P6KE75ARLG

## 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 effective, highly reliable  axial leaded package and is ideally-suited Littelfuse exclusive, cost- ~~o———\¢—_o~~ for use in communication systems, numerical controls, process Cathode Anode controls, medical equipment, business machines, power supplies and many other industrial/consumer applications. 

## **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 A above 10 V • . 

- ESD Rating of Class 3 (>16 KV) per Human Body Model 

- Maximum Temperature Coefficient Specified 

**AXIAL LEAD CASE 017AA** ~~a~~ **PLASTIC** 

- UL 497B for Isolated Loop Circuit Protection 

- Response Time is Typically < 1 ns 

- Pb−Free Packages are Available 

## **MARKING DIAGRAM** 

## **Mechanical Characteristics:** 

> **CASE:** Void-free, Transfer-molded, Thermosetting plastic **FINISH:** All external surfaces are corrosion resistant and leads are readily solderable 

A P6KE xxxA YYWW A = Assembly Location P6KExxxA = Device Number YY = Year WW = Work Week = Pb−Free Package (Note: Microdot may be in either location) 

## **MAXIMUM LEAD TEMPERATURE FOR SOLDERING:** 

260 C, 1/16″ from the case for 10 seconds 

**POLARITY:** Cathode indicated by polarity band **MOUNTING POSITION:** Any 

## **MAXIMUM RATINGS** 

~~ee~~ **Rating Symbol Value Unit** A = Assembly Location Peak Power Dissipation (Note 1) @ TL ≤ 25 ° C PPK 600 W P6KExxxA = Device Number YY = Year Steady State Power Dissipation@ TL ≤ 25 ° C, Lead Length = 3/8 in PD 5.0 W WW = Work Week Derated above TL = 50 ° C 50 mW/ ° C = Pb−Free Package ~~es ee pf~~ Thermal Resistance, Junction−to−Lead R JL 20 ° C/W (Note: Microdot may be in either location) Forward Surge Current (Note 2) @ TA = 25 ° C IFSM 100 A **ORDERING INFORMATION** Operating and Storage Temperature Range TJ, Tstg −55 to ° C +150 **Device Package Shipping** Stresses exceeding Maximum Ratings may damage the device. Maximum P6KExxxA Axial Lead 1000 Units / Box Ratings are stress ratings only. Functional operation above the Recommended P6KExxxAG Axial Lead 1000 Units / Box Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. (Pb−Free) 1. Nonrepetitive current pulse per Figure 4 and derated above TA = 25 ° C per P6KExxxARL Axial Lead 4000/Tape & Reel Figure 2. 2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses P6KExxxARLG Axial Lead 4000/Tape & Reel per minute maximum. (Pb−Free) ~~ee~~ ee ee ~~===~~ †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Specifications subject to change without notice.  © 2016 Littelfuse, Inc. **1** Publication Order Number: **September 19, 2016 − Rev. 10 P6KE6.8A/D** 

2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. 

Publication Order Number: **P6KE6.8A/D** 

**P6KE6.8A Series** 

## **ELECTRICAL CHARACTERISTICS** (TA = 25 ° C unless 

otherwise noted, VF = 3.5 V Max. @ IF (Note 6) = 50 A) 

|**Symbol**|**Parameter**|
|---|---|
|IPP|Maximum Reverse Peak Pulse Current|
|VC|Clamping Voltage @ IPP|
|VRWM|Working Peak Reverse Voltage|
|IR|Maximum Reverse Leakage Current @ VRWM|
|VBR|Breakdown Voltage @ IT|
|IT|Test Current|
|�VBR|Maximum Temperature Coefficient of VBR|
|IF|Forward Current|
|VF|Forward Voltage @ IF|



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I<br>IF<br>VC VBR VRWM<br>V<br>IR VF<br>IT<br>IPP<br>Uni−Directional TVS<br>**----- End of picture text -----**<br>


