Low Resistance Plastic Packaged PIN Diodes
SMP1322 Series
Typical Performance Data
100
100
Series Resistance (Ω)
Forward Current (mA)
0.1
1
10
100
10
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
1.4
1.2
DC Characteristic
3000
2500
Capacitance (pF)
1.0
0.8
0.6
0.4
0.2
0
0
1
2
Conductance (µS)
1 MHz–1 GHz
0V
2000
1500
1000
500
10 V
40 V
0
500
1000
1500
2000
5
10
20
50
0
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)
9.500
3.000
1.500
1.100
0.922
0.568
0.532
0.483
R
-15°C
Ω
(Ω)
9.400
3.000
1.500
1.100
0.914
0.559
0.520
0.469
R
+25°C
Ω
(Ω)
9.900
3.000
1.500
1.200
0.902
0.533
0.494
0.440
R
+65°C
Ω
(Ω)
10.500
3.300
1.600
1.200
0.963
0.563
0.521
0.464
R
+100°C
Ω
(Ω)
10.900
3.500
1.800
1.400
1.100
0.655
0.610
0.565
SMP1322-007
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
Gap
of the polarity of the
diode junction, this low
inductance feature is only
realizable with the cathode
Ground
connected to 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
ALPHA [ ALPHA INDUSTRIES ]
