March 2018
DocID17741 Rev 9
1/13
This is information on a product in full production.
www.st.com
SM6TY
Automotive 600 W Transil™
Datasheet - production data
Features
AEC-Q101 qualified
Peak pulse power:
600 W (10/1000 μs)
4 kW (8/20 μs)
Stand-off voltage range: from 6 V to 70 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
Resin meets UL 94, V0
Complies with the following
standards
ISO 10605, C = 150 pF, R = 330 Ω:
30 kV (air discharge)
30 kV (contact discharge)
ISO 10605, C = 330 pF, R = 330 Ω:
30 kV (air discharge)
30 kV (contact discharge)
ISO 7637-2
Pulse 1: VS = -150 V
Pulse 2a: VS = +112 V
Pulse 3a: VS = -220 V
Pulse3b: VS = +150 V
Description
The SM6TY Transil series has been designed to
protect sensitive automotive circuits against
surges defined in ISO 7637-2 and against
electrostatic discharges according ISO 10605.
The planar technology makes this device
compatible with high-end circuits where low
leakage current and high junction temperature
are required to provide reliability and stability
over time. SM6TY are packaged in SMB (SMB
footprint in accordance with IPC 7531 standard).
Transil™ is a trademark of STMicroelectronics.
Not applicable to parts with stand-off voltage lower than the
average battery voltage (13.5 V).
K
A
Unidirectional Bidirectional
SMB
(JEDEC DO-214AA)
K
A
Characteristics
SM6TY
2/13
DocID17741 Rev 9
1 Characteristics
Table 1: Absolute maximum ratings (Tamb = 25 °C)
Symbol
Parameter
Value
Unit
VPP
Peak pulse voltage
ISO10605 (C = 330 pF, R = 330 Ω):
Contact discharge
Air discharge
ISO10605 / IEC 61000-4-2 (C = 150 pF,
R = 330 Ω)
Contact discharge
Air discharge
30
30
30
30
kV
PPP
Peak pulse power
dissipation
10/1000 µs, Tj initial = Tamb
600
W
Tstg
Storage temperature range
-65 to +150
°C
Tj
Operating junction temperature range
-55 to +150
°C
TL
Maximum lead temperature for soldering during 10 s
260
°C
Figure 1: Electrical characteristics - parameter definitions
Figure 2: Pulse definition for electrical characteristics
SM6TY
Characteristics
DocID17741 Rev 9
3/13
Table 2: 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.
Max.
µA
V
V
mA
V(3)
A(4)
Ω
V
A
Ω
10-
4/°C
SM6T6V8AY/CAY
20
50
5.80
6.45
6.8
7.14
10
10.5
57
0.059
14.4
275
0.027
5.7
SM6T7V5AY/CAY
20
50
6.40
7.13
7.5
7.88
10
11.3
53
0.065
15.2
266
0.027
6.1
SM6T10AY/CAY
20
50
8.55
9.5
10.0
10.5
1
14.5
41
0.098
18.6
215
0.038
7.3
SM6T12AY/CAY
0.2
1
10.2
11.4
12
12.6
1
16.7
36
0.114
21.7
184
0.049
7.8
SM6T15AY/CAY
