SM6TY
Automotive 600 W Transil™
Features
■
peak pulse power:
– 600 W (10/1000 µs)
– 4 kW (8/20 µs)
stand-off voltage range: from 6.4 V to 58 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
j max
:
– 515 W (10/1000 µs)
JEDEC registered package outline
resin meets UL 94, V0
ECOPACK 2 compliant components
AEC-Q101 qualified
®
A
■
■
■
K
Unidirectional
Bidirectional
SMB
(JEDEC DO-214AA)
■
■
■
■
■
■
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 to
IEC 61000-4-2 and 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).
Complies with the following standards
■
IEC 61000-4-2 level 4:
– 15 kV (air discharge)
– 8 kV (contact discharge)
ISO 10605, C = 330 pF, R = 330
Ω:
– 15 kV (air discharge)
– 8 kV (contact discharge)
ISO 7637-2 (for pulse 1 and 2a, applicable only
to parts with stand-off voltage (V
RM
) lower than
the average battery voltage: 13.5 V):
– Pulse 1: V
S
= -100 V
– Pulse 2a: V
S
= +50 V
– Pulse 3a: V
S
= -150 V
– Pulse 3b: V
S
= +100 V
■
■
TM:
Transil is a trademark of STMicroelectronics
September 2010
Doc ID 17741 Rev 1
1/11
www.st.com
11
Characteristics
SM6TY
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
IEC 61000-4-2
Contact discharge
Air discharge
T
j
initial = T
amb
Value
Unit
V
PP
Peak pulse voltage
30
30
30
30
600
-55 to 150
-65 to 150
260
kV
P
PP
T
j
T
stg
T
L
Peak pulse power dissipation
(1)
Operating junction temperature range
Storage temperature range
W
°C
Maximum lead temperature for soldering during 10 s.
1. For a surge greater than the maximum values, the diode will fail in short-circuit.
Table 2.
Symbol
R
th(j-l)
R
th(j-a)
Thermal resistance
Parameter
Junction to leads
Junction to ambient on printed circuit on recommended pad layout
Value
20
100
Unit
°C/W
°C/W
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
Repetitive pulse current
tr = rise time (µs)
tp = pulse duration time (µs)
tr
tp
2/11
Doc ID 17741 Rev 1
SM6TY
Table 3.
Characteristics
Electrical characteristics, typical values unless otherwise stated (T
amb
= 25 °C)
I
RM
max@V
RM
V
BR
@I
R
min. typ.
V
50
1
1
1
1
1
1
1
1
1
1
1
6.4
V
7.13
7.5
18
22
24
27
30
33
36
39
42.1
mA
10
1
1
1
1
1
1
1
1
1
1
1
(1)
V
CL
@I
PP
10/1000 µs
max.
V
(3)
11.3
25.2
30.6
33.2
37.5
41.5
45.7
49.9
53.9
58.1
64.5
92
A
(4)
53
24
20
18
16
14.5
13.1
12
11.1
10.3
9.7
6.5
R
D (2)
10/1000 µs
V
CL
@I
PP
R
D (2)
8/20 µs 8/20 µs
max.
αT
max.
Order code
25 °C 85 °C
µA
Ω
0.065
0.263
0.375
0.444
0.569
0.690
0.840
1.01
1.16
1.35
1.59
3.17
V
(3)
A
(4)
Ω
0.024
0.111
0.159
0.189
0.240
0.293
0.357
0.427
0.504
0.611
0.728
1.503
10-4/ °C
6.1
8.8
9.2
9.4
9.6
9.7
9.8
9.9
10.0
10.0
10.1
10.4
SM6T7V5AY
SM6T18AY/CAY
SM6T22AY/CAY
SM6T24AY/CAY
SM6T27AY/CAY
SM6T30AY/CAY
SM6T33AY/CAY
SM6T36AY/CAY
SM6T39AY/CAY
SM6T42CAY
SM6T47AY/CAY
SM6T68AY/CAY
20
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
14.5 276
32.5 123
39.3 102
42.8
48.3
53.5
59.0
64.3
69.7
76
84
121
93
83
75
68
62
57
52
48
33
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
36
40
40
44.4 46.7
68
58.1 64.6
1. Pulse test : t
p
< 50 ms
2. To calculate maximum clamping voltage at another surge level, use the following formula:
V
CLmax
= V
CL
- R
D
x (I
PP
- I
PPappli
) where I
PPappli
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.
Figure 3.
Peak power dissipation versus
initial junction temperature
(typical values)
Figure 4.
Peak pulse power versus
exponential pulse duration
P
pp
(W)
700
10/1000 µs
600
500
10.0
100.0
P
PP
(kW)
T
j
initial = 25 °C
400
300
1.0
200
100
T
j
(°C)
0
0
25
50
75
100
125
150
175
0.1
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
t
P
(ms)
Doc ID 17741 Rev 1
3/11
Characteristics
Figure 5.
SM6TY
Clamping voltage versus peak pulse current exponential waveform (maximum values)
I
PP
(A)
T
j initial
= 25 °C
100.0
8/20 µs
10.0
10/1000 µs
10 ms
1.0
SM6T30A
SM6T68A
V
CL
(V)
1000
0.1
10
100
Figure 6.
10
0
-10
-20
-30
-40
-50
ISO 7637-2 pulse 1 response (V
S
= -100 V)
Voltage (V)
SM6T36AY
SM6T36CAY
Current (A)
0
-2
-4
-6
-8
-10
-12
0.0
1.0
2.0
3.0
Time (ms)
4.0
4/11
Doc ID 17741 Rev 1
SM6TY
Figure 7.
ISO 7637-2 pulse 2a response (V
S
= 50 V)
Voltage (V)
50
40
30
20
10
0
Current (A)
SM6T36AY
SM6T36CAY
Note: Curves superimposed
Characteristics
12
10
8
6
4
2
0
Time (µs)
0
20
30
40
50
60
70
80
90
100
Figure 8.
ISO 7637-2 pulse 3a response (V
S
= -150 V)
20 Voltage (V)
10
0
-10
-20
-30
-40
-50
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Time (µs)
1.6
Current (A)
SM6T36AY
SM6T36CAY
Doc ID 17741 Rev 1
5/11
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