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
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 environmental conditions.
GENERAL
DATA
1±3 WATT
DO-41
SURMETIC 30
1 TO 3 WATT
ZENER REGULATOR
DIODES
3.3±400 VOLTS
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
59-03 |
-41 |
PLASTIC |
MAXIMUM RATINGS
Rating |
Symbol |
Value |
Unit |
|
|
|
|
DC Power Dissipation @ TL = 75°C |
PD |
3 |
Watts |
Lead Length = 3/8″ |
|
|
mW/°C |
Derate above 75°C |
|
24 |
|
|
|
|
|
DC Power Dissipation @ TA = 50°C |
PD |
1 |
Watt |
Derate above 50°C |
|
6.67 |
mW/°C |
|
|
|
|
Operating and Storage Junction Temperature Range |
TJ, Tstg |
± 65 to +200 |
°C |
P , MAXIMUM DISSIPATION (WATTS) D
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L |
= LEAD |
LENGTH |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
4 |
|
|
|
|
|
|
|
|
L = 1/8″ |
|
|
|
|
TO |
HEAT SINK |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 |
|
|
|
L = 3/8″ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L |
= 1″ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
160 |
180 |
200 |
||||||||
|
|
|
|
|
|
TL, LEAD TEMPERATURE (°C) |
|
|
|
Figure 1. Power Temperature Derating Curve
Motorola TVS/Zener Device Data |
1±3 Watt DO-41 Surmetic 30 Data Sheet |
|
6-43 |
|
|
|
|
GENERAL DATA Ð 1-3 WATT DO-41 SURMETIC 30 |
|
|
|||||||||||
(t, D) TRANSIENT THERMAL RESISTANCE |
|
30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 |
D =0.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
JUNCTION-TO-LEAD (°C/W) |
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7 |
0.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
5 |
0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
PPK |
t1 |
|
|||
2 |
0.05 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
t2 |
|
|||
1 |
0.02 |
|
|
|
|
|
|
|
|
|
|
|
DUTY CYCLE, D =t1/t2 |
|
|||
0.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
0.7 |
|
|
|
|
NOTE: BELOW 0.1 SECOND, THERMAL |
SINGLE PULSE |
TJL = θJL (t)PPK |
|
|||||||||
|
|
|
|
|
|
||||||||||||
0.5 |
D = 0 |
|
|
|
|
|
RESPONSE CURVE IS APPLICABLE |
REPETITIVE PULSES |
TJL = θJL (t,D)PPK |
|
|||||||
JL |
0.3 |
|
|
|
|
|
|
TO ANY LEAD LENGTH (L). |
|
|
|
|
|
|
|||
θ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.0002 |
0.0005 |
0.001 |
0.002 |
0.005 |
0.01 |
0.02 |
0.05 |
0.1 |
0.2 |
0.5 |
1 |
2 |
5 |
10 |
|
|
|
0.0001 |
t, TIME (SECONDS)
Figure 2. Typical Thermal Response L, Lead Length = 3/8 Inch
POWERSURGEPEAK, (WATTS) |
1K |
|
|
|
|
|
|
|
|
|
|
|
LEAKAGEREVERSE(μ Adc) @ V |
ELEC.IN CHAR. TABLE |
3 |
|
|
|
|
|
|
TA = 125 C |
||
|
|
|
|
|
|
|
|
|
|
|
|
0.002 |
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
RECTANGULAR |
R |
|
2 |
|
|
|
|
|
|
|
|
|
|||
|
500 |
|
|
|
|
|
|
|
NONREPETITIVE |
|
|
1 |
|
|
|
|
|
|
|
|
|
|||
|
300 |
|
|
|
|
|
|
|
WAVEFORM |
|
|
|
0.5 |
|
|
|
|
|
|
|
TA = 125°C |
|||
|
|
|
|
|
|
|
|
TJ = 25°C PRIOR |
|
|
0.2 |
|
|
|
|
|
|
|
|
|
||||
|
200 |
|
|
|
|
|
|
|
TO INITIAL PULSE |
|
|
0.1 |
|
|
|
|
|
|
|
|
|
|||
|
100 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0.05 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.02 |
|
|
|
|
|
|
|
|
|
|
PK |
|
|
|
|
|
|
|
|
|
|
|
|
R |
SPECIFIED |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.001 |
|
|
|
|
|
|
|
|
|
|||
|
50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.005 |
|
|
|
|
|
|
|
|
|
P |
30 |
|
|
|
|
|
|
|
|
|
|
|
|
AS |
|
|
|
|
|
|
|
|
|
° |
20 |
|
|
|
|
|
|
|
|
|
|
|
I |
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
, |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.0005 |
|
|
|
|
|
|
|
|
|
|
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0.0003 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
2 |
5 |
10 |
20 |
50 |
100 |
200 |
400 |
1000 |
|
|
0.1 |
0.2 |
0.3 |
0.5 |
1 |
2 |
3 |
5 |
10 |
20 |
30 |
50 |
100 |
|
||||||||||
|
|
|
|
|
NOMINAL VZ (VOLTS) |
|
|
|
||||||||||||||||
|
|
|
|
|
PW, PULSE WIDTH (ms) |
|
|
|
|
|
|
|
|
|
|
|
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 junction temperature under any set of operating conditions in order to calculate its value. The following procedure is recommended:
Lead Temperature, TL, should be determined from: TL = θLA PD + TA
θLA is the lead-to-ambient thermal resistance (°C/W) and PD is the power dissipation. The value for θLA will vary and depends on the device mounting method. θLA 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 measured value of TL, the junction temperature may be determined by:
TJ = TL + TJL
TJL 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.
