Hyperabrupt Tuning Varactors SMV1247-SMV1255 Features High Capacitance Ratio, C0.3 V/C4.7 V = 12 Typ. Multiple Packages SOT-23, SOD-323, SC-70 and SC-79 Designed for High Volume Commercial Applications SPICE Models are Available Description Absolute Maximum Ratings The SMV1247-SMV1255 series of silicon hyperabrupt junction varactor diodes are designed for use in VCOs with low tuning voltage operation. This family of varactors is characterized for capacitance and resistance over temperature. SPICE models are provided. Characteristic Value Reverse Voltage (VR) 15 V Forward Current (IF) 20 mA Power Dissipation (PD) 250 mW Storage Temperature (TST) -55C to +150C Operating Temperature (TOP) -55C to +125C Single Single Single Common Anode Common Cathode Common Anode SC-79 SOD-323 SOT-23 SOT-23 SOT-23 SC-70 SMV1247-079 Common Cathode SC-70 SMV1247-074 SMV1248-001 SMV1249-079 SMV1249-011 SMV1249-001 SMV1251-079 SMV1251-011 SMV1251-001 SMV1249-003 SMV1249-073 SMV1251-004 SMV1253-079 SMV1251-074 SMV1253-004 SMV1255-079 SMV1255-011 SMV1255-001 SMV1255-003 SMV1255-004 SMV1255-073 LS = 0.7 nH LS = 1.5 nH LS = 1.5 nH LS = 1.5 nH LS = 1.5 nH LS = 1.4 nH LS = 1.4 nH Available through distribution. For other packages or configurations, please contact the factory. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A 1 Hyperabrupt Tuning Varactors SMV1247-SMV1255 Electrical Specifications at 25C CT @ 0.3 V (pF) Part Number CT @ 4.7 V (pF) CT @ 1V (pF) CT @ 3V (pF) CT @ 0.3 V CT @ 4.7 V (Ratio) C T @ 1 V RS @ 3 V CT @ 3 V 500 MHz ) (Ratio) ( Q @ 3V 50 MHz Min. Typ. Typ. Max. Typ. Typ. Min. Typ. Typ. Max. Typ. SMV1247 6.5 7 0.7 0.78 4.4 0.95 9.5 10.0 4.6 2.0 1500 SMV1248 15.0 17 1.5 1.70 12.3 2.60 10.8 12.0 4.7 1.8 700 SMV1249 28.0 31 2.6 2.80 18.2 3.40 11.0 12.1 5.3 1.5 600 SMV1251 38.0 42 3.4 3.80 28.1 5.80 11.0 12.2 4.8 1.3 400 SMV1253 48.0 53 4.3 4.80 37.0 7.80 11.0 12.3 4.7 1.2 350 SMV1255 58.0 64 5.2 5.80 43.3 8.50 11.0 12.3 5.1 1.0 350 Reverse Voltage VR (IR = 10 A): 15 V Reverse Current IR (VR = 12 V): 20 nA Typical Performance Data 4.0 100.0 SMV1255 3.5 SMV1247 SMV1251 3.0 SMV1248 SMV1249 2.5 10.0 RS () Capacitance (pF) SMV1253 1.0 SMV1249 SMV1251 2.0 1.5 1.0 SMV1248 SMV1253 0.5 SMV1247 0.1 0 4.0 2.0 6.0 8.0 0 2 3 4 5 Reverse Voltage (V) Capacitance vs. Reverse Voltage Series Resistance vs. Reverse Voltage @ 500 MHz 15 2 Percentage Change (%) Percentage Change (%) 1 Reverse Voltage (V) 3 VR = 1 V 1 0 -1 -2 VR = 4 V 10 5 0 -5 -10 -15 -20 -25 -3 -40 2 SMV1255 0 -20 0 20 40 60 80 -50 -25 0 25 50 75 100 Temperature (C) Temperature (C) Relative Capacitance Change vs. Temperature Relative Series Resistance Change vs. Temperature @ 500 MHz Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A Hyperabrupt Tuning Varactors SMV1247-SMV1255 Typical Capacitance Values SMV1247 SMV1248 SMV1249 SMV1251 SMV1253 SMV1255 VR (V) CT (pF) CT (pF) CT (pF) CT (pF) CT (pF) CT (pF) 0.0 8.86 22.62 37.35 53.65 69.32 81.21 0.5 6.17 16.32 25.88 38.23 50.23 58.28 1.0 4.37 12.33 18.18 28.09 37.07 43.27 1.5 2.96 9.12 12.08 20.13 27.57 31.49 2.0 1.88 6.27 7.27 13.55 19.37 21.50 2.5 1.22 3.93 4.44 8.60 12.39 13.40 3.0 0.95 2.57 3.40 5.78 7.77 8.51 3.5 0.83 1.95 2.96 4.57 5.77 6.51 4.0 0.77 1.71 2.72 3.95 4.86 5.58 4.5 0.73 1.59 2.51 3.58 4.34 5.07 5.0 0.70 1.49 2.38 3.33 4.01 4.76 5.5 0.68 1.44 2.30 3.16 3.78 4.58 6.0 0.67 1.40 2.24 3.03 3.62 4.46 6.5 0.66 1.36 2.19 2.94 3.50 4.39 7.0 0.65 1.33 2.14 2.88 3.41 4.33 7.5 0.64 1.31 2.09 2.83 3.34 4.29 8.0 0.64 1.30 2.03 2.79 3.28 4.26 SPICE Model Part Number PORT P_anode port = 1 IND LS L = LS RES RS R = RS DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear CAP CP C = CP PORT P_Cathode port = 2 DIODEM Diode_Model IS = 1.00e-14 RS = 0 N=1 TT = 0 CJO = CJO M=M EG = 1.11 XTI = 3 KF =0 AF =1 FC = 0.5 BV = 0 IBV = 1e-3 ISR = 0 NR = 2 IKF = 0 NBV = 1 IBVL = 0 NBVL = 1 TBV1 = 0 TNOM = 27 FFE = 1 CJO (pF) VJ (V) M CP (pF) RS ) ( SMV1247 9.22 13 10.5 0 2.0 SMV1248 21.54 17 14.0 0 1.8 SMV1249 39.00 17 14.0 0 1.5 SMV1250 47.00 17 14.0 0 1.5 SMV1251 60.00 17 14.0 0 1.3 SMV1253 70.00 17 14.0 0 1.2 SMV1255 82.00 17 14.0 0 1.0 1. Values extracted from measured performance. 2. For package inductance (LS) refer to package type. 3. For more details refer to the "Varactor SPICE Models for RF VCO Applications" Application Note. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A 3 Hyperabrupt Tuning Varactors SMV1247-SMV1255 SOT-23 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. 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. 2 1 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 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 2 CATHODE INDICATOR CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.050 (1.25 mm) MAX. 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. 2 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.008 (0.20 mm) NOM. 0.006 (0.15 mm) TYP. 1 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. 4 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A