MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
5 Watt Surmetic 40
Silicon Zener Diodes
This is a complete series of 5 Watt Zener Diodes with tight limits and better operating
characteristics that reflect the superior capabilities of silicon-oxide-passivated junctions.
All this is in an axial-lead, transfer-molded plastic package that offers protection in all com-
mon environmental conditions.
Specification Features:
•
Up to 180 Watt Surge Rating @ 8.3 ms
•
Maximum Limits Guaranteed on Seven Electrical Parameters
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 color band. When operated in zener mode, cathode
will be positive with respect to anode
MOUNTING POSITION:
Any
WEIGHT:
0.7 gram (approx)
WAFER FAB LOCATION:
Phoenix, Arizona
ASSEMBLY/TEST LOCATION:
Seoul, Korea
1N5333B
through
1N5388B
5 WATT
ZENER REGULATOR
DIODES
3.3–200 VOLTS
CASE 17
PLASTIC
MAXIMUM RATINGS
Rating
DC Power Dissipation @ TL = 75°C
Lead Length = 3/8″
Derate above 75°C
Operating and Storage Junction Temperature Range
Symbol
PD
Value
5
40
TJ, Tstg
– 65 to +200
Unit
Watts
mW/°C
°C
P D , MAXIMUM POWER DISSIPATION (WATTS)
8
L = 1/8″
6
L = 3/8″
4
L = 1″
2
L = LEAD LENGTH
L =
TO HEAT SINK
L =
(SEE FIGURE 5)
0
0
20
40
60
80
100
120
140
160
180
200
TL, LEAD TEMPERATURE (°C)
Figure 1. Power Temperature Derating Curve
5 Watt Surmetic 40 Data Sheet
6-1
Motorola TVS/Zener Device Data
1N5333B through 1N5388B
ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted, VF = 1.2 Max @ IF = 1 A for all types)
Nominal
Zener
Voltage
VZ @ IZT
Volts
(Note 2)
Max Zener Impedance
Test
Current
IZT
mA
ZZT @IZT
Ohms
(Note 2)
ZZK @ IZK = 1 mA
Ohms
(Note 2)
Max Reverse
Leakage Current
Max
Surge
Current
ir, Amps
(Note 3)
Maximum
Regulator
Current
Max Voltage
IZM
Regulation
mA
∆
VZ, Volt
(Note 5)
(Note 4)
JEDEC
Type No.
(Note 1)
IR
µA
@
VR
Volts
1N5333B
1N5334B
1N5335B
1N5336B
1N5337B
1N5338B
1N5339B
1N5340B
1N5341B
1N5342B
1N5343B
1N5344B
1N5345B
1N5346B
1N5347B
1N5348B
1N5349B
1N5350B
1N5351B
1N5352B
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
380
350
320
290
260
240
220
200
200
175
175
150
150
150
125
125
100
100
100
75
3
2.5
2
2
2
1.5
1
1
1
1
1.5
1.5
2
2
2
2.5
2.5
2.5
2.5
2.5
400
500
500
500
450
400
400
300
200
200
200
200
200
150
125
125
125
100
75
75
300
150
50
10
5
1
1
1
1
10
10
10
10
7.5
5
5
2
1
1
1
1
1
1
1
1
1
2
3
3
5.2
5.7
6.2
6.6
6.9
7.6
8.4
9.1
9.9
10.6
11.5
20
18.7
17.6
16.4
15.3
14.4
13.4
12.7
12.4
11.5
10.7
10
9.5
9.2
8.6
8
7.5
7
6.7
6.3
0.85
0.8
0.54
0.49
0.44
0.39
0.25
0.19
0.1
0.15
0.15
0.2
0.2
0.22
0.22
0.25
0.25
0.25
0.25
0.25
1440
1320
1220
1100
1010
930
865
790
765
700
630
580
545
520
475
430
395
365
340
315
1N5353B
1N5354B
1N5355B
1N5356B
1N5357B
1N5358B
1N5359B
1N5360B
1N5361B
1N5362B
1N5363B
1N5364B
1N5365B
1N5366B
1N5367B
16
17
18
19
20
22
24
25
27
28
30
33
36
39
43
75
70
65
65
65
50
50
50
50
50
40
40
30
30
30
2.5
2.5
2.5
3
3
3.5
3.5
4
5
6
8
10
11
14
20
75
75
75
75
75
75
100
110
120
130
140
150
160
170
190
1
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
12.2
12.9
13.7
14.4
15.2
16.7
18.2
19
20.6
21.2
22.8
25.1
27.4
29.7
32.7
6
5.8
5.5
5.3
5.1
4.7
4.4
4.3
4.1
3.9
3.7
3.5
3.3
3.1
2.8
0.3
0.35
0.4
0.4
0.4
0.45
0.55
0.55
0.6
0.6
0.6
0.6
0.65
0.65
0.7
295
280
265
250
237
216
198
190
176
170
158
144
132
122
110
1N5368B
1N5369B
1N5370B
1N5371B
1N5372B
1N5373B
1N5374B
1N5375B
1N5376B
1N5377B
1N5378B
1N5379B
1N5380B
1N5381B
1N5382B
47
51
56
60
62
68
75
82
87
91
100
110
120
130
140
25
25
20
20
20
20
20
15
15
15
12
12
10
10
8
25
27
35
40
42
44
45
65
75
75
90
125
170
190
230
210
230
280
350
400
500
620
720
760
760
800
1000
1150
1250
1500
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
35.8
38.8
42.6
42.5
47.1
51.7
56
62.2
66
69.2
76
83.6
91.2
98.8
106
2.7
2.5
2.3
2.2
2.1
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
0.8
0.9
1
1.2
1.35
1.5
1.6
1.8
2
2.2
2.5
2.5
2.5
2.5
2.5
100
93
86
79
76
70
63
58
54.5
52.5
47.5
43
39.5
36.6
34
(continued)
Devices listed in bold, italic are Motorola preferred devices.
