Datasheet SMP1304-001, SMP1304-004, SMP1304-005, SMP1304-007, SMP1304-011 Datasheet (ALPHA)

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 1/01A

Low Distortion Attenuator
Plastic Packaged PIN Diodes

Features

■ Low Distortion Design

■ Frequency Range from HF to > 2 GHz

■ Designed for Base Station Applications

■ Configured for PI and TEE Attenuators

Description

The SMP1304 series of plastic packaged, surface
mountable, low capacitance (0.3 pF) silicon PIN diodes
are designed for use in attenuator applications from 5 MHz
to beyond 2 GHz.The thick 100 µm I region of these PIN
diodes makes them very attractive f or use in low distortion
PI and TEE attenuators commonly used in TV distribution
applications. The 1 µS typical carrier lifetime of these
diodes results in resistance of 20 Ω maximum at 1 mA and
7 Ωmaximum at 10 mA.A vailab le in a selection of plastic
packages: as a single diode in the small footprint
SOD-323 package and in a variety of configurations in the
SOT-23 package, including a low inductance (0.4 nH)
SMP1304-007 package. Also available in the SOT-143
package are three diode junctions designed for insertion
in TEE attenuators (SMP1304-018) and PI attenuators
(SMP1304-019).Also availab le in a SO T-5 (SMP1304-027)
package as a four diode arra y designed f or insertion in the
commonly used 4 diode PI attenuator circuit.

SMP1304 Series

Characteristic Value

Reverse Voltage (VR) 200 V
Power Dissipation @ 25°C Lead 250 mW

Temperature (PD)
Storage Temperature (TST) -65°C to +150°C
Operating Temperature (TOP) -65°C to +150°C
ESD Human Body Model Class 1C

Absolute Maximum Ratings

♦ Available through distribution.

Single Common Series Pair Low Single PI PI

Cathode Inductance

Marking: PG1 Marking: PG3 Marking: PG2 Marking: PGB Marking: PGJ Marking: PGM

SOT-23 SOT-23 SOT-23 SOT-23 SOD-323 SOT-143 SOT-5

♦ SMP1304-001 ♦ SMP1304-004 ♦ SMP1304-005 ♦ SMP1304-007 ♦ SMP1304-011 ♦ SMP1304-019 ♦ SMP1304-027

LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 0.4 nH LS= 1.5 nH

♦ Available through distribution.

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 1/01A

Low Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series

Series Resistance vs. Current @ 100 MHz

0.01 0.1 1 10 100

Forward Current (mA)

Series Resistance (Ω)

0.1

1

10

100

1000

10000

01251020 10050

Capacitance vs. Reverse Voltage

0

0.2

0.4

0.6

0.1

0.3

0.5

0.7

0.8

Reverse Voltage (V)

Capacitance (pF)

100 MHz

1 MHz

1 GHz

400 500 600 700 800 900 1000

DC Characteristic

0.01

0.1

1

10

100

Forward Voltage (mV)

Forward Current (mA)

.

0 500 1000 1500 2000

Conductance vs. Frequency

and Reverse Voltage

Frequency (MHz)

Conductance (µS)

0

50

100

150

200

250

300

350

400

0 V
10 V

40 V

Typical Performance Data

Parameter Condition Typ. Max. Unit

Reverse Current (IR)V

R

= 200 V 10 µA
Capacitance (CT) F = 1 MHz, V = 30 V 0.30 pF
Capacitance (CT) F = 1 MHz, V = 30 V 0.45 pF

(SMP1304-018 & SMP1304-019)
Resistance (RS) F = 100 MHz, I = 1 mA 40 50 Ω
Resistance (RS) F = 100 MHz, I = 10 mA 7.0 Ω
Resistance (RS) F = 100 MHz, I = 100 mA 2.0 Ω
Forward Voltage (VF) IF = 10 mA 0.8 V
Carrier Lifetime (TI) IF = 10 mA 1.0 µS
I Region Width 100 µm

Electrical Specifications at 25°C

Low Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 3

Specifications subject to change without notice. 1/01A

4

31

2

43

12

SMP1304-019 (PI)

SMP1304-007

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 particular ly
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 SO T-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 of
the diode junction, this low inductance feature is only
realizable with the cathode connected to ground.

