Features
• AEC-Q101 qualified
• Peak pulse power: 600 W (10/1000 μs) and 4 kW (8/20 μs)
• Flat and thin package: 1 mm
• Stand-off voltage range from 5 V to 188 V
• Unidirectional type
• Low leakage current: 0.2 μA at 25 °C and 1 μA at 85 °C
• Operating Tj max: 175 °C
• High power capability at Tj max.: up to 400 W (10/1000 µs)
• Lead finishing: matte tin plating
Complies with the following standards
• UL94, V0
• J-STD-020 MSL level 1
• J-STD-002, JESD 22-B102 E3 and MIL-STD-750, method 2026
• JESD-201 class 2 whisker test
• IPC7531 footprint and JEDEC registered package outline
• IEC 61000-4-4 level 4:
– 4 kV
• ISO10605, IEC 61000-4-2, C = 150 pF - R = 330 Ω exceeds level 4:
– 30 kV (contact discharge)
– 30 kV (air discharge)
• ISO10605, C = 330 pF, R = 330 Ω exceeds level 4:
– 30 kV (contact discharge)
– 30 kV (air discharge)
• ISO7637-2 (Not applicable to parts with VRM lower than battery voltage)
– Pulse 1: VS = -150 V
– Pulse 2a: VS = +112 V
– Pulse 3a: VS = -220 V
– Pulse 3b: VS = +150 V
Description
The SMA6FY Transil series are designed to protect sensitive automotive circuits
against surges defined in ISO 7637 series 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 long term reliability and
stability.
Product status link
SMA6FY
SMA6F5.0AY, SMA6F6.0AY,
SMA6F6.5AY, SMA6F8.5AY,
SMA6F10AY, SMA6F11AY,
SMA6F12AY, SMA6F13AY,
SMA6F14AY, SMA6F15AY,
SMA6F16AY, SMA6F18AY,
SMA6F20AY, SMA6F22AY,
SMA6F23AY, SMA6F24AY,
SMA6F26AY, SMA6F28AY,
SMA6F30AY, SMA6F31AY,
SMA6F33AY, SMA6F36AY,
SMA6F40AY, SMA6F48AY,
SMA6F58AY, SMA6F64AY,
SMA6F70AY, SMA6F85AY,
SMA6F100AY, SMA6F130AY,
SMA6F154AY, SMA6F170AY,
SMA6F188AY
Automotive 600 W TVS in SMA Flat
SMA6FxxAY
Datasheet
DS12477 - Rev 3 - January 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
1Characteristics
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
30
30
kV
ISO10605 / IEC 61000-4-2 (C = 150 pF, R = 330 Ω)
Contact discharge
Air discharge
30
30
PPP Peak pulse power dissipation 10/1000 µs, Tj initial = Tamb 600 W
Tstg Storage temperature range -65 to +175 °C
TjOperating junction temperature range -55 to +175 °C
TLMaximum lead temperature for soldering during 10 s 260 °C
Figure 1. Electrical characteristics - parameter definitions
Figure 2. Pulse definition for electrical characteristics
SMA6FxxAY
Characteristics
DS12477 - Rev 3 page 2/15
Table 2. Electrical characteristics - parameter values (Tamb = 25 °C, unless otherwise specified)
Type
IRM max at VRM VBR at IR (1)
10 / 1000 µs 8 / 20 µs αT
VCL(2)(3) IPP(4) RDVCL(2)(3) IPP(4) RD
25 °C 85 °C Min. Typ. Max. Max. Max. Max. Max. Max.
