MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
1N5221B
SERIES
500 mW DO-35 Glass
Zener Voltage Regulator Diodes
500 mW
DO-35 GLASS
GENERAL DATA APPLICABLE TO ALL SERIES IN
THIS GROUP
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
Unit
500
4
DC Power Dissipation and TL ≤ 75°C
Lead Length = 3/8″
Derate above TL = 75°C
Value
mW
mW/°C
– 65 to +200
°C
PD
Operating and Storage Temperature Range
TJ, Tstg
PD , MAXIMUM POWER DISSIPATION (WATTS)
* Some part number series have lower JEDEC registered ratings.
0.7
HEAT
SINKS
0.6
0.5
0.4
3/8”
3/8”
0.3
0.2
0.1
0
0
20
40
60
80
100
120
140
160
180 200
TL, LEAD TEMPERATURE (°C)
Figure 1. Steady State Power Derating
Motorola TVS/Zener Device Data
500 mW DO-35 Glass Data Sheet
6-1
