TVS Diodes Surface Mount > 600W > SZ1SMB Series SZ1SMB Series RoHS Pb e3 Description The SZ1SMB series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping and high surge capability, as well as fast response time. The SZ1SMB series is supplied in the Littelfuse exclusive, cost-effective, highly reliable package and is ideallysuited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial and consumer applications. Bi-directional Uni-directional Features * Zener Transient Overvoltage Suppressors Agency Approvals Agency Agency File Number E128662 Maximum Ratings and Thermal Characteristics Parameter Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms DC Power Dissipation @ TL = 75C Measured Zero Lead Length(Note 2) Derate Above 75C Thermal Resistance from Junction-to-Lead Symbol Value Unit PPK 600 W PD RJL 3.0 40 25 W mW/C C/W DC Power Dissipation(Note 3) @ TA = 25C Derate Above 25C Thermal Resistance from Junction-to- Ambient PD RJA 0.55 4.4 226 W mW/C C/W Forward Surge Current (Note 4) @ TA = 25C IFSM 100 A Operating and Storage Temperature Range TJ Tstg -65 to +150 C Stresses exceeding those listed in the Maximum Ratings table may damage the componant. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. 10/1000 s, non-repetitive. 2. 1" square copper pad, FR-4 board. 3. FR-4 board, using Littelfuse minimum recommended footprint 4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum - For Unidirectional only. * Working Peak Reverse Voltage Range - 5.0 V to 170 V for uni-directional, and 10 V to 75 V for bi-directional * Standard Avalanche Breakdown Voltage Range -6.4 V to 209 V for uni-directional, 11.1 V to 92.07 V for bi-directional * Peak Power - 600 W @ 1.0 ms * ESD Rating of Class 3 (> 16 kV) per Human Body Model * Maximum Clamp Voltage @ Peak Pulse Current * Low Leakage < 5.0 A Above 10 V * Intended for UL 497B Type Protection * Response Time is Typically < 1.0 ns * Pb-free means 2nd level interconnect is Pb-free and the terminal finish material is tin(Sn) (IPC/ JEDEC J-STD-609A.01) * SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q101 Qualified and PPAP Capable Additional Information Datasheet Resources Samples Functional Diagram Bi-directional Cathode Anode Uni-directional (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series I-V Curve Characteristics (TA = 25C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 5) = 30 A) For Uni-directional Uni-directional Symbol IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR VBR Vc VBR VR V IR V F IT Parameter Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM Breakdown Voltage @ IT IT Breakdown Current VF Forward Voltage @ IF IF Forward Current 5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, non-repetitive duty cycle. Ipp I-V Curve Characteristics (T A = 25C unless otherwise noted) For Bi-directional Bi-directional Symbol Ipp Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR Vc VBR VR