MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
Zener Transient Voltage Suppressors
Undirectional and Bidirectional
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. The P6KE6.8A series is supplied
in Motorola’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:
•
Standard Zener Voltage Range — 6.8 to 200 Volts
•
Peak Power — 600 Watts @ 1 ms
•
Maximum Clamp Voltage @ Peak Pulse Current
•
Low Leakage < 5
µA
Above 10 Volts
•
Maximum Temperature Coefficient Specified
•
UL Recognition
•
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
POLARITY:
Cathode indicated by polarity band. When operated in zener mode, will be
positive with respect to anode
MOUNTING POSITION:
Any
WAFER FAB LOCATION:
Phoenix, Arizona
ASSEMBLY/TEST LOCATION:
Seoul, Korea
MAXIMUM RATINGS
Rating
Peak Power Dissipation (1)
@ TL
≤
25°C
Steady State Power Dissipation
@ TL
≤
75°C, Lead Length = 3/8″
Derated above TL = 75°C
Forward Surge Current (2)
@ TA = 25°C
Operating and Storage Temperature Range
Lead Temperature not less than 1/16″ from the case for 10 seconds: 230°C
NOTES: 1. Nonrepetitive current pulse per Figure 4 and derated above TA = 25°C per Figure 2.
NOTES:
2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
P6KE6.8A
through
P6KE200A
ZENER OVERVOLTAGE
TRANSIENT
SUPPRESSORS
6.8–200 VOLT
600 WATT PEAK POWER
5 WATTS STEADY STATE
CASE 17, Style 1
PLASTIC
Symbol
PPK
PD
Value
600
5
50
Unit
Watts
Watts
mW/°C
Amps
°C
IFSM
TJ, Tstg
100
– 65 to +175
600 Watt Peak Power Data Sheet
4-7
Motorola TVS/Zener Device Data
P6KE6.8A through P6KE200A
ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted) VF = 3.5 V Max, IF** = 50 A
(except bidirectional devices).
Breakdown Voltage*
VBR
(Volts)
Device
Min
6.45
7.13
7.79
8.65
9.5
10.5
11.4
12.4
Nom
6.8
7.5
8.2
9.1
10
11
12
13
Max
7.14
7.88
8.61
9.55
10.5
11.6
12.6
13.7
Working Peak
Reverse
Voltage
VRWM
(Volts)
5.8
6.4
7.02
7.78
8.55
9.4
10.2
11.1
Maximum
Reverse
Leakage
@ VRWM
IR (µA)
1000
500
200
50
10
5
5
5
Maximum
Reverse
Surge
Current IRSM
{
(Amps)
57
53
50
45
41
38
36
33
Maximum
Reverse Voltage
@ IRSM
(Clamping Voltage)
VRSM (Volts)
10.5
11.3
12.1
13.4
14.5
15.6
16.7
18.2
Maximum
Temperature
Coefficient
of VBR (%/°C)
0.057
0.061
0.065
0.068
0.073
0.075
0.078
0.081
@ IT
(mA)
10
10
10
1
1
1
1
1
P6KE6.8A
P6KE7.5A
P6KE8.2A
P6KE9.1A
P6KE10A
P6KE11A
P6KE12A
P6KE13A
P6KE15A
P6KE16A
P6KE18A
P6KE20A
P6KE22A
P6KE24A
P6KE27A
P6KE30A
P6KE33A
P6KE36A
P6KE39A
P6KE43A
P6KE47A
P6KE51A
P6KE56A
P6KE62A
P6KE68A
P6KE75A
P6KE82A
P6KE91A
P6KE100A
P6KE110A
P6KE120A
P6KE130A
P6KE150A
P6KE160A
P6KE170A
P6KE180A
P6KE200A
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
105
114
124
143
152
162
171
190
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
110
120
130
150
160
170
180
200
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
116
126
137
158
168
179
189
210
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
1
1
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
94
102
111
128
136
145
154
171
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
5
5
5
5
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
4
3.6
3.3
2.9
2.7
2.6
2.4
2.2
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
152
165
179
207
219
234
246
274
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
0.107
0.108
0.108
0.108
0.108
0.108
***
VBR measured after IT applied for 300
µs,
IT = square wave pulse or equivalent.
***
1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
{
Surge current waveform per Figure 4 and derate per Figure 2.*
FOR BIDIRECTIONAL APPLICATIONS —
USE CA SUFFIX for P6KE6.8CA through P6KE200CA.
Electrical characteristics apply in both directions.
Preferred Bidirectional Devices —
P6KE7.5CA
P6KE11CA
P6KE22CA
P6KE27CA
P6KE20CA
P6KE30CA
600 Watt Peak Power Data Sheet
4-8
Motorola TVS/Zener Device Data
P6KE6.8A through P6KE200A
100
NONREPETITIVE PULSE
WAVEFORM SHOWN IN
FIGURE 4
PP, PEAK POWER (kW)
10
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ TA= 25
°
C
10 ms
100
80
60
40
20
0
0
25
50
75
100
125
150
175
200
1
0.1
0.1
µs
1
µs
10
µs
100
µs
1 ms
tP, PULSE WIDTH
TA, AMBIENT TEMPERATURE (°C)
Figure 1. Pulse Rating Curve
Figure 2. Pulse Derating Curve
PULSE WIDTH (tp) IS DEFINED
AS THAT POINT WHERE THE
PEAK CURRENT DECAYS TO 50%
OF IRSM.
tr
≤
10
µs
IRSM
2
tr
10,000
C, CAPACITANCE (pF)
100
VALUE (%)
MEASURED @
ZERO BIAS
1000
PEAK VALUE — IRSM
HALF VALUE –
50
100
MEASURED @
STAND-OFF
VOLTAGE (VR)
0.1
1
10
100
VBR, BREAKDOWN VOLTAGE (VOLTS)
1000
0
0
tP
10
1
2
3
t, TIME (ms)
4
Figure 3. Capacitance versus Breakdown Voltage
Figure 4. Pulse Waveform
PD , STEADY STATE POWER DISSIPATION (WATTS)
3/8″
DERATING FACTOR
5
4
3
2
1
0
0
25
50
75
100
125 150
175
TL, LEAD TEMPERATURE (°C)
200
3/8″
1
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
10
µs
0.01
0.1
0.2
0.5
1
2
5
10
D, DUTY CYCLE (%)
20
50 100
PULSE WIDTH
10 ms
1 ms
100
µs
Figure 5. Steady State Power Derating
Figure 6. Typical Derating Factor for Duty Cycle
Devices listed in bold, italic are Motorola preferred devices.
Motorola TVS/Zener Device Data
600 Watt Peak Power Data Sheet
4-9
P6KE6.8A through P6KE200A
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 A.
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 B. 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 over-
shoot. 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
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.
TYPICAL PROTECTION CIRCUIT
Zin
Vin
LOAD
VL
V
Vin (TRANSIENT)
VL
V
OVERSHOOT DUE TO
INDUCTIVE EFFECTS
Vin (TRANSIENT)
VL
Vin
td
tD = TIME DELAY DUE TO CAPACITIVE EFFECT
t
t
Figure 7.
Figure 8.
600 Watt Peak Power Data Sheet
4-10
Motorola TVS/Zener Device Data
P6KE6.8A through P6KE200A
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 flammabil-
ity test for the package material, we have been recognized for
much more to be included in their protector category.
Devices listed in bold, italic are Motorola preferred devices.
Motorola TVS/Zener Device Data
600 Watt Peak Power Data Sheet
4-11
