Low Resistance Low Capacitance Plastic Packaged PIN Diodes
SMP1320 Series
Typical Performance Data
100
10
100
10
1
1
0.1
0.01
0.1
0.01
0.1
1
10
100
400
500
600
700
800
900
1000
Forward Current (mA)
Forward Voltage (mV)
Series Resistance vs. Current @ 100 MHz
DC Characteristic
600
500
400
300
200
100
0
0.5
0.4
0 V
1 MHz–1 GHz
0.3
0.2
0.1
0
10 V
40 V
0
500
1000
1500
2000
0
1
2
5
10
20
50
Frequency (MHz)
Reverse Voltage (V)
Conductance vs. Frequency
and Reverse Voltage
Capacitance vs. Reverse Voltage
Resistance vs. Temperature @ 500 MHz
SMP1320-007
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.
R
S
R
S
R
S
R
S
R
S
I
-55°C
-15°C
+25°C
+65°C
+100°C
F
(mA)
(Ω)
(Ω)
(Ω)
(Ω)
(Ω)
0.02
29.60
7.20
3.40
2.50
1.70
0.84
0.73
0.59
29.20
7.70
3.60
2.70
1.80
0.85
0.73
0.57
30.80
8.30
3.80
2.80
1.90
0.76
0.64
0.47
32.00
8.80
4.00
2.90
2.00
0.76
0.64
0.48
32.70
8.80
4.10
3.00
1.90
0.67
0.56
0.40
0.10
0.30
0.50
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
1.00
10.00
20.00
100.00
Gap
figure. Because of the
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
ALPHA [ ALPHA INDUSTRIES ]
