SMAJ TransilTM Features Peak pulse power: - 400 W (10/1000 s) - 2.3 kW (8/20 s) A Stand off voltage range: from 5 V to 188 V Unidirectional and bidirectional types K Low leakage current: - 0.2 A at 25 C - 1 A at 85 C Unidirectional Operating Tj max: 150 C High power capability at Tj max: - 270 W (10/1000 s) JEDEC registered package outline Bidirectional SMA (JEDEC DO-214AC) Description Complies with the following standards IEC 61000-4-2 level 4 - 15 kV (air discharge) - 8 kV (contact discharge) IEC 61000-4-5 (see Table 3 for surge level) MIL STD 883G, method 3015-7 Class 3B - 25 kV HBM (human body model) Resin meets UL 94, V0 MIL-STD-750, method 2026 solderability EIA STD RS-481 and IEC 60286-3 packing IPC 7531 footprint The SMAJ Transil series has been designed to protect sensitive equipment against electrostatic discharges according to IEC 61000-4-2, and MIL STD 883, method 3015, and electrical over stress according to IEC 61000-4-4 and 5. These devices are generally used against surges below 400 W (10/1000 s). Planar technology makes these devices suitable for high-end equipment and SMPS where low leakage current and high junction temperature are required to provide reliability and stability over time. SMAJ are packaged in SMA (SMA footprint in accordance with IPC 7531 standard). TM: Transil is a trademark of STMicroelectronics July 2010 Doc ID 5544 Rev 12 1/10 www.st.com 10 Characteristics SMAJ 1 Characteristics Table 1. Absolute maximum ratings (Tamb = 25 C) Symbol Parameter Value Unit 400 W PPP Peak pulse power dissipation (1) Tstg 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 Value Unit 30 C/W 120 C/W Tj initial = Tamb 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Table 2. Thermal resistances Symbol Parameter Rth(j-l) Junction to leads Rth(j-a) Junction to ambient on printed circuit on recommended pad layout 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 V IRM IR IPP IPP Repetitive pulse current tr = rise time (s) tp = pulse duration time (s) 2/10 IR IRM IRM IR Pulse definition for electrical characteristics tr VCLVBR VRM tp Doc ID 5544 Rev 12 VRMVBR VCL Bidirectional SMAJ Table 3. Characteristics Electrical characteristics - parameter values (Tamb = 25 C) IRM max@VRM Order code 25 C 85 C A VBR @IR (1) min V typ V VCL @IPP RD (2) 10/1000 s 10/1000 s VCL @IPP 8/20 s max max RD (2) 8/20 s T (3) max mA V A(4) V A(4) 10-4/ C SMAJ5.0A/CA 20 50 5 6.4 6.74 10 9.2 43.5 0.049 13.4 174 0.036 5.7 SMAJ6.0A/CA 20 50 6 6.7 7.05 10 10.3 38.8 0.075 13.7 170 0.037 5.9 SMAJ6.5A/CA 20 50 6.5 7.2 7.58 10 11.2 35.7 0.091 14.5 160 0.041 6.1 SMAJ8.5A/CA 20 50 8.5 9.4 9.9 1 14.4 27.7 0.145 19.5 124 0.073 7.3 SMAJ10A/CA 0.2 1 10 11.1 11.7 1 17 23.5 0.201 21.7 106 0.089 7.8 SMAJ12A/CA 0.2 1 12 13.3 1 19.9 20.1 0.259 25.3 91 0.116 8.3 SMAJ13A/CA 0.2 1 13 14.4 15.2 1 21.5 18.6 0.298 27.2 85 0.132 8.4 SMAJ15A/CA 0.2 1 15 16.7 17.6 SMAJ18A/CA 0.2 1 18 SMAJ20A/CA 0.2 1 SMAJ22A/CA 0.2 SMAJ24A/CA SMAJ26A/CA 14 1 24.4 16.4 0.361 32.5 71 0.197 8.8 21.1 1 29.2 13.7 0.514 39.3 59 0.291 9.2 20 22.2 23.4 1 32.4 12.3 0.637 42.8 54 0.338 