ON Semiconductor P6KE6.8A Technical data

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P6KE6.8A Series

600 Watt Peak Power
Surmetic-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
impedance 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.

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 µA above 10 V

• Maximum Temperature Coefficient Specified

• UL 497B for Isolated Loop Circuit Protection

• Response Time is typically < 1 ns

Mechanical Characteristics:

Void-free, Transfer-molded, Thermosetting plastic

CASE:
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

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Cathode Anode

AXIAL LEAD

CASE 17
STYLE 1

L
P6KE
xxxA
YYWW

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

MAXIMUM RATINGS

Rating Symbol Value Unit

Peak Power Dissipation (Note 1.)

≤ 25°C

@ T

L

Steady State Power Dissipation

@ T

≤ 75°C, Lead Length = 3/8″

L

Derated above T
Thermal Resistance, Junction–to–Lead R
Forward Surge Current (Note 2.)

= 25°C

@ T

A

Operating and Storage

Temperature Range

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.

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

 Semiconductor Components Industries, LLC, 2002

April, 2002 – Rev. 5

= 75°C

L

P

P

I

FSM

TJ, T

PK



600 Watts

D

JL

stg

5.0

50
20 °C/W

100 Amps

– 55 to

+175

Watts

mW/°C

°C

1 Publication Order Number:

ORDERING INFORMATION

Device Package Shipping

P6KExxxA Axial Lead 1000 Units/Box
P6KExxxARL Axial Lead 4000/Tape & Reel

P6KE6.8A/D

P6KE6.8A Series

ELECTRICAL CHARACTERISTICS (T

otherwise noted, V

Symbol

I

PP

V

C

V

RWM

I

R

V

BR

I

T

V

BR

I

F

V

F

= 3.5 V Max. @ IF (Note 6.) = 50 A)

F

Parameter

Maximum Reverse Peak Pulse Current
Clamping Voltage @ I

PP

Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ V
Breakdown Voltage @ I

T

Test Current
Maximum Temperature Coefficient of V
Forward Current
Forward Voltage @ I

F

= 25°C unless

A

RWM

BR

VCV

V

RWM

BR

Uni–Directional TVS

I

I

F

I

V

R

F

I

T

I

PP

V

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2

P6KE6.8A Series

V

Devi

ELECTRICAL CHARACTERISTICS (T

RWM

(Note 3.)

Volts µA Min Nom Max mA Volts A %/°C

Device

ce

Marking

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

A

Breakdown Voltage VC @ IPP (Note 5.)

IR @ V

RWM

VBR (Note 4.) (Volts) @ I

V

T

C

I

PP

P6KE6.8A P6KE6.8A 5.8 1000 6.45 6.80 7.14 10 10.5 57 0.057
P6KE7.5A P6KE7.5A 6.4 500 7.13 7.51 7.88 10 11.3 53 0.061
P6KE8.2A P6KE8.2A 7.02 200 7.79 8.2 8.61 10 12.1 50 0.065
P6KE9.1A P6KE9.1A 7.78 50 8.65 9.1 9.55 1 13.4 45 0.068

P6KE10A P6KE10A 8.55 10 9.5 10 10.5 1 14.5 41 0.073
P6KE11A P6KE11A 9.4 5 10.5 11.05 11.6 1 15.6 38 0.075
P6KE12A P6KE12A 10.2 5 11.4 12 12.6 1 16.7 36 0.078
P6KE13A P6KE13A 11.1 5 12.4 13.05 13.7 1 18.2 33 0.081

P6KE15A P6KE15A 12.8 5 14.3 15.05 15.8 1 21.2 28 0.084
P6KE16A P6KE16A 13.6 5 15.2 16 16.8 1 22.5 27 0.086
P6KE18A P6KE18A 15.3 5 17.1 18 18.9 1 25.2 24 0.088
P6KE20A P6KE20A 17.1 5 19 20 21 1 27.7 22 0.09

P6KE22A P6KE22A 18.8 5 20.9 22 23.1 1 30.6 20 0.092
P6KE24A P6KE24A 20.5 5 22.8 24 25.2 1 33.2 18 0.094
P6KE27A P6KE27A 23.1 5 25.7 27.05 28.4 1 37.5 16 0.096
P6KE30A P6KE30A 25.6 5 28.5 30 31.5 1 41.4 14.4 0.097

P6KE33A P6KE33A 28.2 5 31.4 33.05 34.7 1 45.7 13.2 0.098
P6KE36A P6KE36A 30.8 5 34.2 36 37.8 1 49.9 12 0.099
P6KE39A P6KE39A 33.3 5 37.1 39.05 41 1 53.9 11.2 0.1
P6KE43A P6KE43A 36.8 5 40.9 43.05 45.2 1 59.3 10.1 0.101

P6KE47A P6KE47A 40.2 5 44.7 47.05 49.4 1 64.8 9.3 0.101
P6KE51A P6KE51A 43.6 5 48.5 51.05 53.6 1 70.1 8.6 0.102
P6KE56A P6KE56A 47.8 5 53.2 56 58.8 1 77 7.8 0.103
P6KE62A P6KE62A 53 5 58.9 62 65.1 1 85 7.1 0.104

