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SM4T6V7AY, SM4T6V7CAY, SM4T7V6AY, SM4T7V6CAY,
SM4T10AY, SM4T10CAY, SM4T12AY, SM4T12CAY, SM4T14AY, SM4T14CAY, SM4T15AY, SM4T15CAY, SM4T18AY, SM4T18CAY, SM4T21AY, SM4T21CAY, SM4T23AY, SM4T23CAY, SM4T26AY, SM4T26CAY, SM4T28AY, SM4T28CAY, SM4T30AY, SM4T30CAY, SM4T33AY, SM4T33CAY, SM4T35AY, SM4T35CAY, SM4T39AY, SM4T39CAY, SM4T47AY, SM4T47CAY, SM4T50AY, SM4T50CAY, SM4T56AY, SM4T56CAY, SM4T68AY, SM4T68CAY, SM4T82AY, SM4T82CAY
SM4TxxAY, SM4TxxCAY
Datasheet
Automotive 400 W TVS in SMA
Features
• AEC-Q101 qualified • Peak pulse power:
– 400 W (10/1000 μs) – 2.3 kW (8/20 μs) • Stand-off voltage range from 5 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 • JEDEC registered package outline • Resin meets UL94, 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 (not applicable to parts with VRM lower than battery voltage 13.5 V): – Pulse 1: VS = -150 V – Pulse 2a: VS = +112 V – Pulse 3a: VS = -200 V – Pulse3b: VS = +150 V
Description
The SM4TY series are 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 long term reliability and stability. SM4TY devices are packaged in SMA (SMA footprint in accordance with IPC 7531 standard).
DS6927 - Rev 5 - January 2022 For further information contact your local STMicroelectronics sales office.
www.st.com
SM4TxxAY, SM4TxxCAY
Characteristics
1
Characteristics
Table 1. Absolute maximum ratings (Tamb = 25 °C)
Symbol
VPP
PPP Tstg Tj TL
Parameter
Peak pulse voltage Peak pulse power dissipation
IEC 61000-4-2 (C = 150 pF, R = 330 Ω) Contact discharge Air discharge ISO10605 (C = 330 pF, R = 330 Ω) Contact discharge Air discharge Tj initial = Tamb
Storage temperature range
Operating junction temperature range
Maximum lead temperature for soldering during 10 s
Value
Unit
30 30
kV
30 30
400
W
-65 to +150 °C
-55 to +150 °C
260
°C
Figure 1. Electrical characteristics - parameter definitions
Figure 2. Pulse definition for electrical characteristics
DS6927 - Rev 5
page 2/14
SM4TxxAY, SM4TxxCAY
Characteristics
Table 2. Electrical characteristics - parameter values (Tamb = 25 °C, unless otherwise specified)
Type
IRM max at VRM
VBR at IR (1)
25 °C 85°C
Min. Typ. Max.
10 / 1000 µs
8 / 20µs
VCL(2)(3) IPP(4) RD VCL(2)(3) IPP(4) RD
Max.
Max. Max.
Max.
αT Max.
µA µA V V V V mA V
A
Ω
V
A
Ω 10-4/°C
SM4T6V7AY/CAY 20 50 5 6.4 6.74 7.1 10 9.2 43.5 0.049 13.4 174 0.036 5.7
SM4T7V6AY/CAY 20 50 6.5 7.2 7.58 8 10 11.2 35.7 0.091 14.5 160 0.041 6.1
SM4T10AY/CAY 20 50 8.5 9.4 9.9 10.4 1 14.4 27.7 0.145 19.5 124 0.073 7.3
SM4T12AY/CAY 0.2 1 10 11.1 11.7 12.3 1
17 23.5 0.201 21.7 106 0.089 7.8
SM4T14AY/CAY 0.2 1 12 13.3 14 14.7 1 19.9 20.1 0.259 25.3 91 0.116 8.3
SM4T15AY/CAY 0.2 1 13 14.4 15.2 16 1 21.5 18.6 0.298 27.2 85 0.132 8.4
SM4T18AY/CAY 0.2 1 15 16.7 17.6 18.5 1 24.4 16.4 0.361 32.5 71 0.197 8.8
SM4T21AY/CAY 0.2 1 18 20.0 21.1 22.2 1 29.2 13.7 0.514 39.3 59 0.291 9.2
SM4T23AY/CAY 0.2 1 20 22.2 23.4 24.6 1 32.4 12.3 0.637 42.8 54 0.338 9.4
SM4T26AY/CAY 0.2 1 22 24.4 25.7 27 1 35.5 11.2 0.760 48.3 48 0.444 9.6
SM4T28AY/CAY 0.2 1 24 26.7 28.1 29.5 1 38.9 10.3 0.912 50
46 0.446 9.6
SM4T30AY/CAY 0.2 1 26 28.9 30.4 31.9 1 42.1 9.5 1.07 53.5 43 0.502 9.7
SM4T33AY/CAY 0.2 1 28 31.1 32.7 34.3 1 45.4 8.8 1.26 59
39 0.632 9.8
SM4T35AY/CAY 0.2 1 30 33.3 35.1 36.9 1 48.4 8.3 1.39 64.3 36 0.762 9.9
SM4T39AY/CAY 0.2 1 33 36.7 38.6 40.5 1 53.3 7.5 1.70 69.7 33 0.884 10
SM4T47AY/CAY 0.2 1 40 44.4 46.7 49 1 64.5 6.2 2.49 84
27 1.30 10.1
SM4T50AY/CAY 0.2 1 43 47.8 50.3 52.8 1 69.4 5.7 2.91 91
25 1.53 10.2
SM4T56AY/CAY 0.2 1 48 53.3 56.1 58.9 1 77.4 5.2 3.56 100 23 1.79 10.3
SM4T68AY/CAY 0.2 1 58 64.4 67.8 71.2 1 93.6 4.3 5.21 121 19 2.62 10.4
SM4T82AY/CAY 0.2
1 70 77.8 81.9 86 1
113
3.5 7.72 146
16 3.75 10.5
1. To calculate VBR versus Tj : VBR at Tj = VBR at 25 °C x (1 + αT x (Tj - 25)) 2. To calculate VCL versus Tj : VCL at Tj = VCL at 25 °C x (1 + αT x (Tj - 25)) 3. To calculate VCL max versus IPPappli: VCLmax = VCL - RD x (IPP - IPPappli) where IPP appli is the surge current in the
application
4. Surge capability given for both directions for unidirectional and bidirectional devices
DS6927 - Rev 5
page 3/14
1.1
Characteristics (curves)
SM4TxxAY, SM4TxxCAY
Characteristics (curves)
Figure 3. Maximum peak power dissipation versus initial junction temperature
PPP (W)
500
10/1000 µs
Figure 4. Maximum peak pulse power versus exponential pulse duratio.