DATA SHEET SMP1321 Series: Low Capacitance, Plastic Packaged PIN Diodes Applications High-performance wireless switches Features Capacitance: 0.18 pF typical 30 V Series resistance: 1.05 typical 10 mA Packages rated MSL1, 260 C per JEDEC J-STD-020 TM Skyworks Green products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks TM Denition of Green , document number SQ040074. Description The SMP1321 series of plastic packaged, surface mountable PIN diodes is designed for use in high volume switch applications from 10 MHz to more than 10 GHz. The low capacitance of these diodes (0.25 pF maximum at 30 V), combined with a low resistance (2.0 maximum at 10 mA), makes the SMP1321 series particularly suited for high isolation, series-connected PIN diode switches in battery operated circuits. The SMP1321 series is available in a selection of plastic packages and a variety of configurations that include a small footprint SC-79, a low inductance SOT-23, a miniature SOD-882, and an SOD-323. Table 1 describes the various packages and marking of the SMP1321 series. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 200048Y Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice May 24, 2017 1 DATA SHEET SMP1321 SERIES: LOW CAPACITANCE, PLASTIC PACKAGED PIN DIODES Table 1. SMP1321 Series Packaging and Marking Common Anode Series Pair Low Inductance Single Single Single SC-79 SOD-882 SOD-323 SOT-23 SOT-23 SOT-23 Green Green Green SMP1321-003LF SMP1321-005LF SMP1321-007LF SMP1321-079LF SMP1321-040LF SMP1321-011LF Green Green Green Marking: Cathode and C6 Marking: C Marking: RM Marking: RM9 Marking: RM2 Marking: RMB L = 1.5 nH L = 1.5 nH L = 0.4 nH L = 0.7 nH L = 0.45 nH L = 1.5 nH S S S S S S 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. SMP1321-007 Electrical and Mechanical Specifications For the -007 configuration of the SOT-23 package, the package The part number and configuration for the SMP1321 series are inductance is effectively reduced to 0.4 nH compared to the provided in Table 1. The absolute maximum ratings of the 1.5 nH value of the standard configuration. This lower inductance SMP1321 series are provided in Table 2. Electrical specifications is particularly beneficial when the diodes are used as shunt are provided in Table 3. Resistance versus temperature connected switches at frequencies higher than 500 MHz in which measurements are provided in Table 4. inductance is the primary limitation on maximum switch isolation. Typical performance characteristics of the SMP1321 series are To achieve the effective 0.4 nH, the SOT-23 package must be illustrated in Figures 2 to 5. inserted in the microstrip circuit board with a gap in the trace, as shown in Figure 1. Because of the polarity of the diode junction, this low inductance feature is realizable only with the cathode Package Dimensions connected to ground. Package dimensions are shown in Figures 6 to 12 (even numbers), and tape and reel dimensions are provided in Figures 7 Gap to 13 (odd numbers). Package and Handling Information Ground Instructions on the shipping container label regarding exposure to 200048-001 moisture after the container seal is broken must be followed. Figure 1. SOT-23 Package Trace Gap Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. The SMP1321 series is rated to Moisture Sensitivity Level 1 (MSL1) at 260 C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, Solder Reflow Information, document number 200164. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 May 24, 2017 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200048Y