Semiconductor Components Industries, LLC, 2002

April, 2002 Rev. 5

Publication Order Number:

P6KE6.8A/D

P6KE6.8A Series

600 Watt Peak Power

Surmetict-40 Zener 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, low zener
i m p e d a n c e a n d f a s t r e s p o n s e t i m e . T h e s e d e v i c e s a r e
ON Semiconductor's exclusive, cost-effective, highly reliable
Surmetic

t 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.

Specification Features:

Working Peak Reverse Voltage Range 5.8 to 171 V

Peak Power 600 Watts @ 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

Maximum Temperature Coefficient Specified

UL 497B for Isolated Loop Circuit Protection

Response Time is typically < 1 ns

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:

230

_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.)

@ T

600

Watts

Steady State Power Dissipation

@ T

C, Lead Length = 3/8

Derated above T

= 75

5.0

Watts

mW/

Thermal Resistance, JunctiontoLead

C/W

Forward Surge Current (Note 2.)

@ T

= 25

FSM

100

Amps

Operating and Storage

Temperature Range

, T

stg

55 to

+175

1. Nonrepetitive current pulse per Figure 4 and derated above T

= 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.

*Please see P6KE6.8CA P6KE200CA for Bidirectional devices.

Device

Package

Shipping

ORDERING INFORMATION

P6KExxxA

Axial Lead

1000 Units/Box

http://onsemi.com

P6KExxxARL

Axial Lead

4000/Tape & Reel

AXIAL LEAD

CASE 17

STYLE 1

L = Assembly Location
P6KExxxA = ON Device Code
YY = Year
WW = Work Week

P6KE
xxxA

YYWW

Cathode

Anode

P6KE6.8A Series

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ELECTRICAL CHARACTERISTICS

= 25

C unless otherwise noted, V

= 3.5 V Max. @ I

(Note 6.)

= 50 A)

RWM

Breakdown Voltage

@ I

(Note 5.)

Device

RWM

(Note 3.)

@ V

RWM

(Note 4.) (Volts)

@ I

Device

Marking

Volts

Min

Nom

Max

Volts

P6KE6.8A

5.8

1000

6.45

6.80

7.14

10.5

0.057

P6KE7.5A

6.4

500

7.13

7.51

7.88

11.3

0.061

P6KE8.2A

7.02

200

7.79

8.2

8.61

12.1

0.065

P6KE9.1A

7.78

8.65

9.1

9.55

13.4

0.068

P6KE10A

8.55

9.5

10.5

14.5

0.073

P6KE11A

9.4

10.5

11.05

11.6

15.6

0.075

P6KE12A

10.2

11.4

12.6

16.7

0.078

P6KE13A

11.1

12.4

13.05

13.7

18.2

0.081

P6KE15A

12.8

14.3

15.05

15.8

21.2

0.084

P6KE16A

13.6

15.2

16.8

22.5

0.086

P6KE18A

15.3

17.1

18.9

25.2

0.088

P6KE20A

17.1

27.7

0.09

P6KE22A

18.8

20.9

23.1

30.6

0.092

P6KE24A

20.5

22.8

25.2

33.2

0.094

P6KE27A

23.1

25.7

27.05

28.4

37.5

0.096

P6KE30A

25.6

28.5

31.5

41.4

14.4

0.097

P6KE33A

28.2

31.4

33.05

34.7

45.7

13.2

0.098

P6KE36A

30.8

34.2

37.8

49.9

0.099

P6KE39A

33.3

37.1

39.05

53.9

11.2

0.1

P6KE43A

36.8

40.9

43.05

45.2

59.3

10.1

0.101

P6KE47A

40.2

44.7

47.05

49.4

64.8

9.3

0.101

P6KE51A

43.6

48.5

51.05

53.6

70.1

8.6

0.102

P6KE56A

47.8

53.2

58.8

7.8

0.103

P6KE62A

58.9

65.1

7.1

0.104

P6KE68A

58.1

64.6

71.4

6.5

0.104

P6KE75A

64.1

71.3

75.05

78.8

103

5.8

0.105

P6KE82A

70.1

77.9

86.1

113

5.3

0.105

P6KE91A

77.8

86.5

95.5

125

4.8

0.106

P6KE100A

85.5

100

105

137

4.4

0.106

P6KE110A

105

110.5

116

152

0.107

P6KE120A

102

114

120

126

165

3.6

0.107

P6KE130A

111

124

130.5

137

179

3.3

0.107

P6KE150A

128

143

150.5

158

207

2.9

0.108

P6KE160A

136

152

160

168

219

2.7

0.108

P6KE170A

145

162

170.5

179

234

2.6

0.108

P6KE180A

154

171

180

189

246

2.4

0.108

P6KE200A

171

190

200

210

274

2.2

0.108

3. A transient suppressor is normally selected according to the maximum working peak reverse voltage (V

RWM

), which should be equal to or

greater than the dc or continuous peak operating voltage level.

4. V

measured at pulse test current I

at an ambient temperature of 25

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.

P6KE6.8A Series

http://onsemi.com

100

0.1

100

1 ms

10 ms

, PEAK POWER (kW)

, PULSE WIDTH

NONREPETITIVE PULSE
WAVEFORM SHOWN IN
FIGURE 4

Figure 1. Pulse Rating Curve

100

125

150

175

200

PEAK PULSE DERA

TING IN % OF

PEAK POWER OR CURRENT

T A

= 25

, AMBIENT TEMPERATURE (

Figure 2. Pulse Derating Curve

DERA

TING F

ACT

1 ms

0.7

0.5

0.3

0.05

0.1

0.2

0.01

0.02

0.03

0.07

100

0.1

0.2

0.5

100

D, DUTY CYCLE (%)

PULSE WIDTH

10 ms

10,000

1000

100

0.1

100

1000

C, CAP

ACIT

ANCE (pF)

, BREAKDOWN VOLTAGE (VOLTS)

Figure 3. Capacitance versus Breakdown Voltage

MEASURED @
V

RWM

MEASURED @
ZERO BIAS

100

t, TIME (ms)

ALUE (%)

PEAK VALUE I

HALF VALUE

Figure 4. Pulse Waveform

PULSE WIDTH (t

) IS

DEFINED AS THAT
POINT WHERE THE
PEAK CURRENT
DECAYS TO 50% OF I

100

125

150

175

200

, STEADY

TE POWER DISSIP

TION (W

TTS)

, LEAD TEMPERATURE

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 Z

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

(TRANSIENT)

LOAD

OVERSHOOT DUE TO

INDUCTIVE EFFECTS

= TIME DELAY DUE TO CAPACITIVE EFFECT

Figure 7.

Figure 8.

P6KE6.8A Series

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UL RECOGNITION*

The entire series including the bidirectional CA suffix has

Underwriters Laboratory Recognition for the classification
of protectors (QVGV2) under the UL standard for safety
497B and File #E 116110. 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, CA P6KE200A, CA.

P6KE6.8A Series

http://onsemi.com

ON Semiconductor is a trademark and is a registered trademark 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.

PUBLICATION ORDERING INFORMATION

JAPAN: ON Semiconductor, Japan Customer Focus Center

4321 NishiGotanda, Shinagawaku, Tokyo, Japan 1410031
Phone: 81357402700
Email: r14525@onsemi.com

ON Semiconductor Website: http://onsemi.com

For additional information, please contact your local
Sales Representative.

P6KE6.8A/D

SURMETIC is a trademark of Semiconductor Components Industries, LLC.

Literature Fulfillment:

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Fax: 3036752176 or 8003443867 Toll Free USA/Canada
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N. American Technical Support: 8002829855 Toll Free USA/Canada

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