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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 Surmetict 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:
http://onsemi.com
Cathode
Anode
•
•
•
•
•
•
•
•
•
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*
AXIAL LEAD
CASE 017AA
PLASTIC
Mechanical Characteristics:
CASE:
Void-free, Transfer-molded, Thermosetting plastic
FINISH:
All external surfaces are corrosion resistant and leads are
MARKING DIAGRAM
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
Peak Power Dissipation (Note 1) @ T
L
≤
25°C
Steady State Power Dissipation
@ T
L
≤
25°C, Lead Length = 3/8 in
Derated above T
L
= 50°C
Thermal Resistance, Junction−to−Lead
Forward Surge Current (Note 2) @ T
A
= 25°C
Operating and Storage Temperature Range
Symbol
P
PK
P
D
Value
600
5.0
50
R
qJL
I
FSM
T
J
, T
stg
20
100
−
55 to
+150
Unit
W
W
mW/°C
°C/W
A
°C
A
P6KE
xxxA
YYWWG
G
A
= Assembly Location
P6KExxxA = Device Number
YY
= Year
WW
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
P6KExxxA
P6KExxxAG
P6KExxxARL
P6KExxxARLG
Package
Axial Lead
Axial Lead
(Pb−Free)
Axial Lead
Shipping
†
1000 Units / Box
1000 Units / Box
4000/Tape & Reel
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 T
A
= 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.
©
Semiconductor Components Industries, LLC, 2009
Axial Lead 4000/Tape & Reel
(Pb−Free)
†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.
Publication Order Number:
P6KE6.8A/D
October, 2009
−
Rev. 10
1
P6KE6.8A Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless
otherwise noted, V
F
= 3.5 V Max. @ I
F
(Note 6) = 50 A)
Symbol
I
PP
V
C
V
RWM
I
R
V
BR
I
T
QV
BR
I
F
V
F
Parameter
Maximum Reverse Peak Pulse Current
Clamping Voltage @ I
PP
Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ V
RWM
Breakdown Voltage @ I
T
Test Current
Maximum Temperature Coefficient of V
BR
Forward Current
Forward Voltage @ I
F
I
PP
V
C
V
BR
V
RWM
V
I
F
I
I
R
V
F
I
T
Uni−Directional TVS
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted, V
F
= 3.5 V Max. @ I
F
(Note 6) = 50 A)
V
RWM
(Note 3)
V
5.8
6.4
8.55
10.2
11.1
12.8
13.6
15.3
17.1
18.8
20.5
23.1
25.6
28.2
30.8
33.3
36.8
40.2
43.6
47.8
53
58.1
64.1
70.1
77.8
85.5
102
111
Breakdown Voltage
I
R
@ V
RWM
mA
1000
500
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
V
BR
Min
6.45
7.13
9.5
11.4
12.4
14.3
15.2
17.1
19
20.9
22.8
25.7
28.5
31.4
34.2
37.1
40.9
44.7
48.5
53.2
58.9
64.6
71.3
77.9
86.5
95
114
124
(Note 4)
(V)
Nom
6.80
7.51
10
12
13.05
15.05
16
18
20
22
24
27.05
30
33.05
36
39.05
43.05
47.05
51.05
56
62
68
75.05
82
91
100
120
130.5
Max
7.14
7.88
10.5
12.6
13.7
15.8
16.8
18.9
21
23.1
25.2
28.4
31.5
34.7
37.8
41
45.2
49.4
53.6
58.8
65.1
71.4
78.8
86.1
95.5
105
126
137
@ I
T
mA
10
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
V
C
@ I
PP
(Note 5)
V
C
V
10.5
11.3
