Low Resistance Plastic Packaged PIN Diodes SMP1322 Series Features ■ Designed for High Performance Wireless Switch Applications ■ Specified 1.5 Ω @ 1 mA ■ Multiple Package Configurations Description The SMP1322 series of plastic packaged, surface mountable PIN diodes are designed for high volume switch applications from 10 MHz to beyond 2 GHz. The ultra low resistance of these diodes (1.5 Ω maximum at 1 mA and 0.5 Ω typical at 10 mA) make the SMP1322 series particularly suited to low loss PIN diode switches in battery operated circuits. Available in a selection of plastic packages and in a variety of configurations including an ultra low inductance (0.2 nH) SOT-143 (SMP1322-017), the small footprint SC-79 and the miniature SC-70. In addition, the SMP1322-016 consists of 2 diodes in a SOT-143 package configured to enable insertion in a quarter-wave T/R switch with no crossover connections. Absolute Maximum Ratings Characteristic Value Reverse Voltage (VR) 50 V Power Dissipation @ 25°C Lead Temperature (PD) 250 mW Storage Temperature (TST) -65°C to +150°C Operating Temperature (TOP) -65°C to +150°C ESD Human Body Model Single Common Cathode Series Pair Low Inductance Marking: PN1 Marking: PN3 Marking: PN2 Marking: PNB SOT-23 SOT-23 SOT-23 SOT-23 SOD-323 SOT-143 SOT-143 SC-79 ♦ SMP1322-001 ♦ SMP1322-004 ♦ SMP1322-005 ♦ SMP1322-007 ♦ SMP1322-011 ♦ SMP1322-016 ♦ SMP1322-017 ♦ SMP1322-079 LS = 1.5 nH LS = 1.5 nH LS = 1.5 nH LS = 0.4 nH LS = 1.5 nH LS = 1.5 nH LS = 0.2 nH LS = 0.7 nH SC-70 SC-70 ♦ SMP1322-074 ♦ SMP1322-075 LS = 1.4 nH LS = 1.4 nH Single Class 1B T/R Switch Ultra Low Inductance Marking: PN6 Marking: PNC Single ♦ Available through distribution. Electrical Specifications at 25°C Max. Unit Reverse Current (IR) Capacitance (CT) Parameter VR = 50 V 10 µA F = 1 MHz, V = 30 V 1.0 pF Resistance (RS) F = 100 MHz, I = 1 mA 1.5 Ω Resistance (RS) F = 100 MHz, I = 10 mA 0.5 Ω Forward Voltage (VF) IF = 10 mA 0.85 V Carrier Lifetime (TI) IF = 10 mA 0.4 µS 8 µm I Region Width Condition Typ. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 1 Low Resistance Plastic Packaged PIN Diodes SMP1322 Series Typical Performance Data 100 Forward Current (mA) Series Resistance (Ω) 100 10 1 0.1 0.01 0.1 1 10 1 0.1 0.01 400 100 500 600 700 800 Forward Current (mA) Forward Voltage (mV) Series Resistance vs. Current @ 100 MHz DC Characteristic 1.4 1000 2500 1 MHz–1 GHz 1.0 Conductance (µS) Capacitance (pF) 900 3000 1.2 0.8 0.6 0.4 0V 2000 1500 1000 500 0.2 0 0 1 2 5 10 20 0 50 10 V 40 V 0 500 1000 1500 Reverse Voltage (V) Frequency (MHz) Capacitance vs. Reverse Voltage Conductance vs. Frequency and Reverse Voltage Resistance vs. Temperature @ 500 MHz 2 10 IF (mA) R -55°C Ω) (Ω R -15°C Ω) (Ω R +25°C Ω) (Ω R +65°C Ω) (Ω R +100°C Ω) (Ω 0.02 9.500 9.400 9.900 10.500 10.900 0.10 3.000 3.000 3.000 3.300 3.500 0.30 1.500 1.500 1.500 1.600 1.800 0.50 1.100 1.100 1.200 1.200 1.400 1.00 0.922 0.914 0.902 0.963 1.100 10.00 0.568 0.559 0.533 0.563 0.655 20.00 0.532 0.520 0.494 0.521 0.610 100.00 0.483 0.469 0.440 0.464 0.565 2000 SMP1322-007 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 Gap of the polarity of the diode junction, this low inductance feature is only realizable with the cathode Ground connected to ground. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A Low Resistance Plastic Packaged PIN Diodes SMP1322-016 SOT-143 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 suits. In the specifically configured SOT-143 package, the PIN diodes are oriented to enable connection as a λ/4 switch with no external crossover connections. SMP1322-016 in λ/4 T/R Switch Transmitter GND 4 3 Bias 1 SMP1322-017 SOT-143 Low Inductance PIN Diode The SMP1322-017 utilizes the SMP1322 PIN diode chip in a customized SOT-143 plastic package designed for high isolation performance in a shunt connected switch. Its effective inductance, based on the 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 beyond 2 GHz. Excellent performance is achievable when used in a quarter-wave T/R switch with the SMP1322-001 (SOT-23) or SMP1322-011 (SOD-323) PIN diode as the series connected diode. 4 3 2 4 1 2 1 3 4 3 1 2 2 Receiver Antenna SMP1322 Series λ/4 Schematic Lead Configuration λ/4 T/R Switch Bias Switch Connection T/R Switch Design Antenna DC Control Antenna λ/4 Receiver λ/4 Transmitter Receiver SMP1322-011 SMP1322-017 25 IF = 10 mA 20 Loss (dB) Transmitter 15 10 5 Zero Bias 0 0.5 1 2 3 4 Frequency (GHz) SMP1322-017 Typical SPST Switch Performance Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 3 Low Resistance Plastic Packaged PIN Diodes SOT-23 SMP1322 Series SC-70 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 0.071 (1.80 mm) MIN. 0.087 (2.20 mm) MAX. 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 3 0.083 (2.10 mm) MIN. 0.104 (2.64 mm) MAX. 0.047 (1.20 mm) MIN. 0.055 (1.40 mm) MAX. 2 1 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 3 0.071 (1.80 mm) MIN. 0.094 (2.40 mm) MAX. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 0.037 (0.95 mm) REF. 0.020 (0.51 mm) REF. 2 0.014 (0.35 mm) REF. 0.026 (0.65 mm) REF. 0.076 (1.92 mm) REF. 0.051 (1.30 mm) REF. 0.035 (0.89 mm) MIN. 0.044 (1.12 mm) MAX. 0.003 (0.080 mm) MIN. 0.008 (0.20 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. 8˚ MAX. 0.0005 (0.01 mm) MIN. 0.004 (0.10 mm) MAX. 0.022 (0.55 mm) REF. SOD-323 0.004 (0.10 mm) MIN. 0.012 (0.30 mm) MAX. 0.000 (0.00 mm) MIN. 0.004 (0.10 mm) MAX. SC-79 0.090 (2.30 mm) MIN. 0.108 (2.74 mm) MAX. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 2 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. CATHODE INDICATOR 2 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. 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. 0.050 (1.25 mm) MAX. 0.006 (0.15 mm) TYP. 1 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. 0.020 (0.50 mm) MIN. 0.028 (0.70 mm) MAX. 10˚ MAX. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 10˚ MAX. SOT-143 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 0.076 (1.92 mm) REF. 0.020 (0.50 mm) REF. 3 4 0.083 (2.10 mm) MIN. 0.104 (2.64 mm) MAX. 1 2 0.068 (1.72 mm) REF. 0.028 (0.70 mm) REF. 0.030 (0.76 mm) MIN. 0.035 (0.89 mm) MAX. 0.047 (1.20 mm) MIN. 0.055 (1.40 mm) MAX. 8˚ MAX. 0.003 (0.08 mm) MIN. 0.008 (0.20 mm) MAX. 0.022 (0.55 mm) REF. 4 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 0.031 (0.80 mm) MIN. 0.047 (1.20 mm) MAX. 0.0005 (0.01 mm) MIN. 0.004 (0.15 mm) MAX. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A