MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
1 to 3 Watt DO-41 Surmetic 30
Zener Voltage Regulator Diodes
GENERAL DATA APPLICABLE TO ALL SERIES IN
THIS GROUP
1N5913B
SERIES
1–3 WATT
DO-41
SURMETIC 30
1 TO 3 WATT
ZENER REGULATOR
DIODES
3.3–400 VOLTS
1 to 3 Watt Surmetic 30
Silicon Zener Diodes
. . . a complete series of 1 to 3 Watt Zener Diodes with limits and operating characteristics
that reflect the superior capabilities of silicon-oxide-passivated junctions. All this in an
axial-lead, transfer-molded plastic package offering protection in all common environmen-
tal conditions.
Specification Features:
•
Surge Rating of 98 Watts @ 1 ms
•
Maximum Limits Guaranteed On Up To Six Electrical Parameters
•
Package No Larger Than the Conventional 1 Watt Package
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:
0.4 gram (approx)
WAFER FAB LOCATION:
Phoenix, Arizona
ASSEMBLY/TEST LOCATION:
Seoul, Korea
MAXIMUM RATINGS
Rating
DC Power Dissipation @ TL = 75°C
Lead Length = 3/8″
Derate above 75°C
DC Power Dissipation @ TA = 50°C
Derate above 50°C
Operating and Storage Junction Temperature Range
5
PD, MAXIMUM DISSIPATION (WATTS)
L = 1/8″
4
L = 3/8″
3
L = LEAD LENGTH
TO HEAT SINK
Symbol
PD
CASE 59-03
DO-41
PLASTIC
Value
3
24
Unit
Watts
mW/°C
Watt
mW/°C
°C
PD
TJ, Tstg
1
6.67
– 65 to +200
2
L = 1″
1
0
0
20
40
60
80 100 120 140 160
TL, LEAD TEMPERATURE (°C)
180
200
Figure 1. Power Temperature Derating Curve
Motorola TVS/Zener Device Data
500 mW DO-35 Glass Data Sheet
6-1
GENERAL DATA — 500 mW DO-35 GLASS
*MAXIMUM RATINGS
Rating
DC Power Dissipation @ TL = 75°C, Lead Length = 3/8″
Derate above 75°C
Symbol
PD
Value
1.5
12
Unit
Watts
mW/°C
*ELECTRICAL CHARACTERISTICS
(TL = 30°C unless otherwise noted. VF = 1.5 Volts Max @ lF = 200 mAdc for all types.)
Motorola
Type
Number
(Note 1)
1N5913B
1N5914B
1N5917B
1N5919B
1N5920B
1N5921B
1N5923B
1N5924B
1N5925B
1N5927B
1N5929B
1N5930B
1N5931B
1N5932B
1N5933B
1N5934B
1N5935B
1N5936B
1N5937B
1N5938B
1N5940B
1N5941B
1N5942B
1N5943B
1N5944B
1N5945B
1N5946B
1N5947B
1N5948B
1N5950B
1N5951B
1N5952B
1N5953B
1N5954B
1N5955B
1N5956B
Nominal
Zener Voltage
VZ @ IZT
Volts
(Note 2 and 3)
3.3
3.6
4.7
5.6
6.2
6.8
8.2
9.1
10
12
15
16
18
20
22
24
27
30
33
36
43
47
51
56
62
68
75
82
91
110
120
130
150
160
180
200
Test
Current
IZT
mA
113.6
104.2
79.8
66.9
60.5
55.1
45.7
41.2
37.5
31.2
25
23.4
20.8
18.7
17
15.6
13.9
12.5
11.4
10.4
8.7
8
7.3
6.7
6
5.5
5
4.6
4.1
3.4
3.1
2.9
2.5
2.3
2.1
1.9
Max. Zener Impedance (Note 4)
ZZT @ IZT
Ohms
10
9
5
2
2
2.5
3.5
4
4.5
6.5
9
10
12
14
17.5
19
23
26
33
38
53
67
70
86
100
120
140
160
200
300
380
450
600
700
900
1200
ZZK
Ohms
500
500
500
250
200
200
400
500
500
550
600
600
650
650
650
700
700
750
800
850
950
1000
1100
1300
1500
1700
2000
2500
3000
4000
4500
5000
6000
6500
7000
8000
@
IZK
mA
1
1
1
1
1
1
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Max. Reverse
Leakage Current
IR
µA
100
75
5
5
5
5
5
5
5
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
@ VR
Volts
1
1
1.5
3
4
5.2
6.5
7
8
9.1
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
32.7
35.8
38.8
42.6
47.1
51.7
56
62.2
69.2
83.6
91.2
98.8
114
121.6
136.8
152
Maximum DC
Zener
Current
IZM
mAdc
454
416
319
267
241
220
182
164
150
125
100
93
83
75
68
62
55
50
45
41
34
31
29
26
24
22
20
18
16
13
12
11
10
9
8
7
*Indicates JEDEC Registered Data.
NOTE 1. TOLERANCE AND VOLTAGE DESIGNATION
Tolerance designation — Device tolerances of
±5%
are indicated by a “B” suffix.
NOTE 3. ZENER VOLTAGE (VZ) MEASUREMENT
Motorola guarantees the zener voltage when meausred at 90 seconds while maintaining the
lead temperature (TL) at 30°C
±1°C,
3/8″ from the diode body.
NOTE 4. ZENER IMPEDANCE (ZZ) DERIVATION
NOTE 2. SPECIAL SELECTIONS AVAILABLE INCLUDE:
Nominal zener voltages between those shown and
±1%
and
±2%
tight voltage tolerances.
Consult factory.
The zener impedance is derived from the 60 cycle ac voltage, which results when an ac cur-
rent having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed
on IZT or IZK.
