OBSOLETE/EOL DATE June/30/2018 PCN/ECN# LFPCN41246 REPLACED BY SMCJ Series 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series 1500 Watt Peak Power Zener Transient Voltage Suppressors .com Unidirectional* The SMC 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 SMC series is Littelfuse exclusive, cost-effective, highly supplied in 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. PLASTIC SURFACE MOUNT ZENER TRANSIENT VOLTAGE SUPPRESSORS 5.0-78 VOLTS 1500 WATT PEAK POWER 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 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 FINISH: All external surfaces are corrosion resistant and leads are readily solderable MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: MARKING DIAGRAM ORDERING INFORMATION Device Package Shipping 260C 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. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 1 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms PPK 1500 W DC Power Dissipation @ TL = 75C Measured Zero Lead Length (Note 2) Derate Above 75C Thermal Resistance from Junction-to-Lead PD 4.0 W RqJL 54.6 18.3 mW/C C/W W mW/C C/W DC Power Dissipation (Note 3) @ TA = 25C Derate Above 25C Thermal Resistance from Junction-to-Ambient PD RqJA 0.75 6.1 165 Forward Surge Current (Note 4) @ TA = 25C IFSM 200 A TJ, Tstg -65 to +150 C Operating and Storage Temperature Range 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 ms, 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 = 25C unless otherwise noted, VF = 3.5 V Max @ IF = 100 A) (Note 5) Symbol Parameter IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR VBR I IF VC VBR VRWM Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM IR VF IT V Breakdown Voltage @ IT IT Test Current IF Forward Current VF Forward Voltage @ IF IPP Uni-Directional TVS 5. 1/2 sine wave or equivalent, PW = 8.3 ms non-repetitive duty cycle Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 2 Publication Order Number: 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted) Device* Device Marking VC @ IPP (Note 8) Breakdown Voltage VRWM (Note 6) IR @ VRWM V mA VBR V (Note 7) @ IT VC IPP Min Nom Max mA V A 1SMC5.0AT3G 1SMC6.0AT3G 1SMC6.5AT3G GDE GDG GDK 5.0 6.0 6.5 1000 1000 500 6.4 6.67 7.22 6.7 7.02 7.6 7.0 7.37 7.98 10 10 10 9.2 10.3 11.2 163 145.6 133.9 1SMC7.5AT3G 1SMC8.0AT3G 1SMC9.0AT3G GDP GDR GDV 7.5 8.0 9.0 100 50 10 8.33 8.89 10 8.77 9.36 10.55 9.21 9.83 11.1 1 1 1 12.9 13.6 15.4 116.3 110.3 97.4 1SMC10AT3G 1SMC12AT3G 1SMC13AT3G GDX GEE GEG 10 12 13 5 5 5 11.1 13.3 14.4 11.7 14 15.15 12.3 14.7 15.9 1 1 1 17 19.9 21.5 88.2 75.3 69.7 1SMC14AT3G 1SMC15AT3G 1SMC16AT3G 1SMC17AT3G GEK GEM GEP GER 14 15 16 17 5 5 5 5 15.6 16.7 17.8 18.9 16.4 17.6 18.75 19.9 17.2 18.5 19.7 20.9 1 1 1 1 23.2 24.4 26 27.6 64.7 61.5 57.7 53.3 1SMC18AT3G 1SMC20AT3G 1SMC22AT3G 1SMC24AT3G GET GEV GEX GEZ 18 20 22 24 5 5 5 5 20 22.2 24.4 26.7 21.05 23.35 25.65 28.1 22.1 24.5 26.9 29.5 1 1 1 1 29.2 32.4 35.5 38.9 51.4 46.3 42.2 38.6 1SMC26AT3G 1SMC28AT3G 1SMC30AT3G 1SMC33AT3G GFE GFG GFK GFM 26 28 30 33 5 5 5 5 28.9 31.1 33.3 36.7 30.4 32.75 35.05 38.65 31.9 34.4 36.8 40.6 1 1 1 1 42.1 45.4 48.4 53.3 35.6 33 31 28.1 1SMC36AT3G 1SMC40AT3G 1SMC43AT3G GFP GFR GFT 36 40 43 5 5 5 40 44.4 47.8 42.1 46.75 50.3 44.2 49.1 52.8 1 1 1 58.1 64.5 69.4 25.8 32.2 21.6 1SMC48AT3G 1SMC51AT3G 1SMC54AT3G 1SMC58AT3G GFX GFZ GGE GGG 48 51 54 58 5 5 5 5 53.3 56.7 60 64.4 56.1 59.7 63.15 67.8 58.9 62.7 66.3 71.2 1 1 1 1 77.4 82.4 87.1 93.6 19.4 18.2 17.2 16 1SMC60AT3G 1SMC64AT3G 1SMC70AT3G 1SMC75AT3G 1SMC78AT3G GGK GGM GGP GGR GGT 60 64 70 75 78 5 5 5 5 5 66.7 71.1 77.8 83.3 86.7 70.2 74.85 81.9 87.7 91.25 73.7 78.6 86 92.1 95.8 1 1 1 1 1 96.8 103 113 121 126 15.5 14.6 13.3 12.4 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 25C. 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. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 3 Publication Order Number: 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series NONREPETITIVE PULSE WAVEFORM SHOWN IN FIGURE 2 PULSE WIDTH (tP) IS DEFINED AS THAT POINT WHERE THE PEAK CURRENT DECAYS TO 50% OF IPP. tr 10 ms 100 PEAK VALUE - IPP VALUE (%) Ppk, PEAK POWER (kW) 100 10 HALF VALUE 50 IPP 2 tP 1 0.1 ms 1 ms 10 ms 100 ms 1 ms 0 10 ms 0 1 2 3 4 tP, PULSE WIDTH t, TIME (ms) Figure 1. Pulse Rating Curve Figure 2. Pulse Waveform 1000 140 IT, TEST CURRENT (AMPS) PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT @ TA = 25 C 160 120 100 80 60 40 20 0 0 25 50 75 100 125 150 500 VBR(NOM)=6.8TO13V 20V 43V 24V 75V TL=25C tP=10ms 200 100 120V 50 180V 20 10 5 2 1 0.3 0.5 0.7 1 2 3 5 7 10 20 30 TA, AMBIENT TEMPERATURE (C) DVBR, INSTANTANEOUS INCREASE IN VBR ABOVE VBR (NOM) (VOLTS) Figure 3. Pulse Derating Curve Figure 4. Dynamic Impedance UL RECOGNITION including Strike Voltage Breakdown test, Endurance Conditioning, Temperature test, Dielectric Voltage-Withstand test, Discharge test and several more. Whereas, some competitors have only passed a flammability test for the package material, we have been recognized for much more to be included in their Protector category. The entire series has Underwriters Laboratory Recognition for the classification of protectors (QVGQ2) under the UL standard for safety 497B and File #E128662 . Many competitors only have one or two devices recognized or have recognition in a non-protective category. Some competitors have no recognition at all. With the UL497B recognition, our parts successfully passed several tests Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 4 Publication Order Number: 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series APPLICATION NOTES Response Time minimum lead lengths and placing the suppressor device as close as possible to the equipment or components to be protected will minimize this overshoot. Some input impedance represented by Zin is essential to prevent overstress of the protection device. This impedance should be as high as possible, without restricting the circuit operation. In most applications, the transient suppressor device is placed in parallel with the equipment or component to be protected. In this situation, there is a time delay associated with the capacitance of the device and an overshoot condition associated with the inductance of the device and the inductance of the connection method. The capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in Figure 5. The inductive effects in the device are due to actual turn-on time (time required for the device to go from zero current to full current) and lead inductance. This inductive effect produces an overshoot in the voltage across the equipment or component being protected as shown in Figure 6. Minimizing this overshoot is very important in the application, since the main purpose for adding a transient suppressor is to clamp voltage spikes. The SMC series have a very good response time, typically < 1 ns and negligible inductance. However, external inductive effects could produce unacceptable overshoot. Proper circuit layout, Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 Duty Cycle Derating The data of Figure 1 applies for non-repetitive conditions and at a lead temperature of 25C. If the duty cycle increases, the peak power must be reduced as indicated by the curves of Figure 7. Average power must be derated as the lead or ambient temperature rises above 25C. The average power derating curve normally given on data sheets may be normalized and used for this purpose. At first glance the derating curves of Figure 7 appear to be in error as the 10 ms pulse has a higher derating factor than the 10 ms pulse. However, when the derating factor for a given pulse of Figure 7 is multiplied by the peak power value of Figure 1 for the same pulse, the results follow the expected trend. 6 Publication Order Number: 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series TYPICAL PROTECTION CIRCUIT Zin LOAD Vin V V Vin (TRANSIENT) VL OVERSHOOT DUE TO INDUCTIVE EFFECTS Vin (TRANSIENT) VL VL Vin td tD = TIME DELAY DUE TO CAPACITIVE EFFECT t t Figure 5. Figure 6. 1 0.7 DERATING FACTOR 0.5 0.3 0.2 PULSE WIDTH 10 ms 0.1 0.07 0.05 1 ms 0.03 100 ms 0.02 0.01 10 ms 0.1 0.2 0.5 1 2 5 10 D, DUTY CYCLE (%) 20 50 100 Figure 7. Typical Derating Factor for Duty Cycle Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 6 Publication Order Number: 1SMC5.0AT3/D 1SMC5.0AT3G Series, SZ1SMC5.0AT3G Series PACKAGE DIMENSIONS SMC HE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P. 4. 403-01 THRU -02 OBSOLETE, NEW STANDARD 403-03. E b DIM A A1 b c D E HE L L1 D MIN MILLIMETERS NOM MAX MIN INCHES NOM MAX A L L1 c A1 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. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 8 1SMC5.0AT3/D