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DATA SHEET
SMP1321 Series: Low Capacitance Plastic Packaged PIN Diodes
Features
Designed for high performance wireless switch applications 0.25 pF capacitance specified Available lead (Pb)-free MSL-1 @ 250 C per JEDEC J-STD-020 Available in tape and reel packaging

Description
The SMP1321 series of plastic packaged, surface mountable PIN diodes are designed for high volume switch applications from 10 MHz to beyond 2 GHz. The low capacitance of these diodes (0.25 pF) combined with its low resistance (2.0 maximum at 10 mA) make the SMP1321 series particularly suited to high isolation series connected PIN diode switches in battery operated circuits. Available in a selection of plastic packages and in a variety of configurations including a low inductance (0.4 nH) SOT-23 (SMP1321-007), the small footprint SC-79 and the miniature SC-70. The SMP1321-508 has been specifically designed for WLAN 802.11 a, b, and g applications.
Absolute Maximum Ratings
Characteristic Reverse voltage (VR) Power dissipation @ 25 C lead temperature (PD) Storage temperature (TST) Operating temperature (TOP) ESD human body model Value 100 V 250 mW -65 C to +150 C -65 C to +150 C Class 1B
NEW
Skyworks offers lead (Pb)-free "environmentally friendly" packaging that is RoHS compliant (European Parliament for the Restriction of Hazardous Substances).
Performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the Absolute Maximum specifications. Exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions must be employed at all times.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200048 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * October 25, 2004
1
DATA SHEET * SMP1321 SERIES
Single SOT-23 SMP1321-001 Marking: PM1
Common Anode SOT-23 SMP1321-003 Marking: PM9 SMP1321-003LF Marking: RM9
Common Cathode SOT-23 SMP1321-004 Marking: PM3 SMP1321-004LF Marking: RM3 LS= 1.5 nH
Series Pair SOT-23 SMP1321-005 Marking: PM2 SMP1321-005LF Marking: RM2 LS= 1.5 nH SC-70 SMP1321-074 Marking: PM2 LS= 1.4 nH
Low Inductance SOT-23 SMP1321-007 Marking: PMB
Single SOD-323 SMP1321-011 Marking: PM SMP1321-011LF Marking: RM
Single SC-79 SMP1321-079
Anti-Parallel LGA SMP1321-508 Lead (Pb)-Free Marking: H
SMP1321-079LF
LS= 1.5 nH
LS= 1.5 nH SC-70 SMP1321-073 Marking: PM9 LS= 1.4 nH
LS= 0.4 nH SC-70 SMP1321-075 Marking: PMB LS= 1.4 nH
LS= 1.5 nH
LS= 0.7 nH
LS = 0.6 nH
LF denotes lead (Pb)-free packaging option as an alternative to our standard tin/lead (Sn/Pb) packaging.
Electrical Specifications at 25 C
Parameter Reverse current (IR) Capacitance (CT)(1) Resistance (RS) Resistance (RS) Forward voltage (VF) Carrier lifetime (TI) I region width
1. The SMP1321-007 maximum capacitance is 0.40 pF.
Condition VR = 100 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
Typ.
Max. 10 0.25
Unit A pF V s m
3.00 2.00 0.85 0.40 15
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2
October 25, 2004 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200048 Rev. B
DATA SHEET * SMP1321 SERIES
Typical Performance Data
100 100
Series Resistance ()
10
Forward Current (mA)
0.1 1 10 100
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
0.8 0.7 800 700 600
DC Characteristic
Capacitance (pF)
0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 2 5 10 20 50 1 MHz-1 GHz
0V
Conductance (S)
500 400 300 200 10 V 100 40 V 0 0 500 1000 1500 2000
Reverse Voltage (V)
Frequency (MHz)
Capacitance vs. Reverse Voltage
Conductance vs. Frequency and Reverse Voltage
Resistance vs. Temperature @ 500 MHz
IF (mA) 0.02 0.10 0.30 0.50 1.00 10.00 20.00 100.00 R -55 C () 47.400 12.000 5.200 3.600 2.400 1.030 0.871 0.669 R -15 C () 50.000 12.600 5.400 3.800 2.500 1.040 0.888 0.659 R +25 C () 56.300 13.900 5.800 4.100 2.600 1.040 0.873 0.642 R +65 C () 61.500 15.400 6.400 4.500 2.800 1.070 0.889 0.645 R +100 C () 65.100 16.400 6.900 4.800 3.100 1.150 0.956 0.695
SMP1321-007
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 of the polarity of the diode junction, this low Gap inductance feature is only realizable with the cathode connected to ground.
Ground
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200048 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * October 25, 2004
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DATA SHEET * SMP1321 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. 1 0.014 (0.35 mm) Ref. 0.026 (0.65 mm) Ref. 2
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.
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 Indicator 0.010 (0.25 mm) Min. 0.014 (0.35 mm) Max.
1
0.006 (0.15 mm) Min. 0.028 (0.70 mm) Min. 0.035 (0.90 mm) Max.
2
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.
0.060 (1.50 mm) Min. 0.067 (1.70 mm) Max. 0.043 (1.10 mm) Min. 0.051 (1.30 mm) Max.
0.050 (1.25 mm) Max.
0.004 (0.10 mm) Max. 0.010 (0.25 mm) Min.
10 Max. 0.003 (0.07 mm) Min. 0.008 (0.20 mm) Max. 10 Max.
0.020 (0.50 mm) Min. 0.028 (0.70 mm) Max.
LGA
0.058 (1.47 mm) 0.054 (1.39 mm) Pin 3 0.048 (1.23 mm) 0.044 (1.13 mm) Pin 4 Top View (0.00) (0.40) (0.87) (1.27) Pin 1 Side View Pin 2 0.028 (0.70 mm) 0.023 (0.58 mm)
(1.03) (0.73) (0.30) (0.00)
Pin 4 (0.138 x 45) Pin 3
Pin 1
Pin 2 (0.076) All Around Bottom View
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4
October 25, 2004 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200048 Rev. B
DATA SHEET * SMP1321 SERIES
Recommended Solder Reflow Profiles
Profile Feature Average ramp-up rate (TL to TP) Preheat Temperature min. (TSMIN) Temperature max. (TSMAX) Time (min. to max.) (ts) TSMAX to TL Ramp-up rate Time maintained above: Temperature (TL) Time (tL) Peak temperature (TP) Time within 5 C of actual peak temperature (tp) Ramp-down rate Time 25 C to peak temperature SnPb Eutectic Assembly 3 C/second max. 100 C 150 C 60-120 seconds -- 183 C 60-150 seconds 240 +0/-5 C 10-30 seconds 6 C/second max. 6 minutes max. Lead (Pb)-Free Assembly 100% Sn 3 C/second max. 150 C 200 C 60-80 seconds 3 C/second max. 217 C 60-150 seconds 250 +0/-5 C 20-40 seconds 6 C/second max. 8 minutes max.
All temperatures refer to the topside of the package, measured on the package body surface. Reference JEDEC J-STD-020B.
TP
tp Critical Zone TL to TL
TL IL TSMAX
Temperature
TSMIN ts Preheat
25 C t 25 C to Peak
Time
Reference JEDEC J-STD-020
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200048 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * October 25, 2004
5
DATA SHEET * SMP1321 SERIES
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