µA V V mA V A Ω V A Ω 10-4/°C
SMA6F5.0AY 20 50 5.0 6.4 6.74 7.1 10 9.2 68 0.031 13.4 298 0.021 5.7
SMA6F6.0AY 20 50 6.0 6.7 7.05 7.4 10 10.3 61 0.048 13.7 290 0.022 5.9
SMA6F6.5AY 20 50 6.5 7.2 7.58 8 10 11.2 56 0.057 14.5 276 0.024 6.1
SMA6F8.5AY 20 50 8.5 9.4 9.9 10.4 1 14.4 41.7 0.096 19.5 205 0.044 7.3
SMA6F10AY 0.2 1 10 11.1 11.7 12.3 1 17 37 0.127 21.7 184 0.051 7.8
SMA6F11AY 0.2 1 11 12.3 13 13.7 1 18 33.8 0.127 24.2 165 0.064 8.1
SMA6F12AY 0.2 1 12 13.3 14 14.7 1 19.9 31 0.168 25.3 157 0.068 8.3
SMA6F13AY 0.2 1 13 14.4 15.2 16 1 21.5 29 0.190 27.2 147 0.076 8.4
SMA6F14AY 0.2 1 14 15.7 16.5 17.3 1 23.1 26 0.223 29 136 0.086 8.6
SMA6F15AY 0.2 1 15 16.7 17.6 18.5 1 24.4 25.1 0.235 32.5 123 0.114 8.8
SMA6F16AY 0.2 1 16 17.9 18.8 19.8 1 26 23.1 0.268 34.7 115 0.130 9.0
SMA6F18AY 0.2 1 18 20 21.1 22.2 1 29.2 21.5 0.326 39.3 102 0.168 9.2
SMA6F20AY 0.2 1 20 22.2 23.4 24.6 1 32.4 19.4 0.402 42.8 93 0.196 9.4
SMA6F22AY 0.2 1 22 24.4 25.7 27 1 35.5 17.7 0.480 48.3 83 0.257 9.6
SMA6F23AY 0.2 1 23 25.7 27 28.4 1 37.8 16.4 0.573 49.2 81 0.257 9.6
SMA6F24AY 0.2 1 24 26.7 28.1 29.5 1 38.9 16 0.588 50 80 0.256 9.6
SMA6F26AY 0.2 1 26 28.9 30.4 31.9 1 42.1 14.9 0.685 53.5 75 0.288 9.7
SMA6F28AY 0.2 1 28 31.1 32.7 34.3 1 45.4 13.8 0.804 59 68 0.363 9.8
SMA6F30AY 0.2 1 30 33.2 35 36.8 1 48.4 13 0.885 64.3 62 0.442 9.9
SMA6F31AY 0.2 1 31 34.2 36 37.8 1 50.2 12.3 1.01 65 61 0.45 9.9
SMA6F33AY 0.2 1 33 36.7 38.6 40.5 1 53.3 11.8 1.08 69.7 57 0.512 10
SMA6F36AY 0.2 1 36 40 42.1 44.2 1 58.1 10.3 1.35 76 52 0.612 10
SMA6F40AY 0.2 1 40 44.4 46.7 49 1 64.5 9.7 1.60 84 48 0.729 10.1
SMA6F48AY 0.2 1 48 53.2 56 58.8 1 77.4 8.1 2.28 100 40 1.03 10.3
SMA6F58AY 0.2 1 58 64.6 68 71.4 1 93.6 6.7 3.34 121 33 1.51 10.4
SMA6F64AY 0.2 1 64 71.1 74.8 78.6 1 103 5.8 4.17 134 30 1.84 10.5
SMA6F70AY 0.2 1 70 77.9 82 86.1 1 113 5.5 4.91 146 27 2.22 10.5
SMA6F85AY 0.2 1 85 95 100 105 1 137 4.6 7.17 178 22.5 3.29 10.6
SMA6F100AY 0.2 1 100 111 117 123 1 162 3.8 10.3 212 19 4.68 10.7
SMA6F130AY 0.2 1 130 144 152 160 1 209 3 16.3 265 15 7 10.8
SMA6F154AY 0.2 1 154 171 180 189 1 246 2.4 23.8 317 12.6 10.2 10.8
SMA6F170AY 0.2 1 170 190 200 210 1 275 2.2 30 353 11.3 12.7 10.8
SMA6F188AY 0.2 1 188 209 220 231 1 328 2 48.5 388 10.3 15.2 10.8
1. To calculate VBR versus Tj: VBR at TJ = VBR at 25 °C x (1 + αT x (Tj - 25))
2. To calculate VCLmax versus IPPappli: VCLmax = VBR max + RD x IPPappli
3. To calculate VCL versus Tj: VCL at TJ = VCL at 25 °C x (1 + αT x (Tj - 25))
SMA6FxxAY
Characteristics
DS12477 - Rev 3 page 3/15
4. Surge capability given for both directions
1.1 Characteristics (curves)
Figure 3. Maximum peak power dissipation versus initial
junction temperature
0
200
400
600
800
0 25 50 75 100 125 150 175 200
Ppp (W)
Tj (°C)
VRM < 100 V
VRM ≥ 100 V
Figure 4. Maximum peak pulse power versus exponential
