SM4TY Automotive 400 W Transil™ Datasheet - production data Complies with the following standards • ISO 10605, C = 150 pF, R = 330 Ω: A – 30 kV (air discharge) – 30 kV (contact discharge) • ISO 10605, C = 330 pF, R = 330 Ω: K – 30 kV (air discharge) Unidirectional Bidirectional – 30 kV (contact discharge) • ISO 7637-2(a) SMA (JEDEC DO-214AC) – pulse 1: VS = -100 V – pulse 2a: V = +50 V S – pulse 3a: V = -150 V S – pulse 3b: V = +100 V S Features Description • Peak pulse power: The SM4TY Transil series has been designed to – 400 W (10/1000 µs) protect sensitive automotive circuits against – 2.3 kW (8/20 µs) surges defined in ISO 7637-2 and against electrostatic discharges according to ISO 10605. • Stand-off voltage range: from 5 V to 70 V • Unidirectional and bidirectional types The planar technology makes it compatible with high-end circuits where low leakage current and • Low leakage current: high junction temperature are required to provide – 0.2 µA at 25 °C reliability and stability over time. SM4TY devices – 1 µA at 85 °C are packaged in SMA (SMA footprint in • Operating T : 150 °C accordance with IPC 7531 standard). j max • High power capability at T : jmax – 270 W (10/1000 µs) • JEDEC registered package outline • Resin meets UL 94, V0 • AEC-Q101 qualified TM: Transil is a trademark of STMicroelectronics a. Not applicable to parts with stand-off voltage lower than the average battery voltage (13.5 V) October 2015 DocID17862 Rev 4 1/12 This is information on a product in full production. www.st.com

Characteristics SM4TY 1 Characteristics Table 1. Absolute maximum ratings (T = 25 °C) amb Symbol Parameter Value Unit ISO 10605 (C = 150 pF, R = 330 Ω) Contact discharge 30 Air discharge 30 V Peak pulse voltage kV PP ISO 10605, C = 330 pF, R = 330 Ω: Contact discharge 30 Air discharge 30 Peak pulse power dissipation(1) T = T 400 W PPP jinitial amb T Storage temperature range -65 to + 150 °C stg T Operating junction temperature range -55 to + 150 °C j T Maximum lead temperature for soldering during 10 s. 260 °C L 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Figure 1. Electrical characteristics - definitions II II Symbol Parameter VRM Stand-off voltage Unidirectional IIFF IIPPPP VBR Breakdown voltage VCL Clamping voltage II IRM Leakage current @VRM VVCCLLVVBBRRVVRRMM VVFF VV VVCCLLVVBBRRVVRRMM IIRRRRMM VV IαPTP PVoelatakg peu tlseem cpuerrraetnutre coefficient IIRIRIRRMM IIRRIIRRMM VVRRMMVVBBRRVVCCLL VF Forward voltage drop RD Dynamic resistance IIPPPP IIPPPP Bidirectional Figure 2. Pulse definition for electrical characteristics %IPP 100 Pulse waveform 50 tr = rise time (µs) tp = pulse duration time (µs) 0 t tr tp 2/12 DocID17862 Rev 4

SM4TY Characteristics Table 2 . Electrical characteristics, typical values if not otherwise stated (T = 25 °C) amb R R V @ I D V @ I D I max @ V V @ I (1) CL PP 10/1000 CL PP 8/20 αT (2) RM RM BR R 10/1000 µs 8/20µs µs µs Order code 25 °C 85 °C min. typ. max. max. max. max 10-4/ µA V V mA V(3) A(4) Ω V(3) A(4) Ω °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 8.0 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 17.0 23.5 0.201 21.7 106 0.089 7.8 SM4T14AY/CAY 0.2 1 12 13.3 14.0 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 16.0 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 27.0 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 49.0 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 86.0 1 113 3.5 7.72 146 16 3.75 10.5 1. Pulse test: t < 50 ms p 2. To calculate maximum clamping voltage at other surge level, use the following formula: V max = V - R x (I - I ) CL CL D PP PPappli where I is the surge current in the application PPappli 3. To calculate V or V versus junction temperature, use the following formulas: BR CL V @ T = V @ 25 °C x (1 + αT x (T - 25)) BR J BR J V @ T = V @ 25 °C x (1 + αT x (T - 25)) CL J CL J 4. Surge capability given for both directions for unidirectional and bidirectional types. DocID17862 Rev 4 3/12 12

