SMAT70A / SMBT70A Green 400W, 600W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR Please click here to visit our online spice models database. Features • • • • • • • • Mechanical Data • • 400, 600W Peak Pulse Power Dissipation 70V Standoff Voltage 100V Maximum Clamping Voltage - A requirement of many 48V Backplane Telecom Applications Glass Passivated Die Construction Fast Response Time: Typically less than 1 ps Lead Free Finish, RoHS Compliant (Note 4) Green Molding Compound (No Halogen and Antimony) (Note 5) Qualified to AEC-Q101 Standards for High Reliability Case: SMA / SMB Case Material: Molded Plastic. UL Flammability Classification Rating 94V-0 Moisture Sensitivity: Level 1 per J-STD-020D Terminals: Lead Free Plating (Matte Tin Finish). Solderable per MIL-STD-202, Method 208 Polarity Indicator: Cathode Band Marking Information: See Page 2 Ordering Information: See Page 2 Weight: SMA 0.064 grams (approximate) SMB 0.093 grams (approximate) • • • • • • Bottom View Top View Maximum Ratings @TA = 25°C unless otherwise specified Characteristic Peak Pulse Power Dissipation (Non repetitive current pulse derated above TA = 25° C) Peak Forward Surge Current, 8.3ms Single Half Sine Wave Superimposed on Rated Load (Note 2) Instantaneous Forward Voltage @ IPP = 35A (Note 2) Symbol SMAT70A SMBT70A Unit PPK 400 600 W IFSM 40 100 A 3.5 VF V Thermal Characteristics Characteristic Operating and Storage Temperature Range Electrical Characteristics Part Number Reverse Standoff Voltage VRWM (V) SMAT70A SMBT70A Notes: 1. 2. 3. 4. 5. 70 70 Value -55 to +150 Unit °C @TA = 25°C unless otherwise specified Breakdown Voltage VBR @ IT (Note 3) Min (V) 77.8 77.8 Symbol TJ, TSTG Max (V) 89.5 89.5 Test Current Max. Reverse Leakage @ VRWM Max. Clamping Voltage @ Ipp Max. Peak Pulse Current Ipp Typical Junction Capacitance (Note 3) Typical Voltage Temp. Variation of VBR IT (mA) IR (μA) VC (V) (A) (pF) mV/°C 1.0 1.0 5.0 5.0 100 100 3.5 5.3 140 290 80 80 Marking Code KEX NPX Measured with 8.3ms single half sine-wave. Duty cycle = 4 pulses per minute maximum. VBR measured with IT current pulse = 300μs. f = 1MHz, VR = 0VDC. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/quality/lead_free.html. Product manufactured with Data Code 0924 (week 24, 2009) and newer are built with Green Molding Compound. SMAT70A / SMBT70A Document number: DS30213 Rev. 10 - 2 1 of 4 www.diodes.com July 2009 © Diodes Incorporated SMAT70A / SMBT70A IPP, PEAK PULSE CURRENT (%Ipp) PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT 100 75 50 25 10 X 1000 Waveform as defined by REA tp 0 0 25 50 75 100 125 150 175 TA, AMBIENT TEMPERATURE (°C) Fig. 1 Pulse Derating Curve 200 t, TIME (ms) Fig. 2 Pulse Waveform 100 100 Non Repetitive Pulse Waveform Shown in Fig. 3 10 SMBT70A 1.0 0.1 0.1 SMAT70A 95 90 85 80 75 1.0 1,000 10 100 tp, PULSE WIDTH (µs) Fig. 3 Pulse Rating Curve Ordering Information Notes: VBR, BREAKDOWN VOLTAGE PD, PEAK PULSE POWER (kW) TJ = 25°C 50 100 125 150 25 75 TA, AMBIENT TEMPERATURE (°C) Fig. 4 Average Breakdown Voltage vs. Ambient Temperature 0 10,000 (Note 6) Part Number Case Packaging SMAT70A-13-F SMBT70A-13-F SMA SMB 5000/Tape & Reel 3000/Tape & Reel 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf. Marking Information YWW xxx SMAT70A / SMBT70A Document number: DS30213 Rev. 10 - 2 xxx = Product type marking code See Electrical Characteristics Table = Manufacturers’ code marking YWW = Date code marking Y = Last digit of year ex: 2 for 2002 WW = Week code 01 to 52 2 of 4 www.diodes.com July 2009 © Diodes Incorporated SMAT70A / SMBT70A Package Outline Dimensions B A C D J SMA Dim Min Max A 2.29 2.92 B 4.00 4.60 C 1.27 1.63 D 0.15 0.31 E 4.80 5.59 G 0.05 0.20 H 0.76 1.52 J 2.01 2.30 All Dimensions in mm SMB Dim Min Max A 3.30 3.94 B 4.06 4.57 C 1.96 2.21 D 0.15 0.31 E 5.00 5.59 G 0.05 0.20 H 0.76 1.52 J 2.00 2.62 All Dimensions in mm G H E Suggested Pad Layout C SMA Dimensions Z G X Y C Value (in mm) 6.5 1.5 1.7 2.5 4.0 X Y G Z SMAT70A / SMBT70A Document number: DS30213 Rev. 10 - 2 SMB Dimensions Z G X Y C 3 of 4 www.diodes.com Value (in mm) 6.7 1.8 2.3 2.5 4.3 July 2009 © Diodes Incorporated SMAT70A / SMBT70A IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 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