P6KE6.8A Series 600 Watt Peak Power Littelfuse -40 Transient Voltage Suppressors Unidirectional* Littelfuse.com The P6KE6.8A series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability and fast response time. These devices are the Littelfuse exclusive, costeffective, highly reliable axial leaded package and is ideally-suited for use in communication systems, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications. Cathode Anode Features: * * * * * * * * * Working Peak Reverse Voltage Range - 5.8 to 171 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 Maximum Temperature Coefficient Specified UL 497B for Isolated Loop Circuit Protection Response Time is Typically < 1 ns Pb-Free Packages are Available* AXIAL LEAD CASE 017AA PLASTIC MARKING DIAGRAM Mechanical Characteristics: CASE: Void-free, Transfer-molded, Thermosetting plastic FINISH: All external surfaces are corrosion resistant and leads are A P6KE xxxA YYWW readily solderable MAXIMUM LEAD TEMPERATURE FOR SOLDERING: 260C, 1/16 from the case for 10 seconds POLARITY: Cathode indicated by polarity band MOUNTING POSITION: Any MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note 1) @ TL 25C PPK 600 W Steady State Power Dissipation @ TL 25C, Lead Length = 3/8 in Derated above TL = 50C PD 5.0 W 50 mW/C Thermal Resistance, Junction-to-Lead RqJL 20 C/W Forward Surge Current (Note 2) @ TA = 25C IFSM 100 A Operating and Storage Temperature Range TJ, Tstg - 55 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. Nonrepetitive current pulse per Figure 4 and derated above TA = 25C per Figure 2. 2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 10 1 A = Assembly Location P6KExxxA = Device Number YY = Year WW = Work Week = Pb-Free Package (Note: Microdot may be in either location) ORDERING INFORMATION Device Package Shipping P6KExxxA Axial Lead 1000 Units / Box P6KExxxAG Axial Lead (Pb-Free) 1000 Units / Box P6KExxxARL Axial Lead 4000/Tape & Reel P6KExxxARLG Axial Lead (Pb-Free) 4000/Tape & Reel Publication Order Number: P6KE6.8A/D P6KE6.8A Series ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 6) = 50 A) Symbol Parameter IF IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR VBR IT QVBR I Working Peak Reverse Voltage VC VBR VRWM Maximum Reverse Leakage Current @ VRWM V IR VF IT Breakdown Voltage @ IT Test Current Maximum Temperature Coefficient of VBR IF Forward Current VF Forward Voltage @ IF IPP Uni-Directional TVS ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 6) = 50 A) Device* Device Marking VC @ IPP (Note 5) Breakdown Voltage VRWM (Note 3) IR @ VRWM (Note 4) (V) @ IT VC IPP QVBR V mA Min Nom Max mA V A %/C VBR P6KE6.8A, G P6KE7.5ARLG P6KE6.8A P6KE7.5A 5.8 6.4 1000 500 6.45 7.13 6.80 7.51 7.14 7.88 10 10 10.5 11.3 57 53 0.057 0.061 P6KE10AG P6KE12A, G P6KE13AG P6KE10A P6KE12A P6KE13A 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 P6KE15AG P6KE16A, G P6KE18AG P6KE20ARLG P6KE15A P6KE16A P6KE18A P6KE20A 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 P6KE22ARLG P6KE24ARLG P6KE27ARLG P6KE30ARLG P6KE22A P6KE24A P6KE27A P6KE30A 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 P6KE33AG P6KE36AG P6KE39AG P6KE43AG P6KE33A P6KE36A P6KE39A P6KE43A 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 P6KE47AG P6KE51AG P6KE56AG P6KE62ARLG P6KE47A P6KE51A P6KE56A P6KE62A 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 P6KE68AG P6KE75ARLG P6KE82ARLG P6KE91ARLG P6KE68A P6KE75A P6KE82A P6KE91A 58.1 64.1 70.1 77.8 5 5 5 5 64.6 71.3 77.9 86.5 68 75.05 82 91 71.4 78.8 86.1 95.5 1 1 1 1 92 103 113 125 6.5 5.8 5.3 4.8 0.104 0.105 0.105 0.106 P6KE100ARLG P6KE120ARLG P6KE130AG P6KE100A P6KE120A P6KE130A 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 P6KE150AG P6KE150A 128 5 143 150.5 158 1 207 2.9 0.108 P6KE160ARLG P6KE160A 136 5 152 160 168 1 219 2.7 0.108 P6KE180ARLG P6KE180A 154 5 171 180 189 1 246 2.4 0.108 P6KE200A, G P6KE200A 171 5 190 200 210 1 274 2.2 0.108 3. 