1.5SMC33AT3G

TVS Diodes Surface Mount > 1500W > 1.5SMC6.8AT3G 1.5SMC6.8AT3G Pb Description The 1.5SMC6.8AT3G series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The 1.5SMC6.8AT3G series is supplied in the exclusive, cost-effective, highly reliable Littelfuse package and is ideally suited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications. Features • Working Peak Reverse Voltage Range − 5.0 V to 78 V Maximum Ratings and Thermal Characteristics Parameter • Standard Zener Breakdown Voltage Range − Symbol Value Unit Peak Power Dissipation (Note 1) @ TL = 25°C, Pulse Width = 1 ms PPK 1500 W DC Power Dissipation @ TL = 75°C Measured Zero Lead Length (Note 2) PD 4.0 W 54.6 mW/°C °C/W 6.7 V to 91.25 V • Peak Power − 1500 W @ 1 ms • ESD Rating of Class 3 (> 16 KV) per Human Body Model • Maximum Clamp Voltage @ Peak Pulse Current Derate Above 75°C Thermal Resistance from Junction−to− Lead RJL 18.3 DC Power Dissipation (Note 3) @ TA = PD 0.75 W 6.1 mW/°C 165 °C/W 25°C Derate Above 25°C Thermal Resistance from Junction–to– Ambient R0JA • Low Leakage < 5 µA Above 10 V • UL 497B for Isolated Loop Circuit Protection • Maximum Temperature Coefficient Specified • Response Time is Typically < 1 ns Bi-directional • Pb−Free Packages are Available Functional Diagram Forward Surge Current (Note 4) @ TA = 25°C Operating and Storage Temperature Range IFSM 200 A C Cathode TJ, Tstg -65 to +150 Anode °C Additional Information Uni-directional Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. 10 x 1000 µs, non−repetitive. 2. 1 in square copper pad, FR−4 board. Datasheet Resources Samples 3. FR−4 board, using Littelfuse minimum recommended footprint, as shown in 403-03 case outline dimensions spec. 4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 TVS Diodes Surface Mount > 1500W > 1.5SMC6.8AT3G I-V Curve Characteristics (TA = 25°C unless otherwise noted, VF = 3.5 V Max @ IF = 100 A) (Note 5) Symbol I V Parameter IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM Working Peak Reverse Voltage IR Maximum Reverse Leakage Current @ VRWM VBR Breakdown Voltage @ IT IT Test Current IF Forward Current VF Forward Voltage @ IF VF Forward Voltage @ IF 5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, non−repetitive duty cycle. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 TVS Diodes Surface Mount > 1500W > 1.5SMC6.8AT3G Electrical Characteristics Device* (TA = 25°C unless otherwise noted) Device Marking Breakdown Voltage V RWM (Note 6) IR @ VRWM Volts µA MIN NOM VBR (V) (Note 7) VC @ IPP (Note 8) MV BR @ IT VC IPP MAX mA Volts Amps %/ C 1.5SMC6.8AT3G 6V8A 5.8 1000 6.45 6.8 7.14 10 10.5 143 0.057 1.5SMC7.5AT3G 7V5A 6.4 500 7.13 7.5 7.88 10 11.3 132 0.061 1.5SMC8.2AT3G 8V2A 7.02 200 7.79 8.2 8.61 10 12.1 124 0.065 1.5SMC10AT3G 10A 8.55 10 9.5 10 10.5 1 14.5 103 0.073 1.5SMC12AT3G 12A 10.2 5 11.4 12 12.6 1 16.7 90 0.078 1.5SMC13AT3G 13A 11.1 5 12.4 13 13.7 1 18.2 82 0.081 1.5SMC15AT3G 15A 12.8 5 14.3 15 15.8 1 21.2 71 0.084 1.5SMC16AT3G 16A 13.6 5 15.2 16 16.8 1 22.5 67 0.086 1.5SMC18AT3G 18A 15.3 5 17.1 18 18.9 1 25.2 59.5 0.088 1.5SMC20AT3G 20A 17.1 5 19 20 21 1 27.7 54 0.09 