**ELECTRICAL CHARACTERISTICS** (TA = 25 ° C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 6) = 50 A) 

|**Device***|**Device**<br>**Marking**|**VRWM**<br>(Note 3)|**IR @ VRWM**|**Breakdown Voltage**|**Breakdown Voltage**|**Breakdown Voltage**|**Breakdown Voltage**|**VC @ IPP **(Note 5)|**VC @ IPP **(Note 5)|**�VBR**|
|---|---|---|---|---|---|---|---|---|---|---|
|||||**VBR**<br>(Note 4)**(V)**|||**@ IT**|**VC**|**IPP**||
|||**V**|�**A**|**Min**|**Nom**|**Max**|**mA**|**V**|**A**|**%/**°**C**|
|P6KE6.8A, G<br>P6KE7.5ARLG|P6KE6.8A<br>P6KE7.5A|5.8<br>6.4|1000<br>500|6.45<br>7.13|6.80<br>7.51|7.14<br>7.88|10<br>10|10.5<br>11.3|57<br>53|0.057<br>0.061|
|P6KE10AG<br>P6KE12A, G<br>P6KE13AG|P6KE10A<br>P6KE12A<br>P6KE13A|8.55<br>10.2<br>11.1|10<br>5<br>5|9.5<br>11.4<br>12.4|10<br>12<br>13.05|10.5<br>12.6<br>13.7|1<br>1<br>1|14.5<br>16.7<br>18.2|41<br>36<br>33|0.073<br>0.078<br>0.081|
|P6KE15AG<br>P6KE16A, G<br>P6KE18AG<br>P6KE20ARLG|P6KE15A<br>P6KE16A<br>P6KE18A<br>P6KE20A|12.8<br>13.6<br>15.3<br>17.1|5<br>5<br>5<br>5|14.3<br>15.2<br>17.1<br>19|15.05<br>16<br>18<br>20|15.8<br>16.8<br>18.9<br>21|1<br>1<br>1<br>1|21.2<br>22.5<br>25.2<br>27.7|28<br>27<br>24<br>22|0.084<br>0.086<br>0.088<br>0.09|
|P6KE22ARLG<br>P6KE24ARLG<br>P6KE27ARLG<br>P6KE30ARLG|P6KE22A<br>P6KE24A<br>P6KE27A<br>P6KE30A|18.8<br>20.5<br>23.1<br>25.6|5<br>5<br>5<br>5|20.9<br>22.8<br>25.7<br>28.5|22<br>24<br>27.05<br>30|23.1<br>25.2<br>28.4<br>31.5|1<br>1<br>1<br>1|30.6<br>33.2<br>37.5<br>41.4|20<br>18<br>16<br>14.4|0.092<br>0.094<br>0.096<br>0.097|
|P6KE33AG<br>P6KE36AG<br>P6KE39AG<br>P6KE43AG|P6KE33A<br>P6KE36A<br>P6KE39A<br>P6KE43A|28.2<br>30.8<br>33.3<br>36.8|5<br>5<br>5<br>5|31.4<br>34.2<br>37.1<br>40.9|33.05<br>36<br>39.05<br>43.05|34.7<br>37.8<br>41<br>45.2|1<br>1<br>1<br>1|45.7<br>49.9<br>53.9<br>59.3|13.2<br>12<br>11.2<br>10.1|0.098<br>0.099<br>0.1<br>0.101|
|P6KE47AG<br>P6KE51AG<br>P6KE56AG<br>P6KE62ARLG|P6KE47A<br>P6KE51A<br>P6KE56A<br>P6KE62A|40.2<br>43.6<br>47.8<br>53|5<br>5<br>5<br>5|44.7<br>48.5<br>53.2<br>58.9|47.05<br>51.05<br>56<br>62|49.4<br>53.6<br>58.8<br>65.1|1<br>1<br>1<br>1|64.8<br>70.1<br>77<br>85|9.3<br>8.6<br>7.8<br>7.1|0.101<br>0.102<br>0.103<br>0.104|
|P6KE68AG<br>P6KE75ARLG<br>P6KE82ARLG<br>P6KE91ARLG|P6KE68A<br>P6KE75A<br>P6KE82A<br>P6KE91A|58.1<br>64.1<br>70.1<br>77.8|5<br>5<br>5<br>5|64.6<br>71.3<br>77.9<br>86.5|68<br>75.05<br>82<br>91|71.4<br>78.8<br>86.1<br>95.5|1<br>1<br>1<br>1|92<br>103<br>113<br>125|6.5<br>5.8<br>5.3<br>4.8|0.104<br>0.105<br>0.105<br>0.106|
|P6KE100ARLG<br>P6KE120ARLG<br>P6KE130AG|P6KE100A<br>P6KE120A<br>P6KE130A|85.5<br>102<br>111|5<br>5<br>5|95<br>114<br>124|100<br>120<br>130.5|105<br>126<br>137|1<br>1<br>1|137<br>165<br>179|4.4<br>3.6<br>3.3|0.106<br>0.107<br>0.107|
|P6KE150AG<br>P6KE160ARLG<br>P6KE180ARLG<br>P6KE200A, G|P6KE150A<br>P6KE160A<br>P6KE180A<br>P6KE200A|128<br>136<br>154<br>171|5<br>5<br>5<br>5|143<br>152<br>171<br>190|150.5<br>160<br>180<br>200|158<br>168<br>189<br>210|1<br>1<br>1<br>1|207<br>219<br>246<br>274|2.9<br>2.7<br>2.4<br>2.2|0.108<br>0.108<br>0.108<br>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 25 ° C 

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. 

