1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series 600 Watt Peak Power Zener Transient Voltage Suppressors Littelfuse.com Unidirectional PLASTIC SURFACE MOUNT The SMB series is designed to protect voltage ZENER OVERVOLTAGE sensitive components from high voltage, high energy transients. TRANSIENT SUPPRESSORS They have excellent clamping capability, high surge capability, 5.0 V − 170 V, low zener impedance and fast response time. The SMB series is 600 W PEAK POWER supplied in the Littelfuse exclusive, cost-effective, highly reliable 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. SMB CASE 403A Features PLASTIC  Working Peak Reverse Voltage Range − 5.0 V to 170 V  Standard Zener Breakdown Voltage Range − 6.7 V to 199 V  Peak Power − 600 W @ 1.0 ms Cathode Anode  ESD Rating of Class 3 (> 16 kV) per Human Body Model MARKING DIAGRAM  Maximum Clamp Voltage @ Peak Pulse Current  Low Leakage < 5.0 (cid:2)A Above 10 V  UL 497B for Isolated Loop Circuit Protection AYWW  Response Time is Typically < 1.0 ns xx(cid:2) (cid:2)  SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable A = Assembly Location  Pb−Free Packages are Available Y = Year WW = Work Week xx = Device Code (Refer to page 3) Mechanical Characteristics (cid:2) = Pb−Free Package CASE: Void-free, transfer-molded, thermosetting plastic (Note: Microdot may be in either location) FINISH: All external surfaces are corrosion resistant and leads are readily solderable ORDERING INFORMATION MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260C for 10 Seconds Device Package Shipping LEADS: Modified L−Bend providing more contact area to bond pads 1SMBxxxAT3G SMB 2,500 / POLARITY: Cathode indicated by polarity band (Pb−Free) Tape & Reel MOUNTING POSITION: Any SZ1SMBxxxAT3G SMB 2,500 / (Pb−Free) Tape & Reel DEVICE MARKING INFORMATION See specific marking information in the device marking column of the Electrical Characteristics table on page 3 of this data sheet. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 1 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms PPK 600 W DC Power Dissipation @ TL = 75C Measured Zero Lead Length (Note 2) PD 3.0 W Derate Above 75C 40 mW/C Thermal Resistance from Junction−to−Lead R(cid:3)JL 25 C/W DC Power Dissipation (Note 3) @ TA = 25C PD 0.55 W Derate Above 25C 4.4 mW/C Thermal Resistance from Junction−to−Ambient R(cid:3)JA 226 C/W Forward Surge Current (Note 4) @ TA = 25C IFSM 100 A Operating and Storage Temperature Range TJ, Tstg −65 to +150 C 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 (cid:2)s, non−repetitive. 2. 1 in square copper pad, FR−4 board. 3. FR−4 board, using minimum recommended footprint, as shown in 403A case outline dimensions spec. 4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. ELECTRICAL CHARACTERISTICS (TA = 25C unless I otherwise noted, VF = 3.5 V Max. @ IF (Note 5) = 30 A) IF Symbol Parameter IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM Working Peak Reverse Voltage VCVBRVRWM V IR VF IR Maximum Reverse Leakage Current @ VRWM IT VBR Breakdown Voltage @ IT IT Test Current IF Forward Current IPP VF Forward Voltage @ IF 5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, Uni−Directional TVS non−repetitive duty cycle. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 2 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series ELECTRICAL CHARACTERISTICS VRWM Breakdown Voltage VC @ IPP (Note 8) Ctyp Device (Note 6) IR @ VRWM VBR (Note 7) Volts @ IT VC IPP (Note 9) Device* Marking V (cid:2)A Min Nom Max mA V A pF 1SMB5.0AT3G KE 5.0 800 6.40 6.7 7.0 10 9.2 65.2 2700 1SMB6.0AT3G KG 6.0 800 6.67 7.02 7.37 10 10.3 58.3 2300 1SMB6.5AT3G KK 6.5 500 7.22 7.6 7.98 10 11.2 53.6 2140 1SMB7.0AT3G KM 7.0 500 7.78 8.19 8.6 10 12.0 50.0 2005 1SMB7.5AT3G KP 7.5 100 8.33 8.77 9.21 1.0 12.9 46.5 1890 1SMB8.0AT3G KR 8.0 50 8.89 9.36 9.83 1.0 13.6 44.1 1780 1SMB8.5AT3G KT 8.5 10 9.44 9.92 10.4 1.0 14.4 41.7 1690 1SMB9.0AT3G KV 9.0 5.0 10.0 10.55 11.1 1.0 15.4 39.0 1605 1SMB10AT3G KX 10 5.0 11.1 11.7 12.3 1.0 17.0 35.3 1460 1SMB11AT3G KZ 11 5.0 