Characteristics SM4TY Figure 3. Pe ak pulse power dissipation versus Figure 4. Peak pulse power versus exponential initial junction temperature pulse duration (T initial = 25 °C) j P (W) P (kW) 500 PP 10.0 PP Pulse = 10/1000 µs 400 300 1.0 200 100 Tj(°C) tp(ms) 0 0.1 0 25 50 75 100 125 150 175 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 Figure 5. C l a mping voltage versus peak pulse Figure 6. Junction capacitance versus reverse current (exponential waveform, maximum applied voltage for unidirectional types (typical values) values) I (A) C(pF) 1000.0 PP 10000 Tjinitial = 25 °C F = 1 Mhz V = 30 mV OSC RMS T= 25 °C 100.0 j SM4T6V7AY 1000 8/20 µs 10.0 S 10/1000 µs SM4T30AY M4 SM SM 100 1.0 T6 4T 4T V7 30 82 SM4T82AY A A A Y Y Y /C /C /C A A A V (V) V (V) 0.1 Y Y Y CL 10 R 1 10 100 1000 1 10 100 1000 Figure 7. Ju nction capacitance versus reverse Figure 8. Relative variation of thermal applied voltage for bidirectional types (typical impedance, junction to ambient, versus pulse values) duration C(pF) 10000 F = 1 Mhz 1.00 Zth(j-a)/Rth(j-a) Recommended pad layout V = 30 mV OSTC = 25 °CRMS Printed circuit board FR4, j copper thickness= 35 µm 1000 SM4T6V7CAY 0.10 SM4T30CAY 100 SM4T82CAY V (V) tp(s) 10 R 0.01 1 10 100 1000 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 4/12 DocID17862 Rev 4

SM4TY Characteristics Figure 9 . Thermal resistance junction to Figure 10. Leakage current versus junction ambient versus copper surface under each lead temperature (typical values) 130 Rth(j-a)(°C/W) 1.E+03 IR(nA) 120 Printed circuit board FR4, 110 copper thickness= 35 µm 100 1.E+02 VR=VRM 90 VRM< 10V 80 70 1.E+01 60 50 40 30 1.E+00 VVR=≥V1R0MV 20 RM 10 S (cm²) T(°C) 0 Cu 1.E-01 j 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 25 50 75 100 125 150 Figure 11. Peak forward voltage drop versus peak forward current (typical values) I (A) 1.0E+02 FM 1.0E+01 Tj= 125 °C 1.0E+00 Tj= 25 °C 1.0E-01 V (V) FM 1.0E-02 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 DocID17862 Rev 4 5/12 12

Characteristics SM4TY Figure 12. ISO7637-2 pulse 1 response (V = -100 V) S Voltage (V) Voltage 10 0 -10 -20 -30 SM4T39AY -40 SM4T39CAY -50 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 Time (ms) Current (A) 5 Current 0 SM4T39AY 0.0 SM4T39CAY -10 -15 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 Time (ms) Figure 13. ISO7637-2 pulse 2a response (V = 50 V) S Voltage Voltage (V) 50 40 SM4T39AY 30 SM4T39CAY 20 10 0 -51 -1 49 99 149 199 249 Time (µs) Current (A) 4 Current SM4T39AY SM4T39CAY 0 -4 -51 -1 49 99 149 199 249 Time (µs) 6/12 DocID17862 Rev 4

SM4TY Characteristics Figure 14. ISO7637-2 pulse 3a response (V = -150 V) S Voltage (V) 30 Voltage 20 10 SM4T39AY 0 SM4T39CAY -10 -20 -30 -40 -50 -60 -0.2 0.8 1.8 0.0 0.0 0.0 Time (µs) Current (A) 0.5 Current 0 -0.5 SM4T39AY -1 SM4T39CAY -1.5 -2 -2.5 -0.2 0.8 1.8 0.0 0.0 0.0 Time (µs) Figure 15. ISO7637-2 pulse 3b response (V = 100 V) S Voltage (V) 50 Voltage 40 SM4T39AY 30 SM4T39CAY 20 10 0 --00..22 00..88 11..88 Time (µs) Current (A) 1.2 Current 0.8 SM4T39AY 0.4 SM4T39CAY 0.0 -0.4 -0.2 0.8 1.8 Time (µs) Note: ISO7637-2 pulses responses are not applicable for product with a stand off voltage lower than the average battery voltage (13.5 V). DocID17862 Rev 4 7/12 12

