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SMA4728A Datasheet(PDF) 4 Page - Socay Electornics Co., Ltd.

Part # SMA4728A
Description  Surface Mount Zener Diodes
PDF  5 Pages
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Manufacturer  SOCAY [Socay Electornics Co., Ltd.]
Direct Link  http://www.socay.com
Logo SOCAY - Socay Electornics Co., Ltd.

SMA4728A Datasheet(HTML) 4 Page - Socay Electornics Co., Ltd.

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Surface Mount Zener Diodes
Revision November 21, 2013
4 / 5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
SOCAY Electronics Co., Ltd.
www.socay.com
Figure 1 - Power Temperature Derating Curve
Figure 3 - Typical Thermal Resistance v.s. Lead Length
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 2 -Temperature Coefficients v.s. Zener Voltage
TL - Lead Temperature(°C)
1.0
0
25
50
75
100
125
150
175
200
0.8
0.6
0.4
0.2
0.0
100
10
100
10
1
Zener Voltage, VZ(V)
Range
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
175
Lead Length to Heatsink, L, (inches)
150
135
100
75
50
25
0
Figure 4 - Maximum Surge Power
Pulse Width, PW, (S)
20% Duty Cycle
10% Duty Cycle
5% Duty Cycle
11V-91V Non-Repetitive
Rectangular Waveform TJ=25°C
Prior to Initial
0.01
0.1
10
100
1000
100
10
1



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