SMP1304-019 PI Attenuator PIN Diodes

The SMP1304-019 employ three PIN diode junctions in
a SOT-143 package. They are configured for ease of
insertion in PI attenuator circuits commonly used from 10
MHz to beyond 1 GHz.The SMP1304 PIN diode junction
was designed for low capacitance, wide resistance
dynamic range and low distortion performance.

RRRRR

I

F

-55°C -15°C +25°C +65°C +100°C

(mA) (ΩΩ)(

ΩΩ

)(

ΩΩ

)(

ΩΩ

)(

ΩΩ

)

0.02 1590.0 1660.0 1752.0 1770.0 1760.0

0.10 315.0 340.0 367.0 396.0 409.0

0.30 108.0 118.0 128.0 141.0 147.0

1.00 34.5 37.9 41.6 46.3 48.8

10.00 4.8 5.3 5.8 6.6 7.0

20.00 3.0 3.3 3.6 4.1 4.3

100.00 1.3 1.4 1.5 1.7 1.8

Resistance vs. Temperature @ 100 MHz

Ground

Gap

4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 1/01A

Low Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series

SOD-323

0.090 (2.30 mm) MIN.

0.108 (2.74 mm) MAX.

0.045 (1.15 mm) MIN.

0.053 (1.35 mm) MAX.

0.050

(1.25 mm) MAX.

0.006

(0.15 mm) TYP.

0.008 (0.20 mm) NOM.

0.004 (0.10 mm) MAX.

0.010 (0.25 mm) MIN.

0.010

(0.25 mm) MIN.

0.016

(0.40 mm) MAX.

0.063 (1.60 mm) MIN.

0.071 (1.80 mm) MAX.

CATHODE

INDICATOR

21

SOT-23

3

2

1

0.035 (0.89 mm) MIN.

0.044 (1.12 mm) MAX.

0.0005 (0.01 mm) MIN.

0.004 (0.10 mm) MAX.

0.012 (0.30 mm) MIN.

0.020 (0.50 mm) MAX.

0.003 (0.080 mm) MIN.

0.008 (0.20 mm) MAX.

8˚ MAX.

0.022 (0.55 mm) REF.

0.110 (2.80 mm) MIN.

0.120 (3.04 mm) MAX.

0.083 (2.10 mm) MIN.

0.104 (2.64 mm) MAX.

0.037 (0.95 mm) REF.

0.047 (1.20 mm) MIN.

0.055 (1.40 mm) MAX.

0.076 (1.92 mm) REF.

0.020 (0.51 mm) REF.

SOT-143

0.110 (2.80 mm) MIN.

0.120 (3.04 mm) MAX.

0.083 (2.10 mm) MIN.

0.104 (2.64 mm) MAX.

0.012 (0.30 mm) MIN.

0.020 (0.50 mm) MAX.

0.0005 (0.01 mm) MIN.

0.004 (0.15 mm) MAX.

0.031 (0.80 mm) MIN.

0.047 (1.20 mm) MAX.

0.030 (0.76 mm) MIN.

0.035 (0.89 mm) MAX.

0.047 (1.20 mm) MIN.

0.055 (1.40 mm) MAX.

0.003 (0.08 mm) MIN.

0.008 (0.20 mm) MAX.

0.022 (0.55 mm) REF.

8˚ MAX.

0.020 (0.50 mm) REF.

0.028 (0.70 mm) REF.

0.068 (1.72 mm) REF.

0.076 (1.92 mm) REF.

4

3

2

1

SOT-5

0.074

(1.90 mm)

REF.

0.118

(3.00 mm)

0.087

(2.20 mm)

0.012

(0.30 mm)

0.000

(0.00 mm)

MIN.

0.122 (3.10 mm)

0.106 (2.70 mm)

0.064 (1.63 mm)

0.035 (0.90 mm)

0.020 (0.51 mm)

0.014 (0.35 mm)

1

54

23

0.037 (0.95 mm) REF.

0.069

(1.75 mm)

0.052

(1.30 mm)

0.024

(0.61 mm)

0.004

(0.10 mm)

0.0104 (0.26 mm)

0.0035 (0.09 mm) MIN.

0.012 (0.30 mm) TYP.