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Motorola Electronic Components Datasheet

1N4728A Datasheet

One Watt Hermetically Sealed Glass Silicon Zener Diodes

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1N4728A pdf
MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
1–1.3 Watt DO-41 Glass
Zener Voltage Regulator Diodes
GENERAL DATA APPLICABLE TO ALL SERIES IN
THIS GROUP
One Watt Hermetically Sealed Glass
Silicon Zener Diodes
Specification Features:
Complete Voltage Range — 3.3 to 100 Volts
DO-41 Package
Double Slug Type Construction
Metallurgically Bonded Construction
Oxide Passivated Die
Mechanical Characteristics:
CASE: Double slug type, hermetically sealed glass
MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230°C, 1/16from
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
Rating
DC Power Dissipation @ TA = 50°C
Derate above 50°C
Operating and Storage Junction Temperature Range
Symbol
PD
TJ, Tstg
GENERAL
DATA
1–1.3 WATT
DO-41 GLASS
1 WATT
ZENER REGULATOR
DIODES
3.3–100 VOLTS
CASE 59-03
DO-41
GLASS
Value
1
6.67
– 65 to +200
Unit
Watt
mW/°C
°C
1.25
L = LEAD LENGTH
L = 1
TO HEAT SINK
1 L = 1/8
L = 3/8
0.75
0.5
0.25
0 20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERATURE (°C)
Figure 1. Power Temperature Derating Curve
1–1.3 Watt DO-41 Glass Data Sheet
6-20
Motorola TVS/Zener Device Data


Motorola Electronic Components Datasheet

1N4728A Datasheet

One Watt Hermetically Sealed Glass Silicon Zener Diodes

No Preview Available !

1N4728A pdf
GENERAL DATA — 1–1.3 WATT DO-41 GLASS
a. Range for Units to 12 Volts
b. Range for Units to 12 to 100 Volts
+12 100
70
+10 50
+8 30
+6 20
+4 10 RANGE VZ @ IZT
7
+2
RANGE
VZ @ IZT
5
03
–2 2
–4
2 3 4 5 6 7 8 9 10 11 12
VZ, ZENER VOLTAGE (VOLTS)
1
10
20 30
50
VZ, ZENER VOLTAGE (VOLTS)
70 100
Figure 2. Temperature Coefficients
(–55°C to +150°C temperature range; 90% of the units are in the ranges indicated.)
175
150
125
100
75
50
25
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
L, LEAD LENGTH TO HEAT SINK (INCHES)
Figure 3. Typical Thermal Resistance
versus Lead Length
+6
+4
VZ @ IZ
TA = 25°C
+2 20 mA
0
0.01 mA
1 mA
–2 NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
NOTE: CHANGES IN ZENER CURRENT DO NOT
NOTE: EFFECT TEMPERATURE COEFFICIENTS
–4
34
5678
VZ, ZENER VOLTAGE (VOLTS)
Figure 4. Effect of Zener Current
100
70
50
30 5% DUTY CYCLE
20
11 V–100 V NONREPETITIVE
3.3 V–10 V NONREPETITIVE
10 10% DUTY CYCLE
7
5
20% DUTY CYCLE
3
2
1
0.01 0.02
0.05 0.1 0.2
0.5
This graph represents 90 percentile data points.
For worst case design characteristics, multiply surge power by 2/3.
12
5
PW, PULSE WIDTH (ms)
10
20
Figure 5. Maximum Surge Power
RECTANGULAR
WAVEFORM
TJ = 25°C PRIOR TO
INITIAL PULSE
50 100 200
500 1000
Motorola TVS/Zener Device Data
1–1.3 Watt DO-41 Glass Data Sheet
6-21


Part Number 1N4728A
Description One Watt Hermetically Sealed Glass Silicon Zener Diodes
Maker MotorolaInc
Total Page 9 Pages
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