P6KE18AG - ON SEMICONDUCTOR

October, 2009 − Rev. 10

1Publication Order Number:

P6KE6.8A/D

P6KE6.8A Series

600 Watt Peak Power

Surmetict-40 Transient

Voltage Suppressors

Unidirectional*

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 ON Semiconductor’s exclusive,

cost-effective, highly reliable Surmetic 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.

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*

Mechanical Characteristics:

CASE: Void-free, Transfer-molded, Thermosetting plastic

FINISH: All external surfaces are corrosion resistant and leads are

readily solderable

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

Rating Symbol Value Unit

Peak Power Dissipation (Note 1) @ TL ≤ 25°C PPK 600 W

Steady State Power Dissipation

@ TL ≤ 25°C, Lead Length = 3/8 in

Derated above TL = 50°C

PD5.0

mW/°C

Thermal Resistance, Junction−to−Lead RqJL 20 °C/W

Forward Surge Current (Note 2) @ TA = 25°C 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 = 25°C per

Figure 2.

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

per minute maximum.

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

http://onsemi.com

Cathode Anode

MARKING DIAGRAM

P6KE

xxxA

YYWW



Device Package Shipping†

ORDERING INFORMATION

P6KExxxA Axial Lead 1000 Units / Box

P6KExxxAG Axial Lead

(Pb−Free)

1000 Units / Box

†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.

P6KExxxARL Axial Lead 4000/Tape & Reel

P6KExxxARLG Axial Lead

(Pb−Free)

4000/Tape & Reel

AXIAL LEAD

CASE 017AA

PLASTIC

A = Assembly Location

P6KExxxA = Device Number

YY = Year

WW = Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

Uni−Directional TVS

IPP

VRWM

VCVBR

P6KE6.8A Series

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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

VCClamping Voltage @ IPP

VRWM Working Peak Reverse Voltage

IRMaximum Reverse Leakage Current @ VRWM

VBR Breakdown Voltage @ IT

ITTest Current

QVBR Maximum Temperature Coefficient of VBR

IFForward Current

VFForward Voltage @ IF

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

Device*

Device

Marking

VRWM

(Note 3) IR @ VRWM

Breakdown Voltage VC @ IPP (Note 5)

