MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
Motorola TVS/Zener Device Data
6-97
500 mW DO-35 Glass Data Sheet
500 mW DO-35 Glass
Zener Voltage Regulator Diodes
GENERAL DATA APPLICABLE TO ALL SERIES IN
THIS GROUP
500 Milliwatt
Hermetically Sealed
Glass Silicon Zener Diodes
Specification Features:
•
Complete Voltage Range — 1.8 to 200 Volts
•
DO-204AH Package — Smaller than Conventional DO-204AA Package
•
Double Slug Type Construction
•
Metallurgically Bonded Construction
Mechanical Characteristics:
CASE: Double slug type, hermetically sealed glass
MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230
°
C, 1/16
″
from
case for 10 seconds
FINISH: All external surfaces are corrosion resistant with readily solderable leads
POLARITY: Cathode indicated by color band. When operated in zener mode, cathode
will be positive with respect to anode
MOUNTING POSITION: Any
WAFER FAB LOCATION: Phoenix, Arizona
ASSEMBLY/TEST LOCATION: Seoul, Korea
MAXIMUM RATINGS
(Motorola Devices)*
Rating
Symbol
Value
Unit
DC Power Dissipation and TL
≤
75
°
C
Lead Length = 3/8
″
Derate above TL = 75
°
C
PD
500
4
mW
mW/
°
C
Operating and Storage Temperature Range
TJ, Tstg
– 65 to +200
°
C
* Some part number series have lower JEDEC registered ratings.
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
20
40
60
80
100
120
140
160
180 200
TL, LEAD TEMPERATURE (
°
C)
P
D
, MAXIMUM POWER DISSIP
A
TION (W
A
TTS)
Figure 1. Steady State Power Derating
HEAT
SINKS
3/8”
3/8”
GENERAL
DATA
CASE 299
DO-204AH
GLASS
500 mW
DO-35 GLASS
GLASS ZENER DIODES
500 MILLIWATTS
1.8–200 VOLTS
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-98
500 mW DO-35 Glass Data Sheet
APPLICATION NOTE — ZENER VOLTAGE
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
LAPD + TA.
θ
LA is the lead-to-ambient thermal resistance (
°
C/W) and PD is
the power dissipation. The value for
θ
LA will vary and depends
on the device mounting method.
θ
LA is generally 30 to 40
°
C/W
for the various clips and tie points in common use and for
printed circuit board wiring.
The temperature of the lead can also be measured using a
thermocouple placed on the lead as close as possible to the tie
point. The thermal mass connected to the tie point is normally
large enough so that it will not significantly respond to heat
surges generated in the diode as a result of pulsed operation
once steady-state conditions are achieved. Using the mea-
sured value of TL, the junction temperature may be deter-
mined by:
TJ = TL +
∆
TJL.
∆
TJL is the increase in junction temperature above the lead
temperature and may be found from Figure 2 for dc power:
∆
TJL =
θ
JLPD.
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
VZTJ.
θ
VZ, the zener voltage temperature coefficient, is found from
Figures 4 and 5.
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.
Surge limitations are given in Figure 7. They are lower than
would be expected by considering only junction temperature,
as current crowding effects cause temperatures to be ex-
tremely high in small spots, resulting in device degradation
should the limits of Figure 7 be exceeded.
L
L
500
400
300
200
100
0
0
0.2
0.4
0.6
0.8
1
2.4–60 V
62–200 V
L, LEAD LENGTH TO HEAT SINK (INCH)
JL
, JUNCTION-T
O-LEAD
THERMAL
RESIST
ANCE (
C/W)
θ
°
Figure 2. Typical Thermal Resistance
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
+25
°
C
+125
°
C
1000
7000
5000
2000
1000
700
500
200
100
70
50
20
10
7
5
2
1
0.7
0.5
0.2
0.1
0.07
0.05
0.02
0.01
0.007
0.005
0.002
0.001
3
4
5
6
7
8
9
10
11
12
13
14
15
VZ, NOMINAL ZENER VOLTAGE (VOLTS)
I
, LEAKAGE CURRENT
(
A
)
µ
R
Figure 3. Typical Leakage Current
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-99
500 mW DO-35 Glass Data Sheet
+12
+10
+8
+6
+4
+2
0
–2
–4
2
3
4
5
6
7
8
9
10
11
12
VZ, ZENER VOLTAGE (VOLTS)
Figure 4a. Range for Units to 12 Volts
VZ @ IZT
(NOTE 2)
RANGE
TEMPERATURE COEFFICIENTS
(–55
°
C to +150
°
C temperature range; 90% of the units are in the ranges indicated.)
