SM4TY Automotive 400 W TransilTM Datasheet - production data Features Peak pulse power: - 400 W (10/1000 s) - 2.3 kW (8/20 s) Stand-off voltage range: from 5 V to 70 V Unidirectional and bidirectional types Low leakage current: - 0.2 A at 25 C - 1 A at 85 C Operating Tj max: 150 C High power capability at Tj max: - 270 W (10/1000 s) JEDEC registered package outline Resin meets UL 94, V0 AEC-Q101 qualified A Unidirectional ISO 10605, C = 150 pF, R = 330 : - 30 kV (air discharge) - 30 kV (contact discharge) ISO 10605, C = 330 pF, R = 330 : - 30 kV (air discharge) - 30 kV (contact discharge) ISO 7637-2(a) - pulse 1: VS = -100 V - pulse 2a: VS = +50 V - pulse 3a: VS = -150 V - pulse 3b: VS = +100 V Description The SM4TY 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. a. Not applicable to parts with stand-off voltage lower than the average battery voltage (13.5 V) March 2012 This is information on a product in full production. Bidirectional SMA (JEDEC DO-214AC) Complies with the following standards K 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. SM4TY devices are packaged in SMA (SMA footprint in accordance with IPC 7531 standard). TM: Transil is a trademark of STMicroelectronics Doc ID 17862 Rev 3 1/12 www.st.com 12 Characteristics SM4TY 1 Characteristics Table 1. Absolute maximum ratings (Tamb = 25 C) Symbol VPP Parameter Value ISO 10605 (C = 150 pF, R = 330 ) Contact discharge Air discharge ISO 10605, C = 150 pF, R = 330 : Contact discharge Air discharge Peak pulse voltage PPP Peak pulse power dissipation(1) Tstg Unit 30 30 kV 30 30 Tj initial = Tamb 400 W Storage temperature range -65 to + 150 C Tj Operating junction temperature range -55 to + 150 C TL Maximum lead temperature for soldering during 10 s. 260 C 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Figure 1. Electrical characteristics - definitions Symbol VRM VBR VCL IRM IPP T VF RD Figure 2. Parameter Stand-off voltage Breakdown voltage Clamping voltage Leakage current @ VRM Peak pulse current Voltage temperature coefficient Forward voltage drop Dynamic resistance Unidirectional I I IF IPP VF VCL VBR VRM V VCLVBR VRM IRM IR IPP IPP %IPP 100 0 Pulse waveform tr = rise time (s) tp = pulse duration time (s) 2/12 tr V IRM IR Pulse definition for electrical characteristics 50 IR IRM tp Doc ID 17862 Rev 3 t VRMVBR VCL Bidirectional SM4TY Table 2. Characteristics Electrical characteristics, typical values if not otherwise stated (Tamb = 25 C) Order code 25 C 85 C A RD VCL @ IPP V @ IPP 10/1000 CL 10/1000 s 8/20 s s VBR @ IR (1) IRM max @ VRM min. typ. max. V V max. RD 8/20 s max. mA V(3) A(4) V(3) T (2) max A(4) 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 8.0 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: tp < 50 ms 2. To calculate maximum clamping voltage at other surge level, use the following formula: VCLmax = VCL - RD x (IPP - IPPappli) where IPPappli is the surge current in the application 3. To calculate VBR or VCL versus junction temperature, use the following formulas: VBR @ TJ = VBR @ 25 C x (1 + T x (TJ - 25)) VCL @ TJ = VCL @ 25 C x (1 + T x (TJ - 25)) 4. Surge capability given for both directions for unidirectional and bidirectional types. Doc ID 17862 Rev 3 3/12 Characteristics Figure 3. SM4TY Peak pulse power dissipation versus initial junction temperature PPP(W) 500 Figure 4. Peak pulse power versus exponential pulse duration (Tj initial = 25 C) PPP(kW) 10.0 Pulse = 10/1000 s 400 300 1.0 200 100 Tj(C) 0 0 25 Figure 5. 50 75 100 125 150 175 Clamping voltage versus peak pulse current (exponential waveform, maximum values) Figure 6. IPP(A) 1000.0 tp(ms) 0.1 1.0E-03 10000 1.0E-02 1.0E-01 1.0E+00 1.0E+01 Junction capacitance versus reverse applied voltage for unidirectional types (typical values) C(pF) Tjinitial = 25 C F = 1 Mhz VOSC = 30 mVRMS Tj = 25 C 100.0 SM4T6V7AY 1000 8/20 s 10.0 1 Figure 7. 