12.2 12.85 13.5 1.0 18.2 33.0 1345 1SMB12AT3G LE 12 5.0 13.3 14 14.7 1.0 19.9 30.2 1245 1SMB13AT3G LG 13 5.0 14.4 15.15 15.9 1.0 21.5 27.9 1160 1SMB14AT3G LK 14 5.0 15.6 16.4 17.2 1.0 23.2 25.8 1085 1SMB15AT3G LM 15 5.0 16.7 17.6 18.5 1.0 24.4 24.0 1020 1SMB16AT3G LP 16 5.0 17.8 18.75 19.7 1.0 26.0 23.1 965 1SMB17AT3G LR 17 5.0 18.9 19.9 20.9 1.0 27.6 21.7 915 1SMB18AT3G LT 18 5.0 20.0 21.05 22.1 1.0 29.2 20.5 870 1SMB20AT3G LV 20 5.0 22.2 23.35 24.5 1.0 32.4 18.5 790 1SMB22AT3G LX 22 5.0 24.4 25.65 26.9 1.0 35.5 16.9 730 1SMB24AT3G LZ 24 5.0 26.7 28.1 29.5 1.0 38.9 15.4 675 1SMB26AT3G ME 26 5.0 28.9 30.4 31.9 1.0 42.1 14.2 630 1SMB28AT3G MG 28 5.0 31.1 32.75 34.4 1.0 45.4 13.2 590 1SMB30AT3G MK 30 5.0 33.3 35.05 36.8 1.0 48.4 12.4 555 1SMB33AT3G MM 33 5.0 36.7 38.65 40.6 1.0 53.3 11.3 510 1SMB36AT3G MP 36 5.0 40.0 42.1 44.2 1.0 58.1 10.3 470 1SMB40AT3G MR 40 5.0 44.4 46.75 49.1 1.0 64.5 9.3 430 1SMB43AT3G MT 43 5.0 47.8 50.3 52.8 1.0 69.4 8.6 400 1SMB45AT3G MV 45 5.0 50.0 52.65 55.3 1.0 72.7 8.3 385 1SMB48AT3G MX 48 5.0 53.3 56.1 58.9 1.0 77.4 7.7 365 1SMB51AT3G MZ 51 5.0 56.7 59.7 62.7 1.0 82.4 7.3 345 1SMB54AT3G NE 54 5.0 60.0 63.15 66.3 1.0 87.1 6.9 330 1SMB58AT3G NG 58 5.0 64.4 67.8 71.2 1.0 93.6 6.4 310 1SMB60AT3G NK 60 5.0 66.7 70.2 73.7 1.0 96.8 6.2 300 1SMB64AT3G NM 64 5.0 71.1 74.85 78.6 1.0 103 5.8 280 1SMB70AT3G NP 70 5.0 77.8 81.9 86 1.0 113 5.3 260 1SMB75AT3G NR 75 5.0 83.3 87.7 92.1 1.0 121 4.9 245 1SMB85AT3G NV 85 55.0 94.4 99.2 104 1.0 137 4.4 220 1SMB90AT3G NX 90 5.0 100 105.5 111 1.0 146 4.1 210 1SMB100AT3G NZ 100 5.0 111 117 123 1.0 162 3.7 190 1SMB110AT3G PE 110 5.0 122 128.5 135 1.0 177 3.4 175 1SMB120AT3G PG 120 5.0 133 140 147 1.0 193 3.1 160 1SMB130AT3G PK 130 5.0 144 151.5 159 1.0 209 2.9 150 1SMB150AT3G PM 150 5.0 167 176 185 1.0 243 2.5 135 1SMB160AT3G PP 160 5.0 178 187.5 197 1.0 259 2.3 125 1SMB170AT3G PR 170 5.0 189 199 209 1.0 275 2.2 120 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 25C. 8. Surge current waveform per Figure 2 and derate per Figure 4 of the General Data − 600 W at the beginning of this group. 9. Bias Voltage = 0 V, F = 1 MHz, TJ = 25C †Please see 1SMB10CAT3 to 1SMB78CAT3 for Bidirectional devices. *Include SZ-prefix devices where applicable. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 3 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series 100 PULSE WIDTH (tP) IS DEFINED AS W) NPUOLNSREE WPEATVIETFIVOERM tr(cid:2) 10 (cid:2)s TCHUARTR PEONTIN DTE WCHAEYRS ET OTH 5E0 %PE OAFK R (k SHOWN IN FIGURE 2 100 IPP. OWE 10 %) PEAK VALUE - IPP P E ( AK ALU HALF VALUE - IPP E V 2 P 50 , K 1 P P tP 0.1 0 0.1 (cid:2)s 1 (cid:2)s 10 (cid:2)s 100 (cid:2)s 1 ms 10 ms 0 1 2 3 4 5 tP, PULSE WIDTH t, TIME (ms) Figure 1. Pulse Rating Curve Figure 2. Pulse Waveform 160 10,000 5C 140 TJ = 25C OF= 2 1SMB5.0AT3G f = 1 MHz TING IN % RENT @ TA 112000 E (pF)1000 1SMB10AT3G PEAK PULSE DERAK POWER OR CUR 864000 C, CAPACITANC 11000 1SMB14S8MATB31G70AT3G A 20 E P 0 1 0 25 50 75 100 125 150 1 10 100 1000 TA, AMBIENT TEMPERATURE (C) BIAS VOLTAGE (VOLTS) Figure 3. Pulse Derating Curve Figure 4. Typical Junction Capacitance vs. Bias Voltage Zin Vin LOAD VL Figure 5. Typical Protection Circuit Specifications subject to change without notice. © 2016 Littelfuse, Inc. 4 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series APPLICATION NOTES Response Time minimum lead lengths and placing the suppressor device as In most applications, the transient suppressor device is close as possible to the equipment or components to be placed in parallel with the equipment or component to be protected will minimize this overshoot. protected. In this situation, there is a time delay associated Some input impedance represented by Z is essential to in with the capacitance of the device and an overshoot prevent overstress of the protection device. This impedance condition associated with the inductance of the device and should be as high as possible, without restricting the circuit the inductance of the connection method. The capacitive operation. effect is of minor