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this is information on a product in full production. march 2012 doc id 17865 rev 3 1/12 12 sm15ty automotive 1500 w transil? datasheet ? production data features peak pulse power: ? 1500 w (10/1000 s) ? 10 kw (8/20 s) stand-off voltage range: from 5.8 v to 70 v unidirectional and bidirectional types low leakage current: ? 0.2 a at 25 c ? 1 a at 85 c operating t j max : 150 c high power capability at t jmax : ? 1250 w (10/1000 s) jedec registered package outline resin meets ul 94, v0 aec-q101 qualified complies with the following standards 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: v s = -100 v ? pulse 2a: v s = +50 v ? pulse 3a: v s = -150 v ? pulse 3b: v s = +100 v description the sm15ty 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. 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 ov er time. sm15ty are packaged in smc (smc footprint in accordance with ipc 7531 standard). 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) k a unidirectional bidirectional smc (jedec do-214ab) www.st.com
characteristics sm15ty 2/12 doc id 17865 rev 3 1 characteristics figure 1. electrical characteristics - definitions figure 2. pulse definition for electrical characteristics table 1. absolute maximum ratings (t amb = 25 c ) symbol parameter value unit v pp peak pulse voltage iso 10605 (c = 330 pf, r = 330 ): contact discharge air discharge iso 10605 (c = 150 pf, r = 330 ): contact discharge air discharge 30 30 30 30 kv p pp peak pulse power dissipation (1) t j initial = t amb 1500 w t stg storage temperature range -65 to + 150 c t j operating junction temperature range -40 to + 150 c t l maximum lead temperature for soldering during 10 s. 260 c 1. for a surge greater than the maximum val ues, the diode will fail in short-circuit. v cl v br v rm i rm i r i pp v i i rm i r i pp v rm v br v cl v cl v br v rm i rm i r i pp v i i rm i r i pp v rm v br v cl v cl v br v rm i rm i r i pp v i i f v f v cl v br v rm i rm i r i pp v i i f v f unidirectional bidirectional symbol parameter v stand-off voltage v breakdown voltage v clamping voltage i leakage current @ v i peak pulse current t voltage temperature coefficient v forward voltage drop r dynamic resistance rm br cl rm rm pp f d 100 50 0 pulse waveform tr = rise time (s) tp = pulse duration time (s) t %i pp t p t r
sm15ty characteristics doc id 17865 rev 3 3/12 table 2. electrical characteristics, typical values unless otherwise stated (t amb = 25 c) order code i rm max@v rm v br @i r (1) v cl @i pp 10/1000 s r d 10/1000 s v cl @i pp 8/20 s r d 8/20 s t (2) 25 c 85 c min typ max max max max a v v ma v (3) a (4) v (3) a (4) 10-4/ c sm15t6v8ay/cay 500 2000 5.8 6.45 6.8 7. 14 10 10.5 143 0.023 13.4 746 0.008 5.7 sm15t7v5ay/cay 250 1000 6.4 7.13 7.5 7. 88 10 11.3 132 0.026 14.5 690 0.01 6.1 sm15t10ay/cay 10 50 8.55 9.5 10 10.5 1 14.5 103 0.039 18.6 538 0.015 7.3 sm15t12ay/cay 0.2 1 10.2 11.4 12 12. 6 1 16.7 90 0.046 21.7 461 0.02 7.8 sm15t15ay/cay 0.2 1 12.8 14.3 15 15. 8 1 21.2 71 0.076 27.2 368 0.031 8.4 sm15t18ay/cay 0.2 1 15.3 17.1 18 18. 9 1 25.2 59.5 0.106 32.5 308 0.044 8.8 SM15T22AY/cay 0.2 1 18.8 20.9 22 23. 1 1 30.6 49 0.153 39.3 254 0.064 9.2 sm15t24ay/cay 0.2 1 20.5 22.8 24 25. 2 1 33.2 45 0.178 42.8 234 0.075 9.4 sm15t27ay/cay 0.2 1 23.1 25.7 27 28. 4 1 37.5 40 0.228 48.3 207 0.096 9.6 sm15t30ay/cay 0.2 1 25.6 28.5 30 31. 