Semiconductor Components Industries, LLC, 2002
February, 2002 Rev. 2
1
Publication Order Number:
1.5KE6.8CA/D
1.5KE6.8CA Series
1500 Watt Mosorb
TM
Zener
Transient Voltage Suppressors
Bidirectional*
Mosorb devices are designed to protect voltage sensitive
components from high voltage, highenergy 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 axial leaded package and are ideally-suited for use in
communication systems, numerical controls, process controls,
medical equipment, business machines, power supplies and many
other industrial/ consumer applications, to protect CMOS, MOS and
Bipolar integrated circuits.
Specification Features:
Working Peak Reverse Voltage Range 5.8 V to 214 V
Peak Power 1500 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
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.)
@ T
L
25
C
P
PK
1500
Watts
Steady State Power Dissipation
@ T
L
75
C, Lead Length = 3/8
Derated above T
L
= 75
C
P
D
5.0
20
Watts
mW/
C
Thermal Resistance, JunctiontoLead
R
q
JL
20
C/W
Operating and Storage
Temperature Range
T
J
, T
stg
65 to
+175
C
1. Nonrepetitive current pulse per Figure 4 and derated above T
A
= 25
C per
Figure 2.
*Please see 1N6267A to 1N6306A (1.5KE6.8A 1.5KE250A)
for Unidirectional Devices
Device
Packaging
Shipping
ORDERING INFORMATION
1.5KExxCA
Axial Lead
500 Units/Box
1.5KExxCARL4
Axial Lead
AXIAL LEAD
CASE 41A
PLASTIC
http://onsemi.com
1500/Tape & Reel
L = Assembly Location
1N6xxxCA = JEDEC Device Code
1.5KExxxCA = ON Device Code
YY = Year
WW = Work Week
L
1N6
xxxCA
1.5KE
xxxCA
YYWW
BiDirectional TVS
I
PP
I
PP
V
I
I
R
I
T
I
T
I
R
V
RWM
V
C
V
BR
V
RWM
V
C
V
BR
1.5KE6.8CA Series
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2
ELECTRICAL CHARACTERISTICS
(T
A
= 25
C unless otherwise noted)
Symbol
Parameter
I
PP
Maximum Reverse Peak Pulse Current
V
C
Clamping Voltage @ I
PP
V
RWM
Working Peak Reverse Voltage
I
R
Maximum Reverse Leakage Current @ V
RWM
V
BR
Breakdown Voltage @ I
T
I
T
Test Current
Q
V
BR
Maximum Temperature Coefficient of V
BR
1.5KE6.8CA Series
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3
ELECTRICAL CHARACTERISTICS
(T
A
= 25
C unless otherwise noted.)
V
RWM
Breakdown Voltage
V
C
@ I
PP
(Note 3)
V
RWM
(Note 1)
I
R
@ V
RWM
V
BR
(Note 2) (Volts)
@ I
T
V
C
I
PP
Q
V
BR
Device
(Volts)
(
A)
Min
Nom
Max
(mA)
(Volts)
(A)
(%/
C)
1.5KE6.8CA
5.8
1000
6.45
6.8
7.14
10
10.5
143
0.057
1.5KE7.5CA
6.4
500
7.13
7.5
7.88
10
11.3
132
0.061
1.5KE8.2CA
7.02
200
7.79
8.2
8.61
10
12.1
124
0.065
1.5KE9.1CA
7.78
50
8.65
9.1
9.55
1
13.4
112
0.068
1.5KE10CA
8.55
10
9.5
10
10.5
1
14.5
103
0.073
1.5KE11CA
9.4
5
10.5
11
11.6
1
15.6
96
0.075
1.5KE12CA
10.2
5
11.4
12
12.6
1
16.7
90
0.078
1.5KE13CA
11.1
5
12.4
13
13.7
1
18.2
82
0.081
1.5KE15CA
12.8
5
14.3
15
15.8
1
21.2
71
0.084
1.5KE16CA
13.6
5
15.2
16
16.8
1
22.5
67
0.086
1.5KE18CA
15.3
5
17.1
18
18.9
1
25.2
59.5
0.088
1.5KE20CA
17.1
5
19
20
21
1
27.7
54
0.09
1.5KE22CA
18.8
5
20.9
22
23.1
1
30.6
49
0.092
1.5KE24CA
20.5
5
22.8
24
25.2
1
33.2
45
0.094
1.5KE27CA
23.1
5
25.7
27
28.4
1
37.5
40
0.096
1.5KE30CA
25.6
5
28.5
30
31.5
1
41.4
36
0.097
1.5KE33CA
28.2
5
31.4
33
34.7
1
45.7
33
0.098
1.5KE36CA