100
70
50
30
20
10
7
5
3
2
1
2
3
4
5
6
7
8
9
10
11
12
10
20
30
50
70
100
VZ, ZENER VOLTAGE (VOLTS)
Figure 4b. Range for Units 12 to 100 Volts
RANGE
VZ @ IZ (NOTE 2)
120
130
140
150
160
170
180
190
200
200
180
160
140
120
100
VZ, ZENER VOLTAGE (VOLTS)
Figure 4c. Range for Units 120 to 200 Volts
VZ @ IZT
(NOTE 2)
+6
+4
+2
0
–2
–4
3
4
5
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
Figure 5. Effect of Zener Current
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
NOTE:
CHANGES IN ZENER CURRENT DO NOT
NOTE:
AFFECT TEMPERATURE COEFFICIENTS
1 mA
0.01 mA
VZ @ IZ
TA = 25
°
C
1000
C, CAP
ACIT
ANCE
(pF)
500
200
100
50
20
10
5
2
1
1
2
5
10
20
50
100
VZ, ZENER VOLTAGE (VOLTS)
Figure 6a. Typical Capacitance 2.4–100 Volts
TA = 25
°
C
0 V BIAS
1 V BIAS
50% OF
VZ BIAS
100
70
50
30
20
10
7
5
3
2
1
120
140
160
180
190
200
220
VZ, ZENER VOLTAGE (VOLTS)
Figure 6b. Typical Capacitance 120–200 Volts
TA = 25
°
C
1 VOLT BIAS
50% OF VZ BIAS
0 BIAS
θ
V
Z
, TEMPERA
TURE COEFFICIENT
(mV/
°
C)
20 mA
C, CAP
ACIT
ANCE
(pF)
θ
V
Z
, TEMPERA
TURE COEFFICIENT
(mV/
°
C)
θ
V
Z
, TEMPERA
TURE COEFFICIENT
(mV/
°
C)
θ
V
Z
, TEMPERA
TURE COEFFICIENT
(mV/
°
C)
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-100
500 mW DO-35 Glass Data Sheet
100
70
50
30
20
10
7
5
3
2
1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
P
pk
, PEAK SURGE POWER (W
A
TTS)
PW, PULSE WIDTH (ms)
5% DUTY CYCLE
10% DUTY CYCLE
20% DUTY CYCLE
11 V–91 V NONREPETITIVE
1.8 V–10 V NONREPETITIVE
RECTANGULAR
WAVEFORM
TJ = 25
°
C PRIOR TO
INITIAL PULSE
Figure 7a. Maximum Surge Power 1.8–91 Volts
1000
700
500
300
200
100
70
50
30
20
10
7
5
3
2
1
0.01
0.1
1
10
100
1000
P
pk
, PEAK SURGE POWER (W
A
TTS)
PW, PULSE WIDTH (ms)
Figure 7b. Maximum Surge Power DO-204AH
100–200 Volts
1000
500
200
100
50
20
10
1
2
5
0.1
0.2
0.5
1
2
5
10
20
50
100
IZ, ZENER CURRENT (mA)
Figure 8. Effect of Zener Current on
Zener Impedance
Z
Z
, DYNAMIC IMPEDANCE (OHMS)
Z
Z
, DYNAMIC IMPEDANCE (OHMS)
1000
700
500
200
100
70
50
20
10
7
5
2
1
1
2
3
5
7
10
20
30
50
70 100
VZ, ZENER VOLTAGE (VOLTS)
Figure 9. Effect of Zener Voltage on Zener Impedance
Figure 10. Typical Forward Characteristics
RECTANGULAR
WAVEFORM, TJ = 25
°
C
100–200 VOLTS NONREPETITIVE
TJ = 25
°
C
iZ(rms) = 0.1 IZ(dc)
f = 60 Hz
IZ = 1 mA
5 mA
20 mA
TJ = 25
°
C
iZ(rms) = 0.1 IZ(dc)
f = 60 Hz
VZ = 2.7 V
47 V
27 V
6.2 V
VF, FORWARD VOLTAGE (VOLTS)
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1000
500
200
100
50
20
10
5
2
1
I F
, FOR
W
ARD
CURRENT
(mA)
MINIMUM
MAXIMUM
150
°
C
75
°
C
0
°
C
25
°
C
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-101
500 mW DO-35 Glass Data Sheet
Figure 11. Zener Voltage versus Zener Current — VZ = 1 thru 16 Volts
VZ, ZENER VOLTAGE (VOLTS)
I Z
, ZENER CURRENT
(mA)
20
10
1
0.1
0.01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TA = 25
°
Figure 12. Zener Voltage versus Zener Current — VZ = 15 thru 30 Volts
VZ, ZENER VOLTAGE (VOLTS)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
10
1
0.1
0.01
TA = 25
°
I Z
, ZENER CURRENT
(mA)
