1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series 1500 Watt Peak Power Zener Transient Voltage Suppressors .com Unidirectional* PLASTIC SURFACE MOUNT The SMC series is designed to protect voltage ZENER TRANSIENT sensitive components from high voltage, high energy transients. VOLTAGE SUPPRESSORS They have excellent clamping capability, high surge capability, 5.0−78 VOLTS low zener impedance and fast response time. The SMC series is 1500 WATT PEAK POWER supplied in 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. SMC CASE 403 PLASTIC Features • Working Peak Reverse Voltage Range − 5.0 V to 78 V • Standard Zener Breakdown Voltage Range − 6.7 V to 91.25 V • Peak Power − 1500 W @ 1 ms • MARKING DIAGRAM ESD Rating of Class 3 (>16 KV) per Human Body Model • Maximum Clamp Voltage @ Peak Pulse Current • Low Leakage < 5 A Above 10 V • UL 497B for Isolated Loop Circuit Protection • Maximum Temperature Coefficient Specified • Response Time is Typically < 1 ns • SZ Prefix for Automotive and Other Applications Requiring Unique • Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable • Pb−Free Packages are Available Mechanical Characteristics: CASE: Void-free, transfer-molded, thermosetting plastic ORDERING INFORMATION FINISH: All external surfaces are corrosion resistant and leads are readily solderable Device Package Shipping MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260ºC for 10 Seconds LEADS: Modified L−Bend providing more contact area to bond pads POLARITY: Cathode indicated by molded polarity bend MOUNTING POSITION: Any DEVICE MARKING INFORMATION Specifications subject to change without notice. © 2016 Littelfuse, Inc. 1 September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms PPK 1500 W DC Power Dissipation @ TL = 75C PD 4.0 W Measured Zero Lead Length (Note 2) Derate Above 75C 54.6 mW/C Thermal Resistance from Junction−to−Lead R(cid:3)JL 18.3 C/W DC Power Dissipation (Note 3) @ TA = 25C PD 0.75 W Derate Above 25C 6.1 mW/C Thermal Resistance from Junction−to−Ambient R(cid:3)JA 165 C/W Forward Surge Current (Note 4) @ TA = 25C IFSM 200 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 Littelfuse minimum recommended footprint, as shown in 403 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 = 100 A) (Note 5) IF Symbol Parameter IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM Working Peak Reverse Voltage VC VBRVRWM 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, PW = 8.3 ms non−repetitive duty Uni−Directional TVS cycle Specifications subject to change without notice. © 2016 Littelfuse, Inc. 2 Publication Order Number: September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted) Breakdown Voltage VC @ IPP (Note 8) VRWM Device (Note 6) IR @ VRWM VBR V (Note 7) @ IT VC IPP Device* Marking V (cid:2)A Min Nom Max mA V A 1SMC5.0AT3G GDE 5.0 1000 6.4 6.7 7.0 10 9.2 163 1SMC6.0AT3G GDG 6.0 1000 6.67 7.02 7.37 10 10.3 145.6 1SMC6.5AT3G GDK 6.5 500 7.22 7.6 7.98 10 11.2 133.9 1SMC7.5AT3G GDP 7.5 100 8.33 8.77 9.21 1 12.9 116.3 1SMC8.0AT3G GDR 8.0 50 8.89 9.36 9.83 1 13.6 110.3 1SMC9.0AT3G GDV 9.0 10 10 10.55 11.1 1 15.4 97.4 1SMC10AT3G GDX 10 5 11.1 11.7 12.3 1 17 88.2 1SMC12AT3G GEE 12 5 13.3 14 14.7 1 19.9 75.3 1SMC13AT3G GEG 13 5 14.4 15.15 15.9 1 21.5 69.7 1SMC14AT3G GEK 14 5 15.6 16.4 17.2 1 23.2 64.7 1SMC15AT3G GEM 15 5 16.7 17.6 18.5 1 24.4 61.5 1SMC16AT3G GEP 16 5 17.8 18.75 19.7 1 26 57.7 1SMC17AT3G GER 17 5 18.9 19.9 20.9 1 27.6 53.3 1SMC18AT3G GET 18 5 20 21.05 22.1 1 29.2 51.4 1SMC20AT3G GEV 20 5 22.2 23.35 24.5 1 32.4 46.3 1SMC22AT3G GEX 22 5 24.4 25.65 26.9 1 35.5 42.2 1SMC24AT3G GEZ 24 5 26.7 28.1 29.5 1 38.9 38.6 1SMC26AT3G GFE 26 5 28.9 30.4 31.9 1 42.1 35.6 1SMC28AT3G GFG 28 5 31.1 32.75 34.4 1 45.4 33 1SMC30AT3G GFK 30 5 33.3 35.05 36.8 1 48.4 31 1SMC33AT3G