SM15TY
Automotive 1500 W Transil™
Datasheet
−
production data
Features
■
Peak pulse power:
– 1500 W (10/1000 µs)
– 10 kW (8/20 µs)
Stand-off voltage range: from 5.8 V to 70 V
Unidirectional and bidirectional types
Low leakage current:
– 0.2 µA at 25 °C
– 1 µA at 85 °C
Operating T
j max
: 150 °C
High power capability at T
jmax
:
– 1250 W (10/1000 µs)
JEDEC registered package outline
Resin meets UL 94, V0
AEC-Q101 qualified
K
A
■
■
■
Unidirectional
Bidirectional
SMC
(JEDEC DO-214AB)
■
■
Description
The SM15TY Transil series has been designed to
protect sensitive automotive circuits against
surges defined in ISO 7637-2 and against
electrostatic discharges according to ISO 10605.
The Planar technology makes it compatible with
high-end circuits where low leakage current and
high junction temperature are required to provide
reliability and stability over time. SM15TY are
packaged in SMC (SMC footprint in accordance
with IPC 7531 standard).
■
■
■
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
(a)
– Pulse 1: V
S
= -100 V
– Pulse 2a: V
S
= +50 V
– Pulse 3a: V
S
= -150 V
– Pulse 3b: V
S
= +100 V
■
■
a. Not applicable to parts with stand-off voltage lower
than the average battery voltage (13.5 V)
TM:
Transil is a trademark of STMicroelectronics
March 2012
This is information on a product in full production.
Doc ID 17865 Rev 3
1/12
www.st.com
12
Characteristics
SM15TY
1
Table 1.
Symbol
Characteristics
Absolute maximum ratings (T
amb
= 25
°C
)
Parameter
ISO 10605 (C = 330 pF, R = 330
Ω):
Contact discharge
Air discharge
ISO 10605 (C = 150 pF, R = 330
Ω):
Contact discharge
Air discharge
T
j initial
= T
amb
Value
Unit
V
PP
Peak pulse voltage
30
30
30
30
1500
-65 to + 150
-40 to + 150
260
kV
P
PP
T
stg
T
j
T
L
Peak pulse power dissipation
(1)
Storage temperature range
Operating junction temperature range
Maximum lead temperature for soldering during 10 s.
W
°C
°C
°C
1. For a surge greater than the maximum values, the diode will fail in short-circuit.
Figure 1.
Electrical characteristics - definitions
I
I
I
PP
Symbol
V
RM
V
BR
V
CL
I
RM
I
PP
α
T
V
F
R
D
Parameter
Stand-off voltage
Breakdown voltage
Clamping voltage
Leakage current @ V
RM
Peak pulse current
Voltage temperature coefficient
Forward voltage drop
Dynamic resistance
Unidirectional
I
F
V
CL
V
BR
V
RM
I
RM
I
R
V
F
V
V
CL
V
BR
V
RM
I
R
I
RM
I
RM
I
R
V
V
RM
V
BR
V
CL
I
PP
I
PP
Bidirectional
Figure 2.
Pulse definition for electrical characteristics
%I
PP
100
50
Pulse waveform
tr = rise time (µs)
tp = pulse duration time (µs)
0
tr
tp
t
2/12
Doc ID 17865 Rev 3
SM15TY
Table 2.
Characteristics
Electrical characteristics, typical values unless otherwise stated (T
amb
= 25 °C)
I
RM
max@V
RM
V
BR
@I
R (1)
R
D
V
CL
@I
PP
V
CL
@I
PP
10/1000
10/1000 µs
8/20 µs
µs
max
mA
7.14
7.88
10.5
12.6
15.8
18.9
23.1
25.2
28.4
31.5
34.7
37.8
41.0
49.4
58.9
71.4
78.8
86.0
10
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
V
(3)
10.5
11.3
14.5
16.7
21.2
A
(4)
143
132
103
90
71
Ω
0.023
0.026
0.039
0.046
0.076
0.106
0.153
0.178
0.228
0.278
0.333
0.403
0.461
0.653
0.925
1.26
1.66
1.94
max
V
(3)
A
(4)
Ω
R
D
8/20
µs
αT
(2)
Order code
25 °C 85 °C
µA
V
5.8
6.4
8.55
min typ max
V
6.45 6.8
7.13 7.5
9.5
10
12
15
18
22
24
27
30
33
36
39
47
56
68
75
82
max
10-4/
°C
5.7
6.1
7.3
7.8
8.4
8.8
9.2
9.4
9.6
9.7
9.8
9.9
10
10.1
10.3
10.4
10.5
10.5
SM15T6V8AY/CAY
SM15T7V5AY/CAY
SM15T10AY/CAY
SM15T12AY/CAY