Publication Order Number: 

**2** 

Specifications subject to change without notice.  © 2016 Littelfuse, Inc. **September 19, 2016 − Rev. 10** 

**P6KE6.8A/D** 

**P6KE6.8A Series** 

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100<br>NONREPETITIVE PULSE �<br>WAVEFORM SHOWN IN<br>FIGURE 4<br>10<br>100<br>80<br>60<br>1<br>40<br>20<br>0.1 0<br>0.1  � s 1  � s 10  � s 100  � s 1 ms 10 ms 0 25 50 75 100 125 150 175 200<br>tP, PULSE WIDTH TA, AMBIENT TEMPERATURE ( � C)<br>Figure 1. Pulse Rating Curve Figure 2. Pulse Derating Curve<br>PULSE WIDTH (t p ) IS<br>t r ≤  10  � s DEFINED AS THAT<br>POINT WHERE THE<br>10,000 100 PEAK VALUE − I PP PEAK CURRENTDECAYS TO 50% OF IPP.<br>MEASURED @<br>ZERO BIAS<br>1000 I PP<br>HALF VALUE −<br>2<br>50<br>100 MEASURED @<br>VRWM t P<br>10<br>0.1 1 10 100 1000 0 0 1 2 3 4<br>VBR, BREAKDOWN VOLTAGE (VOLTS) t, TIME (ms)<br>Figure 3. Capacitance versus Breakdown Voltage Figure 4. Pulse Waveform<br>1<br>0.7<br>3/8 ″ 0.5<br>0.3<br>5 3/8 ″<br>0.2<br>PULSE WIDTH<br>4 0.1 10 ms<br>0.07<br>3<br>0.05<br>1 ms<br>2 0.03<br>0.02 100  � s<br>1<br>10  � s<br>0.01<br>0<br>0.1 0.2 0.5 1 2 5 10 20 50 100<br>0 25 50 75 100 125 150 175 200<br>TL, LEAD TEMPERATURE  � C) D, DUTY CYCLE (%)<br>C<br>= 25<br>, PEAK POWER (kW)<br>K<br>PP<br>PEAK PULSE DERATING IN % OF<br>PEAK POWER OR CURRENT @ TA<br>C, CAPACITANCE (pF) VALUE (%)<br>DERATING FACTOR<br>PD, STEADY STATE POWER DISSIPATION (WATTS)<br>**----- End of picture text -----**<br>


**Figure 5. Steady State Power Derating** 

**Figure 6. Typical Derating Factor for Duty Cycle** 

Publication Order Number: 

**3** 

Specifications subject to change without notice.  © 2016 Littelfuse, Inc. **September 19, 2016 − Rev. 10** 

**P6KE6.8A/D** 

**P6KE6.8A Series** 

## **APPLICATION NOTES** 

## **RESPONSE TIME** 

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 

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. 

## **DUTY CYCLE DERATING** 

The data of Figure 1 applies for non-repetitive conditions and at a lead temperature of 25°C. 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 25°C. 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 �s 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** 

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Zin<br>Vin LOAD VL<br>Vin (TRANSIENT)<br>OVERSHOOT DUE TO<br>V Vin (TRANSIENT) V INDUCTIVE EFFECTS<br>VL<br>VL<br>Vin<br>td<br>tD = TIME DELAY DUE TO CAPACITIVE EFFECT<br>t t<br>**----- End of picture text -----**<br>


**Figure 7.** 

**Figure 8.** 

**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 #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 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. 

Publication Order Number: 

Specifications subject to change without notice.  © 2016 Littelfuse, Inc. **September 19, 2016 − Rev. 10** 

**4** 

**P6KE6.8A/D** 

**P6KE6.8A Series** 

## **PACKAGE DIMENSIONS** 

**LITTELFUSE 40, AXIAL LEAD** CASE 017AA−01 ISSUE O 

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B<br>D<br>K<br>F<br>A<br>F<br>K<br>**----- End of picture text -----**<br>


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NOTES:<br>1. CONTROLLING DIMENSION:  INCH<br>2. LEAD DIAMETER AND FINISH NOT CONTROLLED<br>WITHIN DIMENSION F.<br>3. CATHODE BAND INDICATES POLARITY<br>INCHES MILLIMETERS<br>DIM MIN MAX MIN MAX<br>A 0.330 0.350 8.38 8.89<br>B 0.130 0.145 3.30 3.68<br>D 0.037 0.043 0.94 1.09<br>F --- 0.050 --- 1.27<br>K 1.000 1.250 25.40 31.75<br>**----- End of picture text -----**<br>


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 applicabl e 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 applica ble Littelfuse documentation.  The sale and use of Littelfuse p roducts is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 

**Littelfuse.com** 

Publication Order Number: **P6KE6.8A/D** 

Specifications subject to change without notice.  © 2016 Littelfuse, Inc. **September 19, 2016 − Rev. 10** 

**5**