GFM 33 5 36.7 38.65 40.6 1 53.3 28.1 1SMC36AT3G GFP 36 5 40 42.1 44.2 1 58.1 25.8 1SMC40AT3G GFR 40 5 44.4 46.75 49.1 1 64.5 32.2 1SMC43AT3G GFT 43 5 47.8 50.3 52.8 1 69.4 21.6 1SMC48AT3G GFX 48 5 53.3 56.1 58.9 1 77.4 19.4 1SMC51AT3G GFZ 51 5 56.7 59.7 62.7 1 82.4 18.2 1SMC54AT3G GGE 54 5 60 63.15 66.3 1 87.1 17.2 1SMC58AT3G GGG 58 5 64.4 67.8 71.2 1 93.6 16 1SMC60AT3G GGK 60 5 66.7 70.2 73.7 1 96.8 15.5 1SMC64AT3G GGM 64 5 71.1 74.85 78.6 1 103 14.6 1SMC70AT3G GGP 70 5 77.8 81.9 86 1 113 13.3 1SMC75AT3G GGR 75 5 83.3 87.7 92.1 1 121 12.4 1SMC78AT3G GGT 78 5 86.7 91.25 95.8 1 126 11.4 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. *Include SZ-prefix devices where applicable. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 3 Publication Order Number: September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series 100 PULSE WIDTH (tP) IS DEFINED NPUOLNSREE WPEATVIETFIVOERM tr(cid:2) 10 (cid:2)s ACSU RTRHEANT TP ODEINCTA WYSH ETORE 5 0T%HE PEAK kW) SHOWN IN FIGURE 2 100 OF IPP. R ( PEAK VALUE - IPP WE %) K PO 10 ALUE ( HALF VALUE - IPP A V 2 E 50 P , k p P tP 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 tP, PULSE WIDTH t, TIME (ms) Figure 1. Pulse Rating Curve Figure 2. Pulse Waveform 160 C 1000 LSE DERATING IN % OFR OR CURRENT @ T= 25A 1118602400000 CURRENT (AMPS)5215200000000 tTPL(cid:2)(cid:2)==(cid:2)(cid:2)1205(cid:2)(cid:2)Cs VBR(cid:2)(N2O02(cid:2)MV4)(cid:2)V(cid:2)=(cid:2)6.8(cid:2)TO43(cid:2)1(cid:2)V37(cid:2)1V518(cid:2)20V0(cid:2)V(cid:2)V PEAK PUAK POWE 4200 , TEST T 150 E I 2 P 0 1 0 25 50 75 100 125 150 0.3 0.5 0.7 1 2 3 5 7 10 20 30 TA, AMBIENT TEMPERATURE (C) (cid:4)VBR, INSTANTANEOUS INCREASE IN VBR ABOVE VBR (NOM) (VOLTS) Figure 3. Pulse Derating Curve Figure 4. Dynamic Impedance 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 Voltage-Withstand under the UL standard for safety 497B and File #E128662. 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. 4 Publication Order Number: September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G 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 5. 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 7. 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 6. Minimizing this overshoot is very important in the At first glance the derating curves of Figure 7 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 SMC series have the 10 (cid:2)s pulse. However, when the derating factor for a a very good response time, typically < 1 ns and negligible given pulse of Figure 7 is multiplied by the peak power value inductance. However, external inductive effects could of Figure 1 for the same pulse, the results follow the produce unacceptable overshoot. Proper circuit layout, expected trend. Specifications subject to change without notice. © 2016 Littelfuse, Inc. 6 Publication Order Number: September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series TYPICAL PROTECTION CIRCUIT Zin Vin LOAD VL 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 5. Figure 6. 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 7. Typical Derating Factor for Duty Cycle Specifications subject to change without notice. © 2016 Littelfuse, Inc. 6 Publication Order Number: September 19, 2016 − Rev. 8 1SMC5.0AT3/D

1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series PACKAGE DIMENSIONS SMC HE NO1.TEDSI:MENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. E 3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P. 4. 403-01 THRU -02 OBSOLETE, NEW STANDARD 403-03. MILLIMETERS INCHES DIM MIN NOM MAX MIN NOM MAX A b D A1 b c D E HE L L1 A c A1 L L1 SOLDERING FOOTPRINT mm 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. .com Specifications subject to change without notice. © 2016 Littelfuse, Inc. September 19, 2016 − Rev. 8 1SMC5.0AT3/D