14.5
16.7
18.2
21.2
22.5
25.2
27.7
30.6
33.2
37.5
41.4
45.7
49.9
53.9
59.3
64.8
70.1
77
85
92
103
113
125
137
165
179
I
PP
A
57
53
41
36
33
28
27
24
22
20
18
16
14.4
13.2
12
11.2
10.1
9.3
8.6
7.8
7.1
6.5
5.8
5.3
4.8
4.4
3.6
3.3
QV
BR
%/°C
0.057
0.061
0.073
0.078
0.081
0.084
0.086
0.088
0.09
0.092
0.094
0.096
0.097
0.098
0.099
0.1
0.101
0.101
0.102
0.103
0.104
0.104
0.105
0.105
0.106
0.106
0.107
0.107
Device*
P6KE6.8A, G
P6KE7.5ARLG
P6KE10AG
P6KE12A, G
P6KE13AG
P6KE15AG
P6KE16A, G
P6KE18AG
P6KE20ARLG
P6KE22ARLG
P6KE24ARLG
P6KE27ARLG
P6KE30ARLG
P6KE33AG
P6KE36AG
P6KE39AG
P6KE43AG
P6KE47AG
P6KE51AG
P6KE56AG
P6KE62ARLG
P6KE68AG
P6KE75ARLG
P6KE82ARLG
P6KE91ARLG
P6KE100ARLG
P6KE120ARLG
P6KE130AG
Device
Marking
P6KE6.8A
P6KE7.5A
P6KE10A
P6KE12A
P6KE13A
P6KE15A
P6KE16A
P6KE18A
P6KE20A
P6KE22A
P6KE24A
P6KE27A
P6KE30A
P6KE33A
P6KE36A
P6KE39A
P6KE43A
P6KE47A
P6KE51A
P6KE56A
P6KE62A
P6KE68A
P6KE75A
P6KE82A
P6KE91A
P6KE100A
P6KE120A
P6KE130A
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 (V
RWM
), which should be equal to or
greater than the dc or continuous peak operating voltage level.
4. V
BR
measured at pulse test current I
T
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.
http://onsemi.com
2
P6KE6.8A Series
NONREPETITIVE PULSE
WAVEFORM SHOWN IN
FIGURE 4
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ T = 25 C
A
_
100
PPK , PEAK POWER (kW)
10
100
80
60
40
20
0
0
25
50
75
100 125 150 175
200
1
0.1
0.1
ms
1
ms
10
ms
100
ms
1 ms
10 ms
t
P
, PULSE WIDTH
T
A
, AMBIENT TEMPERATURE (_C)
Figure 1. Pulse Rating Curve
Figure 2. Pulse Derating Curve
t
r
≤
10
ms
10,000
C, CAPACITANCE (pF)
MEASURED @
ZERO BIAS
100
VALUE (%)
PEAK VALUE
−
I
PP
PULSE WIDTH (t
p
) IS
DEFINED AS THAT
POINT WHERE THE
PEAK CURRENT
DECAYS TO 50% OF I
PP
.
I
PP
2
1000
HALF VALUE
−
50
t
P
0
0
1
100
MEASURED @
V
RWM
10
0.1
1
10
100
V
BR
, BREAKDOWN VOLTAGE (VOLTS)
1000
2
3
t, TIME (ms)
4
Figure 3. Capacitance versus Breakdown Voltage
Figure 4. Pulse Waveform
PD, STEADY STATE POWER DISSIPATION (WATTS)
3/8″
5
4
3
2
1
0
0
25
50
75 100 125 150 175
T
L
, LEAD TEMPERATURE
_C)
200
DERATING FACTOR
3/8″
1
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.01
10
ms
0.1
0.2
0.5
1
2
5
10
D, DUTY CYCLE (%)
20
50 100
PULSE WIDTH
10 ms
1 ms
100
ms
Figure 5. Steady State Power Derating
Figure 6. Typical Derating Factor for Duty Cycle
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3
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 Z
in
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
Z
in
V
in
LOAD
V
L
V
V
in
(TRANSIENT)
V
L
V
OVERSHOOT DUE TO
INDUCTIVE EFFECTS
V
in
(TRANSIENT)
V
L
V
in
t
d
t
D
= TIME DELAY DUE TO CAPACITIVE EFFECT
t
Figure 7.
Figure 8.
t
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.
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4
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