are designed for use in attenuator applications from 5 MHz
to beyond 2 GHz. The thick 175
µm
I region of these PIN
diodes makes them very attractive for use in very low
distortion PI and TEE attenuators commonly used in TV
distribution applications. The 1.5
µS
typical carrier
lifetime of these diodes results in resistance of 100
Ω
maximum at 1 mA and 10
Ω
maximum at 10 mA. Available
in a selection of plastic packages, as a single diode in the
small footprint SOD-323, and in a variety of configurations
in the SOT-23. Also available in a SOT-5 (SMP1307-027)
package as a four diode array designed for insertion in the
commonly used 4 diode PI attenuator circuit.
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
200 V
250 mW
-65°C to +150°C
-65°C to +150°C
Class 1C
Single
Marking: PJ1
SOT-23
o
SMP1307-001
Common
Cathode
Marking: PJ3
SOT-23
o
SMP1307-004
Series Pair
Marking: PJ2
SOT-23
o
SMP1307-005
Single
PI
Marking: PJM
SOD-323
o
SMP1307-011
SOT-5
o
SMP1307-027
L
S
= 1.5 nH
o
Available through distribution.
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
Electrical Specifications at 25°C
Parameter
Reverse Current (I
R
)
Capacitance (C
T
)
Resistance (R
S
)
Resistance (R
S
)
Resistance (R
S
)
Forward Voltage (V
F
)
Carrier Lifetime (TI)
I Region Width
Condition
V
R
= 200 V
F = 1 MHz, V = 30 V
F = 100 MHz, I = 1 mA
F = 100 MHz, I = 10 mA
F = 100 MHz, I = 100 mA
IF = 10 mA
IF = 10 mA
0.85
1.5
175
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
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•
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Specifications subject to change without notice. 1/01A
Typ.
Max.
10
0.30
Unit
µA
pF
Ω
Ω
Ω
V
µS
µm
75
100
15
3.0
1
Very Low Distortion Attenuator Plastic Packaged PIN Diodes
SMP1307 Series
Typical Performance Data
10000
100
Series Resistance (Ω)
1000
100
10
1
0.1
0.01
Forward Current (mA)
10
1
0.1
0.1
1
10
100
0.01
400
500
600
700
800
900
1000
Forward Current (mA)
Forward Voltage (mV)
Series Resistance vs. Current @ 100 MHz
0.8
0.7
400
350
DC Characteristic
Capacitance (pF)
Conductance (µS)
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1
2
5
10
20
50
100
100 MHz
1 GHz
1 MHZ
300
250
200
150
100
50
0
0
500
1000
1500
2000
10 V
40 V
0V
Reverse Voltage (V)
Frequency (MHz)
Capacitance vs. Reverse Voltage
Conductance vs. Frequency
and Reverse Voltage
Resistance vs. Temperature @ 100 MHz
I
F
(mA)
0.02
0.10
0.30
1.00
10.00
20.00
100.00
R
-55°C
Ω
(Ω)
2386.0
572.0
203.0
66.1
9.1
5.6
2.2
R
-15°C
Ω
(Ω)
2360.0
598.0
219.0
71.2
10.0
6.0
2.4
R
+25°C
Ω
(Ω)
2546.0
632.0
236.0
79.3
10.9
6.6
2.6
R
+65°C
Ω
(Ω)
2520.0
633.0
239.0
83.6
12.2
7.4
3.0
R
+100°C
Ω
(Ω)
2440.0
639.0
242.0
85.4
12.9
7.8
3.2
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
Very Low Distortion Attenuator Plastic Packaged PIN Diodes
SMP1307 Series
SMP1307-027 4 Diode PI Attenuator
The SMP1307-027 employs 4 PIN diode junctions in a
5-lead SOT package. It is configured for ease of
insertion in the PI attenuator circuit commonly used for
broadband TV distribution systems, covering a frequency
range from 5 MHz to beyond 1 GHz.
A broadband attenuator was designed using the
SMP1307-027 showing good performance to 2 GHz. The
attenuator was evaluated with a 50
Ω
source and load
impedance. The following figure shows the circuit
diagram and measured performance.
3
2
1
4
5
C
1
10,000 pF
RF
Input
R
1
1k
D
2
R
2
1k
D
1
D
3
C
6
10,000 pF
V
TUNE
0–20 V
C
5
10,000 pF
R
6
560
RF
Output
D
4
R
3
1k
R
4
1k
C
2
10,000 pF
R
5
560
C
3
10,000 pF
C
4
10,000 pF
V
REF
5V
D
1
–D
4
SMP1307-027
A 4 diode PI attenuator utilizing individual SMP1307-011 PIN diodes is described in the “A Wideband General Purpose PIN Diode Attenuator” Application Note.
0
-10
V
CTL
= 20 V
V
CTL
= 15 V
V
CTL
= 10 V
V
CTL
= 5 V
V
CTL
= 0 V
Attenuation (dB)
-20
-30
-40
-50
0
0.5
1.0
1.5
2.0
Frequency (GHz)
SMP1307-027 Attenuation vs. Frequency
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
Very Low Distortion Attenuator Plastic Packaged PIN Diodes
SMP1307 Series
SOT-23
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
3
SOT-5
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
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.014
(0.36 mm)
MIN.
0.020
(0.51 mm)
MAX.
0.037
(0.94 mm) REF.
5
4
0.060
(1.52 mm)
MIN.
0.069
(1.75 mm)
MAX.
3
0.102
(2.59 mm)
MIN.
0.118
(3.00 mm)
MAX.
0.035
(0.89 mm)
MIN.
0.057
(1.49 mm)
MAX.
0.037 (0.95 mm) REF.
0.020 (0.51 mm) REF.
0.076 (1.92 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.
1
2
0.037
(0.94 mm) REF.
0.110 (2.79 mm) MIN.
0.118 (3.00 mm) MAX.
10˚ MAX.
0.035 (0.89 mm) MIN.
0.051 (1.30 mm) MAX.
0.134
(3.4 mm)
0.022 (0.55 mm) REF.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.004 (0.10 mm) MIN.
0.024 (0.61 mm) MAX.
0.000 (0.00 mm) MIN.
0.006 (0.15 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.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
1
2
CATHODE
INDICATOR
0.008 (0.20 mm) NOM.
0.006
(0.15 mm) TYP.
0.050
(1.25 mm) MAX.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
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
