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| Low Capacitance Plastic Packaged PIN Diodes SMP1321 Series Features s Designed for High Performance Wireless Switch Applications s 0.25 pF Capacitance Specified s Multiple Package Configurations s 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. Absolute Maximum Ratings Characteristic Reverse Voltage (VR) Power Dissipation @ 25C Lead Temperature (PD) Storage Temperature (TST) Operating Temperature (TOP) ESD Human Body Model Value 100 V 250 mW -65C to +150C -65C to +150C Class 1B Single Marking: PM1 SOT-23 o SMP1321-001 Common Anode Marking: PM9 SOT-23 o SMP1321-003 Common Cathode Marking: PM3 SOT-23 o SMP1321-004 Series Pair Marking: PM2 SOT-23 o SMP1321-005 Low Inductance Marking: PMB SOT-23 o SMP1321-007 Single Single SOD-323 o SMP1321-011 SC-79 o SMP1321-079 LS = 1.5 nH LS = 1.5 nH SC-70 o SMP1321-073 LS = 1.5 nH SC-70 o SMP1321-074 LS = 1.5 nH SC-70 o SMP1321-075 LS = 0.4 nH LS = 1.5 nH LS = 0.7 nH LS = 1.4 nH o Available through distribution. LS = 1.4 nH LS = 1.4 nH Electrical Specifications at 25C Parameter Reverse Current (IR) Capacitance (CT) Resistance (RS) Resistance (RS) Forward Voltage (VF) Carrier Lifetime (TI) I Region Width 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 0.85 0.4 15 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 Typ. Max. 10 0.25 Unit A pF V S m 3.0 2.0 1 Low Capacitance Plastic Packaged PIN Diodes SMP1321 Series Typical Performance Data 100 100 Series Resistance () Forward Current (mA) 0.1 1 10 100 10 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 DC Characteristic Capacitance (pF) 0.5 0.4 0.3 0.2 0.1 0 0 1 2 5 10 20 50 1 MHz-1 GHz Conductance (S) 0.6 600 500 400 300 200 100 0 0V 10 V 40 V 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 -55C () 47.400 12.000 5.200 3.600 2.400 1.030 0.871 0.669 R -15C () 50.000 12.600 5.400 3.800 2.500 1.040 0.888 0.659 R +25C () 56.300 13.900 5.800 4.100 2.600 1.040 0.873 0.642 R +65C () 61.500 15.400 6.400 4.500 2.800 1.070 0.889 0.645 R +100C () 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 Gap figure. Because of the polarity of the diode junction, this low inductance feature is only realizable with the cathode connected to Ground ground. 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 Low Capacitance Plastic Packaged PIN Diodes 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. 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. 1 0.014 (0.35 mm) REF. 2 0.026 (0.65 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 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 1 2 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 2 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. CATHODE INDICATOR 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.008 (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. 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. 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 |
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