© Semiconductor Components Industries, LLC, 2006
August, 2006 Rev. 4
1Publication Order Number:
P6KE6.8CA/D
P6KE6.8CA Series
600 Watt Peak Power
Surmetict−40 Zener
Transient Voltage
Suppressors
Bidirectional*
The P6KE6.8CA 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 Semiconductors 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 mA 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 PURPOSES:
230°C, 1/16” from the case for 10 seconds
POLARITY: Cathode band does not imply polarity
MOUNTING POSITION: Any
MAXIMUM RATINGS
Rating Symbol Value Unit
Peak Power Dissipation (Note 1.)
@ TL 25°C
PPK 600 Watts
Steady State Power Dissipation
@ TL 75°C, Lead Length = 3/8
Derated above TL = 75°C
PD5
50
Watts
mW/°C
Thermal Resistance,
JunctiontoLead
RqJL 20 °C/W
Operating and Storage
Temperature Range
TJ, Tstg 55 to +175 °C
1. Nonrepetitive current pulse per Figure 3 and derated above TA = 25°C
per Figure 2.
*Please see P6KE6.8A P6KE200A for Unidirectional devices.
Device Package Shipping
ORDERING INFORMATION
P6KExxxCA Axial Lead 1000 Units/Box
AXIAL LEAD
CASE 17
PLASTIC
P6KExxxCARL* Axial Lead 4000/Tape & Reel
L = Assembly Location
P6KExxxCA = ON Device Code
YY = Year
WW = Work Week
L
P6KE
xxxCA
YYWW
http://onsemi.com
*P6KE170CA Not Available in 4000/Tape & Reel
P6KE6.8CA Series
http://onsemi.com
2
ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted)
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 Variation of VBR BiDirectional TVS
IPP
IPP
V
I
IR
IT
IT
IR
VRWM
VCVBR
VRWM VC
VBR
P6KE6.8CA Series
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted.)
Device
Device
Marking
VRWM
(Note 1) IR @ VRWM
Breakdown Voltage VC @ IPP (Note 3)
QVBR
VBR (Note 2) (Volts) @ ITVCIPP
(Volts) (mA) Min Nom Max (mA) (Volts) (A) (%/°C)
P6KE6.8CA P6KE6.8CA 5.8 1000 6.45 6.80 7.14 10 10.5 57 0.057
P6KE7.5CA P6KE7.5CA 6.4 500 7.13 7.51 7.88 10 11.3 53 0.061
P6KE8.2CA P6KE8.2CA 7.02 200 7.79 8.2 8.61 10 12.1 50 0.065
P6KE9.1CA P6KE9.1CA 7.78 50 8.65 9.1 9.55 1 13.4 45 0.068
P6KE10CA P6KE10CA 8.55 10 9.5 10 10.5 1 14.5 41 0.073
P6KE11CA P6KE11CA 9.4 5 10.5 11.05 11.6 1 15.6 38 0.075
P6KE12CA P6KE12CA 10.2 5 11.4 12 12.6 1 16.7 36 0.078
P6KE13CA P6KE13CA 11.1 5 12.4 13.05 13.7 1 18.2 33 0.081
P6KE15CA P6KE15CA 12.8 5 14.3 15.05 15.8 1 21.2 28 0.084
P6KE16CA P6KE16CA 13.6 5 15.2 16 16.8 1 22.5 27 0.086
P6KE18CA P6KE18CA 15.3 5 17.1 18 18.9 1 25.2 24 0.088
P6KE20CA P6KE20CA 17.1 5 19 20 21 1 27.7 22 0.09
P6KE22CA P6KE22CA 18.8 5 20.9 22 23.1 1 30.6 20 0.092
P6KE24CA P6KE24CA 20.5 5 22.8 24 25.2 1 33.2 18 0.094
P6KE27CA P6KE27CA 23.1 5 25.7 27.05 28.4 1 37.5 16 0.096
P6KE30CA P6KE30CA 25.6 5 28.5 30 31.5 1 41.4 14.4 0.097
P6KE33CA P6KE33CA 28.2 5 31.4 33.05 34.7 1 45.7 13.2 0.098
P6KE36CA P6KE36CA 30.8 5 34.2 36 37.8 1 49.9 12 0.099
P6KE39CA P6KE39CA 33.3 5 37.1 39.05 41 1 53.9 11.2 0.1
P6KE43CA P6KE43CA 36.8 5 40.9 43.05 45.2 1 59.3 10.1 0.101
P6KE47CA P6KE47CA 40.2 5 44.7 47.05 49.4 1 64.8 9.3 0.101
P6KE51CA P6KE51CA 43.6 5 48.5 51.05 53.6 1 70.1 8.6 0.102
P6KE56CA P6KE56CA 47.8 5 53.2 56 58.8 1 77 7.8 0.103
P6KE62CA P6KE62CA 53 5 58.9 62 65.1 1 85 7.1 0.104
P6KE68CA P6KE68CA 58.1 5 64.6 68 71.4 1 92 6.5 0.104
