DATA SHEET • SMP1321 SERIES
Typical Performance Data
100
100
Series Resistance (Ω)
10
Forward Current (mA)
0.1
1
10
100
10
1
1
0.1
0.1
0.01
0.01
400
500
600
700
800
900
1000
Forward Current (mA)
Forward Voltage (mV)
Series Resistance vs. Current @ 100 MHz
0.8
0.7
800
700
600
DC Characteristic
Capacitance (pF)
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1
2
5
10
20
50
1 MHz–1 GHz
0V
Conductance (µS)
500
400
300
200
10 V
100
40 V
0
0
500
1000
1500
2000
Reverse Voltage (V)
Frequency (MHz)
Capacitance vs. Reverse Voltage
Conductance vs. Frequency and Reverse Voltage
Resistance vs. Temperature @ 500 MHz
I
F
(mA)
0.02
0.10
0.30
0.50
1.00
10.00
20.00
100.00
R
-55 °C
Ω
(Ω)
47.400
12.000
5.200
3.600
2.400
1.030
0.871
0.669
R
-15 °C
Ω
(Ω)
50.000
12.600
5.400
3.800
2.500
1.040
0.888
0.659
R
+25 °C
Ω
(Ω)
56.300
13.900
5.800
4.100
2.600
1.040
0.873
0.642
R
+65 °C
Ω
(Ω)
61.500
15.400
6.400
4.500
2.800
1.070
0.889
0.645
R
+100 °C
Ω
(Ω)
65.100
16.400
6.900
4.800
3.100
1.150
0.956
0.695
SMP1321-007
In the -007 configuration of the SOT-23 package, the package
inductance is effectively reduced to 0.4 nH, in comparison to the
1.5 nH value of the standard configuration. This lower inductance
will be particularly beneficial when the diodes are used as shunt
connected switches at frequencies higher than 500 MHz, where
inductance is the primary limitation on maximum switch isolation.
To achieve the effective 0.4 nH, the SOT-23 package must
be inserted in the microstrip circuit board with a gap in the
trace, as shown in the figure. Because of the polarity of the
diode junction, this low
Gap
inductance feature is only
realizable with the cathode
connected to ground.
Ground
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200048 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 25, 2004
3
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