5 Watt Surmetic 40 Data Sheet
6-2
Motorola TVS/Zener Device Data
1N5333B through 1N5388B
ELECTRICAL CHARACTERISTICS — continued
(TA = 25°C unless otherwise noted, VF = 1.2 Max @ IF = 1 A for all types)
Nominal
Zener
Voltage
VZ @ IZT
Volts
(Note 2)
Max Zener Impedance
Test
Current
IZT
mA
ZZT @IZT
Ohms
(Note 2)
ZZK @ IZK = 1 mA
Ohms
(Note 2)
Max Reverse
Leakage Current
Max
Surge
Current
ir, Amps
(Note 3)
Maximum
Regulator
Current
Max Voltage
IZM
Regulation
mA
∆
VZ, Volt
(Note 5)
(Note 4)
JEDEC
Type No.
(Note 1)
IR
µA
@
VR
Volts
1N5383B
1N5384B
1N5385B
1N5386B
1N5387B
1N5388B
150
160
170
180
190
200
8
8
8
5
5
5
330
350
380
430
450
480
1500
1650
1750
1750
1850
1850
0.5
0.5
0.5
0.5
0.5
0.5
114
122
129
137
144
152
1.1
1.1
1
1
0.9
0.9
3
3
3
4
5
5
31.6
29.4
28
26.4
25
23.6
NOTE 1. TOLERANCE AND TYPE NUMBER DESIGNATION
The JEDEC type numbers shown indicate a tolerance of
±5%.
NOTE 4. VOLTAGE REGULATION (∆VZ)
Test conditions for voltage regulation are as follows: VZ measurements are made at 10% and
then at 50% of the IZ max value listed in the electrical characteristics table. The test current
time duration for each VZ measurement is 40
±
10 ms. (TA = 25°C +8, –2°C). Mounting contact
located as specified in Note 2.
NOTE 2. ZENER VOLTAGE (VZ) AND IMPEDANCE (Z ZT & ZZK)
Test conditions for zener voltage and impedance are as follows: IZ is applied 40
±
10 ms prior
to reading. Mounting contacts are located 3/8″ to 1/2″ from the inside edge of mounting clips
to the body of the diode. (TA = 25°C +8, –2°C).
NOTE 5. MAXIMUM REGULATOR CURRENT (IZM)
The maximum current shown is based on the maximum voltage of a 5% type unit, therefore,
it applies only to the B-suffix device. The actual IZM for any device may not exceed the value
of 5 watts divided by the actual VZ of the device. TL = 75°C at 3/8″ maximum from the device
body.
NOTE 3. SURGE CURRENT (i r)
Surge current is specified as the maximum allowable peak, non-recurrent square-wave cur-
rent with a pulse width, PW, of 8.3 ms. The data given in Figure 6 may be used to find the
maximum surge current for a square wave of any pulse width between 1ms and 1000 ms by
plotting the applicable points on logarithmic paper. Examples of this, using the 3.3 V and
200 V zeners, are shown in Figure 7. Mounting contact located as specified in Note 3. (TA =
25°C +8, –2°C.)
NOTE 6. SPECIALS AVAILABLE INCLUDE:
Nominal zener voltages between the voltages shown and tighter voltage tolerance such as
±1%
and
±2%.
Consult factory.
TEMPERATURE COEFFICIENTS
θV
Z , TEMPERATURE COEFFICIENT
(mV/°C) @ I ZT
8
6
4
2
RANGE
0
–2
3
4
7
5
6
8
VZ, ZENER VOLTAGE @ IZT (VOLTS)
9
10
θV
Z , TEMPERATURE COEFFICIENT
(mV/°C) @ I ZT
10
300
200
100
50
30
20
10
5
0
20
40
60 80 100 120 140 160 180
VZ, ZENER VOLTAGE @ IZT (VOLTS)
200 220
RANGE
Figure 2. Temperature Coefficient-Range
for Units 3 to 10 Volts
Figure 3. Temperature Coefficient-Range
for Units 10 to 220 Volts
Devices listed in bold, italic are Motorola preferred devices.