importance in the parallel protection scheme because it only produces a time delay in the Duty Cycle Derating transition from the operating voltage to the clamp voltage as The data of Figure 1 applies for non-repetitive conditions shown in Figure 6. and at a lead temperature of 25C. If the duty cycle increases, The inductive effects in the device are due to actual the peak power must be reduced as indicated by the curves turn-on time (time required for the device to go from zero of Figure 8. Average power must be derated as the lead or current to full current) and lead inductance. This inductive ambient temperature rises above 25C. The average power effect produces an overshoot in the voltage across the derating curve normally given on data sheets may be equipment or component being protected as shown in normalized and used for this purpose. Figure 7. Minimizing this overshoot is very important in the At first glance the derating curves of Figure 8 appear to be application, since the main purpose for adding a transient in error as the 10 ms pulse has a higher derating factor than suppressor is to clamp voltage spikes. The SMB series have the 10 (cid:2)s pulse. However, when the derating factor for a a very good response time, typically < 1.0 ns and negligible given pulse of Figure 8 is multiplied by the peak power inductance. However, external inductive effects could value of Figure 1 for the same pulse, the results follow the produce unacceptable overshoot. Proper circuit layout, expected trend. Vin (TRANSIENT) OVERSHOOT DUE TO V Vin (TRANSIENT) V INDUCTIVE EFFECTS VL VL Vin td tD = TIME DELAY DUE TO CAPACITIVE EFFECT t t Figure 6. Figure 7. 1 0.7 0.5 R 0.3 O CT 0.2 A PULSE WIDTH F G 0.1 10 ms N TI 0.07 A R 0.05 E 1 ms D 0.03 0.02 100 (cid:2)s 10 (cid:2)s 0.01 0.1 0.2 0.5 1 2 5 10 20 50 100 D, DUTY CYCLE (%) Figure 8. Typical Derating Factor for Duty Cycle Specifications subject to change without notice. © 2016 Littelfuse, Inc. 5 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series UL RECOGNITION The entire series has Underwriters Laboratory including Strike Voltage Breakdown test, Endurance Recognition for the classification of protectors (QVGQ2) Conditioning, Temperature test, Dielectric under the UL standard for safety 497B and File #E128662. Voltage-Withstand test, Discharge test and several more. Many competitors only have one or two devices recognized Whereas, some competitors have only passed a or have recognition in a non-protective category. Some flammability test for the package material, we have been competitors have no recognition at all. With the UL497B recognized for much more to be included in their Protector recognition, our parts successfully passed several tests category. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 6 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D

1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series PACKAGE DIMENSIONS SMB CASE 403A−03 ISSUE H HE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. E 2. CONTROLLING DIMENSION: INCH. 3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P. MILLIMETERS INCHES DIM MIN NOM MAX MIN NOM MAX A 1.90 2.20 2.28 0.075 0.087 0.090 b D A1 0.05 0.10 0.19 0.002 0.004 0.007 b 1.96 2.03 2.20 0.077 0.080 0.087 c 0.15 0.23 0.31 0.006 0.009 0.012 DD 3.30 3.56 3.95 0.130 0.140 0.156 E 4.06 4.32 4.60 0.160 0.170 0.181 POOPLTAIORNITAYL IANSD INCEAETDOERD HE 5.21 5.44 5.60 0.205 0.214 0.220 L 0.76 1.02 1.60 0.030 0.040 0.063 L1 0.51 REF 0.020 REF A A1 L L1 c SOLDERING FOOTPRINT 2.261 0.089 2.743 0.108 2.159 (cid:2) (cid:3) 0.085 mm SCALE 8:1 inches 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 shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation.  Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation.  Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation.  The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Littelfuse.com Specifications subject to change without notice. © 2016 Littelfuse, Inc. 7 Publication Order Number: September 19, 2016 − Rev. 13 1SMB5.0AT3/D