SMAJ

® SMAJ TRANSIL™ FEATURES ■ Peak Pulse Power : 400 W (10/1000µs) ■ Stand off voltage range: From 5V to 188V ■ Uni and Bidirectional types ■ Low clamping factor ■ Fast response time ■ JEDEC registered package outline DESCRIPTION The SMAJ series are TRANSILTM diodes designed specifically for protecting sensitive equipment against transient overvoltages. The SMA package allows save spacing on high density printed circuit boards. Transil diodes provide high overvoltage protection by clamping action. Their instantaneous response to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as MOS Technology and low voltage supplied IC’s. Table 2: Absolute Maximum Rating (Tamb = 25°C) Symbol PPP P IFSM Tstg Tj TL Parameter Peak pulse power dissipation (see note 1) Power dissipation on infinite heatsink Non repetitive surge peak forward current for unidirectional types Storage temperature range Maximum junction temperature Maximum lead temperature for soldering during 10 s. A K Unidirectional Bidirectional SMA (JEDEC DO-214AC) Table 1: Order Codes Part Number SMAJxxxA-TR SMAJxxxCA-TR Marking See page 2 See page 2 Value Tj initial = Tamb Tamb = 50°C tp = 10 ms Tj initial = Tamb 400 3.3 40 -65 to 175 150 260 Unit W W A °C °C Note 1: for a surge greater than the maximum values, the diode will fail in short-circuit. Table 3: Thermal Resistances Symbol Parameter Rth(j-l) Junction to leads Rth(j-a) Junction to ambient on printed circuit on recommended pad layout Value 30 120 Unit °C/W °C/W February 2006 REV. 8 1/6 SMAJ Table 4: Electrical Characteristics (Tamb = 25°C) Symbol VRM VBR VCL IRM IPP αT VF Parameter Stand-off voltage IF I I IPP Breakdown voltage Clamping voltage VCL VBR VRM VF IRM IR V Leakage current Peak pulse current Voltage temperature coefficient Forward voltage drop VCLVBR VRM IR IRM IRM IR V VRMVBR VCL IPP Unidirectional IPP Bidirectional IRM @ VRM VBR @ IR Types Unidirectional SMAJ5.0A-TR SMAJ6.0A-TR SMAJ6.5A-TR SMAJ8.5A-TR SMAJ10A-TR SMAJ12A-TR SMAJ13A-TR SMAJ15A-TR SMAJ18A-TR SMAJ20A-TR SMAJ22A-TR SMAJ24A-TR SMAJ26A-TR SMAJ28A-TR SMAJ30A-TR SMAJ33A-TR SMAJ40A-TR SMAJ43A-TR SMAJ48A-TR SMAJ58A-TR SMAJ70A-TR SMAJ85A-TR SMAJ100A-TR SMAJ130A-TR SMAJ154A-TR SMAJ170A-TR SMAJ188A-TR Note 2: Note 3: Note 4: VCL @ IPP VCL @ IPP αT max note3 C typ note4 pF 3500 3300 3100 2000 1550 1325 1200 975 800 725 625 600 575 510 480 450 370 350 320 270 230 200 170 145 125 120 110 max Mark. AA DBB DBC DBH AC DBK BH AJ DBQ DBR DBS DBT DBU CH CL CN DBZ EBA CY EBF EBI EBL EBN EBQ EBT SS EBV µA 800 800 500 10 5 5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 V 5.0 6.0 6.5 8.5 10 12 13 15 18 20 22 24 26 28 30 33 40 43 48 58 70 85 100 130 154 170 188 min note2 V 6.4 6.7 7.2 9.44 11.1 13.3 14.4 16.7 20 22.2 24.4 26.7 28.9 31.1 33.3 36.7 44.4 47.8 53.3 64.4 77.8 94.4 111 144 171 189 209 mA 10 10 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 max max 10/1000µs 8/20µs V 9.2 10.3 11.2 14.4 17 19.9 21.5 24.4 29.2 32.4 35.5 38.9 42.1 45.4 48.4 53.3 64.5 69.4 77.4 93.6 113 137 162 209 246 275 328 A 43.5 38.8 35.7 27.7 23.5 20.1 18.6 16.4 13.7 12.3 11.2 10.3 9.5 8.8 8.3 7.5 6.2 5.7 5.2 4.3 3.5 2.9 2.5 1.9 1.6 1.4 1.4 V 13.4 13.7 14.5 18.6 21.7 25.3 27.2 32.5 39.3 42.8 48.3 50 53.5 59 64.3 69.7 84 91 100 121 146 178 212 265 317 353 388 A Mark. AE DUB DUC DUH AX DUK BG BM DUQ DUR DUS DUT DUU CG CK CM DUZ EUA CX EUF EUI EUL EUN EUQ EUT SR EUV Bidirectional SMAJ5.0CA-TR SMAJ6.0CA-TR SMAJ6.5CA-TR SMAJ8.5CA-TR SMAJ10CA-TR SMAJ12CA-TR SMAJ13CA-TR SMAJ15CA-TR SMAJ18CA-TR SMAJ20CA-TR SMAJ22CA-TR SMAJ24CA-TR SMAJ26CA-TR SMAJ28CA-TR SMAJ30CA-TR SMAJ33CA-TR SMAJ40CA-TR SMAJ43CA-TR