1.5SMC22AT3G 22A 18.8 5 20.9 22 23.1 1 30.6 49 0.092 1.5SMC24AT3G 24A 20.5 5 22.8 24 25.2 1 33.2 45 0.094 1.5SMC27AT3G 27A 23.1 5 25.7 27 28.4 1 37.5 40 0.096 1.5SMC30AT3G 30A 25.6 5 28.5 30 31.5 1 41.4 36 0.097 1.5SMC33AT3G 33A 28.2 5 31.4 33 34.7 1 45.7 33 0.098 1.5SMC36AT3G 36A 30.8 5 34.2 36 37.8 1 49.9 30 0.099 1.5SMC39AT3G 39A 33.3 5 37.1 39 41 1 53.9 28 0.1 1.5SMC43AT3G 43A 36.8 5 40.9 43 45.2 1 59.3 25.3 0.101 1.5SMC47AT3G 47A 40.2 5 44.7 47 49.4 1 64.8 23.2 0.101 1.5SMC51AT3G 51A 43.6 5 48.5 51 53.6 1 70.1 21.4 0.102 1.5SMC56AT3G 56A 47.8 5 53.2 56 58.8 1 77 19.5 0.103 1.5SMC62AT3G 62A 53 5 58.9 62 65.1 1 85 17.7 0.104 1.5SMC68AT3G 68A 58.1 5 64.6 68 71.4 1 92 16.3 0.104 1.5SMC75AT3G 75A 64.1 5 71.3 75 78.8 1 103 14.6 0.105 1.5SMC82AT3G 82A 70.1 5 77.9 82 86.1 1 113 13.3 0.105 1.5SMC91AT3G 91A 77.8 5 86.5 91 95.5 1 125 12 0.106 6. A transient suppressor is normally selected according to the maximum working peak reverse voltage (VRWM), which should be equal to or greater than the DC or continuous peak operating voltage level. 7. VBR measured at pulse test current IT at an ambient temperature of 25°C. 8. Surge current waveform per Figure 2 and derate per Figure 3 of the General Data − 1500 Watt at the beginning of this group. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 TVS Diodes Surface Mount > 1500W > 1.5SMC6.8AT3G Ratings and Characteristic Curves Figure 1. Pulse Rating Curve Figure 2. Pulse Waveform 100 NONREPETITIVE PULSE WAVEFORM SHOWN IN FIGURE 2 PULSE WIDTH (tP) IS DEFINED AS THAT POINT WHERE THE PEAK CURRENT DECAYS TO 50% OF IPP. t ≤ 10 s 100 PEAK VALUE - IPP VALUE (%) 10 I HALF VALUE - PP 2 50 1 tP 0.1 0.1 s1 s1 0 s 0 100 s 1 ms 10 ms t Figure 3. Pulse Derating Curve Figure 4. Dynamic Impedance PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT @ TA = 25 C 160 ° 140 120 100 80 60 40 20 0 02 55 07 51 00 125 150 ° © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 TVS Diodes Surface Mount > 1500W > 1.5SMC6.8AT3G Dimensions Soldering Footrpint HE E bD D mm inches A L L1 c ORDERING INFORMATION A1 Device Dim Inches Millimeters Min Nom Max Min Nom Max A 0.075 0.084 0.095 1.90 2.13 2.41 A1 0.002 0.004 0.006 0.05 0.10 0.15 b 0.115 0.118 0.121 2.92 3.00 3.07 c 0.006 0.009 0.012 0.15 0.23 0.30 D 0.220 0.230 0.240 5.59 5.84 6.10 E 0.260 0.270 0.280 6.60 6.86 7.11 HE 0.305 0.313 0.320 7.75 7.94 8.13 L 0.030 0.040 0.050 0.76 1.02 1.27 L1 0.020 REF 0.51 REF 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 4. 403-01 THRU -02 OBSOLETE, NEW STANDARD 403-03. 2,500 / Tape & Reel Flow/Wave Soldering (Solder Dipping) Peak Temperature : 260OC Dipping Time : 10 seconds Physical Specifications Case Void-free, transfer-molded, thermosetting plastic Polarity Cathode indicated by polarity band Mounting Position Any Finish All external surfaces are corrosion resistant and leads are readily solderable Leads Modified L−Bend providing more contact area to bond pads 2. CONTROLLING DIMENSION: INCH. 3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P. Shipping† SMC (Pb−Free) 1SMCxxAT3G NOTES Part Marking System Package Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17