®
1N4728A – Z1330A
1.0W ZENER DIODE
WON-TOP ELECTRONICS
Pb
Features
Glass Passivated Die Construction
1.0W Power Dissipation
3.3V – 330V Nominal Zener Voltage
5% Standard Vz Tolerance
Low Inductance
For Use in Voltage Regulator or Reference
Plastic Case Material has UL Flammability
Classification Rating 94V-0
A
B
A
C
D
Mechanical Data
Case: DO-41, Molded Plastic
Terminals: Plated Leads Solderable per
MIL-STD-202, Method 208
Polarity: Cathode Band
Weight: 0.35 grams (approx.)
Mounting Position: Any
Marking: Type Number
Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 5
Maximum Ratings
Dim
DO-41
Min
A
25.4
—
B
4.06
5.21
C
0.71
0.864
D
2.00
2.72
Max
All Dimensions in mm
@TA=25°C unless otherwise specified
Characteristic
Symbol
Value
Unit
Power Dissipation at TL = 50°C (Note 1)
Derate above 50°C
PD
1.0
6.67
W
mW/°C
Forward Voltage @ IF = 200mA
VF
1.2
V
RθJA
170
K/W
TJ, TSTG
-65 to +150
°C
Thermal Resistance, Junction to Ambient (Note 2)
Operating and Storage Temperature Range
Note: 1. Measured at lead length 3/8” (9.5mm) from body.
2. Valid provided that leads are kept at ambient temperature at a distance of 10mm from the case.
© Won-Top Electronics Co., Ltd.
Revision: September, 2012
www.wontop.com
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