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. 4. VBR measured at pulse test current IT at an ambient temperature of 25C 5. Surge current waveform per Figure 4 and derate per Figures 1 and 2. 6. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. *The "G'' suffix indicates Pb-Free package or Pb-Free Packages are available. Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 10 2 Publication Order Number: P6KE6.8A/D PPK , PEAK POWER (kW) 100 PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT @ TA = 25 C P6KE6.8A Series NONREPETITIVE PULSE WAVEFORM SHOWN IN FIGURE 4 10 100 1 0.1 0.1 ms 1 ms 10 ms 1 ms 100 ms 10 ms tP, PULSE WIDTH 80 60 40 20 0 0 25 50 75 100 125 150 175 TA, AMBIENT TEMPERATURE (C) Figure 2. Pulse Derating Curve Figure 1. Pulse Rating Curve tr 10 ms PEAK VALUE - IPP 100 VALUE (%) C, CAPACITANCE (pF) 10,000 MEASURED @ ZERO BIAS 1000 HALF VALUE - 50 MEASURED @ VRWM 100 10 0.1 0 1000 0 1 3/8 3/8 4 3 2 2 3 t, TIME (ms) 4 1 0.7 0.5 DERATING FACTOR PD, STEADY STATE POWER DISSIPATION (WATTS) IPP 2 Figure 4. Pulse Waveform Figure 3. Capacitance versus Breakdown Voltage 0.3 0.2 PULSE WIDTH 10 ms 0.1 0.07 0.05 1 ms 0.03 100 ms 0.02 1 0 PULSE WIDTH (tp) IS DEFINED AS THAT POINT WHERE THE PEAK CURRENT DECAYS TO 50% OF IPP. tP 1 10 100 VBR, BREAKDOWN VOLTAGE (VOLTS) 5 0.01 0 25 50 75 100 125 150 175 TL, LEAD TEMPERATURE C) 200 Figure 5. Steady State Power Derating Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 10 200 10 ms 0.1 0.2 0.5 1 2 5 10 D, DUTY CYCLE (%) 20 50 100 Figure 6. Typical Derating Factor for Duty Cycle 3 Publication Order Number: P6KE6.8A/D P6KE6.8A Series APPLICATION NOTES RESPONSE TIME 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 capacitance 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 7. 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 8. Minimizing this overshoot is very important in the application, since the main purpose for adding a transient suppressor is to clamp voltage spikes. The P6KE6.8A series has very good response time, typically < 1 ns and negligible inductance. However, external inductive effects could produce unacceptable overshoot. Proper circuit layout, minimum lead lengths and placing the 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 6. 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 6 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 6 is multiplied by the peak power value of Figure 1 for the same pulse, the results follow the expected trend. 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 Figure 8. Figure 7. t UL RECOGNITION* The entire series including the bidirectional CA suffix has Underwriters Laboratory Recognition for the classification of protectors (QVGQ2) under the UL standard for safety 497B and File #E210057. 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 Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 10 tests 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. *Applies to P6KE6.8A - P6KE200A. 4 Publication Order Number: P6KE6.8A/D P6KE6.8A Series PACKAGE DIMENSIONS LITTELFUSE 40, AXIAL LEAD CASE 017AA-01 ISSUE O NOTES: 1. CONTROLLING DIMENSION: INCH 2. LEAD DIAMETER AND FINISH NOT CONTROLLED WITHIN DIMENSION F. 3. CATHODE BAND INDICATES POLARITY B DIM A B D F K D F K INCHES MIN MAX 0.330 0.350 0.130 0.145 0.037 0.043 --0.050 1.000 1.250 MILLIMETERS MIN MAX 8.38 8.89 3.30 3.68 0.94 1.09 --1.27 25.40 31.75 A K F 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. Littelfuse.com Specifications subject to change without notice. (c) 2016 Littelfuse, Inc. September 19, 2016 - Rev. 10 5 Publication Order Number: P6KE6.8A/D