SMP1321-001 Ver la hoja de datos (PDF) - Alpha Industries
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SMP1321-001 Datasheet PDF : 3 Pages
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Low Capacitance Plastic Packaged PIN Diodes
SMP1321 Series
Typical Performance Data
100
100
10
10
1
1
0.1
0.1
0.01
0.1
1
10
100
Forward Current (mA)
Series Resistance vs. Current @ 100 MHz
0.01
400
500 600 700 800 900 1000
Forward Voltage (mV)
DC Characteristic
0.8
0.7
0.6
0.5
0.4
0.3
1 MHz–1 GHz
0.2
0.1
0
0
1
2
5
10 20 50
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
800
700
0V
600
500
400
300
200
100
0
0
10 V
40 V
500
1000
1500
2000
Frequency (MHz)
Conductance vs. Frequency
and Reverse Voltage
Resistance vs. Temperature @ 500 MHz
IF
(mA)
0.02
0.10
0.30
0.50
1.00
10.00
20.00
100.00
R
-55°C
(Ω)
47.400
12.000
5.200
3.600
2.400
1.030
0.871
0.669
R
-15°C
(Ω)
50.000
12.600
5.400
3.800
2.500
1.040
0.888
0.659
R
+25°C
(Ω)
56.300
13.900
5.800
4.100
2.600
1.040
0.873
0.642
R
+65°C
(Ω)
61.500
15.400
6.400
4.500
2.800
1.070
0.889
0.645
R
+100°C
(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
Gap
polarity of the diode
junction, this low inductance
feature is only realizable with
the cathode connected to
ground.
Ground
2
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 1/01A
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