SM15TY

SM15TY Automotive 1500 W Transil™ Features ■ peak pulse power: – 1500 W (10/1000 µs) – 10 kW (8/20 µs) stand-off voltage range: from 15 V to 58 V unidirectional and bidirectional types low leakage current: – 0.2 µA at 25 °C – 1 µA at 85 °C operating Tj max: 150 °C high power capability at Tjmax: – 1250 W (10/1000 µs) JEDEC registered package outline resin meets UL 94, V0 AEC qualified K A ■ ■ ■ Unidirectional Bidirectional SMC (JEDEC DO-214AB) ■ ■ ■ ■ ■ Description The SM15TY Transil series has been designed to protect sensitive automotive circuits against surges defined in ISO7637-2 and against electrostatic discharges according to IEC 610004-2 and ISO10605. 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. SM15TY are packaged in SMC (SMC footprint in accordance with IPC 7531 standard). Complies with the following standards ■ IEC 61000-4-2 level 4: – 15 kV (air discharge) – 8 kV (contact discharge) ISO10605 - C = 330 pF, R = 330 Ω: – 15 kV (air discharge) – 8 kV (contact discharge) ISO 7637-2 (for pulse 1 and 2a, applicable only to parts with stand-off voltage (VRM) lower than the average battery voltage: 13.5 V): – Pulse 1: VS = -100 V – Pulse 2a: VS = +50 V – Pulse 3a: VS = -150 V – Pulse 3b: VS = +100 V ■ ■ TM: Transil is a trademark of STMicroelectronics September 2010 Doc ID 17865 Rev 1 1/12 www.st.com 12 Characteristics SM15TY 1 Table 1. Symbol Characteristics Absolute maximum ratings (Tamb = 25 °C) Parameter ISO10605 (C = 330 pF, R = 330 Ω) contact discharge air discharge IEC61000-4-2 contact discharge air discharge Tj initial = Tamb Value Unit VPP Peak pulse voltage 30 30 30 30 1500 -65 to + 150 -40 to + 150 260 kV PPP Tstg Tj TL Peak pulse power dissipation(1) Storage temperature range Operating junction temperature range Maximum lead temperature for soldering during 10 s. W °C °C °C 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Table 2. Symbol Rth(j-l) Rth(j-a) Thermal parameter Parameter Junction to leads Junction to ambient on printed circuit on recommended pad layout Value 15 90 Unit °C/W °C/W Figure 1. Electrical characteristics - definitions I I IPP Symbol VRM VBR VCL IRM IPP αT VF RD Parameter Stand-off voltage Breakdown voltage Clamping voltage Leakage current @ VRM Peak pulse current Voltage temperature coefficient Forward voltage drop Dynamic resistance Unidirectional IF VCL VBR VRM IRM IR VF V VCLVBR VRM IR IRM IRM IR V VRMVBR VCL IPP IPP Bidirectional Figure 2. Pulse definition for electrical characteristics %IPP 100 50 Pulse waveform tr = rise time (µs) tp = pulse duration time (µs) 0 tr tp t 2/12 Doc ID 17865 Rev 1 SM15TY Table 3. Characteristics Electrical characteristics, typical values unless otherwise stated (Tamb = 25 °C) IRM max@VRM VBR @IR (1) VCL @IPP 10/1000 µs max. mA 18 22 24 27 30 33 36 39 47 68 1 1 1 1 1 1 1 1 1 1 RD 10/1000 µs VCL @IPP 8/20 µs max. RD 8/20 µs αT (2) Order code 25 °C 85 °C µA V 1 1 1 1 1 1 1 1 1 1 15.3 18.8 20.5 23.1 25.6 28.2 30.8 33.3 40.2 58.1 min. typ. V 17.1 20.9 22.8 25.7 28.5 31.4 34.2 37.1 44.7 64.6 max. A(4) 308 254 234 207 187 169 156 143 119 83 V(3) 25.2 30.6 33.2 37.5 41.5 45.7 49.9 53.9 64.5 92 A(4) 59.5 49 45 40 36 33 30 28 23.2 16.3 Ω 0.106 0.153 0.178 0.228 0.278 0.333 0.403 0.461 0.653 1.26 V(3) 32.5 39.3 42.8 48.3 53.5 59 64.3 69.7 84 121 Ω 0.044 0.064 0.075 0.096 0.12 0.14 0.17 0.2 0.291 0.6 10-4/ °C 8.8 9.2 9.4 9.6 9.7 9.8 9.9 10 10.1 10.4 SM15T18AY/CAY SM15T22AY/CAY SM15T24AY/CAY SM15T27AY/CAY SM15T30AY/CAY SM15T33AY/CAY SM15T36AY/CAY SM15T39AY/CAY SM15T47AY/CAY SM15T68AY/CAY 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 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 + αT x (TJ - 25)) VCL @ TJ = VCL @ 25 °C x (1 + αT x (TJ - 25)) 4. Surge capability given for both directions for unidirectional and bidirectional types. Doc ID 17865 Rev 1 3/12 Characteristics SM15TY Figure 3. Peak pulse power dissipation versus initial junction temperature (typical values) 10/1000 µs Figure 4. Peak pulse power versus exponential pulse duration (Tj initial = 25 °C) 2000 PPP(W) 100.0 PPP(kW) 1500 10.0 1000 1.0 500 0 0 25 50 75 100 125 150 Tj(°C) 175 0.1 1.0E-03 tp (ms) 1.0E-02 1.0E-01 1.0E+00 1.0E+01 