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-102
500 mW DO-35 Glass Data Sheet
Figure 13. Zener Voltage versus Zener Current — VZ = 30 thru 105 Volts
VZ, ZENER VOLTAGE (VOLTS)
10
1
0.1
0.01
30
35
40
45
50
55
60
70
75
80
85
90
95
100
Figure 14. Zener Voltage versus Zener Current — VZ = 110 thru 220 Volts
VZ, ZENER VOLTAGE (VOLTS)
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
10
1
0.1
0.01
TA = 25
°
65
105
I Z
, ZENER CURRENT
(mA)
I Z
, ZENER CURRENT
(mA)
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-103
500 mW DO-35 Glass Data Sheet
ELECTRICAL CHARACTERISTICS
(TA = 25
°
C, VF = 1.5 V Max at 200 mA for all types)
T
Nominal
Zener Voltage
Test
Maximum Zener Impedance
Maximum
DC Zener Current
Maximum Reverse Leakage Current
Type
Number
(Note 1)
Zener Voltage
VZ @ IZT
(Note 2)
Volts
Test
Current
IZT
mA
Maximum Zener Impedance
ZZT @ IZT
(Note 3)
Ohms
DC Zener Current
IZM
(Note 4)
mA
TA = 25
°
C
IR @ VR = 1 V
µ
A
TA = 150
°
C
IR @ VR = 1 V
µ
A
1N4370A
2.4
20
30
150
100
200
1N4371A
2.7
20
30
135
75
150
1N4372A
3
20
29
120
50
100
1N746A
3.3
20
28
110
10
30
1N747A
3.6
20
24
100
10
30
1N748A
3.9
20
23
95
10
30
1N749A
4.3
20
22
85
2
30
1N750A
4.7
20
19
75
2
30
1N751A
5.1
20
17
70
1
20
1N752A
5.6
20
11
65
1
20
1N753A
6.2
20
7
60
0.1
20
1N754A
6.8
20
5
55
0.1
20
1N755A
7.5
20
6
50
0.1
20
1N756A
8.2
20
8
45
0.1
20
1N757A
9.1
20
10
40
0.1
20
1N758A
10
20
17
35
0.1
20
1N759A
12
20
30
30
0.1
20
Type
Nominal
Zener Voltage
VZ
Test
Current
Maximum Zener Impedance
(Note 3)
Maximum
DC Zener Current
IZM
Maximum Reverse Current
Type
Number
(Note 1)
VZ
(Note 2)
Volts
Current
IZT
mA
ZZT @ IZT
Ohms
ZZK @ IZK
Ohms
IZK
mA
IZM
(Note 4)
mA
IR Maximum
µ
A
Test Voltage Vdc
VR
1N957B
6.8
18.5
4.5
700
1
47
150
5.2
1N958B
7.5
16.5
5.5
700
0.5
42
75
5.7
1N959B
8.2
15
6.5
700
0.5
38
50
6.2
1N960B
9.1
14
7.5
700
0.5
35
25
6.9
1N961B
10
12.5
8.5
700
0.25
32
10
7.6
1N962B
11
11.5
9.5
700
0.25
28
5
8.4
1N963B
12
10.5
11.5
700
0.25
26
5
9.1
1N964B
13
9.5
13
700
0.25
24
5
9.9
1N965B
15
8.5
16
700
0.25
21
5
11.4
1N966B
16
7.8
17
700
0.25
19
5
12.2
1N967B
18
7
21
750
0.25
17
5
13.7
1N968B
20
6.2
25
750
0.25
15
5
15.2
1N969B
22
5.6
29
750
0.25
14
5
16.7
1N970B
24
5.2
33
750
0.25
13
5
18.2
1N971B
27
4.6
41
750
0.25
11
5
20.6
1N972B
30
4.2
49
1000
0.25
10
5
22.8
1N973B
33
3.8
58
1000
0.25
9.2
5
25.1
1N974B
36
3.4
70
1000
0.25
8.5
5
27.4
1N975B
39
3.2
80
1000
0.25
7.8
5
29.7
1N976B
43
3
93
1500
0.25
7
5
32.7
1N977B
47
2.7
105
1500
0.25
6.4
5
35.8
1N978B
51
2.5
125
1500
0.25
5.9
5
38.8
1N979B
56
2.2
150
2000
0.25
5.4
5
42.6
1N980B
62
2
185
2000
0.25
4.9
5
47.1
GENERAL DATA — 500 mW DO-35 GLASS
Motorola TVS/Zener Device Data
6-104
500 mW DO-35 Glass Data Sheet
Type
Nominal
Zener Voltage
VZ
Test
Current
Maximum Zener Impedance
(Note 3)
Maximum
DC Zener Current
IZM
Maximum Reverse Leakage Current
Type
Number
(Note 1)
VZ
(Note 2)
Volts
Current
IZT
mA
ZZT @ IZT
Ohms
ZZK @ IZK
Ohms
IZK
mA
IZM
(Note 4)
mA
IR Maximum
µ
A
Test Voltage Vdc
VR
1N981B
68
1.8
230
2000
0.25
4.5
5
51.7
1N982B
75
1.7
270
2000
0.25
4.1
5
56
1N983B
82
1.5
330
3000