5 1 41.5 36 0.278 53.5 187 0.12 9.7 sm15t33ay/cay 0.2 1 28.2 31.4 33 3 4.7 1 45.7 33 0.333 59 169 0.14 9.8 sm15t36ay/cay 0.2 1 30.8 34.2 36 37. 8 1 49.9 30 0.403 64.3 156 0.17 9.9 sm15t39ay/cay 0.2 1 33.3 37.1 39 41.0 1 53.9 28 0.461 69.7 143 0.2 10 sm15t47ay/cay 0.2 1 40.2 44.7 47 49. 4 1 64.5 23.2 0.653 84 119 0.291 10.1 sm15t56ay/cay 0.2 1 48 53.3 56 58.9 1 77.4 20 0.925 100 100 0.411 10.3 sm15t68ay/cay 0.2 1 58.1 64.6 68 71.4 1 92 16.3 1.26 121 83 0.6 10.4 sm15t75ay/cay 0.2 1 64.1 71.3 75 7 8.8 1 103 14.6 1.66 134 75 0.74 10.5 sm15t82ay/cay 0.2 1 70 77.8 82 86.0 1 113 13.9 1.94 146 69 0.87 10.5 1. pulse test: t p < 50 ms 2. to calculate maximum clamping voltage at other surge level, use the following formula: v cl max = v cl - r d x (i pp - i ppappli ) where ipp appli 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 + t x (t j - 25)) v cl @ t j = v cl @ 25 c x (1 + t x (t j - 25)) 4. surge capability given for both directions for unidirectional and bidirectional types.
characteristics sm15ty 4/12 doc id 17865 rev 3 figure 3. peak pulse power dissipation versus initial junction temperature (typical values) figure 4. peak pulse power versus exponential pulse duration (t j initial = 25 c) 0 500 1000 1500 2000 0 25 50 75 100 125 150 175 p (w) pp t (c) j 10/1000 s 0.1 1.0 10.0 100.0 1.0e-03 1.0e-02 1.0e-01 1.0e+00 1.0e+01 p (kw) pp t p (ms) figure 5. clamping voltage versus peak pulse current (exponential waveform, maximum values) figure 6. junction capacitance versus reverse applied voltage for unidirectional types (typical values) i (a) pp 0.1 1.0 10.0 100.0 1000.0 1 10 100 1000 10/1000 s 8/20 s v (v) cl sm15t6v8ay/cay sm15t30ay/cay sm15t82ay/cay t = 25 c j initial c(pf) 100 1000 10000 1 10 100 1000 sm15t6v8ay sm15t30ay sm15t82ay v (v) r f = 1 mhz v = 30 mv t = 25 c osc rms j figure 7. junction capacitance versus reverse applied voltage for bidirectional types (typical values) figure 8. thermal resistance junction to ambient versus copper surface under each lead c(pf) 100 1000 10000 1 10 100 1000 sm15t6v8cay sm15t30cay sm15t82cay f = 1 mhz v = 30 mv t = 25 c osc rms j v (v) r 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 r (c/w) th(j-a) s (cm2) cu printed circuit board fr4, copper thickness = 35 m
sm15ty characteristics doc id 17865 rev 3 5/12 figure 11. relative variation of thermal impeda nce junction to ambient versus pulse duration figure 9. leakage current versus junction temperature (typical values) figure 10. peak forward voltage drop versus peak forward current (typical values) i (na) r 1.e+00 1.e+01 1.e+02 1.e+03 1.e+04 25 50 75 100 125 150 t (c) j v=v rrm v < 10 v rm v10v rm 0.1 1.0 10.0 100.0 0.0 0.5 1.0 1.5 2.0 2.5 v (v) fm i (a) fm t = 25 c j t = 125 c j 0.01 0.10 1.00 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 recommended pad layout single pulse printed circuit board, copper thickness = 35 m z/r th(j-a) th(j-a) t (s) p
characteristics sm15ty 6/12 doc id 17865 rev 3 figure 12. iso7637-2 pulse 1 response (v s = -100 v) figure 13. iso7637-2 pulse 2 response (v s = 50 v) voltage (v) voltage -50 10 0 -10 -20 -30 -40 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 -15 5 -5 -10 0 current current (a) sm15t39ay sm15t39cay sm15t39ay sm15t39cay time (ms) time (ms) voltage (v) voltage 10 0 -20 0 20 40 60 80 100 -4 4 0 current current (a) sm15t39ay sm15t39cay sm15t39ay sm15t39cay 10 50 40 30 20 -20 0 20 40 60 80 100 8 12 time (s) time (s)