SM15T15AY/CAY
SM15T18AY/CAY
SM15T22AY/CAY
SM15T24AY/CAY
SM15T27AY/CAY
SM15T30AY/CAY
SM15T33AY/CAY
SM15T36AY/CAY
SM15T39AY/CAY
SM15T47AY/CAY
SM15T56AY/CAY
SM15T68AY/CAY
SM15T75AY/CAY
SM15T82AY/CAY
500
250
10
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2000
1000
50
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
13.4 746 0.008
14.5 690
0.01
18.6 538 0.015
21.7 461
0.02
10.2 11.4
12.8 14.3
15.3 17.1
18.8 20.9
20.5 22.8
23.1 25.7
25.6 28.5
28.2 31.4
30.8 34.2
33.3 37.1
40.2 44.7
48
53.3
27.2 368 0.031
32.5 308 0.044
39.3 254 0.064
42.8 234 0.075
48.3 207 0.096
53.5 187
59
169
0.12
0.14
0.17
0.2
25.2 59.5
30.6
33.2
37.5
41.5
45.7
49.9
53.9
49
45
40
36
33
30
28
64.3 156
69.7 143
84
100
121
134
146
64.5 23.2
77.4
92
103
113
20
16.3
14.6
13.9
119 0.291
100 0.411
83
75
69
0.6
0.74
0.87
58.1 64.6
64.1 71.3
70
77.8
1. Pulse test: t
p
< 50 ms
2. To calculate maximum clamping voltage at other surge level, use the following formula: V
CL
max = V
CL
- R
D
x (I
PP
- I
PPappli
)
where IPP
appli
is the surge current in the application
3. To calculate V
BR
or V
CL
versus junction temperature, use the following formulas:
V
BR
@ T
J
= V
BR
@ 25 °C x (1 +
αT
x (T
J
- 25))
V
CL
@ T
J
= V
CL
@ 25 °C x (1 +
αT
x (T
J
- 25))
4. Surge capability given for both directions for unidirectional and bidirectional types.
Doc ID 17865 Rev 3
3/12
Characteristics
SM15TY
Figure 3.
Peak pulse power dissipation
versus initial junction temperature
(typical values)
10/1000 µs
Figure 4.
Peak pulse power versus
exponential pulse duration
(T
j
initial = 25 °C)
2000
P
PP
(W)
100.0
P
PP
(kW)
1500
10.0
1000
1.0
500
0
0
25
50
75
100
125
150
T
j
(°C)
175
0.1
1.0E-03
tp (ms)
1.0E-02
1.0E-01
1.0E+00
1.0E+01
Figure 5.
Clamping voltage versus peak
pulse current (exponential
waveform, maximum values)
Figure 6.
Junction capacitance versus
reverse applied voltage for
unidirectional types (typical values)
1000.0
I
PP
(A)
T
j initial
= 25 °C
10000
C(pF)
F = 1 MHz
V
OSC
= 30 mV
RMS
T
j
= 25 °C
SM15T6V8AY
100.0
8/20 µs
10/1000 µs
10.0
SM15T6V8AY/CAY
SM15T82AY/CAY
SM15T30AY/CAY
1000
SM15T30AY
1.0
SM15T82AY
0.1
1
V
CL
(V)
100
1000
100
1
10
100
V
R
(V)
1000
10
Figure 7.
Junction capacitance versus
reverse applied voltage for
bidirectional types (typical values)
Figure 8.
Thermal resistance junction to
ambient versus copper surface
under each lead
10000
C(pF)
SM15T6V8CAY
F = 1 MHz
V
OSC
= 30 mV
RMS
T
j
= 25 °C
100
90
80
70
60
R
th(j-a)
(°C/W)
Printed circuit board FR4,
copper thickness = 35 µm
1000
SM15T30CAY
50
40
SM15T82CAY
30
20
10
100
1
10
100
V
R
(V)
1000
0
0.0
S
Cu
(cm²)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
4/12
Doc ID 17865 Rev 3
SM15TY
Characteristics
Figure 9.
Leakage current versus junction
temperature (typical values)
Figure 10. Peak forward voltage drop versus
peak forward current
(typical values)
100.0
1.E+04
I
R
(nA)
V
R
= V
RM
V
RM
< 10 V
I
FM
(A)
1.E+03
10.0
1.E+02
T
j
= 125 °C
T
j
= 25 °C
1.0
1.E+01
V
RM
≥
10 V
1.E+00
25
50
75
100
125
T
j
(°C)
150
0.1
0.0
V
FM
(V)
0.5
1.0
1.5
2.0
2.5
Figure 11. Relative variation of thermal impedance junction to ambient versus pulse duration
1.00
Z
th(j-a)
/R
th(j-a)
Recommended pad layout
printed circuit board,
copper thickness = 35 µm
0.10
Single pulse
0.01
1.E-03
t
p
(s)
1.E-02
1.E-01
1.E+00
1.E+01
1.E+02
1.E+03
Doc ID 17865 Rev 3
5/12
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