OBSOLETE/EOL P6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series DATE June/30/2018 PCN/ECN# LFPCN41246 REPLACED BY P6SMB Series 600 Watt Peak Power Zener Transient Voltage Suppressors Littelfuse.com Unidirectional* The SMB 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 SMB series is 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. PLASTIC SURFACE MOUNT ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS 5.8-171 VOLTS 600 WATT PEAK POWER SMB CASE 403A PLASTIC Specification Features: * * * * * * * * * * Working Peak Reverse Voltage Range - 5.8 to 171 V Standard Zener Breakdown Voltage Range - 6.8 to 200 V Peak Power - 600 W @ 1 ms ESD Rating of Class 3 (> 16 kV) per Human Body Model Maximum Clamp Voltage @ Peak Pulse Current Low Leakage < 5 mA Above 10 V UL 497B for Isolated Loop Circuit Protection 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 These Devices are Pb-Free and are RoHS Compliant Mechanical Characteristics: CASE: Void-free, transfer-molded, thermosetting plastic FINISH: All external surfaces are corrosion resistant and leads are Cathode Anode MARKING DIAGRAM AYWW xx G G A Y WW xx G = Assembly Location = Year = Work Week = Device Code (Refer to page 3) = Pb-Free Package (Note: Microdot may be in either location) readily solderable MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260C for 10 Seconds ORDERING INFORMATION LEADS: Modified L-Bend providing more contact area to bond pads POLARITY: Cathode indicated by polarity band MOUNTING POSITION: Any Device Package Shipping P6SMBxxxAT3G SMB (Pb-Free) 2,500 / Tape & Reel SZP6SMBxxxAT3G SMB (Pb-Free) 2,500 / Tape & Reel *Please see P6SMB11CAT3 to P6SMB91CAT3 for Bidirectional devices. Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 14 1 Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms PPK 600 W DC Power Dissipation @ TL = 75C Measured Zero Lead Length (Note 2) Derate Above 75C Thermal Resistance from Junction-to-Lead PD 3.0 40 25 W mW/C C/W 0.55 4.4 226 W mW/C C/W DC Power Dissipation (Note 3) @ TA = 25C Derate Above 25C Thermal Resistance from Junction-to-Ambient RqJL PD RqJA Forward Surge Current (Note 4) @ TA = 25C Operating and Storage Temperature Range IFSM 100 A TJ, Tstg -65 to +150 C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. 10 X 1000 ms, non-repetitive 2. 1 square copper pad, FR-4 board 3. FR-4 board, using Littelfuse 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 = 25C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 4) = 30 A, VF = 1.3 V Max. @ IF (Note 4) = 3 A) (Note 5) Symbol IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR VBR IT QVBR I Parameter IF Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM VC VBR VRWM Breakdown Voltage @ IT Test Current V IR VF IT Maximum Temperature Coefficient of VBR IF Forward Current VF Forward Voltage @ IF IPP 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. 14 Uni-Directional TVS 2 Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series ELECTRICAL CHARACTERISTICS Device* Device Marking VC @ IPP (Note 8) Breakdown Voltage VRWM (Note 6) IR @ VRWM V mA Min Nom @ IT VC IPP QVBR Ctyp (Note 9) Max mA V A %/C pF VBR V (Note 7) P6SMB6.8AT3G P6SMB7.5AT3G P6SMB8.2AT3G P6SMB9.1AT3G 6V8A 7V5A 8V2A 9V1A 5.8 6.4 7.02 7.78 1000 500 200 50 6.45 7.13 7.79 8.65 6.8 7.51 8.2 9.1 7.14 7.88 8.61 9.55 10 10 10 1 10.5 11.3 12.1 13.4 57 53 50 45 0.057 0.061 0.065 0.068 2380 2180 2015 1835 P6SMB10AT3G P6SMB12AT3G P6SMB13AT3G 10A 12A 13A 8.55 10.2 11.1 10 5 5 9.5 11.4 12.4 10 12 13.05 10.5 12.6 13.7 1 1 1 14.5 16.7 18.2 41 36 33 0.073 0.078 0.081 1690 1435 1335 P6SMB15AT3G P6SMB16AT3G P6SMB18AT3G P6SMB20AT3G 15A 16A 18A 20A 12.8 13.6 15.3 17.1 5 5 5 5 14.3 15.2 17.1 19 15.05 16 18 20 15.8 16.8 18.9 21 1 1 1 1 21.2 22.5 25.2 27.7 28 27 24 22 0.084 0.086 0.088 0.09 