Low Resistance
Plastic Packaged PIN Diodes
SMP1322 Series
Features
s
Designed for High Performance Wireless
Switch Applications
s
Specified 1.5
Ω
@ 1 mA
s
Multiple Package Configurations
Description
The SMP1322 series of plastic packaged, surface
mountable PIN diodes are designed for high volume switch
applications from 10 MHz to beyond 2 GHz. The ultra low
resistance of these diodes (1.5
Ω
maximum at 1 mA and
0.5
Ω
typical at 10 mA) make the SMP1322 series
particularly suited to low loss PIN diode switches in battery
operated circuits. Available in a selection of plastic
packages and in a variety of configurations including an
ultra low inductance (0.2 nH) SOT-143 (SMP1322-017),
the small footprint SC-79 and the miniature SC-70. In
addition, the SMP1322-016 consists of 2 diodes in a
SOT-143 package configured to enable insertion in a
quarter-wave T/R switch with no crossover connections.
Absolute Maximum Ratings
Characteristic
Reverse Voltage (V
R
)
Power Dissipation @ 25°C Lead
Temperature (P
D
)
Storage Temperature (T
ST
)
Operating Temperature (T
OP
)
ESD Human Body Model
Value
50 V
250 mW
-65°C to +150°C
-65°C to +150°C
Class 1B
Single
Marking: PN1
SOT-23
o
SMP1322-001
Common
Cathode
Marking: PN3
SOT-23
o
SMP1322-004
Series Pair
Marking: PN2
SOT-23
o
SMP1322-005
Low
Inductance
Marking: PNB
SOT-23
o
SMP1322-007
Single
T/R Switch
Marking: PN6
Ultra Low
Inductance
Marking: PNC
SOT-143
o
SMP1322-017
Single
SOD-323
o
SMP1322-011
SOT-143
o
SMP1322-016
SC-79
o
SMP1322-079
L
S
= 1.5 nH
L
S
= 1.5 nH
SC-70
o
SMP1322-074
L
S
= 1.5 nH
SC-70
o
SMP1322-075
L
S
= 0.4 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 0.2 nH
L
S
= 0.7 nH
L
S
= 1.4 nH
o
Available through distribution.
L
S
= 1.4 nH
Electrical Specifications at 25°C
Parameter
Reverse Current (I
R
)
Capacitance (C
T
)
Resistance (R
S
)
Resistance (R
S
)
Forward Voltage (V
F
)
Carrier Lifetime (TI)
I Region Width
Condition
V
R
= 50 V
F = 1 MHz, V = 30 V
F = 100 MHz, I = 1 mA
F = 100 MHz, I = 10 mA
IF = 10 mA
IF = 10 mA
0.5
0.85
0.4
8
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
Typ.
Max.
10
1.0
1.5
Unit
µA
pF
Ω
Ω
V
µS
µm
1
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
Low Resistance Plastic Packaged PIN Diodes
SMP1322 Series
SMP1322-016 SOT-143 T/R Switch
The SMP1322-016 is a low cost PIN diode unconnected
pair specifically designed for low current drain antenna
T/R switches in hand held wireless suits. In the
specifically configured SOT-143 package, the PIN diodes
are oriented to enable connection as a
λ/4
switch with no
external crossover connections.
SMP1322-017 SOT-143 Low Inductance
PIN Diode
The SMP1322-017 utilizes the SMP1322 PIN diode chip
in a customized SOT-143 plastic package designed for
high isolation performance in a shunt connected switch.
Its effective inductance, based on the 3 GHz isolation, is
less than 0.2 nH. This diode is designed to work effectively
as a shunt element in SPDT switches, covering the
wireless frequencies from 900 MHz to beyond 2 GHz.
Excellent performance is achievable when used in a
quarter-wave T/R switch with the SMP1322-001 (SOT-23)
or SMP1322-011 (SOD-323) PIN diode as the series
connected diode.
4
3
SMP1322-016 in
λ/4
T/R Switch
Transmitter
4
Bias
GND
3
4
3
2
4
1
Antenna
2
Receiver
λ/4
1
2
1
3
1
2
λ/4
T/R Switch
Bias
Antenna
λ/4
Lead
Configuration
Schematic
Switch
Connection
T/R Switch Design
DC Control
Antenna
Transmitter
Receiver
Transmitter
SMP1322-011
λ/4
Receiver
SMP1322-017
25
I
F
= 10 mA
20
Loss (dB)
15
10
5
Zero Bias
0
0.5
1
2
3
4
Frequency (GHz)
SMP1322-017 Typical SPST
Switch Performance
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
3
Low Resistance Plastic Packaged PIN Diodes
SMP1322 Series
SOT-23
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
3
SC-70
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
1
2
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
3
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.037 (0.95 mm) REF.
0.020 (0.51 mm) REF.
0.076 (1.92 mm) REF.
1
0.014 (0.35 mm) REF.
2
0.026 (0.65 mm) REF.
0.051 (1.30 mm) REF.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
8˚ MAX.
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
0.022 (0.55 mm) REF.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
SC-79
CATHODE 0.006 (0.15 mm) MIN.
INDICATOR
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
1
2
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
1
2
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
CATHODE
INDICATOR
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.008 (0.20 mm) NOM.
0.006
(0.15 mm) TYP.
0.050
(1.25 mm) MAX.
10˚ MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10˚ MAX.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
SOT-143
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.020 (0.50 mm) REF.
4
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
1
0.068 (1.72 mm) REF.
0.028 (0.70 mm) REF.
0.030 (0.76 mm) MIN.
0.035 (0.89 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
8˚ MAX.
0.003 (0.08 mm) MIN.
0.008 (0.20 mm) MAX.
0.031 (0.80 mm) MIN.
0.047 (1.20 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
2
3
0.076 (1.92 mm) REF.
0.022 (0.55 mm) REF.
0.0005 (0.01 mm) MIN.
0.004 (0.15 mm) MAX.
4
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
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