IT IR VBR IR IT VR VBR Vc V Parameter IPP IT Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM Breakdown Voltage @ IT On-State Current Ipp (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series Electrical Characteristics - For Uni-directional Device Device Marking VRWM (Note 6) VC @ IPP Breakdown Voltage IR @ VRWM VBR @ IT (V) (Note 8) Capacitance (Typical)(Note 9) @ IT VC IPP Volts A Min Nom Max mA Volts Amps pF (Note 7) SZ1SMB5.0AT3G KE 5.0 800 6.40 6.70 7.00 10 9.2 65.2 2700 SZ1SMB6.0AT3G KG 6.0 800 6.67 7.02 7.37 10 10.3 58.3 2300 SZ1SMB6.5AT3G KK 6.5 500 7.22 7.60 7.98 10 11.2 53.6 2140 SZ1SMB7.0AT3G KM 7.0 500 7.78 8.19 8.60 10 12.0 50.0 2005 1890 SZ1SMB7.5AT3G KP 7.5 100 8.33 8.77 9.21 1.0 12.9 46.5 SZ1SMB8.0AT3G KR 8.0 50 8.89 9.36 9.83 1.0 13.6 44.1 1780 SZ1SMB8.5AT3G KT 8.5 10 9.44 9.92 10.40 1.0 14.4 41.7 1690 SZ1SMB9.0AT3G KV 9.0 5.0 10.00 10.55 11.10 1.0 15.4 39.0 1605 SZ1SMB10AT3G KX 10 5.0 11.10 11.70 12.30 1.0 17.0 35.3 1460 SZ1SMB11AT3G KZ 11 5.0 12.20 12.85 13.50 1.0 18.2 33.0 1345 SZ1SMB12AT3G LE 12 5.0 13.30 14.00 14.70 1.0 19.9 30.2 1245 SZ1SMB13AT3G LG 13 5.0 14.40 15.15 15.90 1.0 21.5 27.9 1160 SZ1SMB14AT3G LK 14 5.0 15.60 16.40 17.20 1.0 23.2 25.8 1085 SZ1SMB15AT3G LM 15 5.0 16.70 17.60 18.50 1.0 24.4 24.0 1020 SZ1SMB16AT3G LP 16 5.0 17.80 18.75 19.70 1.0 26.0 23.1 965 SZ1SMB17AT3G LR 17 5.0 18.90 19.90 20.90 1.0 27.6 21.7 915 SZ1SMB18AT3G LT 18 5.0 20.00 21.05 22.10 1.0 29.2 20.5 870 SZ1SMB20AT3G LV 20 5.0 22.20 23.35 24.50 1.0 32.4 18.5 790 SZ1SMB22AT3G LX 22 5.0 24.40 25.65 26.90 1.0 35.5 16.9 730 SZ1SMB24AT3G LZ 24 5.0 26.70 28.10 29.50 1.0 38.9 15.4 675 SZ1SMB26AT3G ME 26 5.0 28.90 30.40 31.90 1.0 42.1 14.2 630 SZ1SMB28AT3G MG 28 5.0 31.10 32.75 34.40 1.0 45.4 13.2 590 SZ1SMB30AT3G MK 30 5.0 33.30 35.05 36.80 1.0 48.4 12.4 555 SZ1SMB33AT3G MM 33 5.0 36.70 38.65 40.60 1.0 53.3 11.3 510 SZ1SMB36AT3G MP 36 5.0 40.00 42.10 44.20 1.0 58.1 10.3 470 SZ1SMB40AT3G MR 40 5.0 44.40 46.75 49.10 1.0 64.5 9.3 430 SZ1SMB43AT3G MT 43 5.0 47.80 50.30 52.80 1.0 69.4 8.6 400 SZ1SMB45AT3G MV 45 5.0 50.00 52.65 55.30 1.0 72.7 8.3 385 SZ1SMB48AT3G MX 48 5.0 53.30 56.10 58.90 1.0 77.4 7.7 365 SZ1SMB51AT3G MZ 51 5.0 56.70 59.70 62.70 1.0 82.4 7.3 345 SZ1SMB54AT3G NE 54 5.0 60.00 63.15 66.30 1.0 87.1 6.9 330 SZ1SMB58AT3G NG 58 5.0 64.40 67.80 71.20 1.0 93.6 6.4 310 SZ1SMB60AT3G NK 60 5.0 66.70 70.20 73.70 1.0 96.8 6.2 300 SZ1SMB64AT3G NM 64 5.0 71.10 74.85 78.60 1.0 103 5.8 280 SZ1SMB70AT3G NP 70 5.0 77.80 81.90 86.00 1.0 113 5.3 260 SZ1SMB75AT3G NR 75 5.0 83.30 87.70 92.10 1.0 121 4.9 245 SZ1SMB85AT3G NV 85 55.0 94.40 99.20 104.00 1.0 137 4.4 220 SZ1SMB90AT3G NX 90 5.0 100.00 105.50 111.00 1.0 146 4.1 210 SZ1SMB100AT3G NZ 100 5.0 111.00 117.00 123.00 1.0 162 3.7 190 SZ1SMB110AT3G PE 110 5.0 122.00 128.50 135.00 1.0 177 3.4 175 SZ1SMB120AT3G PG 120 5.0 133.00 140.00 147.00 1.0 193 3.1 160 SZ1SMB130AT3G PK 130 5.0 144.00 151.50 159.00 1.0 209 2.9 150 SZ1SMB150AT3G