sm15ty characteristics doc id 17865 rev 3 7/12 figure 14. iso7637-2 pulse 3a response (v s = -150 v) figure 15. iso7637-2 pulse 3b response (v s = 100 v) note: iso7637-2 pulses responses are not applicable for product with a stand off voltage lower than the average battery voltage (13.5 v). voltage (v) voltage -20 -2 0.0 -1 current current (a) sm15t39ay sm15t39cay sm15t39ay sm15t39cay -40 20 0.0 -0.2 0.8 1.8 0.0 0.0 0.0 1 -0.5 0.0 0.5 1.0 1.5 2.0 -60 time (s) time (s) voltage (v) voltage 20 -0.4 0 current current (a) sm15t39ay sm15t39cay sm15t39ay sm15t39cay 10 40 30 -0.2 0.8 1.8 0 time (s) time (s) -0.2 0.8 1.8 50 0.4 0.8 1.2
application and design guidelines sm15ty 8/12 doc id 17865 rev 3 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 surface mount surge rating 15 = 1500 w transil in smc breakdown voltage type s ca = bidirectional a = unidirectional automotive grade sm 15t xx ca y
sm15ty package information doc id 17865 rev 3 9/12 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. smc dimensions ref. dimensions millimeters inches min. max. min. max. a1 1.90 2.45 0.075 0.096 a2 0.05 0.20 0.002 0.008 b 2.90 3.20 0.114 0.126 c 0.15 0.40 0.006 0.016 d 5.55 6.25 0.218 0.246 e 7.75 8.15 0.305 0.321 e1 6.60 7.15 0.260 0.281 e2 4.40 4.70 0.173 0.185 l 0.75 1.50 0.030 0.059 figure 17. smc footprint dimensions in mm (inches) figure 18. marking layout (1) 1. marking layout can vary according to assembly location. e c l e2 e1 d a1 a2 b 8.19 1.54 5.11 1.54 (0.061) (0.201) (0.322) (0.124) (0.061) 3.14 y w w z x x x ecopack compliance xxx: marking z: manufacturing location y: year ww: week cathode bar ( unidirectional devices only )
package information sm15ty 10/12 doc id 17865 rev 3 table 4. marking order code marking order code marking sm15t6v8ay mdey sm15t6v8cay bdey sm15t7v5ay mdgy sm15t7v5cay bdgy sm15t10ay mdpy sm15t10cay bdpy sm15t12ay mdty sm15t12cay bdty sm15t15ay mdxy sm15t15cay bdxy sm15t18ay meey sm15t18cay beey SM15T22AY meky sm15t22cay beky sm15t24ay memy sm15t24cay bemy sm15t27ay mepy sm15t27cay bepy sm15t30ay mery sm15t30cay bery sm15t33ay mety sm15t33cay bety sm15t36ay mevy sm15t36cay bevy sm15t39ay mexy sm15t39cay bexy sm15t47ay mfay sm15t47cay bfay sm15t56ay mfby sm15t56cay bfby sm15t68ay mfpy sm15t68cay bfpy sm15t75ay mfoy sm15t75cay bfoy sm15t82ay mfry sm15t82cay bfry
sm15ty ordering information doc id 17865 rev 3 11/12 5 ordering information 6 revision history table 5. ordering information order code marking package weight base qty delivery mode sm15txxxay/cay (1) 1. where xxx is nominal value of v br and a or ca indicates unidirectional or bidirectional version. see table 2 for list of available devices and their order codes see table 4 on page 10 smc 0.25 g 2500 tape and reel table 6. document revision history date revision changes 15-sep-2010 1 initial release. 09-nov-2011 2 added order codes in ta b l e 2 and ta bl e 4 . updated figure 5 , 6 , 7 , and table 1. added figure 11 . deleted old table 2. thermal parameter. updated iso 10605, c = 150 pf - r = 330 : on page 1 27-mar-2012 3 added footnote on page 1.
sm15ty 12/12 doc id 17865 rev 3 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 he rein 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 as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by two authorized st representatives, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2012 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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