Low Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series Features ■ Low Distortion Design ■ Frequency Range from HF to > 2 GHz ■ Designed for Base Station Applications ■ Configured for PI and TEE Attenuators Description The SMP1304 series of plastic packaged, surface mountable, low capacitance (0.3 pF) silicon PIN diodes are designed for use in attenuator applications from 5 MHz to beyond 2 GHz. The thick 100 µm I region of these PIN diodes makes them very attractive for use in low distortion PI and TEE attenuators commonly used in TV distribution applications. The 1 µS typical carrier lifetime of these diodes results in resistance of 20 Ω maximum at 1 mA and 7 Ω maximum at 10 mA. Available in a selection of plastic packages: as a single diode in the small footprint SOD-323 package and in a variety of configurations in the SOT-23 package, including a low inductance (0.4 nH) SMP1304-007 package. Also available in the SOT-143 package are three diode junctions designed for insertion in TEE attenuators (SMP1304-018) and PI attenuators (SMP1304-019). Also available in a SOT-5 (SMP1304-027) package as a four diode array designed for insertion in the commonly used 4 diode PI attenuator circuit. Absolute Maximum Ratings Characteristic Value Reverse Voltage (VR) 200 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 Single Marking: PG1 Marking: PG3 Marking: PG2 Marking: PGB SOT-23 SOT-23 SOT-23 SOT-23 SOD-323 ♦ SMP1304-001 ♦ SMP1304-004 ♦ SMP1304-005 ♦ SMP1304-007 ♦ SMP1304-011 LS = 1.5 nH LS = 1.5 nH LS = 1.5 nH LS = 0.4 nH LS = 1.5 nH Class 1C PI PI Marking: PGJ Marking: PGM SOT-143 SOT-5 ♦ SMP1304-019 ♦ SMP1304-027 ♦ Available through distribution. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A ♦ Available through distribution. 1 Low Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series Electrical Specifications at 25°C Parameter Condition Max. Unit 10 µA F = 1 MHz, V = 30 V 0.30 pF Capacitance (CT) F = 1 MHz, V = 30 V (SMP1304-018 & SMP1304-019) 0.45 pF Resistance (RS) Resistance (RS) F = 100 MHz, I = 1 mA 50 Ω F = 100 MHz, I = 10 mA 7.0 Ω Resistance (RS) F = 100 MHz, I = 100 mA 2.0 Ω Forward Voltage (VF) IF = 10 mA 0.8 V Carrier Lifetime (TI) IF = 10 mA 1.0 µS 100 µm Reverse Current (IR) VR = 200 V Capacitance (CT) Typ. 40 I Region Width Typical Performance Data 100 Forward Current (mA) Series Resistance (Ω) 10000 1000 100 10 1 0.1 0.01 0.1 1 10 1 . 0.1 0.01 400 100 500 600 700 800 Forward Voltage (mV) Series Resistance vs. Current @ 100 MHz DC Characteristic 0.8 400 0.7 350 0.6 300 Conductance (µS) Capacitance (pF) Forward Current (mA) 0.5 0.4 1 MHz 0.3 0.2 100 MHz 0.1 1 GHz 900 0 1 2 5 10 20 50 100 1000 250 200 0V 150 10 V 100 40 V 50 0 2 10 0 0 500 1000 1500 Reverse Voltage (V) Frequency (MHz) Capacitance vs. Reverse Voltage Conductance vs. Frequency and Reverse Voltage Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 2000 Low Distortion Attenuator Plastic Packaged PIN Diodes Resistance vs. Temperature @ 100 MHz 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 1590.0 1660.0 1752.0 1770.0 1760.0 0.10 315.0 340.0 367.0 396.0 409.0 0.30 108.0 118.0 128.0 141.0 147.0 1.00 34.5 37.9 41.6 46.3 48.8 10.00 4.8 5.3 5.8 6.6 7.0 20.00 3.0 3.3 3.6 4.1 4.3 100.00 1.3 1.4 1.5 1.7 1.8 SMP1304 Series SMP1304-019 PI Attenuator PIN Diodes The SMP1304-019 employ three PIN diode junctions in a SOT-143 package. They are configured for ease of insertion in PI attenuator circuits commonly used from 10 MHz to beyond 1 GHz. The SMP1304 PIN diode junction was designed for low capacitance, wide resistance dynamic range and low distortion performance. 3 1 4 3 SMP1304-007 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 inductance feature is only realizable with the cathode connected to ground. 2 4 1 2 SMP1304-019 (PI) Gap 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 3 Low Distortion Attenuator Plastic Packaged PIN Diodes SOT-23 SMP1304 Series SOD-323 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 0.090 (2.30 mm) MIN. 0.108 (2.74 mm) MAX. 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 0.010 (0.25 mm) MIN. 0.016 (0.40 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. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 2 2 1 0.037 (0.95 mm) REF. 0.020 (0.51 mm) REF. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. CATHODE INDICATOR 0.076 (1.92 mm) REF. 0.008 (0.20 mm) NOM. 0.035 (0.89 mm) MIN. 0.044 (1.12 mm) MAX. 0.003 (0.080 mm) MIN. 0.008 (0.20 mm) MAX. 8˚ MAX. 0.050 (1.25 mm) MAX. 0.006 (0.15 mm) TYP. 0.004 (0.10 mm) MAX. 0.0005 (0.01 mm) MIN. 0.004 (0.10 mm) MAX. 0.022 (0.55 mm) REF. SOT-143 0.010 (0.25 mm) MIN. SOT-5 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 0.076 (1.92 mm) REF. 0.020 (0.50 mm) REF. 0.074 (1.90 mm) REF. 5 4 0.069 (1.75 mm) 0.052 (1.30 mm) 3 4 0.083 (2.10 mm) MIN. 0.104 (2.64 mm) MAX. 1 1 2 0.068 (1.72 mm) REF. 0.028 (0.70 mm) REF. 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 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 0.031 (0.80 mm) MIN. 0.047 (1.20 mm) MAX. 0.0005 (0.01 mm) MIN. 0.004 (0.15 mm) MAX. 0.020 (0.51 mm) 0.014 (0.35 mm) 0.012 (0.30 mm) 0.000 (0.00 mm) MIN. 0.064 (1.63 mm) 0.035 (0.90 mm) 0.122 (3.10 mm) 0.106 (2.70 mm) 2 0.118 (3.00 mm) 0.087 (2.20 mm) 3 0.037 (0.95 mm) REF. 0.012 (0.30 mm) TYP. 0.024 (0.61 mm) 0.004 (0.10 mm) 0.0104 (0.26 mm) 0.0035 (0.09 mm) MIN. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A