P6KE75CA P6KE75CA 64.1 5 71.3 75.05 78.8 1 103 5.8 0.105
P6KE82CA P6KE82CA 70.1 5 77.9 82 86.1 1 113 5.3 0.105
P6KE91CA P6KE91CA 77.8 5 86.5 91 95.5 1 125 4.8 0.106
P6KE100CA P6KE100CA 85.5 5 95 100 105 1 137 4.4 0.106
P6KE110CA P6KE110CA 94 5 105 110.5 116 1 152 4 0.107
P6KE120CA P6KE120CA 102 5 114 120 126 1 165 3.6 0.107
P6KE130CA P6KE130CA 111 5 124 130.5 137 1 179 3.3 0.107
P6KE150CA P6KE150CA 128 5 143 150.5 158 1 207 2.9 0.108
P6KE160CA P6KE160CA 136 5 152 160 168 1 219 2.7 0.108
P6KE170CA* P6KE170CA* 145 5 162 170.5 179 1 234 2.6 0.108
P6KE180CA P6KE180CA 154 5 171 180 189 1 246 2.4 0.108
P6KE200CA P6KE200CA 171 5 190 200 210 1 274 2.2 0.108
1. 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.
2. VBR measured at pulse test current IT at an ambient temperature of 25°C.
3. Surge current waveform per Figure 3 and derate per Figures 1 and 2.
*Not Available in the 4,000/Tape & Reel.
P6KE6.8CA Series
http://onsemi.com
4
100
10
1
0.1
0.1 ms1ms10ms 100 ms1ms10ms
PP, PEAK POWER (kW)
tP
, PULSE WIDTH
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 3
Figure 1. Pulse Rating Curve
100
80
60
40
20
00 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
K
°
DERATING FACTOR
1 ms
10 ms
1
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
100
50
001 234
t, TIME (ms)
VALUE (%)
tP
PEAK VALUE IPP
HALF VALUE IPP
2
Figure 3. Pulse Waveform
PULSE WIDTH (tp) IS
DEFINED AS THAT
POINT WHERE THE
PEAK CURRENT
DECAYS TO 50% OF IPP
.
5
4
3
2
1
25 50 75 100 125 150 175 200
PD, STEADY STATE POWER DISSIPATION (WATTS)
TL, LEAD TEMPERATURE (°C)
3/8,
3/8,
Figure 4. Steady State Power Derating
0
0
Figure 5. Typical Derating Factor for Duty Cycle
tr 10 ms
P6KE6.8CA Series
http://onsemi.com
5
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 6.
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 7. 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 5. 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 5 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 5 is multiplied by the peak power value
of Figure 1 for the same pulse, the results follow the
expected trend.
TYPICAL PROTECTION CIRCUIT
Vin
VL
V
Vin
Vin (TRANSIENT)
VL
td
V
VL
Vin (TRANSIENT)
Zin
LOAD
OVERSHOOT DUE TO
INDUCTIVE EFFECTS
tD = TIME DELAY DUE TO CAPACITIVE EFFECT
tt
Figure 6. Figure 7.
P6KE6.8CA Series
http://onsemi.com
6
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.
P6KE6.8CA Series
http://onsemi.com
7
OUTLINE DIMENSIONS
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
K−−− 0.050 −−− 1.27
F1.000 1.250 25.40 31.75
NOTES:
1. CONTROLLING DIMENSION: INCH
2. LEAD FINISH AND DIAMETER UNCONTROLLED IN DIM F.
3. FOR BIDIRECTIONAL DIODE, CATHODE BAND DOES NOT
IMPLY POLARITY
600 Watt Peak Power Surmetict40
Transient Voltage Suppressors Axial Leaded
SURMETIC 40
CASE 1702
ISSUE C
B
D
F
K
A
F
K
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: 8002829855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81357733850
P6KE6.8CA/D
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 3036752175 or 8003443860 Toll Free USA/Canada
Fax: 3036752176 or 8003443867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
SURMETIC is a trademark of Semiconductor Components Industries, LLC.