30.8
5
34.2
36
37.8
1
49.9
30
0.099
1.5KE39CA
33.3
5
37.1
39
41
1
53.9
28
0.1
1.5KE43CA
36.8
5
40.9
43
45.2
1
59.3
25.3
0.101
1.5KE47CA
40.2
5
44.7
47
49.4
1
64.8
23.2
0.101
1.5KE51CA
43.6
5
48.5
51
53.6
1
70.1
21.4
0.102
1.5KE56CA
47.8
5
53.2
56
58.8
1
77
19.5
0.103
1.5KE62CA
53
5
58.9
62
65.1
1
85
17.7
0.104
1.5KE68CA
58.1
5
64.6
68
71.4
1
92
16.3
0.104
1.5KE75CA
64.1
5
71.3
75
78.8
1
103
14.6
0.105
1.5KE82CA
70.1
5
77.9
82
86.1
1
113
13.3
0.105
1.5KE91CA
77.8
5
86.5
91
95.5
1
125
12
0.106
1.5KE100CA
85.5
5
95
100
105
1
137
11
0.106
1.5KE110CA
94
5
105
110
116
1
152
9.9
0.107
1.5KE120CA
102
5
114
120
126
1
165
9.1
0.107
1.5KE130CA
111
5
124
130
137
1
179
8.4
0.107
1.5KE150CA
128
5
143
150
158
1
207
7.2
0.108
1.5KE160CA
136
5
152
160
168
1
219
6.8
0.108
1.5KE170CA
145
5
162
170
179
1
234
6.4
0.108
1.5KE180CA
154
5
171
180
189
1
246
6.1
0.108
1.5KE200CA
171
5
190
200
210
1
274
5.5
0.108
1.5KE220CA
185
5
209
220
231
1
328
4.6
0.109
1.5KE250CA
214
5
237
250
263
1
344
5
0.109
1. 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.
2. V
BR
measured at pulse test current I
T
at an ambient temperature of 25
C.
3. Surge current waveform per Figure 4 and derate per Figures 1 and 2.
1.5KE6.8CA Series
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4
Figure 1. Pulse Rating Curve
100
80
60
40
20
0
0
25
50
75
100
125
150
175
200
PEAK PULSE DERA
TING IN % OF
PEAK POWER OR CURRENT
@
T
A
= 25
C
T
A
, AMBIENT TEMPERATURE (
_
C)
Figure 2. Pulse Derating Curve
5
4
3
2
1
25
50
75
100
125
150
175
200
P D
, STEADY
ST
A
TE POWER DISSIP
A
TION (W
A
TTS)
T
L
, LEAD TEMPERATURE (
_
C)
3/8
3/8
Figure 3. Steady State Power Derating
0
0
100
50
0
0
1
2
3
4
t, TIME (ms)
, V
ALUE (%)
tr
10
s
t
P
PEAK VALUE I
PP
HALF VALUE
I
PP
2
Figure 4. Pulse Waveform
PULSE WIDTH (t
P
) IS
DEFINED AS THAT
POINT WHERE THE
PEAK CURRENT
DECAYS TO 50% OF I
PP
.
1
s
10
s
100
s
1 ms
10 ms
100
10
1
t
P
, PULSE WIDTH
P
PK
, PEAK POWER (kW)
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 4
0.1
s
I PP
_
1N6373, ICTE-5, MPTE-5,
through
1N6389, ICTE-45, C, MPTE-45, C
1.5KE6.8CA
through
1.5KE200CA
Figure 5. Dynamic Impedance
1000
500
200
100
50
20
10
5
2
1
1000
500
200
100
50
20
10
5
2
1
0.3
0.5 0.7
1
2
3
5
7
10
20 30
V
BR
, INSTANTANEOUS INCREASE IN V
BR
ABOVE V
BR(NOM)
(VOLTS)
0.3
0.5 0.7
1
2
3
5
7
10
20 30
V
BR
, INSTANTANEOUS INCREASE IN V
BR
ABOVE V
BR(NOM)
(VOLTS)
I T
, TEST
CURRENT
(AMPS)
V
BR(NOM)
= 6.8 to 13 V
T
L
= 25
_
C
t
P
= 10
s
24 V
43 V
75 V
180 V
120 V
43 V
T
L
= 25
_
C
t
P
= 10
s
I T
, TEST
CURRENT
(AMPS)
V
BR(NOM)
= 6.8 to 13 V
24 V
20 V
20 V
1.5KE6.8CA Series
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5
Figure 6. Typical Derating Factor for Duty Cycle
DERA
TING F
ACT
OR
1 ms
10
s
1
0.7
0.5
0.3
0.05
0.1
0.2
0.01
0.02
0.03
0.07
100
s
0.1
0.2
0.5
2
5
10
50
1
20
100
D, DUTY CYCLE (%)
PULSE WIDTH
10 ms
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. These devices have
excellent response time, typically in the picosecond range
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
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.
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