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) 1000.0 IPP(A) T j initial=25 °C SM15T22AY/CAY SM15T30AY/CAY 8/20 µs 10/1000 µs 10 ms 10.00 C(nF) F=1 MHz Vosc =30 mVRMS Tj=25 °C 100.0 10.0 1.00 SM15T30AY 1.0 SM15T68AY/CAY 0.1 10 100 VCL(V) 1000 0.10 1 10 SM15T68AY VR(V) 100 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(nF) 10.0 F=1 MHz Vosc =30 mVRMS Tj=25 °C 100 90 80 70 SM15T30CAY Rth(j-a)(°C/W) Printed circuit board FR4, copper thickness = 35 µm 60 50 40 30 1.0 SM15T68CAY 20 VR(V) 0.1 1 10 100 10 0 0.0 SCu(cm²) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 4/12 Doc ID 17865 Rev 1 SM15TY Characteristics Figure 9. Leakage current versus junction temperature (typical values) Figure 10. Peak forward voltage drop versus peak forward current (typical values) 100.0 1.0E+04 IR(nA) IFM(A) 1.0E+03 10.0 1.0E+02 Tj = 125 °C Tj = 25 °C 1.0 1.0E+01 1.0E+00 25 Tj(°C) 50 75 100 125 150 0.1 0.0 VFM(V) 0.5 1.0 1.5 2.0 2.5 Figure 11. ISO7637-2 pulse 1 response (VS = -100 V) Voltage (V) 10 0 -10 -20 -30 -40 Voltage SM15T39AY SM15T39CAY -50 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 Time (ms) 5 Current (A) Current 0 SM15T39AY -5 SM15T39CAY -10 -15 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 Time (ms) Doc ID 17865 Rev 1 5/12 Characteristics Figure 12. ISO7637-2 pulse 2 response (VS = 50 V) 50 SM15TY Voltage (V) Voltage 40 30 SM15T39AY SM15T39CAY 20 10 0 -20 0 20 40 60 80 100 Time (µs) 12 Current (A) Current 8 SM15T39AY 4 SM15T39CAY 0 -4 -20 0 20 40 60 80 100 Time (µs) Figure 13. ISO7637-2 pulse 3a response (VS = -150 V) Voltage (V) 20 Voltage 0.0 SM15T39AY SM15T39CAY -20 -40 -60 -0.5 0.0 0.5 1.0 1.5 2.0 Time (µs) 1 Current (A) Current 0.0 SM15T39AY SM15T39CAY -1 -2 -0.2 0.8 1.8 0.0 0.0 0.0 Time (µs) 6/12 Doc ID 17865 Rev 1 SM15TY Figure 14. ISO7637-2 pulse 3b response (VS = 100 V) 50 40 30 20 10 0 -0.2 Characteristics Voltage (V) Voltage SM15T39AY SM15T39CAY 0.8 1.8 Time (µs) 1.2 Current (A) Current 0.8 SM15T39AY 0.4 SM15T39CAY 0 -0.4 -0.2 0.8 1.8 Time (µs) Doc ID 17865 Rev 1 7/12 Application and design guidelines SM15TY 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 15. Ordering information scheme SM Surface mount Surge rating 15 = 1500 W Transil in SMC Bre a k down v olta ge 15T XX CA Y Types CA = Bidirectional A = Unidirectional Automotive grade 8/12 Doc ID 17865 Rev 1 SM15TY 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 4. SMC dimensions Dimensions Ref. E1 Millimeters Min. Max. 2.45 0.20 3.20 0.40 6.25 8.15 7.15 4.70 1.50 Inches Min. 0.075 0.002 0.114 0.006 0.218 0.305 0.260 0.173 0.030 Max. 0.096 0.008 0.126 0.016 0.246 0.321 0.281 0.185 0.059 A1 D 1.90 0.05 2.90 0.15 5.55 7.75 6.60 4.40 0.75 A2 b E c D A1 E b C A2 E2 L E1 E2 L Figure 16. SMC footprint dimensions in Figure 17. Marking layout(1) mm (inches) 1.54 (0.061) 5.11 (0.201) 1.54 (0.061) Cathode bar (unidirectional devices only ) 3.14 (0.124) xxx z y ww ECOPACK compliance XXX: Marking Z: Manufacturing location Y: Year WW: week 8.19 (0.322) 1. Marking layout can vary according to assembly location. Doc ID 17865 Rev 1 9/12 Package information Table 5. Marking Marking MEEY MEKY MEMY MEPY MERY METY MEVY MEXY MFAY MFPY Order code SM15T18CAY SM15T22CAY SM15T24CAY SM15T27CAY SM15T30CAY SM15T33CAY SM15T36CAY SM15T39CAY SM15T47CAY SM15T68CAY SM15TY Order code SM15T18AY SM15T22AY SM15T24AY SM15T27AY SM15T30AY SM15T33AY SM15T36AY SM15T39AY SM15T47AY SM15T68AY Marking BEEY BEKY BEMY BEPY BERY BETY BEVY BEXY BFAY BFPY 10/12 Doc ID 17865 Rev 1 SM15TY Ordering information 5 Ordering information Table 6. Ordering information Marking See Table 5 on page 10 Package SMC Weight 0.25 g Base qty 2500 Delivery mode Tape and reel Order code SM15TxxxAY/CAY(1) 1. Where xxx is nominal value of VBR and A or CA indicates unidirectional or bidirectional version. See Table 3 for list of available devices and their order codes 6 Revision history Table 7. Date 15-Sep-2010 Document revision history Revision 1 Initial release. Description of changes Doc ID 17865 Rev 1 11/12 SM15TY 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. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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