PM 150 5.0 167.00 176.00 185.00 1.0 243 2.5 135 SZ1SMB160AT3G PP 160 5.0 178.00 187.50 197.00 1.0 259 2.3 125 SZ1SMB170AT3G PR 170 5.0 189.00 199.00 209.00 1.0 275 2.2 120 (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series Electrical Characteristics - For Bi-directional VRWM (Note 8) Device Device Marking Volts A MIN NOM SZ1SMB10CAT3G KXC 10 5.0 11.1 11.69 SZ1SMB11CAT3G KZC 11 5.0 12.2 12.84 SZ1SMB12CAT3G LEC 12 5.0 13.3 SZ1SMB13CAT3G LGC 13 5.0 SZ1SMB14CAT3G LKC 14 SZ1SMB15CAT3G LMC SZ1SMB16CAT3G LPC SZ1SMB17CAT3G SZ1SMB18CAT3G (Note 6) VC @ IPP Breakdown Voltage IR @ VRWM VBR @ IT (V) (Note 7) @ IT VC IPP MAX mA Volts Amps 12.27 1.0 17.0 35.3 13.5 1.0 18.2 33.0 14.00 14.7 1.0 19.9 30.2 14.4 15.16 15.9 1.0 21.5 27.9 5.0 15.6 16.42 17.2 1.0 23.2 25.8 15 5.0 16.7 17.58 18.5 1.0 24.4 24.0 16 5.0 17.8 18.74 19.7 1.0 26.0 23.1 LRC 17 5.0 18.9 19.90 20.9 1.0 27.6 21.7 LTC 18 5.0 20.0 21.06 22.1 1.0 29.2 20.5 SZ1SMB20CAT3G LVC 20 5.0 22.2 23.37 24.5 1.0 32.4 18.5 SZ1SMB22CAT3G LXC 22 5.0 24.4 25.69 27.0 1.0 35.5 16.9 SZ1SMB24CAT3G LZC 24 5.0 26.7 28.11 29.5 1.0 38.9 15.4 SZ1SMB26CAT3G MEC 26 5.0 28.9 30.42 31.9 1.0 42.1 14.2 SZ1SMB28CAT3G MGC 28 5.0 31.1 32.74 34.4 1.0 45.4 13.2 SZ1SMB30CAT3G MKC 30 5.0 33.3 35.06 36.8 1.0 48.4 12.4 SZ1SMB33CAT3G MMC 33 5.0 36.7 38.63 40.6 1.0 53.3 11.3 SZ1SMB36CAT3G MPC 36 5.0 40.0 42.11 44.2 1.0 58.1 10.3 SZ1SMB40CAT3G MRC 40 5.0 44.4 46.74 49.1 1.0 64.5 9.3 SZ1SMB43CAT3G MTC 43 5.0 47.8 50.32 52.8 1.0 69.4 8.6 SZ1SMB45CAT3G MVC 45 5.0 50.0 52.63 55.3 1.0 72.2 8.3 SZ1SMB48CAT3G MXC 48 5.0 53.3 56.11 58.9 1.0 77.4 7.7 SZ1SMB51CAT3G MZC 51 5.0 56.7 59.69 62.7 1.0 82.4 7.3 SZ1SMB54CAT3G NEC 54 5.0 60.0 63.16 66.32 1.0 87.1 6.9 SZ1SMB58CAT3G NGC 58 5.0 64.4 67.79 71.18 1.0 93.6 6.4 SZ1SMB60CAT3G NKC 60 5.0 66.7 70.21 73.72 1.0 96.8 6.2 SZ1SMB64CAT3G NMC 64 5.0 71.1 74.84 78.58 1.0 103 5.8 SZ1SMB75CAT3G NRC 75 5.0 83.3 91.65 92.07 1.0 121 4.9 6. A transient suppressor is normally selected according to the 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 25C. 8. Surge current waveform per Figure 1 and derate per Figure 3 of the General Data - 600 Watt at the beginning of this group. 9. Bias Voltage = 0 V, F = 1 MHz, TJ = 25C (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series Ratings and Characteristic Curves Figure 2. Pulse Waveform Figure 1. Pulse Rating Curve Pulse Width (tP) is defined as that point where the peak current decays to 50% of IPP 100.0 tr 10s Ppk, Peak Power (KW) Non-Repetitive Pulse Waveform Peak Value . IPP Value (%) 10.0 1.0 Half Value . IPP 2 tP 0.1 0.0001 0.001 0.01 0.1 1 10 tp, Pulse Width(ms) t, Time (ms) Figure 4. Typical Junction Capacitance vs. Bias Voltage Figure 3. Surge Derating Curve 10,000 10/1000 WAVEFORM 100 C, Capacitance (pF) Peak Pulse Derating in % of Peak Current 120 80 60 40 20 0 0 25 50 75 100 125 150 TJ = 25C F = 1 MHz SZ1SMB5.0AT3G 1,000 SZ1SMB10AT3G 100 SZ1SMB48AT3G SZ1SMB170AT3G 10 175 1 