pulse duration
10
100
1000
10000
0.01 0.1 1 10
PPP (W)
tp (ms)
Tj initial = 25 °C
Figure 5. Maximum clamping voltage versus peak pulse
current
0.1
1
10
100
1000
1 10 100 1000
Ipp (A)
VCL
(V)
8/20 µs
10/1000 µs
SMA6F5.0AY
SMA6F33AY
SMA6F70AY
SMA6F188AY
Figure 6. Dynamic resistance versus pulse duration
0.001
0.01
0.1
1
10
100
1000
0.01 0.1 1 10
RD(Ω)
tp (ms)
SMA6F5.0AY
SMA6F33AY
SMA6F70AY
SMA6F188AY
SMA6FxxAY
Characteristics (curves)
DS12477 - Rev 3 page 4/15
Figure 7. Junction capacitance versus reverse applied
voltage (unidirectional types)
0.01
0.1
1
10
1 10 100 1000
C(nF)
VR (V)
SMA6F5.0AY
SMA6F33AY
SMA6F70AY
SMA6F188AY
f = 1 MHz
Vosc = 30 mVRMS
Tj = 25 °C
Figure 8. Leakage current versus junction temperature
1
10
100
1000
10000
25 50 75 100 125 150 175
IR(nA)
Tj (°C)
VR=VRM
VRM < 10V
VRM ≥ 10V
Figure 9. Peak forward voltage drop versus peak forward
current
0
1
10
100
0 0.5 1 1.5 2 2.5 3
IF(A)
VF (V)
single pulse
Tj = 25 °C
Tj = 175 °C
Figure 10. Thermal impedance junction to ambient versus
pulse duration
1
10
100
1000
0.01 0.1 1 10 100 1000
Zth(j-a) (°C/W)
tp (s)
Single pulse on recommended footprint.
Epoxy printed circuit board FR4, 70 µm Cu thickness
Figure 11. Thermal resistance junction to ambient versus
copper area under each lead
0
20
40
60
80
100
120
140
160
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Rth(j-a) (°C/W)
SCu (cm²)
Single pulse on recommended footprint.
Epoxy printed circuit board FR4, 70 µm Cu thickness
Figure 12. ISO7637-2 pulse 1: Vs = -150 V with 12 V
battery
SMA6FxxAY
Characteristics (curves)
DS12477 - Rev 3 page 5/15
Figure 13. ISO7637-2 pulse 2a: Vs = +112 V with 12 V
battery
Figure 14. ISO7637-2 pulse 3a: Vs = -220 V with 12 V
battery
Figure 15. ISO7637-2 pulse 3b: Vs = +150 V with 12 V battery
SMA6FxxAY
Characteristics (curves)
DS12477 - Rev 3 page 6/15
2Package 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.
2.1 SMA Flat package information
Figure 16. SMA Flat package outline
Table 3. SMA Flat mechanical data
Symbol
Millimeters Inches(1)
Min Typ Max Min Typ Max
A 0.90 1.10 0.035 0.044
A1 0.05 0.002
b 1.25 1.65 0.049 0.065
c 0.15 0.40 0.005 0.016
D 2.25 2.90 0.088 0.115
E 5.00 5.35 0.196 0.211
E1 3.95 4.60 0.155 0.182
G 2.00 0.079
G1 0.85 0.033
L 0.75 1.20 0.029 0.048
L1 0.45 0.018
L2 0.45 0.018
L3 0.05 0.002
V 8° 8°
V1 8° 8°
1. Values in inches are converted from mm and rounded to 3 decimal digits.
SMA6FxxAY
Package information
DS12477 - Rev 3 page 7/15
Figure 17. SMA Flat recommended footprint in mm
(inches) Figure 18. SMA Flat marking
Figure 19. Package orientation in reel Figure 20. Tape and reel orientation
Figure 21. 13'' reel dimension values Figure 22. Inner box dimension values
SMA6FxxAY
SMA Flat package information
DS12477 - Rev 3 page 8/15
Figure 23. Tape outline
Table 4. Tape dimension values
Ref.