9.4 1 22 24.4 25.7 1 35.5 11.2 0.760 48.3 48 0.444 9.6 0.2 1 24 26.7 28.1 1 38.9 10.3 0.912 50 46 0.446 9.6 0.2 1 26 28.9 30.4 1 42.1 9.5 1.07 53.5 43 0.502 9.7 SMAJ28A/CA 0.2 1 28 31.1 32.7 1 45.4 8.8 1.26 59 39 0.632 9.8 SMAJ30A/CA 0.2 1 30 33.3 35.1 1 48.4 8.3 1.39 64.3 36 0.762 9.9 SMAJ33A/CA 0.2 1 33 36.7 38.6 1 53.3 7.5 1.70 69.7 33 0.884 10 SMAJ40A/CA 0.2 1 40 44.4 46.7 1 64.5 6.2 2.49 84 27 1.30 10.1 SMAJ43A/CA 0.2 1 43 47.8 50.3 1 69.4 5.7 2.91 91 25 1.53 10.2 SMAJ48A/CA 0.2 1 48 53.3 56.1 1 77.4 5.2 3.56 100 23 1.79 10.3 SMAJ58A/CA 0.2 1 58 64.4 67.8 1 93.6 4.3 5.21 121 19 2.62 10.4 SMAJ70A/CA 0.2 1 70 77.8 81.9 1 113 3.5 7.72 146 16 3.75 10.5 SMAJ85A/CA 0.2 1 85 94 99 1 137 2.9 11.4 178 13 5.70 10.6 SMAJ100A/CA 0.2 1 100 111 117 1 162 2.5 15.7 212 11 8.10 10.7 SMAJ130A/CA 0.2 1 130 144 152 1 209 1.9 26.0 265 9 11.7 10.8 SMAJ154A/CA 0.2 1 154 171 180 1 246 1.6 35.6 317 7 18.3 10.8 SMAJ170A/CA 0.2 1 170 189 199 1 275 1.4 47.2 353 6.5 22.2 10.8 SMAJ188A/CA 0.2 1 188 209 220 1 328 1.4 69.3 388 6 26.2 10.8 20 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 @ 25C x (1 + T x (TJ - 25)), VCL @ TJ = VCL @ 25C x (1 + T x (TJ - 25)) 4. Surge capability given for both directions for unidirectional and bidirectional types. Doc ID 5544 Rev 12 3/10 Characteristics Figure 3. SMAJ Peak pulse power dissipation versus initial junction temperature Figure 4. Ppp (W) 10.0 500 Peak pulse power versus exponential pulse duration (Tj initial = 25 C) PPP(kW) Tj initial = 25 C 400 300 1.0 200 100 Tj(C) tP(ms) 0 0.1 0 25 Figure 5. 50 75 100 125 150 175 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 Clamping voltage versus peak pulse current (exponential waveform, maximum values) 1000.0 IPP(A ) Tj initial=25 C 100.0 10.0 8/20 s SMAJ188A SMAJ85A SMAJ40A SMAJ12A SMAJ24A 10/1000 s SMAJ5.0A 1.0 10 ms V CL(V) 0.1 1 4/10 10 Doc ID 5544 Rev 12 100 1000 SMAJ Characteristics Figure 6. 10000 Junction capacitance versus Figure 7. reverse applied voltage for unidirectional types (typical values) C(pF) Junction capacitance versus reverse applied voltage for bidirectional types (typical values) C(pF) 10000 F=1 MHz VOSC=30 mVRMS Tj=25 C F=1 MHz VOSC=30 mVRMS Tj=25 C SMAJ5.0A 1000 1000 SMAJ12A SMAJ5.0CA SMAJ12CA SMAJ24A SMAJ24CA SMAJ40A 100 100 SMAJ40CA SMAJ85A SMAJ85CA SMAJ188A VR(V) 10 10 Figure 8. 1.0E+02 100 1000 Peak forward voltage drop versus peak forward current (typical values) 1 10 Figure 9. IFM(A) SMAJ188CA VR(V) 10 1 100 1000 Relative variation of thermal impedance, junction to ambient, versus pulse duration Zth(j-a) / Rth(j-a) 1.00 Recommended pad layout PCB FR4, copper thickness = 35 m 1.0E+01 Tj =125 C Tj =25 C 1.0E+00 0.10 1.0E-01 VFM(V) 1.0E-02 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Figure 10. Thermal resistance, junction to ambient, versus copper surface under each lead 130 120 110 100 90 80 70 60 50 40 30 20 10 0 tP(s) 0.01 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 Figure 11. Leakage current versus junction temperature (typical values) Rth(j-a)(C/W) 1.E+03 IR(nA) PCB FR4, copper thickness = 35 m VR=VRM VRM < 10 V 1.E+02 1.E+01 1.E+00 VR=VRM VRM 10 V Tj(C) SCU(cm) 1.E-01 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 25 Doc ID 5544 Rev 12 50 75 100 125 150 5/10 Ordering information scheme 2 SMAJ Ordering information scheme Figure 12. Ordering information scheme SM Surface mount Peak pulse power A = 400 W Transil in SMA Stand off voltage 85 = 85 V Type A = Unidirectinal CA = Bidirectional Delivery mode TR = Tape and reel 6/10 Doc ID 5544 Rev 12 A J 85 CA - TR SMAJ 3 Package information Package information Case: JEDEC DO-214AC molded plastic over planar junction Terminals: solder plated, solderable per MIL-STD-750, Method 2026 Polarity: for unidirectional types the band indicates cathode. Flammability: epoxy is rated UL94V-0 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 4. 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 13. Footprint dimensions in mm (inches) 1.4 2.63 1.4 (0.055) (0.103) (0.055) Figure 14. Marking layout(1) Cathode bar ( unidirectional devices only ) e 1.64 (0.064) x x x z y ww e: ECOPACK compliance XXX: Marking Z: Manufacturing location Y: Year WW: week 5.43 (0.214) 1. Marking layout can vary according to assembly location. Doc ID 5544 Rev 12 7/10 Package information Table 5. SMAJ Marking Order code 8/10 Marking Order code Marking SMAJ5.0A-TR AE SMAJ5.0CA-TR AA SMAJ6.0A-TR DUB SMAJ6.0CA-TR DBB SMAJ6.5A-TR DUC SMAJ6.5CA-TR DBC SMAJ8.5A-TR DUH SMAJ8.5CA-TR DBH SMAJ10A-TR AX SMAJ10CA-TR AC SMAJ12A-TR DUK SMAJ12CA-TR DBK SMAJ13A-TR BG SMAJ13CA-TR BH SMAJ15A-TR BM SMAJ15CA-TR AJ SMAJ18A-TR DUQ SMAJ18CA-TR DBQ SMAJ20A-TR DUR SMAJ20CA-TR DBR SMAJ22A-TR DUS SMAJ22CA-TR DBS SMAJ24A-TR DUT SMAJ24CA-TR DBT SMAJ26A-TR DUU SMAJ26CA-TR DBU SMAJ28A-TR CG SMAJ28CA-TR CH SMAJ30A-TR CK SMAJ30CA-TR CL SMAJ33A-TR CM SMAJ33CA-TR CN SMAJ40A-TR DUZ SMAJ40CA-TR DBZ SMAJ43A-TR EUA SMAJ43CA-TR EBA SMAJ48A-TR CX SMAJ48CA-TR CY SMAJ58A-TR EUF SMAJ58CA-TR EBF SMAJ70A-TR EUI SMAJ70CA-TR EBI SMAJ85A-TR EUL SMAJ85CA-TR EBL SMAJ100A-TR EUN SMAJ100CA-TR EBN SMAJ130A-TR EUQ SMAJ130CA-TR EBQ SMAJ154A-TR EUT SMAJ154CA-TR EBT SMAJ170A-TR SR SMAJ170CA-TR SS SMAJ188A-TR EUV SMAJ188CA-TR EBV Doc ID 5544 Rev 12 SMAJ 4 Ordering information Ordering information Table 6. Ordering information Order code SMAJxxxA/CA-TR(1) Marking Package Weight Base qty Delivery mode See Table 5 on page 8 SMA 0.071 g 5000 Tape and reel 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 5 Revision history Table 7. Document revision history Date Revision Changes September-1998 5B 02-Aug-2004 6 SMA package dimensions update. Reference A1 max. changed from 2.70mm (0.106) to 2.03mm (0.080). 10-Dec-2004 7 Template layout update. No content change. 10-Feb-2006 8 Added unidirectional marking on cover page and Figure 14. Changed Figure 13. Foot print. 14-May-2009 9 Updated ECOPACK statement. Reformatted to current standards. 17-Sep-2009 10 Document updated for low leakage current. 05-Nov-2009 11 Corrected typographical error in Package information. 09-Jul-2010 12 Changed timescale in Figure 9. Previous update. 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