500 mW DO-35 Glass Data Sheet
6-2
Motorola TVS/Zener Device Data
GENERAL DATA — 500 mW DO-35 GLASS
θ
JL (t, D) TRANSIENT THERMAL RESISTANCE
JUNCTION-TO-LEAD (
°
C/W)
30
20
10
7
5
3
2
1
0.7
0.5
D =0.5
0.2
0.1
0.05
0.02
0.01
D=0
0.0005
0.001
0.002
0.005
NOTE: BELOW 0.1 SECOND, THERMAL
RESPONSE CURVE IS APPLICABLE
TO ANY LEAD LENGTH (L).
0.01
0.02
0.05
t, TIME (SECONDS)
0.1
0.2
PPK
t2
DUTY CYCLE, D =t1/t2
t1
SINGLE PULSE
∆T
JL =
θ
JL (t)PPK
REPETITIVE PULSES
∆T
JL =
θ
JL (t,D)PPK
0.5
1
2
5
10
0.3
0.0001 0.0002
Figure 2. Typical Thermal Response L, Lead Length = 3/8 Inch
1K
PPK , PEAK SURGE POWER (WATTS)
500
300
200
100
50
30
20
10
0.1
0.2 0.3 0.5
1
2 3
5
10
PW, PULSE WIDTH (ms)
20 30 50
100
RECTANGULAR
NONREPETITIVE
WAVEFORM
TJ = 25°C PRIOR
TO INITIAL PULSE
3
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
0.0005
0.0003
TA = 125°C
IR , REVERSE LEAKAGE (µ Adc) @ VR
AS SPECIFIED IN ELEC. CHAR. TABLE
TA = 125°C
1
2
5
10
20
50 100
NOMINAL VZ (VOLTS)
200
400
1000
Figure 3. Maximum Surge Power
Figure 4. Typical Reverse Leakage
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 (°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
30–40°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 +
∆T
JL
Motorola TVS/Zener Device Data
∆T
JL is the increase in junction temperature above the lead
temperature and may be found from Figure 2 for a train of
power pulses (L = 3/8 inch) or from Figure 10 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 5 and 6.
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 2 should not be used to compute surge capa-
bility. Surge limitations are given in Figure 3. 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 3 be exceeded.
500 mW DO-35 Glass Data Sheet
6-3
GENERAL DATA — 500 mW DO-35 GLASS
TEMPERATURE COEFFICIENT RANGES
(90% of the Units are in the Ranges Indicated)
θ
VZ, TEMPERATURE COEFFICIENT (mV/
°
C) @ I ZT
10
8
6
4
2
0
–2
–4
3
4
5
6
7
8
9
10
VZ, ZENER VOLTAGE @ IZT (VOLTS)
11
12
RANGE
θ
VZ, TEMPERATURE COEFFICIENT (mV/
°
C) @ I ZT
1000
500
200
100
50
20
10
10
20
50
100
200
400
VZ, ZENER VOLTAGE @ IZT (VOLTS)
1000
Figure 5. Units To 12 Volts
Figure 6. Units 10 To 400 Volts
ZENER VOLTAGE versus ZENER CURRENT
(Figures 7, 8 and 9)
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
1
2
3
4
5
6
7
VZ, ZENER VOLTAGE (VOLTS)
8
9
10
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
10
20
30
40
50
60
70
80
VZ, ZENER VOLTAGE (VOLTS)
90
100
IZ, ZENER CURRENT (mA)
Figure 7. VZ = 3.3 thru 10 Volts
θ
JL, JUNCTION-TO-LEAD THERMAL RESISTANCE (
°
C/W)
10
5
IZ , ZENER CURRENT (mA)
80
70
60
50
40
30
20
10
0
0
1/8
IZ , ZENER CURRENT (mA)
Figure 8. VZ = 12 thru 82 Volts
2
1
0.5
L
L
TL
PRIMARY PATH OF
CONDUCTION IS THROUGH
THE CATHODE LEAD
1/4
3/8
1/2
5/8
3/4
L, LEAD LENGTH TO HEAT SINK (INCH)
7/8
1
0.2
0.1
100
150
200
250
300
350
VZ, ZENER VOLTAGE (VOLTS)
400
Figure 9. VZ = 100 thru 400 Volts
Figure 10. Typical Thermal Resistance
500 mW DO-35 Glass Data Sheet
6-4
Motorola TVS/Zener Device Data
GENERAL DATA — 500 mW DO-35 GLASS
Zener Voltage Regulator Diodes — Axial Leaded
1–3 Watt DO-41 Surmetic 30
B
NOTES:
1. ALL RULES AND NOTES ASSOCIATED WITH
JEDEC DO-41 OUTLINE SHALL APPLY.
2. POLARITY DENOTED BY CATHODE BAND.
3. LEAD DIAMETER NOT CONTROLLED WITHIN F
DIMENSION.
MILLIMETERS
MIN
MAX
4.07
5.20
2.04
2.71
0.71
0.86
—
1.27
27.94
—
INCHES
MIN
MAX
0.160 0.205
0.080 0.107
0.028 0.034
—
0.050
1.100
—
K
F
D
A
F
K
DIM
A
B
D
F
K
CASE 59-03
DO-41
PLASTIC
(Refer to Section 10 for Surface Mount, Thermal Data and Footprint Information.)
MULTIPLE PACKAGE QUANTITY (MPQ)
REQUIREMENTS
Package Option
Tape and Reel
Tape and Ammo
Type No. Suffix
RL
TA
MPQ (Units)
6K
4K
(Refer to Section 10 for more information on Packaging Specifications.)
Motorola TVS/Zener Device Data
500 mW DO-35 Glass Data Sheet
6-5
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