TA Ambient Temperature(C) 1 100 10 100 Bias Voltage (Volts) Figure 5. Typical Junction Capacitance vs. Bias Voltage Figure 6. Typical Protection Circuit 1,000 C, Capacitance (pF) SZ1SMB10CAT3G SZ1SMB18CAT3G 100 Zin SZ1SMB48CAT3G SZ1SMB75CAT3G 10 Vin Load VL TJ = 25C F = 1 MHz 1 1 10 Bias Voltage (Volts) 100 (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series Soldering Parameters Lead-free assembly Pre Heat - Temperature Min (Ts(min)) 150C - Temperature Max (Ts(max)) 200C - Time (min to max) (ts) 60 - 120 secs Average ramp up rate (Liquidus Temp (TL) to peak 3C/second max TS(max) to TL - Ramp-up Rate 3C/second max 217C - Temperature (TL) (Liquidus) Reflow 60 - 150 seconds - Time (min to max) (tL) Peak Temperature (TP) 260+0/-5 C Time within 5C of actual peak Temperature (tp) 30 seconds max Ramp-down Rate 6C/second max Time 25C to peak Temperature (TP) 8 minutes max. Do not exceed 260C Polarity 0.00326 ounce, 0.1015 grams JEDEC DO214AA. Void-Free, Transfer-Molded, Thermosetting Plastic Epoxy Meets UL 94V-0 Color band denotes cathode for unidirectional components. Terminal Matte Tin-plated leads, Solderable per, JESD22-B102 Case Ramp-up TL Critical Zone TL to TP tL Ts(max) Ramp-down Ts(min) ts Preheat 25C t 25C to Peak Time (t) Environmental Specifications Physical Specifications Weight tp TP Temperature (T) Reflow Condition High Temp. Storage JESD22-A103 HTRB JESD22-A108 Temperature Cycling JESD22-A104 MSL JEDEC-J-STD-020, Level 1 H3TRB JESD22-A101 RSH JESD22-A111 Soldering Footprint Dimensions HE 2.261 0.089 E b D 2.743 0.108 2.159 0.085 A L Dim L1 Sacle 8:1 A1 C Inches Millimeters Min Nom Max Min Nom Max A 0.077 0.091 0.097 1.95 2.30 2.47 A1 0.002 0.004 0.008 0.05 0.10 0.20 b 0.077 0.080 0.087 1.96 2.03 2.20 c 0.006 0.009 0.012 0.15 0.23 0.31 D 0.130 0.140 0.156 3.30 3.56 3.95 E 0.160 0.170 0.181 4.06 4.32 4.60 HE 0.205 0.214 0.220 5.21 5.44 5.60 L 0.030 0.040 0.063 0.76 1.02 1.60 L1 0.51 REF mm ( Inches ) Ordering Information Device Package Shipping SZ1SMBxxAT3G SMB (Pb-Free) 2,500 / Tape & Reel SZ1SMBxxCAT3G SMB (Pb-Free) 2,500 / Tape & Reel 0.020 REF (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21 TVS Diodes Surface Mount > 600W > SZ1SMB Series Part Marking System 1 Cathode Part Numbering System LF XXXX YMAWW SZ 1SMB xx CA T3 G 2 Anode Pb Free Plating Tape/Reel Designator XXXX Y M A WW =Device Code (max four digits) =Year =Month =Assembly Location =Lot Code Type Code A Uni Directional TVS CA Bi Directional TVS SMB TVS VR VOLTAGE Zener Automotive Tape and Reel Specification 0.157 (4.0) Cathode mark for uni-directional components 0.47 (12.0) 0.315 (8.0) 0.061 DIA (1.55) Cover tape 13.0 (330) 0.80 (20.2) Arbor Hole Dia. 0.52 (13.3) Dimensions are in inches (and millimeters). Direction of Feed 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 http://www.littelfuse.com/disclaimer-electronics. (c) 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 01/08/21