TJL = θJL 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 = θVZ TJ
θVZ, 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 capability. Surge limitations are given in Figure 3. They are lower than would be expected by considering only junction temperature, as current crowding effects cause temperatures to be extremely high in small spots resulting in device degradation should the limits of Figure 3 be exceeded.
1±3 Watt DO-41 Surmetic 30 Data Sheet |
Motorola TVS/Zener Device Data |
6-44 |
|
GENERAL DATA Ð 1-3 WATT DO-41 SURMETIC 30
TEMPERATURE COEFFICIENT RANGES
(90% of the Units are in the Ranges Indicated)
ZT |
10 |
|
|
|
|
|
|
|
|
|
ZT |
1000 |
|
|
I |
|
|
|
|
|
|
|
|
|
|
||||
, TEMPERATURE COEFFICIENT (mV/ °C) @ |
8 |
|
|
|
|
|
|
|
|
|
TEMPERATURE COEFFICIENT (mV/ °C) @ I |
500 |
|
|
6 |
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
200 |
|
|||
4 |
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
100 |
|
|||
2 |
|
|
|
|
|
RANGE |
|
|
|
|
|
|||
0 |
|
|
|
|
|
|
|
|
|
50 |
|
|||
|
|
|
|
|
|
|
|
|
|
|
||||
±2 |
|
|
|
|
|
|
|
|
|
20 |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|||
VZ |
±4 |
|
|
|
|
|
|
|
|
|
, |
10 |
|
|
|
|
|
|
|
|
|
|
|
VZ |
|
||||
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
10 |
20 |
|||
θ |
θ |
|||||||||||||
|
|
|
|
VZ, ZENER VOLTAGE @ IZT (VOLTS) |
|
|
|
|
|
50 |
100 |
200 |
400 |
1000 |
VZ, ZENER VOLTAGE @ IZT (VOLTS)
Figure 5. Units To 12 Volts |
Figure 6. Units 10 To 400 Volts |
IZ, ZENER CURRENT (mA)
|
|
|
|
|
|
ZENER VOLTAGE versus ZENER CURRENT |
|
|
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
(Figures 7, 8 and 9) |
|
|
|
|
|
|
|
|
|
|
||
100 |
|
|
|
|
|
|
|
|
|
|
100 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
50 |
|
|
|
|
|
|
|
|
|
|
50 |
|
|
|
|
|
|
|
|
|
|
30 |
|
|
|
|
|
|
|
|
|
(mA) |
30 |
|
|
|
|
|
|
|
|
|
|
20 |
|
|
|
|
|
|
|
|
|
20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
10 |
|
|
|
|
|
|
|
|
|
CURRENT |
3 |
|
|
|
|
|
|
|
|
|
|
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
10 |
|
|
|
|
|
|
|
|
|
|
5 |
|
|
|
|
|
|
|
|
|
|
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
|
ZENER |
2 |
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
, |
|
|
|
|
|
|
|
|
|
|
|
0.5 |
|
|
|
|
|
|
|
|
|
Z |
0.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
I |
|
|
|
|
|
|
|
|
|
|
||
0.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.3 |
|
|
|
|
|
|
|
|
|
|
|
0.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.2 |
|
|
|
|
|
|
|
|
|
|
|
0.1 |
|
|
|
|
|
|
|
|
|
|
0.1 |
|
|
|
|
|
|
|
|
|
|
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
0 |
10 |
20 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
|
|
|
VZ, ZENER VOLTAGE (VOLTS) |
|
|
|
|
|
|
VZ, ZENER VOLTAGE (VOLTS) |
|
|
|
Figure 7. VZ = 3.3 thru 10 Volts
|
10 |
|
|
|
|
|
|
|
5 |
|
|
|
|
|
|
(mA) |
1 |
|
|
|
|
|
|
CURRENT |
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
ZENER, |
0.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Z |
|
|
|
|
|
|
|
I |
|
|
|
|
|
|
|
|
0.2 |
|
|
|
|
|
|
|
0.1 |
150 |
200 |
250 |
300 |
350 |
400 |
|
100 |
VZ, ZENER VOLTAGE (VOLTS)
θJL, JUNCTION-TO-LEAD THERMAL RESISTANCE (°C/W)
80
70
60
50
40
30
20
10
0
0
Figure 8. VZ = 12 thru 82 Volts
L |
L |
|
TL |
PRIMARY PATH OF
CONDUCTION IS THROUGH
THE CATHODE LEAD
1/8 |
1/4 |
3/8 |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
L, LEAD LENGTH TO HEAT SINK (INCH)
Figure 9. VZ = 100 thru 400 Volts |
Figure 10. Typical Thermal Resistance |
|
|
Motorola TVS/Zener Device Data |
1±3 Watt DO-41 Surmetic 30 Data Sheet |
|
6-45 |