MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
1N746A
SERIES
500 mW
500 mW DO-35 Glass
Zener Voltage Regulator Diodes
GENERAL DATA APPLICABLE TO ALL SERIES IN
THIS GROUP
DO-35 GLASS
500 Milliwatt
Hermetically Sealed
Glass Silicon Zener Diodes
GLASS ZENER DIODES
500 MILLIWATTS
1.8–200 VOLTS
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 299
DO-204AH
GLASS
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 T ≤ 75°C
Lead Length = 3/8″
P
D
L
500
4
mW
mW/°C
Derate above T = 75°C
L
Operating and Storage Temperature Range
T , T
J stg
– 65 to +200
°C
* Some part number series have lower JEDEC registered ratings.
0.7
0.6
HEAT
SINKS
0.5
0.4
0.3
0.2
3/8”
3/8”
0.1
0
0
20
40
60
80
100
120
140
C)
160
180 200
T , LEAD TEMPERATURE (
°
L
Figure 1. Steady State Power Derating
Motorola TVS/Zener Device Data
500 mW DO-35 Glass Data Sheet
6-1