Dimensions
Millimeters
Min. Typ. Max.
D0 1.5 1.55 1.6
D1 1.5
F 5.4 5.5 5.6
K0 1.1 1.2 1.3
P0 3.9 4.0 4.1
P1 3.9 4.0 4.1
P2 1.9 2.0 2.1
W 11.7 12 12.3
SMA6FxxAY
SMA Flat package information
DS12477 - Rev 3 page 9/15
2.2 Reflow profile
Figure 24. ST ECOPACK recommended soldering reflow profile for PCB mounting
250
0
50
100
150
200
240210180150120906030 300270
-6 °C/s
240-245 °C
2 - 3 °C/s
Temperature (°C) -2 °C/s
-3 °C/s
Time (s)
0.9 °C/s
60 sec
(90 max)
Note: Minimize air convection currents in the reflow oven to avoid component movement. Maximum soldering profile
corresponds to the latest IPC/JEDEC J-STD-020.
SMA6FxxAY
Reflow profile
DS12477 - Rev 3 page 10/15
3Application and design guidelines
More information is available in the application note AN2689 “Protection of automotive electronics from electrical
hazards, guidelines for design and component selection”.
SMA6FxxAY
Application and design guidelines
DS12477 - Rev 3 page 11/15
4Ordering information
Figure 25. Ordering information scheme
SMA 6 F vv A Y
Package:
SMA
Power capability (10 / 1000 µs):
600 W
Flat package
Stand-off voltage:
VRM
Type:
A : unidirectional
Automotive grade
Table 5. Ordering information
Order code Marking Package Weight Base qty. Delivery mode
SMA6FxxxAY See Table 6. Marking. SMA Flat 39 mg 10000 Tape and reel
SMA6FxxAY
Ordering information
DS12477 - Rev 3 page 12/15
4.1 Marking
Table 6. Marking
Order code Marking
SMA6F5.0AY 6AIY
SMA6F6.0AY 6AKY
SMA6F6.5AY 6ALY
SMA6F8.5AY 6APY
SMA6F10AY 6ASY
SMA6F11AY 6AUY
SMA6F12AY 6AWY
SMA6F13AY 6AYY
SMA6F14AY 6BAY
SMA6F15AY 6BCY
SMA6F16AY 6BEY
SMA6F18AY 6BIY
SMA6F20AY 6BMY
SMA6F22AY 6BOY
SMA6F23AY 6BPY
SMA6F24AY 6BQY
SMA6F26AY 6BSY
SMA6F28AY 6BUY
SMA6F30AY 6BWY
SMA6F31AY 6BXY
SMA6F33AY 6BZY
SMA6F36AY 6CCY
SMA6F40AY 6CGY
SMA6F48AY 6COY
SMA6F58AY 6CYY
SMA6F64AY 6DEY
SMA6F70AY 6DKY
SMA6F85AY 6DZY
SMA6F100AY 6EOY
SMA6F130AY 6FSY
SMA6F154AY 6GQY
SMA6F170AY 6HGY
SMA6F188AY 6HYY
SMA6FxxAY
Marking
DS12477 - Rev 3 page 13/15
Revision history
Table 7. Document revision history
Date Version Changes
24-Sep-2018 1 Initial release.
26-Aug-2019 2
Updated Table 1. Absolute maximum ratings (Tamb = 25 °C),
Figure 10. Thermal impedance junction to ambient versus pulse duration,
Figure 11. Thermal resistance junction to ambient versus copper area under
each lead.
07-Jan-2020 3 Updated links syntax.
SMA6FxxAY
DS12477 - Rev 3 page 14/15
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SMA6FxxAY
DS12477 - Rev 3 page 15/15