10000 10 SM4T82AY/CAY 0.1 SM4T30AY/CAY SM4T6V7AY/CAY 1.0 SM4T30AY 10/1000 s 100 SM4T82AY VCL(V) 100 1000 Junction capacitance versus reverse applied voltage for bidirectional types (typical values) 1 1000 10 Figure 8. C(pF) F = 1 Mhz VOSC = 30 mVRMS Tj = 25 C VR(V) 10 1.00 100 1000 Relative variation of thermal impedance, junction to ambient, versus pulse duration Zth(j-a)/Rth(j-a) Recommended pad layout Printed circuit board FR4, copper thickness = 35 m SM4T6V7CAY 0.10 SM4T30CAY 100 SM4T82CAY VR(V) 10 1 4/12 10 100 1000 tp(s) 0.01 1.0E-03 Doc ID 17862 Rev 3 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 SM4TY Characteristics Figure 9. 130 Thermal resistance junction to ambient versus copper surface under each lead Figure 10. Leakage current versus junction temperature (typical values) Rth(j-a)(C/W) 1.E+03 120 IR(nA) Printed circuit board FR4, copper thickness = 35 m 110 100 1.E+02 90 VR = VRM VRM < 10 V 80 70 60 1.E+01 50 40 30 VR = VRM VRM 10 V 1.E+00 20 10 SCu(cm) 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Tj(C) 1.E-01 5.0 25 50 75 100 125 150 Figure 11. Peak forward voltage drop versus peak forward current (typical values) 1.0E+02 IFM(A) 1.0E+01 Tj = 125 C 1.0E+00 Tj = 25 C 1.0E-01 VFM(V) 1.0E-02 0.0 0.5 1.0 1.5 2.0 Doc ID 17862 Rev 3 2.5 3.0 3.5 5/12 Characteristics SM4TY Figure 12. ISO7637-2 pulse 1 response (VS = -100 V) Voltage (V) Voltage 10 0 -10 -20 -30 SM4T39AY -40 -50 -0.5 5 0.0 0.5 1.0 Time (ms) 1.5 2.0 SM4T39CAY 2.5 Current (A) 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 (VS = 50 V) 50 Voltage Voltage (V) 40 SM4T39AY 30 SM4T39CAY 20 10 0 -51 4 -1 49 99 Time (s) 149 199 249 Current (A) Current SM4T39AY SM4T39CAY 0 -4 -51 -1 49 99 149 Time (s) 6/12 Doc ID 17862 Rev 3 199 249 SM4TY Characteristics Figure 14. ISO7637-2 pulse 3a response (VS = -150 V) Voltage (V) 30 Voltage 20 10 SM4T39AY 0 SM4T39CAY -10 -20 -30 -40 -50 -60 -0.2 0.8 1.8 Time (s) 0.0 0.0 0.0 0.5 Current (A) Current 0 -0.5 SM4T39AY -1 SM4T39CAY -1.5 -2 -2.5 -0.2 0.8 0.0 1.8 0.0 0.0 Time (s) Figure 15. ISO7637-2 pulse 3b response (VS = 100 V) 50 Voltage (V) Voltage 40 SM4T39AY 30 SM4T39CAY 20 10 0 -0.2 1.2 0.8 1.8 Time (s) Current (A) Current 0.8 SM4T39AY 0.4 SM4T39CAY 0.0 -0.4 -0.2 0.8 1.8 Time (s) Note: ISO7637-2 pulses responses are not applicable for product with a stand off voltage lower than the average battery voltage (13.5 V). Doc ID 17862 Rev 3 7/12 Application and design guidelines 2 SM4TY 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 Surface mount Surge rating 4 = 400 W Transil in SMA Breakdown voltage Types CA = Bidirectional A = Unidirectional Automotive grade 8/12 Doc ID 17862 Rev 3 4T XX CA Y SM4TY 4 Package information 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(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Table 3. SMA dimensions Dimensions Ref. Millimeters Inches E1 D Min. Max. Min. Max. A1 1.90 2.45 0.075 0.094 A2 0.05 0.20 0.002 0.008 b 1.25 1.65 0.049 0.065 c 0.15 0.40 0.006 0.016 D 2.25 2.90 0.089 0.114 E 4.80 5.35 0.189 0.211 E1 3.95 4.60 0.156 0.181 L 0.75 1.50 0.030 0.059 E A1 A2 C L b 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 (unidirectional devices only ) 1.64 (0.064) 5.43 x x x x z y ww ECOPACK compliance XXXX: Marking Z: Manufacturing location Y: Year WW: week (0.214) 1. Marking layout can vary according to assembly location. Doc ID 17862 Rev 3 9/12 Package information Table 4. SM4TY Marking Order code 10/12 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 Doc ID 17862 Rev 3 SM4TY 5 Ordering information Ordering information Table 5. Ordering information Order code SM4TxxxAY/CAY(1) Marking Package Weight Base qty Delivery mode See Table 4 on page 10 SMA 0.072 g 5000 Tape and reel 1. Where xxx is nominal value of VBR and A or CA indicates unidirectional or bidirectional version. See Table 2 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. 09-Nov-2011 2 Added order codes in Table 2 and Table 4. Updated Figure 5, 6 and 7. 27-Mar-2012 3 Added footnote on page 1. Doc ID 17862 Rev 3 11/12 SM4TY Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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