Application and design guidelines SM4TY 2 Application 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”. 3 Ordering information scheme Figure 16. Ordering information scheme SM 4T XX CA Y Surface mount Surge rating 4= 400WTransil in SMA Breakdown voltage Types CA = Bidirectional A = Unidirectional Automotive grade 8/12 DocID17862 Rev 4

SM4TY Package information 4 Package information • Case: JEDEC DO-214AB molded plastic over planar junction • Terminals: solder plated, solderable as per MIL-STD-750, Method 2026 • Polarity: for unidirectional types the band indicates cathode • Flammability: epoxy is rated UL 94, V0 • RoHS package 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. Table 3. SMA package dimensions Dimensions Ref. Millimeters Inches E1 Min. Max. Min. Max. A1 1.90 2.45 0.075 0.094 D A2 0.05 0.20 0.002 0.008 b 1.25 1.65 0.049 0.065 E c 0.15 0.40 0.006 0.016 D 2.25 2.90 0.089 0.114 A1 E 4.80 5.35 0.189 0.211 C A2 L b E1 3.95 4.60 0.156 0.181 L 0.75 1.50 0.030 0.059 Figure 17. SMA footprint dimensions in Figure 18. Marking layout(1) mm (inches) 1.4 2.63 1.4 (0.055) (0.104) (0.055) Cathode bar (unidirectionaldevicesonly) ECOPACK compliance 1.64 XXXX:Marking (0.064) x x x x Z: Manufacturing location Y: Year WW: week z y ww 5.43 (0.214) 1. Marking layout can vary according to assembly location. DocID17862 Rev 4 9/12 12

Package information SM4TY Table 4. Marking Order code Marking Order code Marking SM4T6V7AY AEY SM4T6V7CAY AAY SM4T7V6AY DUCY SM4T7V5CAY DBCY SM4T10AY DUHY SM4T10CAY DBHY SM4T12AY AXY SM4T12CAY ACY SM4T14AY DUKY SM4T14CAY DBKY SM4T15AY BGY SM4T15CAY BHY SM4T18AY BMY SM4T18CAY AJY SM4T21AY DUQY SM4T21CAY DBQY SM4T23AY DURY SM4T23CAY DBRY SM4T26AY DUSY SM4T26CAY DBSY SM4T28AY DUTY SM4T28CAY DBTY SM4T30AY DUUY SM4T30CAY DBUY SM4T33AY CGY SM4T33CAY CHY SM4T35AY CKY SM4T35CAY CLY SM4T39AY CMY SM4T39CAY CNY SM4T47AY DUZY SM4T47CAY DBZY SM4T50AY EUAY SM4T50CAY EBAY SM4T56AY CXY SM4T56CAY CYY SM4T68AY EUFY SM4T68CAY EBFY SM4T82AY EUIY SM4T82CAY EBIY 10/12 DocID17862 Rev 4

SM4TY Ordering information 5 Ordering information Table 5. Ordering information Order code Marking Package Weight Base qty Delivery mode SM4TxxxAY/CAY(1) See Table4 on page10 SMA 0.072 g 5000 Tape and reel 1. Where xxx is nominal value of V and A or CA indicates unidirectional or bidirectional version. See BR Table2 for list of available devices and their order codes 6 Revision history Table 6. Document revision history Date Revision Changes 08-Sep-2010 1 Initial release. Added order codes in Table2 and Table4. Updated 09-Nov-2011 2 Figure5, 6 and 7. 27-Mar-2012 3 Added footnote on page 1. 05-Oct-2015 4 Updated Table1. DocID17862 Rev 4 11/12 12

SM4TY IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved 12/12 DocID17862 Rev 4

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: S TMicroelectronics: SM4T18AY SM4T18CAY SM4T21AY SM4T21CAY SM4T23AY SM4T23CAY SM4T26AY SM4T26CAY SM4T28AY SM4T28CAY SM4T30AY SM4T30CAY SM4T33AY SM4T33CAY SM4T35AY SM4T35CAY SM4T39AY SM4T39CAY SM4T47AY SM4T47CAY SM4T56AY SM4T56CAY SM4T68AY SM4T68CAY SM4T6V7CAY SM4T10AY SM4T10CAY SM4T12AY SM4T12CAY SM4T14CAY SM4T15AY SM4T15CAY SM4T50AY SM4T50CAY SM4T6V7AY SM4T7V6AY SM4T7V6CAY SM4T82AY SM4T82CAY SM4T14AY