1175 1110 1000 910 P6SMB22AT3G P6SMB24AT3G P6SMB27AT3G P6SMB30AT3G 22A 24A 27A 30A 18.8 20.5 23.1 25.6 5 5 5 5 20.9 22.8 25.7 28.5 22 24 27.05 30 23.1 25.2 28.4 31.5 1 1 1 1 30.6 33.2 37.5 41.4 20 18 16 14.4 0.092 0.094 0.096 0.097 835 775 700 635 P6SMB33AT3G P6SMB36AT3G P6SMB39AT3G P6SMB43AT3G 33A 36A 39A 43A 28.2 30.8 33.3 36.8 5 5 5 5 31.4 34.2 37.1 40.9 33.05 36 39.05 43.05 34.7 37.8 41 45.2 1 1 1 1 45.7 49.9 53.9 59.3 13.2 12 11.2 10.1 0.098 0.099 0.1 0.101 585 540 500 460 P6SMB47AT3G P6SMB51AT3G P6SMB56AT3G P6SMB62AT3G 47A 51A 56A 62A 40.2 43.6 47.8 53 5 5 5 5 44.7 48.5 53.2 58.9 47.05 51.05 56 62 49.4 53.6 58.8 65.1 1 1 1 1 64.8 70.1 77 85 9.3 8.6 7.8 7.1 0.101 0.102 0.103 0.104 425 395 365 335 P6SMB68AT3G P6SMB75AT3G P6SMB91AT3G 68A 75A 91A 58.1 64.1 77.8 5 5 5 64.6 71.3 86.5 68 75.05 91 71.4 78.8 95.5 1 1 1 92 103 125 6.5 5.8 4.8 0.104 0.105 0.106 305 280 235 P6SMB100AT3G P6SMB120AT3G P6SMB130AT3G 100A 120A 130A 85.5 102 111 5 5 5 95 114 124 100 120 130.5 105 126 137 1 1 1 137 165 179 4.4 3.6 3.3 0.106 0.107 0.107 215 185 170 P6SMB150AT3G P6SMB160AT3G P6SMB180AT3G 150A 160A 180A 128 136 154 5 5 5 143 152 171 150.5 160 180 158 168 189 1 1 1 207 219 246 2.9 2.7 2.4 0.108 0.108 0.108 150 140 130 P6SMB200AT3G 200A 171 5 190 200 210 1 274 2.2 0.108 115 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 2 and derate per Figure 3. 9. Bias Voltage = 0 V, F = 1 MHz, TJ = 25C * Include SZ-prefix devices where applicable. Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 14 3 Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G 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 10 PEAK VALUE - IPP VALUE (%) PP, PEAK POWER (kW) 100 I HALF VALUE - PP 2 50 1 tP 0.1 0.1 ms 1 ms 10 ms 100 ms 1 ms 0 10 ms 0 1 2 Figure 1. Pulse Rating Curve 5 Figure 2. Pulse Waveform 10,000 160 140 P6SMB6.8AT3G C, CAPACITANCE (pF) PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT @ TA = 25 C 4 t, TIME (ms) tP, PULSE WIDTH 120 100 80 60 40 1000 P6SMB18AT3G P6SMB51AT3G 100 10 0 25 50 75 100 125 150 1 P6SMB200AT3G TJ = 25C f = 1 MHz 20 0 3 1 10 TA, AMBIENT TEMPERATURE (C) 100 1000 BIAS VOLTAGE (VOLTS) Figure 3. Pulse Derating Curve Figure 4. Typical Junction Capacitance vs. Bias Voltage TYPICAL PROTECTION CIRCUIT Zin LOAD Vin Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 14 4 VL Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G 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 SMB series have a very good response time, typically < 1 ns and negligible inductance. However, external inductive effects could produce unacceptable overshoot. Proper circuit layout, V 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. V Vin (TRANSIENT) 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. 14 5 Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series 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. 14 6 Publication Order Number: P6SMB6.8AT3/D P6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series PACKAGE DIMENSIONS SMB CASE 403A-03 ISSUE J HE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION b SHALL BE MEASURED WITHIN DIMENSION L1. E b DIM A A1 b c D E HE L L1 D POLARITY INDICATOR OPTIONAL AS NEEDED MIN 1.95 0.05 1.96 0.15 3.30 4.06 5.21 0.76 MILLIMETERS NOM MAX 2.30 2.47 0.10 0.20 2.03 2.20 0.23 0.31 3.56 3.95 4.32 4.60 5.44 5.60 1.02 1.60 0.51 REF MIN 0.077 0.002 0.077 0.006 0.130 0.160 0.205 0.030 INCHES NOM 0.091 0.004 0.080 0.009 0.140 0.170 0.214 0.040 0.020 REF MAX 0.097 0.008 0.087 0.012 0.156 0.181 0.220 0.063 A L L1 A1 c SOLDERING FOOTPRINT 2.261 0.089 2.743 0.108 2.159 0.085 SCALE 8:1 mm inches Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, 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. Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 14 7 Publication Order Number: P6SMB6.8AT3/D