Low Distortion Attenuator Plastic Packaged PIN Diodes L Alpha 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 um | region of these PIN diodes makes them very attractive for use in low distortion Pl and TEE attenuators commonly used in TV distribution applications. The 1 uS typical carrier lifetime of these diodes results in resistance of 20 OQ maximum at 1 mA and 7 OQ 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 Series Absolute Maximum Ratings Characteristic Value Reverse Voltage (VR) 200 V Power Dissipation @ 25C Lead 250 mW Temperature (Pp) Storage Temperature (Tsq) -65C to +150C Operating Temperature (Top) -65C to +150C ESD Human Body Model Class 1C (SMP1304-019). Fa oH Common Series Pair Cathode Inductance Single Pl PGJ SMP1304-001 SMP1304-004 SMP1304-005 SMP1304-007 SMP1304-011 SMP1304-018 SMP1304-019 Lg = 1.5 nH Lg =1.5 nH Lg = 1.5 nH Lg = 0.4 nH Lg = 1.5 nH Available through distribution. Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com 1 Specifications subject to change without notice. 6/99ALow Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series Electrical Specifications at 25C Parameter Condition Typ. Max. Unit Reverse Current (Ip) Vr = 200 V 10 HA Capacitance (Cr) F=1 MHz, V=30V 0.30 pF Capacitance (Cy) F=1 MHz, V=30V 0.45 pF (SMP1304-018 & SMP1304-019) Resistance (Rs) F = 100 MHz, |= 1 mA 40 50 Q Resistance (Rs) F = 100 MHz, |= 10mA 7.0 Q Resistance (Rs) F = 100 MHz, | = 100 mA 2.0 Q Forward Voltage (VF) IF =10 mA 0.8 Vv Carrier Lifetime (Tl) IF =10 mA 1.0 LS | Region Width 100 pum Typical Performance Data 10000 100 @ 1000 x aq E 10 2 = 5 100 ir 10 BG G g = 014 3 | ng 0.1 0.01 0.01 0.1 1 10 100 400 500 600 700 800 900 1000 Forward Current (mA) Forward Voltage (mV) Series Resistance vs. Current @ 100 MHz DC Characteristic 400 350 rm @ 300 OD = 9 g 250 5 200 o a wo oS Q. = 150 a 3 oO Cc 8 100 100 MHz 50 0 0 1 2 5 10 20 50 6100 Reverse Voltage (V) Capacitance vs. Reverse Voltage 0 500 1000 1500 Frequency (MHz) Conductance vs. Frequency 2000 Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com Specifications subject to change without notice. 6/99ALow Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series Gap Resistance vs. Temperature @ 100 MHz SMP1304-018, SMP1304-019 TEE and Pl R R R R R Attenuator PIN Diodes IF 55C 15C | 425C | 465C | +100C Both the SMP1304-018 and the SMP1304-019 employ (mA) (2) (9) (2) (2) (2) three PIN diode junctions in a SOT-143 package. They are 0.02 | 1590.0 | 1660.0 | 17520 | 1770.0 | 1760.0 configured for ease of insertion in PI and TEE attenuator 0.10 315.0 | 340.0 | 367.0 | 396.0 | 409.0 circuits commonly used from 10 MHz to beyond 1 GHz. 0.30 108.0 118.0 128.0 141.0 147.0 The SMP1304 PIN diode junction was designed for low 1.00 34.5 37.9 41.6 46.3 48.8 capacitance, wide resistance dynamic range and low 10.00 48 5.3 5.8 6.6 7.0 distortion performance. 20.00 3.0 3.3 3.6 41 43 100.00 1.3 1.4 1.5 1.7 1.8 1 Ge SMP1304-007 SG In the -007 configuration of the SOT-23 package, the 4 3 KI package inductance is effectively reduced to 0.4 nH, in -_ tr comparison to the 1.5 nH value of the standard [| [J configuration. This lower inductance will be particularly 7 3 beneficial when the diodes are used as shunt connected 2 switches at frequencies higher than 500 MHz, where SMP1304-018 (TEE) 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 3 1 4 3 trace, as shown in the figure. Because of the polarity of = Fj the diode junction, this low inductance feature is only V realizable with the cathode connected to ground. 4 4 = - SMP1304-019 (PI) 2 4 Ground Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com 3 Specifications subject to change without notice. 6/99ALow Distortion Attenuator Plastic Packaged PIN Diodes SMP1304 Series SOT-23 SOD-323 0.110 (2.80 mm) MIN. 0.090 (2.30 mm) MIN. 0.120 (3.04 mm) MAX. | | 0.012 (0.30 mm) MIN. 0.108 (2.74 mm) MAX. 1 0.020 (0.50 mm) MAX. . > FAs t 0.010 | (0.25 mm) MIN. 0.083 (2.10 mm) MIN. # 0.047 (1.20 mm) MIN. 0.045 (4.15 mm) MIN. t *oot6 0.104 (2.64 mm) MAX. 4 0.055 (1.40 mm) MAX. 0.037 (0.95 mm) REF. | | an 5 0.020 (0.51 mm) REF. >! ( 0.076 (1.92 mm) REF. 0.003 (0.080 mm) MIN. 0.008 (0.20 mm) MAX. 8 MAX. CY 0.022 (0.55 mm) REF. SOT-143 0.044 (1.12 mm) MAX. So 0.0005 (0.01 mm) vint 4 0.004 (0.10 mm) MAX. 0.035 (0.89 mm) MIN. | 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 0.020 (0.50 mm) REF. 0.083 (2.10 mm) MIN. 0.104 (2.64 mm) MAX. 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. \< P] 0.003 (0.08 mm) MIN. 8 MAX. 0.008 (0.20 mm) MAX. tS Lt nel ee 0.022 (0.55 mm) REF. >| 0.076 (1.92 mm) REF. 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 0.031 (0.80 mm) MIN. 0.047 (1.20 mm) MAX. FT 0.0005 (0.01 mm) vn 4 0.004 (0.15 mm) MAX. 0.053 (1.35 mm) MAX. { CATHODE INDICATOR ] = 0.006 (0.15 mm) TYP. 7 hye 0.010 (0.25 mm) MIN. | | tS (0.40 mm) MAX. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. 0.008 (0.20 mm) NOM. 4 0.050 (1.25 mm) MAX. + t o.004 (0.10 mm) MAX. Specifications subject to change without notice. 6/99A Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com