QVBR

VBR (Note 4) (V) @ ITVCIPP

VmAMin Nom Max mA V A %/°C

P6KE6.8A, G P6KE6.8A 5.8 1000 6.45 6.80 7.14 10 10.5 57 0.057

P6KE7.5ARLG P6KE7.5A 6.4 500 7.13 7.51 7.88 10 11.3 53 0.061

P6KE10AG P6KE10A 8.55 10 9.5 10 10.5 1 14.5 41 0.073

P6KE12A, G P6KE12A 10.2 5 11.4 12 12.6 1 16.7 36 0.078

P6KE13AG P6KE13A 11.1 5 12.4 13.05 13.7 1 18.2 33 0.081

P6KE15AG P6KE15A 12.8 5 14.3 15.05 15.8 1 21.2 28 0.084

P6KE16A, G P6KE16A 13.6 5 15.2 16 16.8 1 22.5 27 0.086

P6KE18AG P6KE18A 15.3 5 17.1 18 18.9 1 25.2 24 0.088

P6KE20ARLG P6KE20A 17.1 5 19 20 21 1 27.7 22 0.09

P6KE22ARLG P6KE22A 18.8 5 20.9 22 23.1 1 30.6 20 0.092

P6KE24ARLG P6KE24A 20.5 5 22.8 24 25.2 1 33.2 18 0.094

P6KE27ARLG P6KE27A 23.1 5 25.7 27.05 28.4 1 37.5 16 0.096

P6KE30ARLG P6KE30A 25.6 5 28.5 30 31.5 1 41.4 14.4 0.097

P6KE33AG P6KE33A 28.2 5 31.4 33.05 34.7 1 45.7 13.2 0.098

P6KE36AG P6KE36A 30.8 5 34.2 36 37.8 1 49.9 12 0.099

P6KE39AG P6KE39A 33.3 5 37.1 39.05 41 1 53.9 11.2 0.1

P6KE43AG P6KE43A 36.8 5 40.9 43.05 45.2 1 59.3 10.1 0.101

P6KE47AG P6KE47A 40.2 5 44.7 47.05 49.4 1 64.8 9.3 0.101

P6KE51AG P6KE51A 43.6 5 48.5 51.05 53.6 1 70.1 8.6 0.102

P6KE56AG P6KE56A 47.8 5 53.2 56 58.8 1 77 7.8 0.103

P6KE62ARLG P6KE62A 53 5 58.9 62 65.1 1 85 7.1 0.104

P6KE68AG P6KE68A 58.1 5 64.6 68 71.4 1 92 6.5 0.104

P6KE75ARLG P6KE75A 64.1 5 71.3 75.05 78.8 1 103 5.8 0.105

P6KE82ARLG P6KE82A 70.1 5 77.9 82 86.1 1 113 5.3 0.105

P6KE91ARLG P6KE91A 77.8 5 86.5 91 95.5 1 125 4.8 0.106

P6KE100ARLG P6KE100A 85.5 5 95 100 105 1 137 4.4 0.106

P6KE120ARLG P6KE120A 102 5 114 120 126 1 165 3.6 0.107

P6KE130AG P6KE130A 111 5 124 130.5 137 1 179 3.3 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 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.

P6KE6.8A Series

http://onsemi.com

100

0.1

0.1 ms1ms10ms 100 ms1ms 10ms

PP, PEAK POWER (kW)

, PULSE WIDTH

NONREPETITIVE PULSE

WAVEFORM SHOWN IN

FIGURE 4

Figure 1. Pulse Rating Curve

100

0 25 50 75 100 125 150 175 200

PEAK PULSE DERATING IN % OF

PEAK POWER OR CURRENT @ T

A= 25 C

TA, AMBIENT TEMPERATURE (C)

Figure 2. Pulse Derating Curve



DERATING FACTOR

1 ms

10 ms

0.7

0.5

0.3

0.05

0.1

0.2

0.01

0.02

0.03

0.07

100 ms

0.1 0.2 0.5 2 5 10 501 20 100

D, DUTY CYCLE (%)

PULSE WIDTH

10 ms

10,000

1000

100

0.1 1 10 100 1000

C, CAPACITANCE (pF)

VBR, BREAKDOWN VOLTAGE (VOLTS)

Figure 3. Capacitance versus Breakdown Voltage

MEASURED @

VRWM

MEASURED @

ZERO BIAS

100

001 2 3 4

t, TIME (ms)

VALUE (%)

tr ≤ 10 ms

PEAK VALUE − IPP

HALF VALUE −IPP

Figure 4. Pulse Waveform

PULSE WIDTH (tp) IS

DEFINED AS THAT

POINT WHERE THE

PEAK CURRENT

DECAYS TO 50% OF IPP

25 50 75 100 125 150 175 200

D, STEADY STATE POWER DISSIPATION (WATTS)

TL, LEAD TEMPERATURE C)

3/8″

Figure 5. Steady State Power Derating

Figure 6. Typical Derating Factor for Duty Cycle

P6KE6.8A Series

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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 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

Vin

Vin (TRANSIENT)

Zin

LOAD

OVERSHOOT DUE TO

INDUCTIVE EFFECTS

tD = TIME DELAY DUE TO CAPACITIVE EFFECT

t t

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 #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

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.

P6KE6.8A Series

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PACKAGE DIMENSIONS

SURMETIC 40, AXIAL LEAD

CASE 017AA−01

ISSUE O

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A0.330 0.350 8.38 8.89

B0.130 0.145 3.30 3.68

D0.037 0.043 0.94 1.09

F--- 0.050 --- 1.27

K1.000 1.250 25.40 31.75

NOTES:

1. CONTROLLING DIMENSION: INCH

2. LEAD DIAMETER AND FINISH NOT CONTROLLED

WITHIN DIMENSION F.

3. CATHODE BAND INDICATES POLARITY

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice

to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability

arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.

“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All

operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights

nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications

intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should

Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,

and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death

associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal

Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81−3−5773−3850

P6KE6.8A/D

Surmetic are trademarks of Semiconductor Components Industries, LLC.

LITERATURE FULFILLMENT:

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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada

Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada

Email: orderlit@onsemi.com

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