0.2
1
12.8
14.3
15
15.8
1
21.2
28
0.193
27.2
147
0.078
8.4
SM6T16V5AY/CAY
0.2
1
14.1
15.7
16.5
17.3
1
23.1
26
0.254
29
136
0.092
8.6
SM6T18AY/CAY
0.2
1
15.3
17.1
18
18.9
1
25.2
24
0.263
32.5
123
0.111
8.8
SM6T22AY/CAY
0.2
1
18.8
20.9
22
23.1
1
30.6
20
0.375
39.3
102
0.159
9.2
SM6T24AY/CAY
0.2
1
20.5
22.8
24
25.2
1
33.2
18
0.444
42.8
93
0.189
9.4
SM6T27AY/CAY
0.2
1
23.1
25.7
27
28.4
1
37.5
16
0.569
48.3
83
0.240
9.6
SM6T30AY/CAY
0.2
1
25.6
28.5
30
31.5
1
41.5
14.5
0.690
53.5
75
0.293
9.7
SM6T33AY/CAY
0.2
1
28.2
31.4
33
34.7
1
45.7
13.1
0.840
59.0
68
0.357
9.8
SM6T36AY/CAY
0.2
1
30.8
34.2
36
37.8
1
49.9
12
1.01
64.3
62
0.427
9.9
SM6T39AY/CAY
0.2
1
33.3
37.1
39
41.0
1
53.9
11.1
1.16
69.7
57
0.504
10.0
SM6T42AY/CAY
0.2
1
36
40
42.1
44.2
1
58.1
10.3
1.35
76
52
0.611
10.0
SM6T47AY/CAY
0.2
1
40
44
46.7
49.0
1
64.5
9.7
1.59
84.0
48.0
0.728
10.1
SM6T56AY/CAY
0.2
1
47.6
53.2
56
58.8
1
76.6
7.8
2.28
100
40
1.030
10.0
SM6T68AY/CAY
0.2
1
58.1
64.6
68
71.4
1
92
6.5
3.17
121
33
1.503
10.4
SM6T75AY/CAY
0.2
1
64.1
71.3
75
78.8
1
103
5.8
4.17
134
30
1.84
10.5
SM6T82AY/CAY
0.2
1
70.0
77.8
81.9
86.0
1
113
5.5
4.91
146
27.0
2.22
10.5
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
(4)Surge capability given for both directions for unidirectional and bidirectional types.
Characteristics
SM6TY
4/13
DocID17741 Rev 9
1.1 Characteristics (curves)
Figure 3: Peak power dissipation versus initial
junction temperature (typical values)
Figure 4: Peak pulse power versus exponential
pulse duration
Figure 5: Clamping voltage versus peak pulse current exponential waveform (maximum values)
0
100
200
300
400
500
600
700 10/1000 µs
0 25 50 75 100 125 150 175
Ppp (W)
Tj(°C)
1
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)
0.1
1.0
10.0
100.0
1000.0
1 10 100 1000
IPP(A)
SM6T30A
Y/CA
Y
SM6T82AY/CAY
SM6T6V8AY/CA
Y
T = 25 °C
j initial
8/20 µs
10/1000 µs
V (V)
CL
SM6TY
Characteristics
DocID17741 Rev 9
5/13
Figure 6: ISO 7637-2 pulse 1 response (VS = -150 V)
Figure 7: ISO 7637-2 pulse 2a response (VS = 112 V)
5.0A/div
10 V/div
500 µs/div
500 µs/div
SM6T30CAY
SM6T30AY
SM6T30CAY
SM6T30AY
10A/div
10 V/div
10 µs/div
10 µs/div
SM6T30CAY
SM6T30CAY
SM6T30AY
SM6T30AY
Characteristics
SM6TY
6/13
DocID17741 Rev 9
Figure 8: ISO 7637-2 pulse 3a response (VS = -220 V)
Figure 9: ISO 7637-2 pulse 3b response (VS = 150 V)
ISO7637-2 pulses responses are not applicable for products with a stand-off
voltage lower than the average battery voltage (13.5 V).