P6KE68A P6KE68A 58.1 5 64.6 68 71.4 1 92 6.5 0.104
P6KE75A P6KE75A 64.1 5 71.3 75.05 78.8 1 103 5.8 0.105
P6KE82A P6KE82A 70.1 5 77.9 82 86.1 1 113 5.3 0.105
P6KE91A P6KE91A 77.8 5 86.5 91 95.5 1 125 4.8 0.106

P6KE100A P6KE100A 85.5 5 95 100 105 1 137 4.4 0.106
P6KE110A P6KE110A 94 5 105 110.5 116 1 152 4 0.107
P6KE120A P6KE120A 102 5 114 120 126 1 165 3.6 0.107
P6KE130A P6KE130A 111 5 124 130.5 137 1 179 3.3 0.107

P6KE150A P6KE150A 128 5 143 150.5 158 1 207 2.9 0.108
P6KE160A P6KE160A 136 5 152 160 168 1 219 2.7 0.108
P6KE170A P6KE170A 145 5 162 170.5 179 1 234 2.6 0.108
P6KE180A P6KE180A 154 5 171 180 189 1 246 2.4 0.108
P6KE200A 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 (V

), which should be equal to or

RWM

greater than the dc or continuous peak operating voltage level.

4. V

measured at pulse test current IT at an ambient temperature of 25°C

BR

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.

V

BR

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3

100

10

P6KE6.8A Series

NONREPETITIVE PULSE
WAVEFORM SHOWN IN
FIGURE 4



= 25 C

A

100

80

1

, PEAK POWER (kW)

K

P

P

0.1

0.1 µs1µs10µs 100 µs 1 ms 10 ms
tP, PULSE WIDTH

Figure 1. Pulse Rating Curve

10,000

MEASURED @

1000

100

C, CAPACITANCE (pF)

10

0.1 1 10 100 1000

MEASURED @
V

RWM

VBR, BREAKDOWN VOLTAGE (VOLTS)

ZERO BIAS

Figure 3. Capacitance versus Breakdown Voltage

60
40

20

PEAK PULSE DERATING IN % OF

0

0 25 50 75 100 125 150 175 200

PEAK POWER OR CURRENT @ T

TA, AMBIENT TEMPERATURE (C)

Figure 2. Pulse Derating Curve

PULSE WIDTH (tp) IS

tr ≤ 10 µs

100

VALUE (%)

50

0

PEAK VALUE – I

t

P

01 2 34

PP

HALF VALUE –

t, TIME (ms)

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

I

PP

2

Figure 4. Pulse Waveform

PP

.

5

4
3

2
1

0

, STEADY STATE POWER DISSIPATION (WATTS)

D

P

0

25 50 75 100 125 150 175 200

TL, LEAD TEMPERATURE C)

Figure 5. Steady State Power Derating

3/8″

3/8″

0.07

0.05

0.03

DERATING FACTOR

0.02

0.01

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4

1

0.7

0.5

0.3

0.2

0.1

0.1 0.2 0.5 2 5 10 501 20 100
D, DUTY CYCLE (%)

PULSE WIDTH

10 ms

1 ms

100 µs

10 µs

Figure 6. Typical Derating Factor for Duty Cycle

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,

TYPICAL PROTECTION CIRCUIT

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

in

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 µs 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.

V

V

in

t

d

t

= TIME DELAY DUE TO CAPACITIVE EFFECT

D

Figure 7. Figure 8.

Z

in

V

in

Vin (TRANSIENT)

V

L

tt

LOAD

OVERSHOOT DUE TO

V

INDUCTIVE EFFECTS

V

L

Vin (TRANSIENT)

V

L

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5

P6KE6.8A Series

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.

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P6KE6.8A Series

OUTLINE DIMENSIONS

Transient Voltage Suppressors – Axial Leaded

600 Watt Peak Power Surmetic–40

SURMETIC 40

CASE17–02

ISSUE C

B

D

K

F

A

F

K

NOTES:

1. CONTROLLED DIMENSION: INCH

2. LEAD FINISH AND DIAMETER UNCONTROLLED IN DIM F.

3. CATHODE BAND INDICATES POLARITY

DIM MIN MAX MIN MAX

A 0.330 0.350 8.38 8.89
B 0.130 0.145 3.30 3.68
D 0.037 0.043 0.94 1.09
K --- 0.050 --- 1.27
F 1.000 1.250 25.40 31.75

STYLE 1:

PIN 1. ANODE

2. CATHODE

MILLIMETERSINCHES

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P6KE6.8A Series

SURMETIC is a trademark of Semiconductor Components Industries, LLC.

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

Literature Fulfillment:

Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA

Phone: [phone] or 800–344–3860 Toll Free USA/Canada
Fax: [phone] or 800–344–3867 Toll Free USA/Canada
Email: [e-mail]

N. American Technical Support: 800–282–9855 Toll Free USA/Canada

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JAPAN: ON Semiconductor, Japan Customer Focus Center

4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031

Phone: [phone]
Email: [e-mail]

ON Semiconductor Website: http://onsemi.com

For additional information, please contact your local
Sales Representative.

P6KE6.8A/D

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