMBJ58CA
BBO
SMBJ70A
CUM
SMBJ70CA
CBM
SMBJ85A
BUQ
SMBJ85CA
BBQ
SMBJ100A
CUQ
SMBJ100CA
CBQ
SMBJ130A
BUS
SMBJ130A
BBS
SMBJ154A
BUT
SMBJ154A
BBT
SMBJ170A
BUU
SMBJ170A
BBU
SMBJ188A
BUV
SMBJ188A
BBV
Revision history
10/11
DocID5616 Rev 11
4 Revision history
Table 7: Document revision history
Date
Revision
Changes
Oct-2001
4
Previous issue.
10-Feb-2005
5
Reformatted to current template. Added directional (uni and bi)
indications to graphics. Added ECOPACK statement.
16-Nov-2006
6
Add part numbers SMBJ36A-TR and SMBJ36CA-TR in Table 3.
14-May-2009
7
Reformatted to current standards. Updated ECOPACK statement.
Added part number SMBJ43CA/A.
17-Sep-2009
8
Document updated for low leakage current.
09-Jul-2010
9
Changed timescale in Figure 9.
20-Oct-2010
10
Updated Figure 13.
24-Jan-2018
11
Updated Table 3: "Electrical characteristics parameter values
(Tamb = 25 °C, unless otherwise specified)".
SMBJ
DocID5616 Rev 11
11/11
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