1.0A/div
10 V/div
200 ns/div
200 ns/div
SM6T30CAY
SM6T30AY
SM6T30CAY
SM6T30AY
1.0A/div
10 V/div
200 ns/div
200 ns/div
SM6T30CAY
SM6T30AY
SM6T30CAY
SM6T30AY
SM6TY
Characteristics
DocID17741 Rev 9
7/13
Figure 10: Junction capacitance versus reverse
applied voltage for unidirectional types (typical
values)
Figure 11: Junction capacitance versus reverse
applied voltage for bidirectional types (typical
values)
Figure 12: Relative variation of thermal impedance
junction to ambient versus pulse duration
Figure 13: Thermal resistance junction to ambient
versus copper surface under each lead
Figure 14: Leakage current versus junction
temperature (typical values)
Figure 15: Peak forward voltage drop versus peak
forward current (typical values)
C(pF)
10
100
1000
10000
1 10 100 1000
SM6T6V8AY
SM6T30AY
SM6T82AY
F = 1 Mhz
V = 30 mV
T = 25 °C
OSC RMS
j
V (V)
R
100
1000
10000
1 10 100 1000
C(pF)
SM6T6V8CAY
SM6T30CAY
SM6T82CAY
F = 1 Mhz
V = 30 mV
T = 25 °C
OSC RMS
j
V (V)
R
Zth (j-a)/Rth (j-a)
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
Recommended pad layout
Printed circuit board FR4, copper thickness = 35 µm
s
tp
0
20
40
60
80
100
120
140
160
180
200
0 1 2 3 4 5 6 7 8 9 10
Rth(j-a)(°C/W)
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
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
IFM(A)
Tj=25 °C
Tj=125 °C
VFM(V)
Package information
SM6TY
8/13
DocID17741 Rev 9
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
Lead-free package
2.1 SMB package information
Figure 16: SMB package outline
SM6TY
Package information
DocID17741 Rev 9
9/13
Table 3: 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 17: SMB recommended footprint
Figure 18: 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
SM6TY
10/13
DocID17741 Rev 9
3 Ordering information
Figure 19: Ordering information scheme
Table 4: Ordering information
Order code
Marking
Package
Weight
Base qty.
Delivery mode
SM6TxxxAy/CAy(1)
See Table 5: "Marking".
SMB
0.11 g
2500
Tape and reel
Notes:
(1)Where xxx is nominal value of VBR and A or CA indicates unidirectional or bidirectional version. See Table 2:
"Electrical characteristics parameter values (Tamb = 25 °C, unless otherwise specified)" for list of
available devices and their order codes
SM 6 T XX CA
Surface mount
Peak pulse power
6 = 600 W Transil in SMB
Breakdown voltage
30 = 30 V
Types
CA = Bidirectional
A = Unidirectional
Automotive grade
Y
SM6TY
Ordering information
DocID17741 Rev 9
11/13
Table 5: Marking
Order code
Marking
Order code
Marking
SM6T6V8AY
DEY
SM6T6V8CAY
LEY
SM6T7V5AY
DGY
SM6T7V5CAY
LGY
SM6T10AY
DPY
SM6T10CAY
LPY
SM6T12AY
DTY
SM6T12CAY
LTY
SM6T15AY
DXY
SM6T15CAY
LXY
SM6T16V5AY
DZY
SM6T16V5CAY
LZY
SM6T18AY
EEY
SM6T18CAY
MYE
SM6T22AY
EKY
SM6T22CAY
MKY
SM6T24AY
EMY
SM6T24CAY
MMY
SM6T27AY
EPY
SM6T27CAY
MPY
SM6T30AY
ERY
SM6T30CAY
MRY
SM6T33AY
ETY
SM6T33CAY
MTY
SM6T36AY
EVY
SM6T36CAY
MVY
SM6T39AY
EXY
SM6T39CAY
MXY
SM6T42AY
FBY
SM6T42CAY
NAY
SM6T47AY
FAY
SM6T47CAY
NBY
SM6T56AY
FLY
SM6T56CAY
NLY
SM6T68AY
FQY
SM6T68CAY
NQY
SM6T75AY
FSY
SM6T75CAY
NSY
SM6T82AY
FWY
SM6T82CAY
NWY
Revision history
SM6TY
12/13
DocID17741 Rev 9
4 Revision history
Table 6: Document revision history
Date
Revision
Changes
15-Sep-2010
1
Initial release.
18-Oct-2011
2
Deleted old Table 2. Thermal parameter. Updated Table 2 and added
order codes in Table 4. Updated Figure 5, Figure 10 and Figure 11.
Updated Complies with the following standards on page 1.
27-Mar-2012
3
Added footnote on page 1.
26-Sep-2014
4
Updated Table 2 and Table 4. Reformatted to current standard.
19-Nov-2014
5
Updated Figure 7 and Figure 8.
05-Oct-2015
6
Updated Figure 17.
09-Jan-2018
7
Updated Table 2: "Electrical characteristics parameter values (Tamb =
25 °C, unless otherwise specified)".
16-Mar-2018
8
Updated revision numbering.
20-Mar-2018
9
Updated order code SM6T16V5AY/SM6T16V5CAY.
SM6TY
DocID17741 Rev 9
13/13
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