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DATA SHEET SMP1322 SERIES DIODES
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
2
February 10, 2011 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200049K
Table 1. SMP1322 Series Packaging and Marking
Single
Common Anode
Common Cathode
Series Pair
Single
T/R Switch
Ultra-Low
Inductance
Single
SOT-23
SOD-323
Green
SOT-143
SC-79
Green
SMP1322-001
Marking: PN1
SMP1322-003
Marking: PN9
SMP1322-004
Marking: PN3
SMP1322-005
Marking: PN2
SMP1322-016
Marking: PN6
SMP1322-017
Marking: PNF
SMP1322-001LF
Green
Marking: RN1
SMP1322-003LF
Green
Marking: RN9
SMP1322-004LF
Green
Marking: RN3
SMP1322-005LF
Green
Marking: RN2
SMP1322-011LF
Marking: RN
SMP1322-016LF
Marking: RN6
SMP1322-017LF
Marking: RNF
SMP1322-079LF
Marking: Cathode
LS = 1.5 nH
LS = 0.2 nH
LS = 0.7 nH
SC-70
SMP1322-074
Marking: PN3
SMP1322-074LF
Green
Marking: RN3
LS = 1.4 nH
The Pb-free symbol or “LF” in the part number denotes a lead-free, RoHS-compliant package unless otherwise noted as Green. Tin/lead (Sn/Pb) packaging is not recommended
for new designs.
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Figure 1. SMP1322-016 Quarter-Wave T/R Switch
SMP1322-016 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 systems. In the specifically configured
SOT-143 package (see Figure 1), the PIN diodes are oriented to
enable connection as a
λ/4 switch with no external crossover
connections.
SMP1322-017 Low Inductance PIN Diode
The SMP1322-017 uses the SMP1322 PIN diode chip in a
customized SOT-143 plastic package designed for high-isolation
performance in a shunt connected switch (see Figure 2). Its
effective inductance, based on a 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 over 2 GHz.
Excellent performance is achieved when the SMP1322-017 is
used in a
λ/4 T/R switch with either the SMP1322-001 (SOT-23
package) or the SMP1322-011 (SOD-323 package) as the series
connected PIN diode. Refer to Figure 7.