Motorola TVS/Zener Device Data
5 Watt Surmetic 40 Data Sheet
6-3
1N5333B through 1N5388B
θ
JL (t, D), TRANSIENT THERMAL RESISTANCE
JUNCTION-TO-LEAD (
°
C/W)
20
10
5
2
1
0.5
D=0
0.2
0.00
1
0.00
5
0.01
D = 0.5
D = 0.2
D = 0.1
D = 0.05
D = 0.01
NOTE: BELOW 0.1 SECOND, THERMAL
NOTE:
RESPONSE CURVE IS APPLICABLE
NOTE:
TO ANY LEAD LENGTH (L).
0.05
0.1
DUTY CYCLE, D = t1/t2
SINGLE PULSE
∆
TJL =
θ
JL(t)PPK
REPETITIVE PULSES
∆
TJL =
θ
JL(t, D)PPK
0.5
1
5
10
20
50
100
PPK
t1
t2
t, TIME (SECONDS)
Figure 4. Typical Thermal Response
L, Lead Length = 3/8 Inch
θ
JL, JUNCTION-TO-LEAD THERMAL RESISTANCE (
°C/W)
40
i r , PEAK SURGE CURRENT (AMPS)
40
20
PW = 1 ms*
10
4
2
1
0.4
0.2
1
0.1
3
4
6
8 10
20
30
*SQUARE WAVE
PW = 100 ms*
PW = 1000 ms*
40
60 80 100
200
NOMINAL VZ (V)
PW = 8.3 ms*
30
20
L
10
PRIMARY PATH OF
CONDUCTION IS THROUGH
THE CATHODE LEAD
0
0
0.2
0.4
0.6
0.8
L, LEAD LENGTH TO HEAT SINK (INCH)
L
Figure 5. Typical Thermal Resistance
Figure 6. Maximum Non-Repetitive Surge Current
versus Nominal Zener Voltage
(See Note 3)
i r , PEAK SURGE CURRENT (AMPS)
30
20
10
5
2
1
0.5
0.2
0.1
1
10
100
PW, PULSE WIDTH (ms)
100
0
PLOTTED FROM INFORMATION
GIVEN IN FIGURE 6
VZ = 200 V
VZ = 3.3 V
I Z , ZENER CURRENT (mA)
1000
TC = 25°C
T = 25°C
100
10
1
0.1
1
2
3
4
5
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
9
10
Figure 7. Peak Surge Current versus Pulse Width
(See Note 3)
Figure 8. Zener Voltage versus Zener Current
VZ = 3.3 thru 10 Volts
Devices listed in bold, italic are Motorola preferred devices.
5 Watt Surmetic 40 Data Sheet
6-4
Motorola TVS/Zener Device Data
1N5333B through 1N5388B
1000
T = 25°C
I Z , ZENER CURRENT (mA)
I Z , ZENER CURRENT (mA)
10
20
30
40
50
60
VZ, ZENER VOLTAGE (VOLTS)
70
80
100
100
10
10
1
1
0.1
0.1
80
100
120
140
160
180
VZ, ZENER VOLTAGE (VOLTS)
200
220
Figure 9. Zener Voltage versus Zener Current
VZ = 11 thru 75 Volts
Figure 10. Zener Voltage versus Zener Current
VZ = 82 thru 200 Volts
APPLICATION NOTE
Since the actual voltage available from a given zener diode
is temperature dependent, it is necessary to determine junc-
tion temperature under any set of operating conditions in order
to calculate its value. The following procedure is recom-
mended:
Lead Temperature, TL, should be determined from:
TL =
θ
LA PD + TA
θ
LA is the lead-to-ambient thermal resistance and PD is the
power dissipation.
Junction Temperature, TJ, may be found from:
TJ = TL +
∆T
JL
∆T
JL is the increase in junction temperature above the lead
temperature and may be found from Figure 4 for a train of
power pulses or from Figure 5 for dc power.
∆T
JL =
θ
JL PD
For worst-case design, using expected limits of IZ, limits of
PD and the extremes of TJ (∆TJ) may be estimated. Changes
in voltage, VZ, can then be found from:
∆V
=
θ
VZ
∆T
J
θ
VZ, the zener voltage temperature coefficient, is found from
Figures 2 and 3.
Under high power-pulse operation, the zener voltage will
vary with time and may also be affected significantly by the
zener resistance. For best regulation, keep current excursions
as low as possible.
Data of Figure 4 should not be used to compute surge capa-
bility. Surge limitations are given in Figure 6. They are lower
than would be expected by considering only junction tempera-
ture, as current crowding effects cause temperatures to be ex-
tremely high in small spots resulting in device degradation
should the limits of Figure 6 be exceeded.
Devices listed in bold, italic are Motorola preferred devices.
Motorola TVS/Zener Device Data
5 Watt Surmetic 40 Data Sheet
6-5
