1N4727...1N4764
1.0
250
P
d
. Total Power Dissipation (W)
0.8
0.6
Thermal Resistance Junction
to Ambient (°C/W)
R
JA
200
150
0.4
100
0.2
50
0
0
0
100
200
0
5
10
15
20
25
30
T
A
, Ambient Temperature
Fig. 1 Power Dissipation vs Ambient Temperature
I, Lead Length (mm)
Fig. 2 Typical Thermal Resistance vs. Lead Length
1000
f=1MHz
T
A
=25°C
1000
Differential Zener Impedance ( )
C
j
, Diode Capacitance (pF)
Ω
Iz=1mA
2mA
5mA
10mA
20mA
1
100
V
R
=0V
V
R
=2V
V
R
=5V
V
R
=20V
V
R
=30V
100
10
10
1
0
10
20
30
40
50
60
1
10
100
Vz, Zener Voltage (V)
Fig. 3 Junction Capacitance vs Zener Voltage
Vz, Zener Voltage (V)
Fig. 4 Typical Zener Impedance vs. Zener Voltage
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/06/2007