SMAJ48CA-TR SMAJ58CA-TR SMAJ70CA-TR SMAJ85CA-TR SMAJ100CA-TR SMAJ130CA-TR SMAJ154CA-TR SMAJ170CA-TR SMAJ188CA-TR 10-4/°C 174 5.7 170 5.9 160 6.1 124 7.3 106 7.8 91 8.3 85 8.4 71 8.8 59 9.2 54 9.4 48 9.6 46 9.6 43 9.7 39 9.8 36 9.9 33 10.0 27 10.1 25 10.2 23 10.3 19 10.4 16 10.5 13 10.6 11 10.7 9 10.8 7 10.8 6.5 10.8 6 10.8 ∆VBR = αT * (Tamb - 25) * VBR(25°C). VR = 0 V, F = 1 MHz. For bidirectional types, capacitance value is divided by 2. Pulse test : tp < 50 ms. 2/6 SMAJ Figure 1: Pulse waveform (10/1000µs) Figure 2: Peak power dissipation versus initial junction temperature 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 Ppp[Tj initial]/Ppp[Tj initial=25°C] Tj initial(°C) 0 25 50 75 100 125 150 175 Figure 3: Peak pulse power versus exponential pulse duration (Tj initial=25°C) Ppp(W) 5000 Figure 4: Clamping voltage versus peak pulse current (Tj initial=25°C) Exponential waveform tp=20ms & tp=1ms 200.0 100.0 Ipp(A) SMAJ5.0A,CA SMAJ13A,CA tp = 20 µs tp = 1 ms SMAJ26A,CA 1000 10.0 tp=1ms SMAJ58A,CA SMAJ188A,CA 1.0 tp(ms) 100 0.01 0.10 1.00 10.00 VCL(V) 0.1 1 10 100 500 Figure 5: Capacitance versus reverse applied voltage (typical values) (SMAJxxA) 5000 C(pF) F=1MHz SMAJ5.0A Figure 6: Capacitance versus reverse applied voltage (typical values) (SMAJxxCA) 2000 1000 C(pF) SMAJ5.0CA F=1MHz 1000 SMAJ13A SMAJ26A SMAJ58A SMAJ13CA 100 SMAJ26CA SMAJ58CA SMAJ188CA 100 SMAJ188A 10 VR(V) 10 1 10 100 200 1 1 VR(V) 10 100 200 3/6 SMAJ Figure 7: Peak forward voltage drop versus peak forward current (typical values) 10.00 IFM(A) Figure 8: Relative variation of thermal impedance junction to ambient versus pulse duration 1.00 Zth(j-a)/Rth(j-a) 1.00 Tj=125°C 0.10 0.10 Tj=25°C VFM(V) 0.01 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 0.01 1E-2 tp(s) 1E-1 1E+0 1E+1 1E+2 5E+2 Figure 9: Thermal resistance junction to ambient versus copper surface under each lead (printed circuit board FR4 e(Cu)=35µm) 140 130 120 110 100 90 80 70 60 50 40 Rth(j-a) (°C/W) Figure 10: Relative variation of leakage current versus junction temperature IR[Tj] / IR [Tj=25°C] 2E+3 1E+3 VBR ≥ 8.5V 1E+2 1E+1 1E+0 S(Cu)(cm²) 0 1 2 3 4 5 VBR < 8.5V Tj(°C) 1E-1 0 25 50 75 100 125 150 Figure 11: Ordering Information Scheme SM Surface Mount Peak Pulse Power A = 400 W Stand off voltage 85 = 85 V Type A = Unidirectinal CA = Bidirectional Packaging TR = Tape & reel A J 85 CA - TR 4/6 SMAJ Figure 12: SMA Package Mechanical Data E1 REF. Min. D DIMENSIONS Millimeters Max. 2.03 0.20 1.65 0.41 5.60 4.60 2.95 1.60 Inches Min. 0.075 0.002 0.049 0.006 0.189 0.156 0.089 0.030 Max. 0.080 0.008 0.065 0.016 0.220 0.181 0.116 0.063 A1 A2 b 1.90 0.05 1.25 0.15 4.80 3.95 2.25 0.75 E c E A1 E1 D b C L A2 L Figure 13: Foot print dimensions (millimeters) 1.73 1.48 1.73 Figure 14: Marking Cathode bar ( unidirectional devices only ) e3 1.67 4.94 xxx z y ww E : ECOPACK ( Leadfree ) mention XXX : Marking Z : Manufacturing location Y : Year WW : week In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Table 5: Ordering Information Part Number SMAJxxxA-TR SMAJxxxCA-TR Marking See page 2 See page 2 Package SMA SMA Weight 0.068 g 0.068 g Base qty 5000 5000 Delivery mode Tape & reel Tape & reel Table 6: Revision History Date September-1998 02-Aug-2004 10-Dec-2004 10-Feb-2006 Revision 5B 6 7 8 Description of Changes Previous update. SMA package dimensions update. Reference A1 max. changed from 2.70mm (0.106inc.) to 2.03mm (0.080). Template layout update. No content change. Added unidirectional marking on cover page and Figure 14. Changed Figure 13. Foot print. 5/6 SMAJ Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 6/6