SMP1321-001 Alpha Industries, SMP1321-001 Datasheet - Page 2

• Manufacturer Part Number: SMP1321-001
• Description: Low Capacitance Plastic Packaged PIN Diodes
• Manufacturer: Alpha Industries

Low Capacitance Plastic Packaged PIN Diodes
Typical Performance Data
Resistance vs. Temperature @ 500 MHz
2
100.00
10.00
20.00
(mA)
0.02
0.10
0.30
0.50
1.00
I
Series Resistance vs. Current @ 100 MHz
F
100
0.1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
10
1
0
0.01
Capacitance vs. Reverse Voltage
0
47.400
12.000
-55°C
5.200
3.600
2.400
1.030
0.871
0.669
( )
R
Alpha Industries, Inc. [781] 935-5150
1
0.1
Forward Current (mA)
Reverse Voltage (V)
50.000
12.600
-15°C
5.400
3.800
2.500
1.040
0.888
0.659
( )
2
R
5
1
56.300
13.900
+25°C
5.800
4.100
2.600
1.040
0.873
0.642
1 MHz–1 GHz
( )
R
10
10
61.500
15.400
+65°C
6.400
4.500
2.800
1.070
0.889
0.645
20
( )
R
Specifications subject to change without notice. 1/01A
100
Fax [617] 824-4579
50
+100°C
65.100
16.400
6.900
4.800
3.100
1.150
0.956
0.695
( )
R
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
junction, this low inductance
feature is only realizable with
the cathode connected to
ground.
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0.01
100
800
700
600
500
400
300
200
100
0.1
10
1
0
of
400
0
Conductance vs. Frequency
the
500
and Reverse Voltage
500
DC Characteristic
diode
Forward Voltage (mV)
Frequency (MHz)
600
www.alphaind.com
1000
700
800
SMP1321 Series
Ground
1500
Gap
900
0 V
10 V
40 V
1000
2000